06-03-2014 дата публикации
Номер: US20140063626A1
A monofocal photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a concave image-side surface. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has negative refractive power. The sixth lens element with positive refractive power has a convex image-side surface. 1. A monofocal photographing lens assembly comprising , in order from an object side to an image side:a first lens element with negative refractive power having a concave image-side surface;second lens element with refractive power;a third lens element with refractive power;a fourth lens element with refractive power;a fifth lens element with negative refractive power; andto a sixth lens element with positive refractive power having a convex image-side surface; [{'br': None, 'i': '
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27-03-2014 дата публикации
Номер: US20140085529A1
Compact and lightweight zoom lens systems having less aberration fluctuation in association with focusing, lens barrels, interchangeable lens apparatuses, and camera systems are provided. The zoom lens system comprises: a first lens unit having positive optical power; a first focusing lens unit which is located on an image side relative to the first lens unit, has negative optical power, and moves along an optical axis in zooming and focusing; and a second focusing lens unit which is located on the image side relative to the first focusing lens unit, has positive optical power, and moves along the optical axis in the zooming and the focusing, and satisfies the condition: |d/d|<1.0 (d: an amount of movement of the first focusing lens unit in focusing at a telephoto limit, d: an amount of movement of the second focusing lens unit in focusing at a telephoto limit). 1. A zoom lens system which comprises a plurality of lens units , and performs zooming from a wide-angle limit to a telephoto limit , and focusing from an infinity in-focus condition to a close-object in-focus condition , whereinthe plurality of lens units include:a first lens unit having positive optical power;a first focusing lens unit which is located on an image side relative to the first lens unit, has negative optical power, and moves along an optical axis in the zooming and the focusing; anda second focusing lens unit which is located on the image side relative to the first focusing lens unit, has positive optical power, and moves along the optical axis in the zooming and the focusing,the first lens unit has a constant distance from an image surface in both the zooming and the focusing, andthe first focusing lens unit moves to the object side along the optical axis at a telephoto limit in the focusing.2. The zoom lens system as claimed in claim 1 , whereinthe first focusing lens unit does not move along the optical axis at a wide-angle limit in the focusing.3. The zoom lens system as claimed in claim ...
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03-04-2014 дата публикации
Номер: US20140092490A1
A lens system comprises, on a side closest to an object, a first lens component having a positive refractive power and a second lens component having a positive refractive power in order from the object; and on a side closest to an image, a cemented lens constructed by cementing together a positive lens and a negative lens in order from the object; wherein the lens system satisfies the following conditional expressions: 113-. (canceled)15. A lens system according to claim 14 , wherein the front-side lens group and the rear-side lens group move by respective ratios of movement different from each other along the optical axis upon focusing from an intermediate shooting distance to the object at the short distance.16. A lens system according to claim 14 , wherein the lens system satisfies the following conditional expression:{'br': None, 'i': f', 'f<, '0.78<(−9)/1.59'}where f9 denotes a focal length of the negative lens in the rear-side lens group, and f denotes a focal length of the lens system as a whole.17. A lens system according to claim 14 , wherein the fifth lens component has a double concave form; andwherein the sixth lens component has a double convex form.18. A lens system according to claim 14 , wherein the seventh lens component is a positive lens having a double convex form.19. A lens system according to claim 14 , wherein the seventh lens component is a positive meniscus lens having a convex surface facing an image.2028-. (canceled)30. A method of manufacturing a lens system according to claim 29 , wherein the front-side lens group and the rear-side lens group move by respective ratios of movement different from each other along the optical axis upon focusing from an intermediate shooting distance to the object at the short distance.31. A method of manufacturing a lens system according to claim 29 , wherein the lens system satisfies the following conditional expression:{'br': None, 'i': f', 'f<, '0.78<(−9)/1.59'}where f9 denotes a focal length of the ...
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01-01-2015 дата публикации
Номер: US20150002946A1
Принадлежит:
An imaging lens substantially consisting of a first lens group, a stop, and a second lens group in this order from the object side, the first lens group includes at least a positive lens, a negative meniscus lens with a convex surface toward the object side, a biconcave negative lens, and a cemented lens substantially constituted by two lenses, which are a positive lens and a negative lens, in this order from the object side; the second lens group includes at least a first positive lens with a convex surface toward the image side, a cemented lens substantially constituted by two lenses, which are a positive lens and a negative lens, and a second positive lens with a convex surface toward the image side, in this order from the object side; and a predetermined conditional expression is satisfied. 2. The imaging lens of claim 1 , wherein conditional expression below is satisfied:{'br': None, 'i': f', 'a/f<, '2.3<16.5\u2003\u2003(1-1).'}4. The imaging lens of claim 3 , wherein conditional expressions below are satisfied:{'br': None, 'i': 'ra/rb', '−0.75<<−0.2\u2003\u2003(2-1)'}{'br': None, 'i': 'Ds/f<', '0.18<0.45\u2003\u2003(3-1).'}6. The imaging lens of claim 5 , wherein conditional expression below is satisfied:{'br': None, 'i': 'm/', '60<Σν2\u2003\u2003(4-1).'}8. The imaging lens of claim 7 , wherein conditional expression below is satisfied:{'br': None, 'i': rc−rd', 'rc+rd, '0.0≦()/()<0.5\u2003\u2003(5-1).'}9. The imaging lens of claim 8 , wherein conditional expression below is satisfied:{'br': None, 'i': rc−rd', 'rc+rd, '0.1<()/()<0.3\u2003\u2003(5-2).'}11. The imaging lens of claim 10 , conditional expression below is satisfied:{'br': None, 'i': f', 'a/f<, '1.0<25.0\u2003\u2003(6-1).'}14. The imaging lens of claim 1 , wherein the most-image-side lens in the second lens group is a cemented lens substantially constituted by two lenses claim 1 , which are a negative lens and a positive lens in this order from the object side.15. The imaging lens of claim 1 , ...
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05-01-2017 дата публикации
Номер: US20170003482A1
Принадлежит:
A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The second lens element has positive refractive power. The sixth lens element has both of an object-side surface and an image-side surface being aspheric. The seventh lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof, and both of an object-side surface and the image-side surface are aspheric. 1. A photographing optical lens assembly comprising , in order from an object side to an image side:a first lens element;a second lens element having positive refractive power;a third lens element;a fourth lens element;a fifth lens element;a sixth lens element with positive refractive power having both of an object-side surface and an image-side surface being aspheric; anda seventh lens element having an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof, and both of an object-side surface and the image-side surface of the seventh lens element are aspheric;wherein the photographing optical lens assembly has a total of seven lens elements; the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element are all single and non-cemented lens elements; [{'br': None, 'i': R', 'f;, '0≦12/'}, {'br': None, 'i': f', 'f, '2/|1|<1.5;'}, {'br': None, 'i': R', 'f<, '14/0.75; and'}, {'br': None, 'i': 'TL', '/ImgH<3.0.'}], 'wherein a curvature radius of the image-side surface of the sixth lens element is R12, a curvature radius of the image-side surface of ...
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04-01-2018 дата публикации
Номер: US20180003926A1
Принадлежит:
A photographing optical lens assembly includes, in order from object side to image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has positive refractive power. The second, third, fourth and fifth lens elements have refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface has at least one inflection point. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region, wherein an object-side surface and the image-side surface of the seventh lens element are both aspheric, and the image-side surface has at least one inflection point. 1. A photographing optical lens assembly comprising seven lens elements , the seven lens elements being , in order from an object side to an image side , a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element and a seventh lens element;wherein the first lens element has positive refractive power, the second lens element has an object-side surface being convex in a paraxial region thereof, the third lens element has an image-side surface being concave in a paraxial region thereof, an image-side surface of the sixth lens element has at least one inflection point, and an image-side surface of the seventh lens element has at least one inflection point;wherein there is a non-axial critical point on the image-side surface of the sixth lens element at which a tangent to the image-side surface of the sixth lens element is perpendicular to an optical axis, there is a non-axial critical point on the image-side surface of the seventh lens element at which a tangent to the image-side ...
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02-01-2020 дата публикации
Номер: US20200003991A1
The imaging lens consists of, in order from the object side, a positive first lens group that moves to the object side during focusing from a long distance to a short distance, and a second lens group that does not move during focusing. The first lens group has a first-B sub-lens group. The first-B sub-lens group consists of, in order from the object side, a positive b1 lens, a negative b2 lens concave toward the image side, an aperture stop, a negative b3 lens concave toward the object side, and a positive b4 lens. The second lens group consists of, in order from the object side, a negative lens, a positive lens, and a negative lens. Predetermined conditional expressions are satisfied. 4. The imaging lens according to claim 1 , wherein assuming thata focal length of the imaging lens during focusing on an object at infinity is f, anda focal length of the second lens group is f2, {'br': None, 'i': 'f/f', '−0.7<2<0.3\u2003\u2003(4).'}, 'Conditional Expression (4) is satisfied, which is represented by'}6. The imaging lens according to claim 1 , wherein the first lens group consists of claim 1 , in order from the object side claim 1 , a first-A sub-lens group having a positive refractive power claim 1 , the first-B sub-lens group claim 1 , and a first-C sub-lens group having a positive refractive power.7. The imaging lens according to claim 6 , wherein the first-A sub-lens group consists of one or two lenses.8. The imaging lens according to claim 6 , wherein the first-C sub-lens group consists of one or two lenses.9. The imaging lens according to claim 1 , wherein the b1 lens and the b2 lens are cemented with each other.10. The imaging lens according to claim 1 , wherein the b3 lens and the b4 lens are cemented with each other.11. The imaging lens according to claim 1 , wherein the positive lens of the second lens group is a biconvex lens.12. The imaging lens according to claim 1 , wherein Conditional Expression (1-1) is satisfied claim 1 , which is represented by{'br': ...
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02-01-2020 дата публикации
Номер: US20200003992A1
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An optical imaging lens includes a first lens element to a seventh lens element. The first lens element, the fifth lens element and the sixth lens element are made of plastic. The optical axis region of the image-side surface of the second lens element is convex, the optical axis region of the image-side surface of the third lens element is convex, the optical axis region of the object-side surface of the fourth lens element is convex and the optical axis region of the image-side surface of the seventh lens element is concave to satisfy (T5+G56+T6)/(G23+T3+G34+T4+G45)≥1.200 by controlling the surface curvatures of each lens element to enlarge HFOV, to reduce the system length and to have good imaging quality. 1. An optical imaging lens , from an object side to an image side in order along an optical axis comprising: a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element and a seventh lens element , the first lens element to the seventh lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through , wherein:the first lens element is made of plastic;an optical axis region of the image-side surface of the second lens element is convex;an optical axis region of the image-side surface of the third lens element is convex;an optical axis region of the object-side surface of the fourth lens element is convex;the fifth lens element is made of plastic;the sixth lens element is made of plastic; andan optical axis region of the image-side surface of the seventh lens element is concave;wherein only the above-mentioned seven lens elements of the optical imaging lens have refracting power;{'b': 3', '4', '5', '6', '23', '34', '45', '56', '5', '56', '6', '23', '3', '34', '4', '45, 'wherein, T is a thickness of the third lens element along ...
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02-01-2020 дата публикации
Номер: US20200003993A1
Принадлежит:
An optical imaging lens may comprise a first, a second, a third, a fourth, a fifth, a sixth and a seventh lens elements sequentially from an object side to an image side along an optical axis, and each of the first, second, third, fourth, fifth, sixth and seventh lens elements may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through. The optical imaging lens may comprise no other lens elements having refracting power beyond the first, second, third, fourth, fifth, sixth and seventh lens elements. Through designing concave and/or convex surfaces of the four lens elements, the optical imaging lens may provide improved imaging quality and optical characteristics while the total length of the optical imaging lens may be shortened. 1. An optical imaging lens comprising a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element and a seventh lens element sequentially from an object side to an image side along an optical axis , each of the first , second , third , fourth , fifth , sixth and seventh lens elements having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through , the optical imaging lens comprising no other lens elements having refracting power beyond the first , second , third , fourth , fifth , sixth and seventh lens elements wherein:the first lens element has negative refracting power;an optical axis region of the image-side surface of the second lens element is convex;an optical axis region of the object-side surface of the third lens element is concave;a periphery region of the object-side surface of the fourth lens element is concave;a periphery region of the image-side surface of ...
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02-01-2020 дата публикации
Номер: US20200003994A1
An optical imaging system includes first through seventh lenses. The first lens includes positive refractive power, the second lens includes a positive refractive power, the third lens includes a negative refractive power, an object-side surface thereof being convex, the fourth lens includes a positive refractive power, the fifth lens includes a negative refractive power, the sixth lens includes a negative refractive power, and the seventh lens includes a negative refractive power and having an inflection point formed on an image-side surface thereof. The first to seventh lenses are sequentially disposed from an object side toward an imaging plane. 1. An optical imaging system , comprising:a first lens comprising a positive refractive power;a second lens comprising a positive refractive power;a third lens comprising a negative refractive power, an object-side surface of the third lens being convex;a fourth lens comprising a positive refractive power;a fifth lens comprising a negative refractive power;a sixth lens comprising a negative refractive power; anda seventh lens comprising a negative refractive power and comprising an inflection point formed on an image-side surface thereof,wherein the first to seventh lenses are sequentially disposed from an object side toward an imaging plane.2. The optical imaging system of claim 1 , wherein an object-side surface of the first lens is convex claim 1 , and an image-side surface of the first lens is concave.3. The optical imaging system of claim 1 , wherein an object-side surface and an image-side surface of the second lens are convex.4. The optical imaging system of claim 1 , wherein an image-side surface of the third lens is concave.5. The optical imaging system of claim 1 , wherein an object-side surface and an image-side surface of the fourth lens are convex.6. The optical imaging system of claim 1 , wherein an object-side surface of the fifth lens is concave claim 1 , and an image-side surface of the fifth lens is ...
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02-01-2020 дата публикации
Номер: US20200004000A1
Принадлежит: Fujifilm Corp
A zoom lens consists of a positive first lens group that is fixed during zooming, a negative second lens group that moves during zooming, a positive third lens group that moves during zooming, a positive fourth lens group that moves during zooming, and a positive fifth lens group that is fixed during zooming. During zooming from a wide angle end to a telephoto end, the fourth lens group moves from an image side to an object side, the second lens group and a composite group consisting of the third lens group and the fourth lens group pass through points where respective lateral magnifications are −1 at the same time, the fifth lens group consists of a negative fifth A lens group that moves during anti-shake operation, and a positive fifth B lens group that is fixed during the anti-shake operation, and the lateral magnification of the fifth A lens group is negative.
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07-01-2021 дата публикации
Номер: US20210003819A1
Принадлежит: Fujifilm Corp
The rear converter lens consists of, in order from an object side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; and a third lens group that has a positive refractive power. The first lens group consists of a cemented lens in which a negative lens concave toward the image side and a positive lens convex toward the object side are cemented. The second lens group consists of a cemented lens in which a negative lens concave toward the image side, a positive lens convex toward both sides, and a negative lens concave toward the object side are cemented. The third lens group consists of a cemented lens in which a positive lens convex toward the object side and a negative lens are cemented. The rear converter lens satisfies predetermined Conditional Expressions (1) and (2).
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07-01-2021 дата публикации
Номер: US20210003820A1
An optical lens assembly and an imaging device including the optical lens assembly are disclosed. The optical lens assembly may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially from an object side to an image side along an optical axis. The first lens may have a negative refractive power with an image-side surface being concave. The second lens may have a positive refractive power with an object-side surface being convex. The third lens may have a negative refractive power with an object-side surface and an image-side surface being concave. The fourth lens may have a positive refractive power with an object-side surface and an image-side surface being convex. The seventh lens may have a positive refractive power with an object-side surface being convex. 1. An optical lens assembly , comprising: a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens , and a seventh lens , which are arranged sequentially from an object side to an image side of the optical lens assembly along an optical axis ,wherein,the first lens has a negative refractive power, and an image-side surface of the first lens is concave;the second lens has a positive refractive power, and an object-side surface of the second lens is convex;the third lens has a negative refractive power, and each of an object-side surface and an image-side surface of the third lens is concave;the fourth lens has a positive refractive power, and each of an object-side surface and an image-side surface of the fourth lens is convex; andthe seventh lens has a positive refractive power, and an object-side surface of the seventh lens is convex.2. The optical lens assembly according to claim 1 , wherein the fifth lens has a positive refractive power claim 1 , and each of an object-side surface and an image-side surface of the fifth lens is convex; andthe sixth lens has a negative refractive power, and an object-side ...
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07-01-2021 дата публикации
Номер: US20210003824A1
The present disclosure provides an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having a positive refractive power; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a refractive power, an object-side surface thereof being a concave surface, and an image-side surface thereof being a convex surface; a fifth lens having a refractive power; a sixth lens having a positive refractive power, an object-side surface thereof being a concave surface, and an image-side surface thereof being a convex surface; and a seventh lens having a refractive power. An effective focal length f of the optical imaging lens assembly and an entrance pupil diameter of the optical imaging lens assembly satisfy f/EPD<1.5. 1. An optical imaging lens assembly , sequentially from an object side to an image side of the optical imaging lens assembly along an optical axis , comprising:a first lens having a positive refractive power;a second lens having a positive refractive power;a third lens having a negative refractive power;a fourth lens having a refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface;a fifth lens having a refractive power;a sixth lens having a positive refractive power, an object-side surface of the sixth lens being a concave surface, and an image-side surface of the sixth lens being a convex surface;a seventh lens having a refractive power; andwherein f/EPD<1.5, where f is an effective focal length of the optical imaging lens assembly and EPD is an entrance pupil diameter of the optical imaging lens assembly.2. The optical imaging lens assembly according to claim 1 , wherein the optical imaging lens assembly further comprises a stop claim 1 , and the stop is disposed between the object side and the first lens.31. The optical imaging ...
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07-01-2021 дата публикации
Номер: US20210003826A1
Принадлежит:
An optical imaging lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which have refractive power and are sequentially arranged from an object side to an image side of the optical imaging lens assembly along an optical axis. The first lens and the third lens both have positive refractive power. The fifth lens has negative refractive power. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy f/EPD<1.3. 1. An optical imaging lens assembly , comprising: a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens and a seventh lens , which have refractive power and are sequentially arranged from an object side to an image side of the optical imaging lens assembly along an optical axis ,wherein,the first lens and the third lens both have positive refractive power;the fifth lens has negative refractive power; andwherein f/EPD<1.3, where f is a total effective focal length of the optical imaging lens assembly, and EPD is an entrance pupil diameter of the optical imaging lens assembly.2. The optical imaging lens assembly according to claim 1 , wherein 0.6
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07-01-2021 дата публикации
Номер: US20210003829A1
Принадлежит:
An optical imaging lens group includes a first lens through a seventh lens sequentially arranged from an object side to an image side along an optical axis. The first lens has positive refractive power, and object-side and image-side surfaces thereof are a convex surface and a concave surface, respectively. The second lens has negative refractive power, and object-side and image-side surfaces of the second lens are a convex surface and a concave surface, respectively. The fourth and fifth lenses both have refractive power. The third and sixth lenses both have positive refractive power. The seventh lens has negative refractive power, and an object-side surface thereof has a concave surface. A distance along the optical axis TTL from the object-side surface of the first lens to an imaging plane and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy TTL/ImgH<1.3. 1. An optical imaging lens group , comprising: a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens and a seventh lens , which are sequentially arranged from an object side to an image side of the optical imaging lens group along an optical axis ,wherein,the first lens has positive refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface;the second lens has negative refractive power, an object-side surface of the second lens is a convex surface, and an image-side surface of the second lens is a concave surface;the third lens has positive refractive power;the fourth lens has refractive power;the fifth lens has refractive power;the sixth lens has positive refractive power;the seventh lens has negative refractive power, and an object-side surface of the seventh lens is a concave surface; andwherein TTL/ImgH<1.3, where TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens ...
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03-01-2019 дата публикации
Номер: US20190004277A1
Принадлежит:
The zoom lens according to the present invention includes a plurality of lens units consisting of front and rear groups having negative and positive refractive powers at a wide angle end (WAE), respectively. An interval between front and rear groups on an optical axis is longest among all intervals between adjacent ones of plurality of lens units at WAE. The rear group is disposed at an image side of front group and includes a plurality of lens units including a negative lens unit LN (LULN) disposed closest to image side. The LULN includes negative and positive lenses disposed closest to object and image sides in LULN, respectively. A focal length of LULN, a focal length of zoom lens at WAE, a distance on optical axis between a lens surface closest to object side and that closest to image side in LULN, and a back focus at WAE are appropriately set. 1. A zoom lens comprising a plurality of lens units , intervals between adjacent ones of the lens units being changed during zooming , whereinthe plurality of lens units consist of a front group including at least one lens unit and a rear group disposed at an image side of the front group and including a plurality of lens units,an interval between the front group and the rear group on an optical axis is the longest among all the intervals between the adjacent ones of the lens units at a wide angle end,the front group has a negative refractive power at the wide angle end,the rear group has a positive refractive power at the wide angle end,the rear group comprises a lens unit LN having a negative refractive power and disposed closest to the image side,the lens unit LN comprises a negative lens LNN disposed closest to an object side among lenses included in the lens unit LN and a positive lens LNP disposed closest to the image side among the lenses included in the lens unit LN, and [{'br': None, 'i': 'fn/fw<−', '−2.5<0.6, and'}, {'br': None, 'i': 'D/skw<', '0.9<3.0'}], 'the following conditional expressions are ...
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03-01-2019 дата публикации
Номер: US20190004285A1
Принадлежит:
An imaging lens assembly includes, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric. At least one of an image-side surface of the fourth lens element and an image-side surface of the fifth lens element has at least one inflection point. 1. An imaging lens assembly comprising seven lens elements , the seven lens elements being , in order from an object side to an image side , a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element and a seventh lens element , the first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof , the seventh lens element having an image-side surface being concave in a paraxial region thereof , the image-side surface of the seventh lens element having at least one convex shape in an off-axis region thereof , and an object-side surface and the image-side surface of the seventh lens element being both aspheric; [{'br': None, 'i': 'f/R', '0≤8;'}, {'br': None, 'i': 'f/R', '0≤10,'}, {'br': None, 'i': 'Td/ΣCT<', '1.65; and'}, {'br': None, 'i': f/f', 'f, '1.10<|6|+|7|.'}], 'wherein at least one of an image-side surface of the fourth lens element and an image-side surface of the fifth lens element has ...
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03-01-2019 дата публикации
Номер: US20190004286A1
Принадлежит:
Provided are an optical lens assembly and an electronic apparatus including the same. The optical lens assembly includes a first lens group and a second lens group that are arranged from an object side to an image side, wherein the first lens group has positive refractive power and is fixed during focusing, and the second lens group moves along an optical axis for focusing. 5. The optical lens assembly of claim 1 , wherein a lens located closest to the object side in the first lens group is an aspherical lens.7. The optical lens assembly of claim 1 , wherein the optical lens assembly has a field of view angle ranging from about 25° to about 50°.8. The optical lens assembly of claim 1 , wherein the second lens group has negative refractive power.9. The optical lens assembly of claim 1 , wherein the second lens group comprises one or two lenses.10. The optical lens assembly of claim 1 , further comprising a third lens group located between the second lens group and the image side and having positive or negative refractive power.11. The optical lens assembly of claim 1 , wherein a stop is provided in the first lens group.12. The optical lens assembly of claim 1 , wherein the first lens group comprises three lenses that are sequentially arranged from the object side to the image side claim 1 , and each of the three lenses has a meniscus shape convex toward the object side.13. An optical lens assembly comprising:a first lens group fixed during focusing; anda second lens group configured to move along an optical axis for focusing,wherein the first lens group and the second lens group are arranged from an object side to an image side, and {'br': None, 'i': f', '/f, 'sub': w', 'i, '−2.0<<0'}, 'the optical lens assembly satisfies the following formula{'sub': i', 'w, 'where fdenotes a total focal length of the optical lens assembly when focusing at an infinite object distance, and fdenotes a focal length of the second lens group.'}17. The optical lens assembly of claim 13 , ...
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03-01-2019 дата публикации
Номер: US20190004287A1
Принадлежит:
An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The first lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis. The fifth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis. The seventh lens is formed in a shape so that a surface thereof on the image plane side has at least one inflexion point and is concave near an optical axis. 1. An imaging lens comprising:a first lens;a second lens having at least one surface formed in an aspheric shape;a third lens having at least one surface formed in an aspheric shape;a fourth lens having at least one surface formed in an aspheric shape;a fifth lens having two surfaces each formed in an aspheric shape;a sixth lens having two surfaces each formed in an aspheric shape; anda seventh lens having two surfaces each formed in an aspheric shape, arranged in this order from an object side to an image plane side,wherein said imaging lens has a total of seven lenses,said first lens, said second lens, said third lens, said fourth lens, said fifth lens, said sixth lens, and said seventh lens are arranged respectively with a space in between,said first lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof,said fifth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof, andsaid seventh lens is formed in a shape so that a surface thereof on the image plane side has at least one inflexion point and is concave near an optical axis thereof.2. The imaging lens according to claim 1 , wherein said first lens has an Abbe's number υd1 claim 1 , said second ...
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03-01-2019 дата публикации
Номер: US20190004288A1
Принадлежит:
An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The first lens is formed in a shape so that a surface on the object side is convex near an optical axis. The second lens is formed in a shape so that a surface on the image plane side is concave near an optical axis. The fifth lens is formed in a shape so that a surface on the image plane side is concave near an optical axis. The seventh lens is formed in a shape so that a surface on the image plane side has one inflexion point. 1. An imaging lens comprising:a first lens having positive refractive power;a second lens having at least one surface formed in an aspheric shape;a third lens having at least one surface formed in an aspheric shape;a fourth lens having at least one surface formed in an aspheric shape;a fifth lens having two surfaces each formed in an aspheric shape;a sixth lens having two surfaces each formed in an aspheric shape; anda seventh lens having negative refractive power and two surfaces each formed in an aspheric shape, arranged in this order from an object side to an image plane side,wherein said imaging lens has a total of seven lenses,said first lens, said second lens, said third lens, said fourth lens, said fifth lens, said sixth lens, and said seventh lens are arranged respectively with a space in between,said first lens is formed in a meniscus shape so that a surface thereof on the object side is convex near an optical axis thereof,said second lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof,said fifth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof, andsaid seventh lens is formed in a shape ...
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03-01-2019 дата публикации
Номер: US20190004290A1
Принадлежит:
An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The second lens is formed in a meniscus shape near an optical axis. The third lens is formed in a meniscus shape so that a surface on the object side is convex near an optical axis. The sixth lens is formed in a meniscus shape near an optical axis. The seventh lens is formed in a shape so that a surface on the image plane side has at least one inflexion point. The first lens and the second lens have specific Abbe's numbers. 1. An imaging lens comprising:a first lens having positive refractive power;a second lens having at least one surface formed in an aspheric shape;a third lens having at least one surface formed in an aspheric shape;a fourth lens having at least one surface formed in an aspheric shape;a fifth lens having two surfaces each formed in an aspheric shape;a sixth lens having positive refractive power and two surfaces each formed in an aspheric shape; anda seventh lens having two surfaces each formed in an aspheric shape, arranged in this order from an object side to an image plane side,wherein said imaging lens has a total of seven lenses,said first lens, said second lens, said third lens, said fourth lens, said fifth lens, said sixth lens, and said seventh lens are arranged respectively with a space in between,said second lens is formed in a meniscus shape near an optical axis thereof,said third lens is formed in a meniscus shape so that a surface thereof on the object side is convex near an optical axis thereof,said sixth lens is formed in a meniscus shape near an optical axis thereof,said seventh lens is formed in a shape so that a surface thereof on the image plane side has at least one inflexion point, and [{'br': None, 'i': 'd', ' ...
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03-01-2019 дата публикации
Номер: US20190004291A1
Принадлежит:
An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The first lens is formed in a shape so that a surface on the object side is convex near an optical axis. The third lens is formed in a shape so that a surface on the object side is convex near an optical axis. The seventh lens is formed in a shape so that a surface on the image plane side has at least one inflexion point and is concave near an optical axis. The fourth lens and the fifth lens have specific Abbe's numbers. 1. An imaging lens comprising:a first lens;a second lens having at least one surface formed in an aspheric shape;a third lens having at least one surface formed in an aspheric shape;a fourth lens having at least one surface formed in an aspheric shape;a fifth lens having two surfaces each formed in an aspheric shape;a sixth lens having two surfaces each formed in an aspheric shape; anda seventh lens having two surfaces each formed in an aspheric shape, arranged in this order from an object side to an image plane side,wherein said imaging lens has a total of seven lenses,said first lens, said second lens, said third lens, said fourth lens, said fifth lens, said sixth lens, and said seventh lens are arranged respectively with a space in between,said first lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof,said third lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof,said seventh lens is formed in a shape so that a surface thereof on the image plane side has at least one inflexion point and is concave near an optical axis thereof, and [{'br': None, 'i': 'd', '20<ν4<35,'}, {'br': None, 'i': 'd', '20<ν5<35.'}], "said ...
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03-01-2019 дата публикации
Номер: US20190004296A1
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The zoom lens of the present invention includes a positive lens unit LP (LULP) disposed closest to an object side, a negative lens unit LNF (LULNF) disposed at an image side of LULP, and an aperture stop disposed at image side of LULNF. The zoom lens further includes at image side of aperture stop, successively in order from object side to image side, a positive lens unit LP, a negative lens unit LN (LULN), a positive lens unit LP (LULP), and a negative lens unit LN (LULN), in which intervals between adjacent lens units are changed during zooming. LULN moves during focusing. The focal length and the total length of zoom lens at a telephoto end, the changing amount from interval between LULP and LULN at a wide angle end to that at telephoto end, and the total length of zoom lens at wide angle end are appropriately set. 22. The zoom lens according to claim 1 , wherein the lens unit LP does not move during zooming.10. The zoom lens according to claim 1 , consisting of claim 1 , in order from the object side to the image side claim 1 , a first lens unit having a positive refractive power claim 1 , a second lens unit having a negative refractive power claim 1 , an aperture stop claim 1 , a third lens unit having a positive refractive power claim 1 , a fourth lens unit having a negative refractive power claim 1 , a fifth lens unit having a positive refractive power claim 1 , and a sixth lens unit having a negative refractive power claim 1 , whereinthe first lens unit is the lens unit LP,the second lens unit is the lens unit LNF,{'b': '1', 'the third lens unit is the lens unit LP,'}{'b': '1', 'the fourth lens unit is the lens unit LN,'}{'b': '2', 'the fifth lens unit is the lens unit LP, and'}{'b': '2', 'the sixth lens unit is the lens unit LN.'}11. The zoom lens according to claim 1 , consisting of claim 1 , in order from the object side to the image side claim 1 , a first lens unit having a positive refractive power claim 1 , a second lens unit having a negative ...
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13-01-2022 дата публикации
Номер: US20220011553A1
The present application discloses an optical imaging lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens having refractive powers in order from an object side to an image side along an optical axis. The first lens has a negative refractive power. The fourth lens has a positive refractive power. The eighth lens has a negative refractive power. At least one of the first lens to the eighth lens has a non-rotationally symmetrical aspherical lens surface, and the maximum TV distortion TDT in an imaging range of the optical imaging lens group satisfies: |TDT|≤3.5%. 1. An optical imaging lens group , comprising a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens , a seventh lens and an eighth lens having refractive powers in order from an object side to an image side along an optical axis , whereinthe first lens has a negative refractive power;the fourth lens has a positive refractive power;the eighth lens has a negative refractive power;at least one of the first lens to the eighth lens has a non-rotationally symmetrical aspherical lens surface; andthe maximum TV distortion TDT in an imaging range of the optical imaging lens group satisfies: |TD|≤3.5%.2. The optical imaging lens group according to claim 1 , wherein an image height IHx in an X-axis direction of the optical imaging lens group and an image height IHy in a Y-axis direction of the optical imaging lens group satisfy: √{square root over (IH+IH)}≤4.0 mm.3. The optical imaging lens group according to claim 1 , wherein a semi-field of view Semi-FOVx in an X-axis direction of the optical imaging lens group and a semi-field of view Semi-FOVy in a Y-axis direction of the optical imaging lens group satisfy: tan(Semi-FOVy)/tan(Semi-FOVx)<2.0.4. The optical imaging lens group according to claim 2 , wherein values of effective radii of respective lens surfaces of an object side surface of the ...
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08-01-2015 дата публикации
Номер: US20150009577A1
Принадлежит:
A zoom lens includes, in order from the object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit includes a negative lens and a positive lens. The zoom lens satisfies the following conditional expression (1): 8. The image pickup apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a zoom lens according to ; and'}an image pickup element disposed on the image side of the zoom lens and having an image pickup surface that receives an image formed by the zoom lens. The present application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2012-023896 filed on Feb. 7, 2012 and Japanese Patent Application No. 2013-1056 filed on Jan. 8, 2013; the entire contents of which are incorporated herein by reference.1. Field of the InventionThe present invention relates a zoom lens and an image pickup apparatus equipped with the same.2. Description of the Related ArtIn recent years, digital cameras that pick up an image of an object using a solid state image pickup element such as a CCD or CMOS have replaced film cameras and become the mainstream. Furthermore, various categories of digital cameras ranging from popular-priced compact type cameras to function-rich cameras for professionals have been developed.Users of popular-priced digital cameras wish to enjoy easy shooting in various shooting situations anywhere at any time. For this reason, such users favor small size digital cameras, especially slim digital cameras that can be conveniently carried in a pocket of clothes or a bag. Therefore, a further reduction in the size of the taking lens system is demanded.Moreover, while a wide angle of view is demanded in terms of the zoom range, image pickup apparatuses equipped with a zoom lens having a configuration that can be manufactured at low cost while having high optical ...
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27-01-2022 дата публикации
Номер: US20220026687A1
An image capturing lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially arranged from an object side toward an image side. One or more of the lenses is an aspherical lens made of a glass material, and the sixth lens has positive refractive power. 1. An image capturing lens system comprising:a first lens having negative refractive power;a second lens having a refractive power;a third lens having a convex image-side surface;a fourth lens having a convex image-side surface;a fifth lens having negative refractive power;a sixth lens having positive refractive power and a convex object-side surface; anda seventh lens having a refractive power,wherein the first to seventh lenses are sequentially arranged from an object side toward an image plane,wherein the imaging capturing lens system comprises a total number of seven lenses with refractive power, andwherein TTL/2Y<3.9,where TTL is a distance from an object side of the first lens to the imaging plane, and 2Y is a diagonal length of the imaging plane.2. The image capturing lens system of claim 1 , wherein the first lens has a concave image-side surface.3. The image capturing lens system of claim 1 , wherein the second lens has a convex object-side surface.4. The image capturing lens system of claim 1 , wherein the second lens has a concave image-side surface.5. The image capturing lens system of claim 1 , wherein the third lens has a convex object-side surface.6. The image capturing lens system of claim 1 , wherein the third lens has a convex image-side surface.7. The image capturing lens system of claim 1 , wherein the fourth lens has positive refractive power.8. The image capturing lens system of claim 1 , wherein the fourth lens has a convex object-side surface.9. The image capturing lens system of claim 1 , wherein the fourth lens has a convex image-side surface.10. The image capturing lens system of claim 1 , wherein the fifth lens ...
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27-01-2022 дата публикации
Номер: US20220026688A1
Принадлежит:
A lens for filming includes a plurality of movable lenses and arranged apart from each other in the direction of an optical axis, and which move in the direction of the optical axis for focusing, and a fixed lens, which does not move, is provided between at least one pair of lenses adjacent to each other among them. 1. A lens for filming , comprising:a plurality of movable lenses arranged apart from each other in the direction of an optical axis, and which move in the direction of the optical axis for focusing,wherein a fixed lens, which does not move, is provided between at least one pair of movable lenses adjacent to each other among the plurality of movable lenses.2. The lens for filming claim 1 , as defined in claim 1 ,wherein a movable lens arranged closest to a subject side among the plurality of movable lenses has negative power, andwherein at least one movable lens arranged toward an image formation side of the movable lens having the negative power has positive power.3. The lens for filming claim 2 , as defined in claim 2 ,wherein the movable lens having the negative power has a concave surface toward the subject side and a concave surface toward the image formation side, andwherein the movable lens having the positive power has at least a convex surface toward the subject side out of the subject side and the image formation side.7. The lens for filming claim 1 , as defined in claim 1 ,wherein the fixed lens is a cemented lens of a lens having negative power and a lens having positive power.8. The lens for filming claim 1 , as defined in claim 1 ,wherein the movable lenses and the fixed lens are arranged toward the subject side of the position of a stop of the lens for filming.12. The lens for filming claim 2 , as defined in claim 2 ,wherein the fixed lens is a cemented lens of a lens having negative power and a lens having positive power.13. The lens for filming claim 2 , as defined in claim 2 ,wherein the movable lenses and the fixed lens are arranged ...
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12-01-2017 дата публикации
Номер: US20170010449A1
Принадлежит:
An imaging lens includes a first lens group having positive refractive power; a second lens group having positive refractive power; and a third lens group having negative refractive power, arranged in this order from an object side to an image plane side. The first lens group includes a first lens having positive refractive power, a second lens, and a third lens. The second lens group includes a fourth lens having positive refractive power and a fifth lens having negative refractive power. The third lens group includes a sixth lens and a seventh lens having negative refractive power. The seventh lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. The surface of the seventh lens on the image plane side is formed in an aspheric shape having at least one inflexion point. 1. An imaging lens comprising:a first lens group having positive refractive power;a second lens group having positive refractive power; anda third lens group having negative refractive power, arranged in this order from an object side to an image plane side,wherein said first lens group includes a first lens having positive refractive power, a second lens, and a third lens,said second lens group includes a fourth lens having positive refractive power and a fifth lens having negative refractive power,said third lens group includes a sixth lens and a seventh lens having negative refractive power,said seventh lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii, andsaid surface of the seventh lens on the image plane side is formed in an aspheric shape having at least one inflexion point.2. The imaging lens according to claim 1 , wherein said second lens has a focal length f2 and said third lens has a focal length f3 so that the following conditional expression is satisfied:{'br': None, 'i': f', 'f, '0.1<2/3<0.6.'}7. An ...
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12-01-2017 дата публикации
Номер: US20170010454A1
A microscope optical system includes a first lens group having a positive power, a second lens group, and a third lens group including a positive lens. The first lens group includes: a first lens component arranged closest to an object, the first lens component including a first meniscus lens that has a meniscus shape with a concave surface facing the object side; a second lens component having a positive power that has a meniscus lens shape with the concave surface facing the object side; and a cemented lens including a positive lens and a negative lens that is made of a higher-dispersion material than a material of the positive lens. When NA, β, D, Drepresent a numerical aperture of the microscope optical system, a lateral magnification of the third lens group, a spacing between the third lens group and an image plane, a spacing between the second lens group and the third lens group, the microscope optical system satisfies the following conditional expressions: 1. A microscope optical system comprising in order from an object side:a first lens group having a positive refractive power;a second lens group; anda third lens group including a positive lens, wherein a first lens component that is arranged closest to an object, the first lens component including a first meniscus lens that has a meniscus shape with a concave surface facing the object side;', 'a second lens component having a positive refractive power that has a meniscus lens shape with the concave surface facing the object side, the second lens component being arranged close to the first lens component on an image side of the first lens component; and', 'a cemented lens including a positive lens and a negative lens that is made of a higher-dispersion material than a material of the positive lens,, 'the first lens group includesa height of an on-axis marginal ray becomes maximum in a lens component closest to an image in the first lens group,a spacing between the second lens group and the third lens group ...
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14-01-2016 дата публикации
Номер: US20160011404A1
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An imaging lens composed of a positive first lens group, an aperture stop, a negative second lens group, and a positive third lens group disposed in order from the object side. The first lens group includes one negative lens and one positive lens disposed in order from the object side. The second lens group includes one negative lens and one positive lens, has at least one aspherical surface, and is composed of three lenses or less, in which the most object side surface and the most image side surface of the second lens group are concave and convex surfaces respectively. The third lens group is composed of a negative lens with a concave surface on the object side and one or more positive lenses disposed in order from the object side. 1. An imaging lens composed of a first lens group having a positive refractive power , an aperture stop , a second lens group having a negative refractive power , and a third lens group having a positive refractive power disposed in order from the object side , wherein:the first lens group includes one negative lens and one positive lens disposed in order from the object side;the second lens group is composed of three lenses or less, includes one negative lens and one positive lens, and has at least one aspherical surface, wherein the most object side surface of the second lens group is a concave surface and the most image side surface of the second lens group is a convex surface; andthe third lens group is composed of one negative lens with a concave surface on the object side and one or more positive lenses disposed in order from the object side.3. The imaging lens as claimed in claim 1 , wherein the second lens group is composed of three lenses of a negative lens with a concave surface on the object side claim 1 , a positive lens with a convex surface on the image side claim 1 , and an aspherical lens disposed in order from the object side.5. The imaging lens as claimed in claim 4 , wherein the imaging lens satisfies a conditional ...
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14-01-2016 дата публикации
Номер: US20160011407A1
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An imaging lens is constituted by, in order from the object side to the image side: a negative front group; a stop; and a positive rear group. The front group is constituted by, in order from the object side to the image side, a front group negative lens group, constituted by at least two negative lenses, and a front group positive lens group including one negative lens and one positive lens, in which a positive lens is provided most toward the object side. The rear group includes one negative lens and one positive lens. Conditional Formula (1) below is satisfied: 1. An imaging lens consisting of , in order from the object side to the image side:a front group having a negative refractive power;a stop; anda rear group having a positive refractive power;the front group consisting of, in order from the object side to the image side, a front group negative lens group having a negative refractive power, constituted by at least two negative lenses, and a front group positive lens group having a positive refractive power, including one negative lens and one positive lens, in which a positive lens is provided most toward the object side;the rear group including two cemented lenses formed by cementing a positive lens and a negative lens together, the coupling surfaces of both of the two cemented lenses being concave toward the object side; and {'br': None, 'Nan+0.01·νan<2.15 \u2003\u2003(1)'}, 'Conditional Formula (1) below being satisfiedwherein Nan is the refractive index of the negative lens provided most toward the image side within the front group positive lens group with respect to the d line, and νan is the Abbe's number of the negative lens provided most toward the image side within the front group positive lens group with respect to the d line.2. An imaging lens consisting of , in order from the object side to the image side:a front group having a negative refractive power;a stop; anda rear group having a positive refractive power;the front group consisting of, in ...
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11-01-2018 дата публикации
Номер: US20180011226A1
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An imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens sequentially arranged from a magnifying side to a narrowing side. The second lens and the third lens constitute a first composite lens, the fourth lens and the fifth lens constitute a second composite lens, and the sixth lens and the seventh lens constitute a third composite lens. The imaging lens has the advantages of small size and good imaging quality. 1. An imaging lens , comprising:a first lens;a second lens;a third lens;a fourth lens;a fifth lens;a sixth lens;a seventh lens; andan eighth lens,wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are sequentially arranged from a magnifying side to a narrowing side, the second lens and the third lens constitute a first composite lens, the fourth lens and the fifth lens constitute a second composite lens, and the sixth lens and the seventh lens constitute a third composite lens.2. The imaging lens according to claim 1 , wherein the first lens has a positive refractive power claim 1 , the second lens has a positive refractive power claim 1 , the third lens has a negative refractive power or a positive refractive power claim 1 , the fourth lens has a negative refractive power claim 1 , the fifth lens has a positive refractive power claim 1 , the sixth lens has a negative refractive power claim 1 , the seventh lens has a positive refractive power claim 1 , and the eighth lens has a positive refractive power.3. The imaging lens according to claim 2 , wherein the first lens is a biconvex lens or a meniscus shaped lens or a plano-convex lens bulging toward the magnifying side.4. The imaging lens according to claim 2 , wherein a surface of the second lens facing the magnifying side is a convex curved surface claim 2 , a surface of the third lens facing the narrowing side is a concave curved ...
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11-01-2018 дата публикации
Номер: US20180011296A1
Принадлежит:
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras. 1. An optical image capturing system , in order along an optical axis from an object side to an image side , comprising:a first lens having refractive power;a second lens having refractive power;a third lens having refractive power;a fourth lens having refractive power;a fifth lens having refractive power;a sixth lens having refractive power;a seventh lens having refractive power; andan image plane;wherein the optical image capturing system consists of the seven lenses with refractive power; at least one lens among the first lens to the third lens has positive refractive power; at least one lens among the fourth lens to the seventh lens has positive refractive power; each lens among the first lens to the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; [{'br': None, 'i': 'f/HEP≦', '1.0≦10.0;'}, {'br': None, 'i': 'HAF', '0 deg<≦150 deg; and'}, {'br': None, 'i': 'ARE/HEP', '0.9≦2()≦2.0;'}], 'wherein the optical image capturing system satisfieswhere f1, f2, f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in ...
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11-01-2018 дата публикации
Номер: US20180011297A1
Принадлежит:
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens has negative refractive force, wherein both surfaces thereof can be aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras. 1. An optical image capturing system , in order along an optical axis from an object side to an image side , comprising:a first lens having refractive power;a second lens having refractive power;a third lens having refractive power;a fourth lens having refractive power;a fifth lens having refractive power;a sixth lens having refractive power;a seventh lens having refractive power; andan image plane;wherein the optical image capturing system consists of the seven lenses with refractive power; at least one lens among the first to the third lenses has positive refractive power; at least one lens among the fourth to the seventh lenses has positive refractive power; each lens of the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; [{'br': None, 'i': 'f/HEP≦', '1.0≦10.0;'}, {'br': None, 'i': 'HAF≦', '0 deg<150 deg; and'}, {'br': None, 'i': 'SETP/STP<', '0.5≦1;'}], 'wherein the optical image capturing system satisfies{'b': 1', '2', '3', '4', '5', '6', '7', '1', '7, 'where f1, f2 f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing ...
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14-01-2021 дата публикации
Номер: US20210011258A1
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The present disclosure provides a prime lens module and an in-vehicle camera system. From an object side to an imaging side thereof, the prime lens module sequentially includes: a first lens with a negative focal power, a second lens with a negative focal power, a third lens with a positive focal power, a fourth lens with a positive focal power, a fifth lens with a positive focal power, a sixth lens with a negative focal power, and a seventh lens with a positive focal power. The first lens is a meniscus spherical lens. The second lens is a biconcave spherical lens. The third lens is a biconvex spherical lens and bonded to the second lens. The fourth lens is a biconvex spherical lens or a biconvex aspheric lens. The fifth lens is a biconvex spherical lens. The sixth lens is a biconcave spherical lens and bonded to the fifth lens. 1. A prime lens module , from an object side to an imaging side thereof , the prime lens module sequentially comprising:a first lens with a negative focal power, the first lens being a meniscus spherical lens with a concave surface facing the imaging side;a second lens with a negative focal power, the second lens being a biconcave spherical lens;a third lens with a positive focal power, the third lens being a biconvex spherical lens or a meniscus spherical lens;a fourth lens with a positive focal power, the fourth lens being a biconvex spherical lens or a biconvex aspheric lens;a fifth lens with a positive focal power, the fifth lens being a biconvex spherical lens;a sixth lens with a negative focal power, the sixth lens being a biconcave spherical lens; anda seventh lens with a positive focal power, the seventh lens being selected from a group consisting of a biconvex aspheric lens, a biconvex spherical lens, and a meniscus aspheric lens;wherein the second lens and the third lens are bonded together through optical glue; the fifth lens and the sixth lens are bonded through optical glue; one of the fourth lens and the seventh lens is a ...
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14-01-2021 дата публикации
Номер: US20210011261A1
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There is provided a compact and high-resolution imaging lens at a low cost. The imaging lens comprises in order from an object side to an image side, a first lens having positive refractive power and a convex surface facing the object side near an optical axis, a second lens having negative refractive power and a meniscus shape having the convex surface facing the object side near the optical axis, a third lens having the positive or the negative refractive power, a fourth lens having the convex surface facing the image side near the optical axis, a fifth lens having the positive refractive power, a sixth lens having the positive refractive power, and a seventh lens having the negative refractive power and a concave surface facing the image side near the optical axis, the image side surface of said seventh lens is formed as an aspheric surface which changes to the convex surface at a peripheral area, the object-side surface of said fifth lens has the convex surface facing the object side near the optical axis, all lenses are single lenses arranged with an interval between lenses adjacent to each other, and below conditional expressions (1), (2) and (3) are satisfied: 116-. (canceled) The present application is based on and claims priority of a Japanese patent application No. 2017-196848 filed on Oct. 10, 2017, the entire contents of which are hereby incorporated by reference.The present invention relates to an imaging lens which forms an image of an object on a solid-state image sensor such as a CCD sensor or a C-MOS sensor used in a compact imaging device.In recent years, it becomes common that camera function is mounted in many information terminal equipment. It is expected that development of various products with the camera function pursuing convenience and satisfaction of customers will continue accordingly.The imaging lens used in such equipment is required to be compact and to have high-resolution performance, and spread of the imaging lens and reduction in ...
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14-01-2021 дата публикации
Номер: US20210011262A1
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There is provided a compact and high-resolution imaging lens at a low cost. The imaging lens comprises in order from an object side to an image side, a first lens having positive refractive power and a convex surface facing the object side near an optical axis, a second lens having negative refractive power and a meniscus shape having the convex surface facing the object side near the optical axis, a third lens having the positive or the negative refractive power, a fourth lens having the convex surface facing the image side near the optical axis, a fifth lens having the positive refractive power, a sixth lens having the positive refractive power, and a seventh lens having the negative refractive power and a concave surface facing the image side near the optical axis, the image side surface of said seventh lens is formed as an aspheric surface which changes to the convex surface at a peripheral area, the object-side surface of said fifth lens has the convex surface facing the object side near the optical axis, all lenses are single lenses arranged with an interval between lenses adjacent to each other, and below conditional expressions (1), (2) and (3) are satisfied: 116-. (canceled) The present application is based on and claims priority of a Japanese patent application No. 2017-196848 filed on Oct. 10, 2017, the entire contents of which are hereby incorporated by reference.The present invention relates to an imaging lens which forms an image of an object on a solid-state image sensor such as a CCD sensor or a C-MOS sensor used in a compact imaging device.In recent years, it becomes common that camera function is mounted in many information terminal equipment. It is expected that development of various products with the camera function pursuing convenience and satisfaction of customers will continue accordingly.The imaging lens used in such equipment is required to be compact and to have high-resolution performance, and spread of the imaging lens and reduction in ...
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10-01-2019 дата публикации
Номер: US20190011662A1
There are provided a variable magnification optical system and a control method thereof which are capable of relatively accurately adjusting a positional relationship between a variable magnification optical device and an imaging surface of an imaging device according to a zoom amount. A zoom lens included in the variable magnification optical device is positioned at a telephoto end and a wide angle end, and shift amounts ΔS and ΔS tilt angles θ and θ rotation angles ϕ and ϕ and focusing adjustment amounts Δ and Δ of the variable magnification optical device are set by a user and are stored. In a case where a zoom amount of the zoom lens is set to a desired value by the user, a shift amount corresponding to the set zoom amount is calculated by using the stored shift amounts ΔS and ΔS The positional relationship between the variable magnification optical device and the imaging surface of the imaging device is adjusted so as to have the calculated shift amount. 1. A variable magnification optical system comprising:a variable magnification optical device that forms a subject image on an imaging surface of an imaging device by changing a magnification of the subject image according to a variable magnification amount;a variable magnification amount setting device that sets a variable magnification amount of the variable magnification optical device;a shift mechanism that relatively slides the variable magnification optical device with respect to the imaging surface;a rotation mechanism that relatively rotates the variable magnification optical device around the imaging surface with the optical axis of the variable magnification optical device or the central axis of the imaging surface as a center;a position adjustment amount memory that stores position adjustment amounts using the shift mechanism and the rotation mechanism which correspond to at least two kinds of variable magnification amounts;a position adjustment amount calculating unit that calculates a position ...
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10-01-2019 дата публикации
Номер: US20190011675A1
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An imaging lens includes a first lens having at least one aspheric surface; a second lens having at least one aspheric surface; a third lens having at least one aspheric surface; a fourth lens having at least one aspheric surface; a fifth lens having at least one aspheric surface; a sixth lens having two aspheric surfaces; and a seventh lens having two aspheric surfaces, arranged in this order from an object side to an image plane side respectively with a space in between. The imaging lens has a total of seven lenses. The first lens is formed in a shape so that a surface on the object side is convex near an optical axis. The seventh lens is formed in a shape so that a surface on the image plane side is concave near the optical axis. The fifth lens and the sixth lens have specific Abbe's numbers. 1. An imaging lens comprising:a first lens having at least one aspheric surface;a second lens having at least one aspheric surface;a third lens having at least one aspheric surface;a fourth lens having at least one aspheric surface;a fifth lens having at least one aspheric surface;a sixth lens having two aspheric surfaces; anda seventh lens having two aspheric surfaces, arranged in this order from an object side to an image plane side respectively with a space in between,wherein said imaging lens has a total of seven lenses,said first lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis thereof,said seventh lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof, and [{'br': None, '20<νd5<35,'}, {'br': None, '20<νd6<35.'}], "said fifth lens has an Abbe's number νd5 and said sixth lens has an Abbe's number νd6 so that the following conditional expressions are satisfied:"}2. The imaging lens according to claim 1 , wherein said first lens has an Abbe's number νd1 claim 1 , said second lens has an Abbe's number νd2 claim 1 , and said third lens has an Abbe's number νd3 so ...
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10-01-2019 дата публикации
Номер: US20190011676A1
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An imaging lens includes a first lens having at least one aspheric surface and positive refractive power; a second lens having at least one aspheric surface; a third lens having at least one aspheric surface; a fourth lens having at least one aspheric surface; a fifth lens having at least one aspheric surface; a sixth lens having two aspheric surfaces; and a seventh lens having two aspheric surfaces and negative refractive power, arranged in this order from an object side to an image plane side respectively with a space in between. The imaging lens has a total of seven lenses. The fourth lens and the sixth lens have specific Abbe's numbers. 1. An imaging lens comprising:a first lens having at least one aspheric surface and positive refractive power;a second lens having at least one aspheric surface;a third lens having at least one aspheric surface;a fourth lens having at least one aspheric surface;a fifth lens having at least one aspheric surface;a sixth lens having two aspheric surfaces; anda seventh lens having two aspheric surfaces and negative refractive power, arranged in this order from an object side to an image plane side respectively with a space in between,wherein said imaging lens has a total of seven lenses, and [{'br': None, 'i': 'd', '40<ν4<75,'}, {'br': None, 'i': 'd', '20<ν6<35.'}], "said fourth lens has an Abbe's number νd4 and said sixth lens has an Abbe's number νd6 so that the following conditional expressions are satisfied:"}2. The imaging lens according to claim 1 , wherein said first lens has an Abbe's number νd1 claim 1 , said second lens has an Abbe's number νd2 claim 1 , and said third lens has an Abbe's number νd3 so that the following conditional expressions are satisfied:{'br': None, 'i': 'd', '40<ν1<75,'}{'br': None, 'i': 'd', '20<ν2<35,'}{'br': None, 'i': 'd', '40<ν3<75.'}3. The imaging lens according to claim 1 , wherein said seventh lens has an Abbe's number νd7 so that the following conditional expression is satisfied:{'br': None, ' ...
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10-01-2019 дата публикации
Номер: US20190011682A1
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A zoom lens includes lens units whose interval between adjacent units is changed during zooming, wherein the lens units consist of, in order from an object side, a positive first unit, an negative intermediate lens group including a unit, a positive (n−1)-th unit, and a positive n-th unit, wherein the first unit moves during zooming, wherein an interval between the (n−1)-th and n-th units is smaller at telephoto end than at wide angle end, wherein the n-th unit includes positive lenses LPL made of a material having proper Abbe number, wherein the n-th lens unit includes a positive lens LPH arranged on the image side of the lenses LPL and made of a material having proper refractive index and wherein a distance between lens surfaces on the most-object side and on the most-image side of the n-th lens unit, and back focus at the wide angle end are properly set. 10. The zoom lens according to claim 1 ,wherein the intermediate lens group consists of a second lens unit having a negative refractive power arranged adjacent to and on the image side of the first lens unit, andwherein the second lens unit is configured to move during focusing.11. The zoom lens according to claim 1 ,wherein the intermediate lens group consists of a second lens unit having a negative refractive power arranged adjacent to and on the image side of the first lens unit, and a third lens unit having a negative refractive power arranged on the image side of the second lens unit, andwherein the third lens unit is configured to move during focusing.12. The zoom lens according to claim 1 , wherein an interval between a lens unit arranged adjacent to and on the object side of the (n−1)-th lens unit and the (n−1)-th lens unit is smaller at the telephoto end than at the wide angle end.13. The zoom lens according to claim 1 ,wherein the intermediate lens group includes a second lens unit having a negative refractive power arranged adjacent to and on the image side of the first lens unit, andwherein an ...
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10-01-2019 дата публикации
Номер: US20190011816A1
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The optical system includes an aperture stop, a plurality of lenses disposed on an enlargement conjugate side further than the aperture stop, and at least one lens disposed on a reduction conjugate side further than the aperture stop. The plurality of lenses includes, in order from the enlargement conjugate side to the reduction conjugate side, a first movable negative lens unit and a second movable negative lens unit each having a negative refractive power for changing field curvature by being moved in an optical axis direction of the optical system. The first and second movable negative lens units are moved such that at least one of their movement directions and their movement amounts are mutually different. The movement of the first and second movable negative lens units causes no change in conjugate length of an entire system of the optical system. 1. An optical system comprising:an aperture stop;a plurality of lenses disposed on an enlargement conjugate side further than the aperture stop; andat least one lens disposed on a reduction conjugate side further than the aperture stop,wherein:the plurality of lenses includes, in order from the enlargement conjugate side to the reduction conjugate side, a first movable negative lens unit and a second movable negative lens unit each having a negative refractive power for changing field curvature by being moved in an optical axis direction of the optical system;the first and second movable negative lens units are moved such that at least one of their movement directions and their movement amounts are mutually different; andthe movement of the first and second movable negative lens units causes no change in conjugate length of an entire system of the optical system.2. An optical system according to claim 1 , wherein the first and second movable negative lens units are mutually adjacent in the optical axis direction.3. An optical system according to claim 1 , wherein the first movable negative lens unit is disposed at a ...
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09-01-2020 дата публикации
Номер: US20200012073A1
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An optical system according to an example embodiment includes a first lens unit that has a positive refractive power, and a second lens unit that is disposed on an image side of the first lens unit and that has a positive refractive power. The second lens unit moves when focusing from infinity to an object at near distance. The second lens unit includes, disposed in order from the object side towards an image side, a first positive lens, an aperture stop, and a second positive lens. Anomalous partial dispersibilities of the first positive lens and the second positive lens are defined. 2. The optical system according to claim 1 , {'br': None, 'i': DL', 'DL, '0.50<1/2<3.00'}, 'wherein the following conditional expression is satisfied{'b': 1', '2, 'where DL is a distance, on an optical axis, between an image-side lens surface of the first positive lens and the aperture stop, and DL is a distance, on the optical axis, between an object-side lens surface of the second positive lens and the aperture stop.'}3. The optical system according to claim 1 , {'br': None, '1.80
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09-01-2020 дата публикации
Номер: US20200012074A1
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An imaging lens includes a first lens having positive refractive power; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof. 1. An imaging lens comprising:a first lens having positive refractive power;a second lens;a third lens having negative refractive power;a fourth lens;a fifth lens;a sixth lens; anda seventh lens, arranged in this order from an object side to an image plane side,wherein said first lens is formed in a meniscus shape near an optical axis thereof,said third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof, andsaid sixth lens is formed in a meniscus shape near an optical axis thereof.3. The imaging lens according to claim 1 , wherein said second lens has a focal length f2 and said third lens has a focal length f3 so that the following conditional expression is satisfied:{'br': None, 'i': f', 'f, '0.1<2/3<0.6.'}8. An imaging lens comprising:a first lens having positive refractive power;a second lens;a third lens;a fourth lens having positive refractive power;a fifth lens;a sixth lens; anda seventh lens, arranged in this order from an object side to an image plane side,wherein said first lens is formed in a meniscus shape near an optical axis thereof,said third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof, andsaid sixth lens is formed in a meniscus shape near an optical axis thereof.10. The imaging lens according to claim 8 , wherein said second lens has a focal length ...
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09-01-2020 дата публикации
Номер: US20200012075A1
Принадлежит:
An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having negative refractive power; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof. 1. An imaging lens comprising:a first lens having positive refractive power;a second lens;a third lens;a fourth lens;a fifth lens having negative refractive power;a sixth lens; anda seventh lens, arranged in this order from an object side to an image plane side,wherein said first lens is formed in a meniscus shape near an optical axis thereof,said third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof, andsaid sixth lens is formed in a meniscus shape near an optical axis thereof.3. The imaging lens according to claim 1 , wherein said second lens has a focal length f2 and said third lens has a focal length f3 so that the following conditional expression is satisfied:{'br': None, 'i': >f', '/f, '0.123<0.6.'}8. An imaging lens comprising:a first lens having positive refractive power;a second lens;a third lens;a fourth lens;a fifth lens;a sixth lens; anda seventh lens having negative refractive power, arranged in this order from an object side to an image plane side,wherein said seventh lens is formed in a meniscus shape near an optical axis thereof, and {'br': None, 'vd3<35'}, "said third lens has an Abbe's number vd3 so that the following conditional expression is satisfied:"}10. The imaging lens according to claim 8 , wherein said second lens has a focal length f2 and said third lens has a focal length f3 so that the following conditional ...
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09-01-2020 дата публикации
Номер: US20200012076A1
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An imaging lens includes a stop; a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having positive refractive power; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a shape so that a surface thereof directing to the image plane side is concave near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof. 1. An imaging lens comprising:a stop;a first lens having positive refractive power;a second lens having negative refractive power;a third lens;a fourth lens having positive refractive power;a fifth lens;a sixth lens; anda seventh lens, arranged in this order from an object side to an image plane side,wherein said first lens is formed in a meniscus shape near an optical axis thereof,said third lens is formed in a shape so that a surface thereof directing to the image plane side is concave near an optical axis thereof, andsaid sixth lens is formed in a meniscus shape near an optical axis thereof.323. The imaging lens according to claim 1 , wherein said second lens has a focal length f and said third lens has a focal length f so that the following conditional expression is satisfied:{'br': None, 'i': f', 'f, '0.1<2/3<0.6.'}8. An imaging lens comprising:a first lens group;a second lens group; anda third lens group having negative refractive power, arranged in this order from an object side to an image plane side,wherein said first lens group includes a first lens, a second lens, and a third lens,said second lens group includes a fourth lens and a fifth lens,said third lens group includes a sixth lens and a seventh lens,wherein said fifth lens is formed in a meniscus shape near an optical axis thereof,said seventh lens is formed in a meniscus shape near an optical axis thereof, and{'b': '3 ...
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09-01-2020 дата публикации
Номер: US20200012078A1
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A photographing optical lens assembly includes eight lens elements, the eight lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side. At least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and includes at least one inflection point. 1. A photographing optical lens assembly comprising eight lens elements , the eight lens elements being , in order from an object side to an image side:a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element;wherein each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;wherein at least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and comprises at least one inflection point; [{'br': None, '55.0 degrees
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09-01-2020 дата публикации
Номер: US20200012080A1
An optical imaging system includes: a first lens having a concave image-side surface; a second lens having refractive power; a third lens having a concave image-side surface; a fourth lens having a concave object-side surface or a convex image-side surface; a fifth lens having refractive power; a sixth lens having a concave image-side surface; and a seventh lens having negative refractive power. The first to seventh lenses are sequentially disposed from an object side and 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens. 1. An optical imaging system comprising:a first lens comprising a concave image-side surface;a second lens comprising refractive power;a third lens comprising a concave image-side surface;a fourth lens comprising a convex object-side surface or a convex image-side surface;a fifth lens comprising refractive power;a sixth lens comprising a concave image-side surface; anda seventh lens comprising negative refractive power,wherein the first to seventh lenses are sequentially disposed from an object side, andwherein 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens.2. The optical imaging system of claim 1 , wherein the first lens comprises positive refractive power.3. The optical imaging system of claim 1 , wherein the second lens comprises negative refractive power.4. The optical imaging system of claim 1 , wherein the third lens comprises positive refractive power.5. The optical imaging system of claim 1 , wherein an object-side surface of the fifth lens is concave.6. The optical imaging system of claim 1 , wherein an image-side surface of the seventh lens comprises an inflection point.7. The optical imaging system of claim 1 , wherein an f-number of the optical imaging system is 1.8 or less.8. The optical imaging system of claim 1 , ...
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09-01-2020 дата публикации
Номер: US20200012082A1
The imaging optical system consists of first and second optical systems in order from a magnified side. The second optical system forms an image on an image display surface as an intermediate image. The first optical system forms the intermediate image on a magnified-side conjugate plane. A height H of a principal ray of light having a maximum angle of view becomes maximum on a lens surface of the whole system (having focal length f) on the most magnified side, among heights of principal rays of light having a maximum angle of view on respective lens surfaces, satisfying predetermined Conditional Expressions (1) and (2): 1. An imaging optical system capable of projecting an image , displayed on an image display device disposed on a reduced-side conjugate plane , as a magnified image on a magnified-side conjugate plane , the system comprising , in order from a magnified side:a first optical system which is constituted by a plurality of lenses; anda second optical system which is constituted by a plurality of lenses,wherein the second optical system forms the image displayed on the image display device as an intermediate image,the first optical system forms the intermediate image on the magnified-side conjugate plane,a height of a principal ray of light having a maximum angle of view becomes maximum on a lens surface of the whole system on the most magnified side, among heights of principal rays of light having a maximum angle of view on respective lens surfaces, and [{'br': None, 'i': H×|f', 'L×I, '0.03<|/()<0.09\u2003\u2003(1)'}, {'br': None, 'i': H×f', 'fo×I, 'sup': 2', '2, '0.8
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15-01-2015 дата публикации
Номер: US20150015966A1
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Provided is a zoom lens in which a variation in aberration with respect to a temperature change is small and excellent optical characteristics can be easily obtained. The zoom lens includes multiple lens units in which a distance between adjacent ones of the multiple lens units changes for zooming. When an average value of a change in refractive index with respect to a temperature change within a temperature range of from 0° C. to 40° C. is ΔNav, at least one lens unit L of the multiple lens units includes multiple optical elements A made of materials satisfying a conditional expression: |ΔNav|>5.0×10. When an anomalous partial dispersion ratio for a g-line and an F-line is ΔθgF, at least one optical element A of the multiple optical elements A satisfies a conditional expression: |ΔθgF|>0.0272. 1. A zoom lens , comprising multiple lens units in which a distance between adjacent ones of the multiple lens units changes for zooming , wherein: {'br': None, 'i': 'N', 'sup': '−5', '|Δav|>5.0×10;'}, 'when an average value of a change in refractive index with respect to a temperature change within a temperature range of from 0° C. to 40° C. is ΔNav, at least one lens unit L of the multiple lens units comprises multiple optical elements A made of materials satisfying the following conditional expression{'sub': Aθ', 'θ, 'claim-text': {'br': None, 'i': 'gF', 'sub': 'Aθ', '|Δθ|>0.0272; and'}, 'when an anomalous partial dispersion ratio for a g-line and an F-line is ΔθgF, at least one optical element A of the multiple optical elements A satisfies the following conditional expression{'sub': θ', 'θ, 'claim-text': [{'br': None, 'i': /fi', 'fL, '|1/(Σ(1)×)|<2.2; and'}, {'br': None, 'i': pj', 'nj, '−1.5<Σ(Δφ)/Σ(Δφ)<−0.66.'}], 'when i indicates an order of the at least one optical element A in the at least one lens unit L counted from a light incident side, an i-th optical element A in the at least one lens unit L counted from the light incident side is an i-th optical element, j ...
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03-02-2022 дата публикации
Номер: US20220035130A1
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An optical imaging lens includes a first lens element to a fifth lens element from an object side to an image side in order along an optical axis. The first lens element has positive refracting power and a periphery region of the image-side surface of the first lens element is concave, a periphery region of the object-side surface of the second lens element is convex, a periphery region of the object-side surface of the third lens element is convex, the fifth lens element has negative refracting power and optical axis region of the object-side surface of the fifth lens element is concave to satisfy (G12+G23+G34)/(G45+T5)≥2.500 and EFL*Fno/HFOV≥3.500 mm/degree. 1. An optical imaging lens , from an object side to an image side in order along an optical axis comprising: a first lens element , a second lens element , a third lens element , a fourth lens element , and a fifth lens element , each lens element having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through , the optical imaging lens comprising:the first lens element has positive refracting power and a periphery region of the image-side surface of the first lens element is concave;a periphery region of the object-side surface of the second lens element is convex;a periphery region of the object-side surface of the third lens element is convex; andthe fifth lens element has negative refracting power and an optical axis region of the object-side surface of the fifth lens element is concave;lens elements of the optical imaging lens are only the above-mentioned five lens elements;EFL is an effective focal length of the optical imaging lens, Fno is the f-number of the optical imaging lens, HFOV stands for the half field of view of the optical imaging lens, T5 is a thickness of the fifth lens element along the optical axis, G12 is an air gap between the first lens ...
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03-02-2022 дата публикации
Номер: US20220035131A1
An image lens assembly includes five lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof. 1. An image lens assembly comprising five lens elements , the five lens elements being , in order from an object side to an image side along an optical path , a first lens element , a second lens element , a third lens element , a fourth lens element and a fifth lens element;wherein the first lens element has positive refractive power, the second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, the fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof, and the fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof; [{'br': None, 'i': V', 'V, '3+4<70;'}, {'br': None, 'i': R', 'R', 'R', 'R, '0.50<(3+4)/(3−4); and'}, {'br': None, 'i': R', 'R', 'R', 'R, '0<(9+10)/(9−10).'}], 'wherein an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, a curvature radius of an object-side surface of the second lens element is R3, a curvature radius of ...
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03-02-2022 дата публикации
Номер: US20220035132A1
An image capturing lens system includes four lens groups which include eight lens elements. The four lens groups are, in order from an object side to an image side: first, second, third and fourth lens groups. The eight lens elements are, in order from the object side to the image side: first, second, third, fourth, fifth, sixth, seventh and eighth lens elements. The first and second lens elements respectively have positive and negative refractive power. At least one lens element in the second through fourth lens groups has an inflection point. A focal length of the image capturing lens system is varied by changing axial distances between the four lens groups in a zooming process. The second lens group is moved relative to the first lens group along an optical axis in the zooming process. The image capturing lens system has a long-focal-length end and a short-focal-length end. 1. An image capturing lens system comprising four lens groups , the four lens groups comprising eight lens elements , the four lens groups being , in order from an object side to an image side along an optical path , a first lens group , a second lens group , a third lens group and a fourth lens group , the eight lens elements being , in order from the object side to the image side along the optical path , a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element , a seventh lens element and an eighth lens element , and each of the eight lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;wherein the first lens group comprises the first lens element and the second lens element, the second lens group comprises the third lens element, the fourth lens element and the fifth lens element, the third lens group comprises the sixth lens element and the seventh lens element, the fourth lens group comprises the eighth lens element, the first lens ...
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03-02-2022 дата публикации
Номер: US20220035134A1
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An camera optical lens includes, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, a fifth lens, a sixth lens having a positive refractive power, and a seventh lens having a negative refractive power, and satisfies following conditions: 59.00≤v1≤82.00; and 3.00≤R12/R11≤10.00, where v1 denotes an abbe number of the first lens; R11 denotes a central curvature radius of an object side surface of the sixth lens; and R12 denotes a central curvature radius of an image side surface of the sixth lens. The camera optical lens satisfies requirements of ultra-thinness, a wide angle, and a large aperture while achieving good optical performance. 1. A camera optical lens , comprising , from an object side to an image side:a first lens having a positive refractive power;a second lens having a negative refractive power;a third lens having a negative refractive power;a fourth lens having a positive refractive power;a fifth lens;a sixth lens having a positive refractive power; anda seventh lens having a negative refractive power, [{'br': None, 'i': 'v', '59.00≤1≤82.00; and'}, {'br': None, 'i': R', 'R, '3.00≤12/11≤10.00,'}], 'wherein the camera optical lens satisfies following conditionswherev1 denotes an abbe number of the first lens;R11 denotes a central curvature radius of an object side surface of the sixth lens; andR12 denotes a central curvature radius of an image side surface of the sixth lens.2. The camera optical lens as described in claim 1 , further satisfying a following condition:{'br': None, 'i': d', 'd, '1.20≤4/5≤5.00,'}whered4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens; andd5 denotes an on-axis thickness of the third lens.3. The camera optical lens as described in claim 1 , further satisfying a following ...
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03-02-2022 дата публикации
Номер: US20220035135A1
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An image capturing lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element with positive refractive power has the object-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has the image-side surface being convex in a paraxial region thereof. The sixth lens element has positive refractive power. The seventh lens element has the image-side surface being concave in a paraxial region thereof. 1. An image capturing lens assembly comprising seven lens elements , the seven lens elements being , in order from an object side to an image side along an optical path:a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side;wherein the second lens element with positive refractive power has the object-side surface being convex in a paraxial region thereof and the image-side surface being concave in a paraxial region thereof; the fourth lens element with positive refractive power has the image-side surface being convex in a paraxial region thereof; the fifth lens element has the image-side surface being convex in a paraxial region thereof; the sixth lens element has positive refractive power; the seventh lens element has the image-side surface being concave in a paraxial region thereof; at least one of the object-side surface and the image-side surface of at least one lens element of the seven lens elements is ...
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03-02-2022 дата публикации
Номер: US20220035138A1
An optical-lens-set includes a first lens element of a concave image-side surface near its optical-axis, a sixth lens element of negative refractive power and of a concave image-side surface near its optical-axis to go with a fifth lens element of a concave object-side surface near its optical-axis or with a seventh lens element of negative refractive power. The Abbe number υ1 of the first lens element, the Abbe number υ3 of the third lens element, the Abbe number υ4 of the fourth lens element, the Abbe number υ5 of the fifth lens element, the Abbe number υ6 of the sixth lens element and the Abbe number υ7 of the seventh lens element together satisfy 5≤5υ1−(υ3+υ4+υ5+υ6+υ7). 1. An optical imaging lens set , from an object side toward an image side in order along an optical axis comprising: a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element , a sixth lens element and a seventh lens element , the first lens element to the seventh lens element each having an object-side surface facing toward the object side to allow imaging rays to pass through as well as an image-side surface facing toward the image side to allow the imaging rays to pass through , wherein:the first lens element has positive refractive power and has an image-side surface with a concave portion in a vicinity of the optical-axis;the second lens element has an object-side surface with a convex portion in a vicinity of the optical-axis;the third lens element has an object-side surface with a convex portion in a vicinity of the optical-axis;the fourth lens element has an image-side surface with a concave portion in a vicinity of the optical-axis;the fifth lens element has an image-side surface with a convex portion in a vicinity of its circular periphery; andthe sixth lens element has an image-side surface with a concave portion in a vicinity of the optical-axis;wherein lens elements included by the optical imaging lens set are only the seven ...
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17-01-2019 дата публикации
Номер: US20190018221A1
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A zoom lens including, in order from an object side, a positive first lens group G, a negative second lens group G, a composite positive lens group which includes, at the most object side, a positive third lens group G, which is consisting of one or more lens groups having positive refractive power, and which has positive refractive power as a whole, and a composite negative lens group which includes, at the most object side, a negative A lens group, which additionally includes at least a negative B lens group, and which has negative refractive power as a whole. In the zoom lens, changing focal length is performed by varying the distances between the lens groups, and a predetermined condition is satisfied. 1. A zoom lens comprising , in order from an object side ,a first lens group having positive refractive power,a second lens group having negative refractive power,a composite positive lens group having positive refractive power as a whole, anda composite negative lens group having negative refractive power as a whole, whereinthe composite positive lens group comprises, at a most object side, a third lens group having positive refractive power, and comprises one or more lens groups having positive refractive power,the composite negative lens group comprises, at a most object side, a negative A lens group having negative refractive power,changing focal length is performed by varying distances between the lens groups, and [{'br': None, 'i': fpw×fpt', 'fw×ft, 'sup': 1/2', '1/2, '0.050<()/()<0.205\u2003\u2003(1)'}, {'br': None, 'i': f', 'f, '2.50<|1/2|<5.10\u2003\u2003(2)'}], 'the following conditional expressions are satisfiedwherefpw: focal length of the composite positive lens group at a wide angle end,fpt: focal length of the composite positive lens group at a telephoto end,fw: focal length of the zoom lens at the wide angle end,ft: focal length of the zoom lens at the telephoto end,f1: focal length of the first lens group, andf2: focal length of the second lens ...
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17-01-2019 дата публикации
Номер: US20190018223A1
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An imaging lens includes a first lens having one aspheric surface and positive refractive power; a second lens having one aspheric surface and negative refractive power; a third lens having one aspheric surface; a fourth lens having one aspheric surface; a fifth lens having one aspheric surface; a sixth lens having two aspheric surfaces; and a seventh lens having two aspheric surfaces, arranged in this order from an object side to an image plane side respectively with a space in between. The imaging lens has a total of seven lenses. The first lens is formed in a meniscus shape so that a surface on the object side is convex near an optical axis. The sixth lens is formed in a shape so that a surface on the image plane side is concave near an optical axis. The fifth lens has a specific Abbe's number. 1. An imaging lens comprising:a first lens having at least one aspheric surface and positive refractive power;a second lens having at least one aspheric surface and negative refractive power;a third lens having at least one aspheric surface;a fourth lens having at least one aspheric surface;a fifth lens having at least one aspheric surface;a sixth lens having two aspheric surfaces; anda seventh lens having two aspheric surfaces, arranged in this order from an object side to an image plane side respectively with a space in between,wherein said imaging lens has a total of seven lenses,said first lens is formed in a meniscus shape so that a surface thereof on the object side is convex near an optical axis thereof,said sixth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis thereof, and {'br': None, 'i': 'd', '20<ν5<35.'}, "said fifth lens has an Abbe's number νd5 so that the following conditional expression is satisfied:"}2. The imaging lens according to claim 1 , wherein said first lens has an Abbe's number νd1 claim 1 , said second lens has an Abbe's number νd2 claim 1 , and said third lens has an Abbe's number νd3 ...
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17-01-2019 дата публикации
Номер: US20190018226A1
A zoom optical system comprises, in order from an object: a first lens group (G 1 ) having positive refractive power; a second lens group (G 2 ) having negative refractive power; and a subsequent group (GR) including at least one lens group. Upon zooming, distances between the first lens group (G 1 ) and the second lens group (G 2 ) and between the second lens group (G 2 ) and the subsequent group (GR) change. The subsequent group (GR) comprises a focusing group (Gfc) having negative refractive power for focusing. The first lens group (G 1 ) comprises a 1-1st lens that has positive refractive power and is disposed closest to the object. The focusing group comprises a lens (L 37 ) having positive refractive power and a lens (L 38 ) having negative refractive power. Following conditional expressions are satisfied: 1.00< fFP /(− fFN )<2.00 1.80< f 1/ fw <2.50 where, fFP denotes a focal length of a lens with largest positive refractive power in the focusing group, fFN denotes a focal length of a lens with largest negative refractive power in the focusing group, and f1 denotes a focal length of the first lens group, and fw denotes a focal length of the zoom optical system in a wide angle end state.
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17-01-2019 дата публикации
Номер: US20190018228A1
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A compact orthoscopic lens is corrected for monochromatic and chromatic aberrations over wavelengths from 450 to 2450 nm with an angular FOV of 5.56° vertical and 66° horizontal. The 4.36″ effective focal length lens with f-number of 4 is compact measuring 5.2″ from the first optical surface to the image. The lens includes, in order from object to image, a first optical group having a negative optical power; a second optical group having a positive optical power and a third optical group having a negative optical power. The first optical group consists of two elements, the second optical group consists of three elements, one a doublet, and the third optical group consists of two elements. A physical aperture stop is positioned inside the second optical group. Powers of groups and elements, shapes, refractive indices, Abbe numbers and partial dispersions of glasses are selected so the lens is apochromatic and orthoscopic. 1. A compact orthoscopic and apochromatic visible and near-infrared (VNIR) and shortwave infrared (SWIR) lens system , in order from an object plane to an image plane , comprising:a first optical group having a negative optical power;a second optical group having a positive optical power;a third optical group having a negative optical power;an aperture positioned inside said second optical group;wherein said lens system is compact, as measured from a first optical surface to said image plane;wherein said lens system is orthoscopic regarding residual distortion over a full field of view; andwherein said lens system is apochromatic over a spectral range of 450 nm to 2550 nm.2. The compact orthoscopic and apochromatic visible and near-infrared (VNIR) and shortwave infrared (SWIR) lens system of claim 1 , wherein said first optical group includes exactly two optical lens elements claim 1 , said two optical elements have claim 1 , in order from the object claim 1 , negative and positive optical powers.3. The compact orthoscopic and apochromatic visible ...
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16-01-2020 дата публикации
Номер: US20200018934A1
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An optical photographing lens assembly includes six lens elements, in order from an object side to an image side, the six lens elements are a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an image-side surface being convex in a paraxial region thereof, both an object-side surface and the image-side surface of the seventh lens element are aspheric, and at least one of the object-side surface and the image-side surface of the sixth lens element includes at least one inflection point. 1. An optical photographing lens assembly comprising six lens elements , in order from an object side to an image side , the six lens elements being , a first lens element , a second lens element , a third lens element , a fourth lens element , a fifth lens element and a sixth lens element;wherein the first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof; the second lens element has negative refractive power; the fourth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof; the fifth lens element has an object-side surface being concave in a paraxial region thereof; the sixth lens element has an object-side surface being concave in a paraxial region thereof and comprising at least one inflection point in an off-axis region thereof; [{'br': None, 'i': f', 'f, '−0.90<4/|2|≤0;'}, {'br': None, 'i': 'TL/f<', '0.50<1.0; and'}, {'br': None, 'i': 'Fno<', '1.20<2.50.'}], 'wherein a focal length of the second lens element is f2, a focal length of the fourth lens element is f4, a focal length of the optical photographing lens assembly is f, an axial distance ...
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16-01-2020 дата публикации
Номер: US20200018935A1
An optical system for stereoscopic vision includes a first optical system and a second optical system. Each of the first optical system and the second optical system includes a front unit, a stop, and a rear unit having a positive refractive power. Each of the two front units includes a first negative lens, and the first negative lens is a lens positioned nearest to an object. Each of the two stops moves in a direction parallel to a plane including an optical axis of the first optical system and an optical axis of the second optical system. Both the stops move to be drawn away from a central axis or move to come closer to the central axis, and the following conditional expressions (1) and (2) are satisfied: 1. An optical system for stereoscopic vision , comprising:a first optical system; anda second optical system, whereinthe first optical system and the second optical system are identical optical systems,each of the first optical system and the second optical system includes in order from an object side, a front unit, a stop, and a rear unit having a positive refractive power, andeach of the two front units includes a first negative lens,the first negative lens is a lens positioned nearest to an object, among lenses in the front unit,each of the two stops move in a direction parallel to a plane including an optical axis of the first optical system and an optical axis of the second optical system,both the stops move to be drawn away from a central axis or move to come closer to the central axis,each of the two rear units includes a focusing lens,the two focusing lenses move in a direction along the optical axis, and [{'br': None, 'i': '
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21-01-2021 дата публикации
Номер: US20210018728A1
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The present disclosure discloses an optical imaging lens group including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, each of which has refractive power. Each of the first lens and the fourth lens has positive refractive power. The eighth lens has negative refractive power. An object-side surface of the third lens is a convex surface, and an image-side surface thereof is a concave surface. An object-side surface of the fourth lens is a concave surface, and an image-side surface thereof is a convex surface. A total effective focal length f of the optical imaging lens group, an effective focal length f2 of the second lens, and an effective focal length f3 of the third lens satisfy |f/f2|+|f/f3|<1. 1. An optical imaging lens group , sequentially from an object side to an image side along an optical axis , comprising: a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens , a seventh lens and an eighth lens , each of which has refractive power ,wherein,each of the first lens and the fourth lens has positive refractive power;the eighth lens has negative refractive power;an object-side surface of the third lens is a convex surface, and an image-side surface of the third lens is a concave surface;an object-side surface of the fourth lens is a concave surface, and an image-side surface of the fourth lens is a convex surface; and|f/f2|+|f/f3|<1, where f is a total effective focal length of the optical imaging lens group, f2 is an effective focal length of the second lens, and f3 is an effective focal length of the third lens.2. The optical imaging lens group according to claim 1 , wherein 1
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21-01-2021 дата публикации
Номер: US20210018729A1
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The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein each of the first through the eighth lenses has refractive power. The first lens has positive refractive power. The third lens has positive refractive power, and each of an object-side surface and an image-side surface thereof is a convex surface. An object-side surface of the sixth lens is a convex surface. The eighth lens has negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly may satisfy f/EPD≤2.0. 1. An optical imaging lens assembly , sequentially from an object side to an image side along an optical axis , comprising: a first lens , a second lens , a third lens , a fourth lens , a fifth lens , a sixth lens , a seventh lens and an eighth lens , each of which has refractive power ,wherein,the first lens has positive refractive power;the third lens has positive refractive power, and each of an object-side surface and an image-side surface of the third lens is a convex surface;an object-side surface of the sixth lens is a convex surface; andthe eighth lens has negative refractive power, and an object-side surface of the eighth lens is a concave surface,f/EPD≤2.0, where f is a total effective focal length of the optical imaging lens assembly, and EPD is an entrance pupil diameter of the optical imaging lens assembly.2. The optical imaging lens assembly according to claim 1 , wherein 1.7
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