Light source device, method for manufacturing the same and filament

A filament showing high radiation characteristics and hardly suffering from disconnection and film separation is provided by using a high melting point metal compound such as tantalum carbide. As the filament, a filament comprising a tungsten base material 30 , a tantalum layer 31 coating the tungsten base material 30 , and a tantalum carbide layer 32 coating the tantalum layer 31 is used. High adhesion is obtained at the interface of the layers of tungsten and tantalum by utilizing high adhesion of tungsten and tantalum.

LIQUID FILAMENT FOR INCANDESCENT LIGHTS

A filament for a light bulb includes a tube and a filament material within the tube, wherein the filament material is configured to be in a liquid state while the light bulb is in use. 1. A method of generating light , comprising:providing energy to a filament material via a supply wire; andcausing, from the energy, the filament material to achieve a liquid state, the filament material being contained in a tube.2. The method of claim 1 , wherein the filament material is electrically conductive while in the liquid state.3. The method of claim 1 , wherein the tube is thicker at each end than at a location between the two ends.4. The method of claim 1 , wherein a first outer surface of the tube and a second outer surface of the tube are configured such that a temperature of the tube is lower at each end of the tube than at a location between the two ends.5. The method of claim 1 , wherein a first thickness and outer diameter of the tube and a second thickness and outer diameter of the tube are configured such that a stress on the tube is lower at each end of the tube than at a location between the two ends.6. The method of claim 1 , wherein the tube includes a cap having a thickness configured to at least one of (a) reduce a stress of the tube at at least one of the ends of the tube claim 1 , (b) reduce the temperature of the tube at at least one of the ends of the tube claim 1 , or (c) reduce the temperature of a supply wire. The method of claim 1 , wherein the tube includes at least one of hafnium carbide claim 1 , hafnium nitride claim 1 , or tantalum 4 hafnium carbide 5.7. The method of claim 1 , wherein the filament material includes at least one of tungsten claim 1 , hafnium claim 1 , or rhenium.8. The method of claim 1 , wherein the filament has a designed emissivity claim 1 , and wherein the designed emissivity is relatively high in the visible wavelengths and relatively low in at least one of ultraviolet wavelengths and infrared wavelengths.9. The method of ...

SYSTEM FOR PROVIDING THERMAL ENERGY RADIATION DETECTABLE BY A THERMAL IMAGING UNIT

A thermal radiation marker adapted to emit radiation within the thermal portion of the infrared spectrum. According to some embodiments of the invention, the thermal radiation marker may include an incandescent filament and a glass or quartz enclosure. The incandescent filament may be adapted to produce radiation at least within the thermal portion of the infrared spectrum. The glass or quartz enclosure may include at least a portion that is substantially thin, and may enclose pressurized inert gas and the incandescent filament surrounded by the inert gas. At least a portion of the glass or quartz enclosure may be sufficiently thin so as to enable good transmittance therethrough for thermal radiation approximately in the 3-5 μm wavelength band. The pressurized inert gas enclosed within the glass or quartz enclosure and surrounding the incandescent filament may enable a regenerative cycle to take place within the enclosure. 1. A thermal radiation marker , comprising:an enclosure;an incandescent filament for producing radiation at least within the thermal portion of the infrared spectrum;pressurized inert gas, wherein the pressurized inert gas and the incandescent filament are enclosed in the enclosure, and the incandescent filament is surrounded by the inert gas;a glass or quartz emission aperture having a thickness of approximately 1 mm or less and is usable for providing good transmittance therethrough for thermal radiation above 3 μm and up to 5 μm in wavelength.2. The thermal radiation marker according to claim 1 , wherein the glass or quartz emission aperture is usable claim 1 , including by virtue of its thickness claim 1 , for providing good transmittance therethrough for thermal radiation including within the 3.4-4.8 μm atmospheric window.3. The thermal radiation marker according to claim 1 , wherein the thickness of at least a portion of the glass or quartz emission aperture is 0.5 mm or less.4. The thermal radiation marker according to claim 1 , wherein the ...

HALOGEN HEATER

A heater of an embodiment includes a bulb, a filament, a gas, and metallic members. The filament is disposed in the inside portion of the bulb along a tube axis and includes a radiative unit and non-radiative units. The radiative unit performs radiation when applying current. The non-radiative units are disposed at either end of the radiative unit in a tube axis direction, are electrically connected to the radiative unit, and do not perform radiation relative to the radiative unit when applying current. The bulb includes a radiative region and non-radiative regions. The radiative unit is disposed in the radiative region. The non-radiative units are disposed in the non-radiative regions. The metallic members are disposed in the inside portion of the bulb, are thermally conductible, and are disposed in the non-radiative regions. 1. A halogen heater comprising:a bulb;a filament disposed in an inside portion of the bulb along a tube axis;a gas filling the inside portion of the bulb; anda thermally-conductive metallic member disposed in the inside portion of the bulb, a radiative unit which performs radiation when applying current, and', 'a non-radiative unit which is each disposed at either end of the radiative unit in the tube axis direction, which is electrically connected to the radiative unit, and which is not radiative relative to the radiative unit when applying current,, 'wherein the filament includes'}wherein the bulb includesa radiative region in which the radiative unit is disposed, anda non-radiative region in which the non-radiative unit is disposed,wherein the metallic member is disposed in the non-radiative region.2. The heater according to claim 1 ,wherein the non-radiative unit and the metallic member are disposed to overlap each other in a radial view,wherein the non-radiative unit is 5 cm or greater in length in the tube axis direction,wherein the metallic member is 5 cm or greater in length in the tube axis direction, andwherein the non-radiative unit ...

Method of producing a halogen lamp and halogen lamp

The present invention relates to a method for producing a halogen lamp, comprising the following steps: providing a glass tube blanket; dip-coating of the glass tube blanket using a sol gel process having an inorganic coating; forming a lamp bulb from the coated glass tube blanket. The present invention relates further to a halogen lamp produced accordingly. 1. A method of producing a halogen lamp , the method comprising:Providing a glass tube blanket;Dip-coating the glass tube blanket using a sol gel process having an inorganic coating;Forming a lamp bulb from the coated glass tube blanket.2. The method of claim 1 , wherein the glass tube blanket is suspended and dipped in the sol for dip-coating such that an end portion of the glass tube blanket remains uncoated.3. The method of claim 2 , wherein electrical components of the halogen lamp are introduced into the glass tube blanket for forming the lamp bulb and are melted portion-wise in the uncoated end portion of the glass tube blanket.4. The method of claim 1 , wherein the glass tube blanket is made of hard glass.5. The method of claim 1 , wherein a low pressure is generated in the inner cavity volume of the glass tube blanket for coating the inner surface of the glass tube blanket such that a sol determined for the sol gel process rises up until a predefined extent within the cavity.6. The method of claim 1 , wherein the coating is applied during dip-coating both on the inner surface and on the outer surface of the glass tube blanket.7. The method of claim 1 , wherein the coating applied during a dip-coating comprises a coating reflecting infrared radiation.8. The method of claim 7 , wherein the dip-coating of the glass tube blanket using a sol gel process comprises a structure of an alternating layer system claim 7 , which comprises in particular between 5 and 30 single layers and having a thickness of 0.3 μm to 3 μm.9. The method of claim 7 , wherein the alternating layer system alternately comprises single ...

TUBULAR LIGHT SOURCE HAVING OVERWIND

Embodiments of the present invention generally relate to a tubular lamp with a coiled filament having an overwind wrapped around the coil. In one embodiment, the tubular lamp has a coiled coil filament, and the coiled coil has an overwind wrapped around the coiled coil. 1. A tubular lamp , comprising:a tubular envelope having a first end and a second end;a coiled filament having a first diameter, the coiled filament extending from the first end to the second end of the tubular envelope, wherein the coiled filament has an overwind having a second diameter; anda ratio of the first diameter to the second diameter ranging from about 3:1 to about 15:1.2. The tubular lamp of claim 1 , wherein the coiled filament comprises potassium doped tungsten.3. The tubular lamp of claim 2 , wherein the overwind comprises tungsten.4. The tubular lamp of claim 2 , wherein the overwind comprises potassium doped tungsten.5. The tubular lamp of claim 1 , wherein the ratio of the first diameter to the second diameter is between about 6:1 and about 12:1.6. The tubular lamp of claim 1 , wherein the overwind has a pitch ratio between about 1.1 and about 2.0.7. The tubular lamp of claim 1 , wherein the tubular envelope is an arc.8. The tubular lamp of claim 1 , wherein the tubular envelope is circular claim 1 , wherein the first end and the second end abut.9. The tubular lamp of claim 1 , wherein the coiled filament comprises a coiled coil.10. A tubular halogen lamp for a rapid thermal processing (RTP) apparatus claim 1 , comprising:an envelope having a first end and a second end; anda coiled filament extending from the first end to the second end, wherein the coiled filament has an overwind.11. The tubular halogen lamp of claim 10 , wherein the coiled filament comprises potassium doped tungsten.12. The tubular halogen lamp of claim 11 , wherein the overwind comprises tungsten.13. The tubular halogen lamp of claim 11 , wherein the overwind comprises potassium doped tungsten.14. The tubular ...

Lamp

A lamp according to an embodiment includes a bulb, a filament, a gas, and a reflective film. The filament is disposed in the interior of the bulb along the tube axis. The gas is filled in the interior of the bulb. The reflective film is formed on the outer circumferential surface of the bulb and reflects a light from the filament toward the interior of the bulb. Further, the reflective film is formed by depositing a reflective film material containing TiO, SiO, and BaSOon the outer circumferential surface of the bulb. 1. A lamp , comprising:a bulb;a filament disposed in the interior of the bulb along the tube axis;a gas filled in the interior of the bulb; anda reflective film formed on the outer circumferential surface of the bulb and reflecting a light from the filament toward the interior of the bulb, wherein{'sub': 2', '2', '4, 'the reflective film contains TiO, SiO, and BaSO.'}2. The lamp according to claim 1 , whereinthe reflective film is formed by depositing a reflective film material on the outer circumferential surface of the bulb, and{'sub': 2', '4, 'the reflective film material contains TiO(33.7 wt % to 54.5 wt %) and BaSO(6.8 wt % to 18.1 wt %).'}3. The lamp according to claim 2 , wherein{'b': 1', '2, 'sub': 4', '2, 'the reflective film material is configured such that a particle size a at the first peak in the particle size distribution of BaSOis smaller than a particle size a at the second peak in the particle size distribution of TiO.'}4. The lamp according to claim 3 , wherein{'b': 1', '1', '2', '2, 'the particle size a (μm) at the first peak in the particle size distribution satisfies the following formula: 0.1≦a≦1, and the particle size a (μm) at the second peak in the particle size distribution satisfies the following formula: 1≦a≦20.'}5. The lamp according to claim 3 , wherein{'b': 1', '2, 'the reflective film material is configured such that the occupancy of particles having the particle size a at the first peak is higher than the occupancy of ...

Patent DE2928254C2

Luminous aid for covered or closed spaces

FIELD: lighting engineering. SUBSTANCE: luminous aid reflector and glass cover, as well as spiral filament held in position by two supply leads brought out of luminous aid interior filled with gas. Supply leads are brought out at reflector-to-cover joint from inner space of luminous aid. EFFECT: improved design. 12 cl, 6 dwg 956$56$0с ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ “” 2 039 396. МН 04 4 61/36 13) СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 505257307, 14.08.1992 (30) Приоритет: 17.08.1991 ОЕ С 9110182.4; © 9207949.0 (46) Дата публикации: 09.07.1995 (56) Ссылки: Патент США М 2148314, кл. 313-111, 1939. (71) Заявитель: Вильхельм Кох ГмбХ (0Е) (72) Изобретатель: Вольфганг Бер[ОЕ] (73) Патентообладатель: Вильхельм Кох ГмбХ (0Е) (54) СВЕТЯЩЕЕСЯ СРЕДСТВО ДЛЯ ПРИМЕНЕНИЯ В ПЕРЕКРЫТЫХ ИЛИ ЗАКРЫТЫХ ПРОСТРАНСТВАХ (57) Реферат: Использование в светотехнике, В частности в светящихся средствах, применяемых для внутренней отделки в качестве встроенных светильников. Сущность изобретения: светящееся средство, содержит рефлектор и крышку из стекла, а также спиральную нить канала, удерживаемую двумя ПОДВОДЯЩИМИ проводами, выведенными из заполненного газом внутреннего пространства светящегося средства. Подводящие провода выведены в месте стыка между рефлектором и крышкой из внутреннего пространства светящегося средства. 11 з. п. ф-лы, 6 ил. 2039396 С1 КО 956$56$0с ПЧ Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) 13) ВО “” 2039 396 ' (51) Е. С1.6 Н 01 3 61/36 СЛ 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 5052573/07, 14.08.1992 (30) Рногйу: 17.08.1991 ОЕ С 9110182.4; © 9207949.0 (46) Рае ог риБИсаНоп: 09.07.1995 (71) АррИсапе: уг'кпе!‘т Кокп СтЬКИ (ОЕ) (72) пуетог. УМУоЧаапа Ве[оЕ] (73) Ргорпеюг: мкле!т Кокй СтЬККВ (ОЕ) (54) ОММОЦ$ АШ РОК СОУЕКЕО ОК СЕОЗЕО ЗРАСЕЗ (57) АБзГасЕ: НЕО: Набу епдтеегпа. ЗОУВЗТАМСЕ: |иптоц$ а гейесюг апЯ д]аз$ соуег, аз \е|] аз эрга| Шатеп пед ш розШоп Бу о зирру еаа$ Бгочай{ оцё от | ...

Incandescent lamp with reflection coating

회전 대칭형 전구(10)와 적외선 방사를 반사하는 층(14)을 가진 백열 전등 특히, 할로겐 백열 전등(9)이 타원체 부분 윤곽을 가진다. 전구의 타원체 부분 윤곽은 그 반장축, 따라서 그 초점축이 세로축에 수직하게 즉, 상기 전구(10)의 회전축에 수직하게 방향 지어지는 타원 선분에 의해 생성된다. R과 Wr 이 각각 상기 전구(10)의 최대 반경과 상기 회전 대칭형 발광 소자(15)의 최대 반경을 나타낼 때, 상기 반장축(a)의 길이는 R < b < R + 5 Wr 의 범위에 있는 것이 바람직하다. 전등 효율의 향상 이외에도 상기 전등(9)은 전구(10)의 내부에 중심축 상에 배치된 발광 소자(15)상으로의 균일한 적외선 반사로 인해 균일한 온도 분포를 가지는 점에 특징이 있다.

Filament lamp

Incandescent tubular lamp filament fixture

Incandescent lamp

Patent FR743122A

Incandescent electric lamps

Improvement to tubular incandescent lamps

Infra-red source

HALOGEN INCANDESCENCE LAMP

Improvements to incandescent electric lamps

Transparent body electric lamp - has plastics body with outer surface used as reflector of bulb light

Lamp with a light source located within the transparent body of the lamp. The rear outer surface of the lamp body forms the reflector on which the light from one light source is reflected largely forward through inner total reflection, so that the light leaves the lamp through a front surface of the lamp body. The lamp body is to a large extent made from plastic material shaped for the reception of a bulb which serves as the light source and which is attached by a clear adhesive. The front surface of the lamp forms a lens of the Fresnel type making it into a ray projector.

Patent FR2244258B3

Light tube and process for its manufacture

Patent FR2221813A1

Incandescent lamp

Incandescent tubular lamp

Incandescent lamp

Patent FR2335039B1

Light bulb for incandescent electric lamp

Low-voltage gas-filled incandescent electric lamp

Filament alignment spud for incandescent lamps

A spud made of refractory metal wire in the shape of a ring with a loop on each side radially aligns and provides electricity to a filament in a double ended tungsten halogen lamp. The spud has a leg extending from the end of each loop, one of which is attached to the filament and the other forming part of an inlead assembly. This spud is particularly useful with relatively small size double ended tungsten-halogen lamps having an infrared reflecting coating on the surface of the vitreous filament chamber.

Improvements to incandescent electric lamps and their supports

Improvements made to the filament support intended for incandescent lamps

Incandescent electric lamp

Filament lamp and light irradiation type heating apparatus

(과제)필라멘트 램프에 공급하는 전류를 증가시킨 경우라도, 시일링부에 매설된 금속박이 용단(溶斷)되는 일없이, 금속박의 폭을 종래의 것보다 넓게 함으로써, 피처리체의 승온 속도를 향상시키는 것을 목적으로 한다. (해결 수단)발광부와, 발광부의 양단에 연속해서 형성된 한 쌍의 편평한 시일링부를 가지는 직관 형상의 발광관을 구비하고, 복수의 코일 형상의 필라멘트가 발광부의 내부에 각각 발광관의 관축 방향으로 순차적으로 늘어서 설치되고, 당해 각 필라멘트의 양단에 한 쌍의 내부 리드가 각각 연결되고, 복수의 금속박이 서로 이간하여 각 시일링부에 각각 매설되고, 각 내부 리드가 각 금속박에 대해서 각각 접속되고, 각 외부 리드가 각 금속박에 대해서 각각 접속되어 이루어지는 필라멘트 램프에 있어서, 상기 시일링부는, 상기 발광부의 외경보다 큰 폭이 되도록 구성되고, 상기 발광관의 관축에 직교하는 방향의 양단에 배치된 2개의 금속박의 측가장자리부를, 상기 관축과 평행하게 신장하는 두 직선 사이에 둔 폭은, 상기 발광부의 내경보다 큰 것을 특징으로 한다.

Patent FR2221813B1

TUBULAR INCANDESCENCE LAMP WITH SPACED SEGMENTS

Improvements to rectilinear filament lamps

Incandescent electric lamp

Lighting device

Die Erfindung betrifft eine Leuchteinrichtung, umfassend eine Glühwendel (2) oder dergleichen Glühmittel, die in einem Kolben positioniert ist, wobei der Kolben (1) eine im wesentlichen zylindrische oder ovale Wandung (3) aufweist. An einer Stirnseite (4) des Kolbens (1) ist ein für die IR-Strahlung durchlässiger und hitzebeständiger Filter (5) vorgesehen, der sich zumindest bereichsweise über die Stirnseite (4) erstreckt und insbesondere vakuumdicht an der Wandung (3) des Kolbens (1) angeordnet ist, derart, daß der IR-Anteil der erzeugten Strahlung über den Filter (5) stirnseitig aus dem Kolben (1) austreten kann. <IMAGE>

Lamp filament

An incandescent lamp element comprises an envelope and a filament (10) supported therein by a plurality of spaced supports. The filament comprises a helical coil of wire with sections (20, 21) having at least two different pitches. The first sections (20) have a pitch which enables the filament to be operated at a required colour temperature, and the second sections have a pitch which enables the filament to be supported by the supports.

Filament support for tubular lamps

Tungsten-halogen lamp

Inventor: Bell, Dean A. et al. Invention: Tungsten-halogen Lamp Abstract of the Disclosure A low wattage sub-miniature, tungsten-halogen lamp (10) having high efficacy and long life. The lamp (10) has a cylindrical envelope (12) in the T-1 to T-1 1/4 range containing a fill gas having a halogen minor constituent and an inert gas major constituent. The lamp (10) operates at high fill gas pressures, and lower halogen gas content.

Electric reflector lamp

Incandescent electric lamp

Incandescent lamp

Incandescent lamp with reflection coating

A találmány tárgya villamos izzólámpa, elsősorban halogén izzólámpa(9) forgásszimmetrikus lámpaburával (10) és az infravörös sugárzástvisszaverő réteggel (14). Ennek az izzólámpának ellipszoidrészkontúrja van. A lámpabura (2; 10) ellipszoid részkontúrját egyellipszisszakasz (3) generálja, amelynek az a fél nagytengelye éskövetkezőleg fokális tengelye (F1F2) merőleges a hossztengelyre,vagyis merőleges a lámpabura (10) forgástengelyére (RA). Az a félnagytengely hossza előnyös módon az R<a<R+5·wr tartományban van, aholR a lámpabura (10) legnagyobb sugara, wr a forgásszimmetrikusvilágítótest (15) legnagyobb sugara. A lámpa (9) fokozza ahatékonyságot, és emellett egyenletesen veri vissza az infravörössugárzást a lámpaburán (10) belül központosan tengelyiránybanelhelyezett, henger alakú világítótestre (15), és ezzel egyenleteshőmérséklet-eloszlást hoz létre. ŕ The present invention relates to an electric incandescent lamp, in particular a halogen incandescent lamp (9) with a rotationally symmetrical lamp envelope (10) and an infrared reflective layer (14). This incandescent lamp has an ellipsoidal contour. The ellipsoidal sub-contour of the lamp envelope (2; 10) is generated by a single ellipse section (3) whose major axis of the half and consequently the focal axis (F1F2) are perpendicular to the longitudinal axis, i.e. perpendicular to the axis of rotation (RA) of the lamp envelope (10). The length of the half-axis is preferably in the range R <a <R + 5 · wr, where R is the largest radius of the lamp envelope (10) and wr is the largest radius of the rotationally symmetrical luminaire (15). The lamp (9) increases the efficiency and also evenly reflects the infrared radiation back to the cylindrical luminaire (15) centrally located axially inside the lamp envelope (10), thus creating a uniform temperature distribution. ŕ

Filament supports for tubular electric incandescent lamps

ABSTRACT OF THE DISCLOSURE An electric incandescent lamp comprising an axially extending filament in a tubular vitreous envelope has improved filament supports of wire whose outer turns are formed as hex-agonal loops comprising straight segments with angles between successive segments. The sharp bends at the angles decrease the springback and unwinding of the support when it is released from the mandrel, so that variations in support loop diameter with wire tension and size are reduced. The support may be fabricated through a new method and apparatus on a forming mandrel by engaging a wire in a slot in an exposed end fa? simulating a shallow helicoid. As the mandrel revolves, at least one full turn is wound around its periphery (which may be hexagonal) to form the outer envelope-engaging loop. The wire is then bent radially inwards at the shoulder of the pro-jecting portion of the helicoid face to wind filament-engaging turns around the filament and wire mandrel which extend through an axially aligned aperture in the forming mandrel. The formed support anchored to the filament is then stripped laterally off the exposed end face of the mandrel.

INFRARED HEADLIGHT.

Light emitting device

A light-emitting device comprises a light source in the form of an incandescent filament, a substantial part of which is integrated in a host element having at least one portion structured according to nanometric dimensions. The nano-structured portion is in the form of a photonic crystal or of a Bragg grating, for the purpose of obtaining an amplified or increased emission of radiation in the region of the visible.

Projector lamp filament support

Incandescent tubular lamp

Improvements in tungsten halogen incandescent lamps

Filament support for tubular lamp capsule

Filament supports (50) for supporting and centering a filament (80) in a double-ended lamp envelope (82) include an inlead portion (52) defining a central axis (94), a filament attachment portion (54) and a centering portion (56) interconnecting the inlead portion (52) and the filament attachment portion (54). The centering portion (56) contacts an inner surface of the lamp envelope (82) at a plurality of discrete, circumferentially spaced-apart contact regions that are substantially equally spaced from the central axis (94). The filament supports (50) are attached to opposite ends of the filament (80) for accurately centering the filament (80) within the lamp envelope (82). The filament supports (50) are particularly useful in a tubular incandescent lamp capsule having an infrared reflective coating (96) on its outer surface.

Halogen lamp with reflector

A halogen lamp with reflector (2) which allows a pinch seal portion (12) to be fitted onto a lamp mount portion (3) of a reflector (2) simply by inserting a lamp body (1) with a pinch seal support (4) and a lead rod support (5) into the lamp mount portion (3), thrashes the cost and prevents an inorganic adhesive (8) from contaminating a concave reflecting section (22) of the reflector (2), and is suitable for achieving high wattage. An insulating lead rod support (5) is mounted to lead rods (1b), and a pinch seal support (4) is mounted to the pinch seal portion (1a). The lead rod support (5) is inserted into a bottom aperture (3b) of the lamp mount portion (3). The pinch seal support (4) includes an insertion hole (4d) for passing the pinch seal portion (1b) therethrough, pinch seal abutting pieces (4b), reflector abutting pieces (4a), and an opening closing portion (4c) closing the front opening (6). An adhesive (8) is injected into a gap between the pinch seal portion (12) and the lamp mount portion (3).

Patent JPS5849982B2

Incandescent lamp and adapter, equipped with voltage conversion means

The invention relates to an incandescent lamp with a low voltage burner (BM) and integrated voltage conversion means (VCM). Control signals to drive the switching elements (Q1, Q2) comprised in the voltage conversion means are generated by means of a separate control circuit (CC) comprising an integrated circuit (IC). The voltage conversion means are suitable for operation at a high temperature and cause only limited amounts of EMI.

Filament support for tubular lamp

A filament support for a helically coiled filament of a tubular double-ended incandescent lamp in which the support is in the form of a wire having a first end portion extending in a loop which is circumferentially engageable with the inner wall of the envelope, a second end portion extending substantially axially of the tubular envelope and defining an inner power lead conductively coupled to a lead-in conductor, a third portion adjacent the first portion and defining several coils each of an outer diameter less than the diameter of the first portion loop and having an inner diameter dimensioned to snugly receive an end of the helically coiled filament, and a fourth portion disposed intermediate the second and third portions and having a turned section forming an abutment which limits the position of the filament relative to the filament support.

Incandescent electric lamps

Improvements to gas-filled incandescent electric lamps

Support for tubular electric lamp filaments

Reflective electric lamp for spotlights

Lamp and electric projection device

Efficient lamp with envelope having elliptical portions

A lamp includes a light transmissive envelope comprising two spaced apart elliptical portions that together form a hollow interior. The envelope has sealed end portions. Leads are in electrical contact with the filament near the end portions of the envelope for providing power to the lamp. There is a central portion of the envelope that spaces apart the elliptical portions. An electrically conductive filament is disposed in the interior of the envelope. The filament includes coiled-coil portions disposed in the elliptical portions in a coiled-coil shape and a single coil interval portion disposed between the coiled-coil portions at the central portion of the envelope. At least one filament support positions the filament near a center of the envelope. Gas is contained in the interior of the envelope.

Improvements in the construction of parabolic bulb electric lamps

Electric safety pit light

Lamp for scanning apparatus

An elongate incandescent lamp for a scanning apparatus comprises an elongate transparent tube enclosing an elongate filament supported only by its ends and maintained under tension by a compression spring surrounding a relatively low resistance slidably supported rod member that supports the corresponding end of the filament and conducts current to the filament.

Support for the filament body of a tubular lamp

Improvements relating to electric incandescent filament lamps

1,041,392. Electric incandescent lamps. GENERAL ELECTRIC CO. June 5, 1963 [Aug. 30, 1962], No. 22375/63. Heading H1F. The filament of an electric lamp having a tubular envelope 1 closed at each end by a pinch seal 2, is supported intermediate its length by at least one hair-pin shaped wire 6 having the end portions of its legs embedded in one of the pinch seals at opposite sides of the lead-in wire 4 so that the legs extend along the tube on opposite sides of the filament 3, the bight of the wire having a loop 7 encircling the filament. In the case of a longer lamp two such supports may be provided at opposite ends of the envelope. The ends of the filament are attached to thin foliated portions 5 of the leadin wires 4 within the pinch seal, preferably by welding with a tab of platinum interposed. The envelope may contain an inert gas with or without a reactive atmosphere such as a halogen, especially iodine. The support 6 may first be inserted in the tube, the filament threaded through the loop 7 and the end of the tube pinch sealed enclosing the ends of the legs of the support. The other end is then pinch sealed and the envelope evacuated and filled with the desired gas filling.

Patent BE525912A

Tungsten halogen lamp

A tungsten halogen lamp in hard glass in which the temperature gradient in the envelope is such that the top of the latter is at about 200* C. and the remainder of the lamp hotter, so that the halogen will not only keep the glass bulb clear by means of the usual regenerative halogen cycle, but will also react with impurities in the tungsten to condense them out nonregeneratively on the top of the envelope, the lamp being operated base up. To insure the proper operation of the halogen cycle, the supporting conductors for the filament are made small enough to operate at incandescence at the designed current, in contrast to the much larger diameter used for supporting conductors in ordinary incandescent lamps, where the wires operate comparatively cool and have low resistance and voltage drop. The higher voltage drop in the incandescent supporting conductor is compensated for by designing the filament coil to operate at its desired temperature at lower voltage in an atmosphere of bromine and krypton.

Incandescent filament bulb

Electric light bulb and process for its manufacture.

Electric light bulb in tube shape

Incandescent lamp with a reflecting coating

An electric incandescent lamp, in particular a halogen incandescent lam p (9) with a rotationally symmetrical lamp bulb (10) and an I.R. radiation reflecting coating (14), has an ellipsoidal partial contour. The ellipsoidal partial contour of the lamp bulb is produced by an elliptical section, the semiaxis of which is oriented vertically to the longitudinal axis, i.e. vertically to the rotational axis of the lamp bulb (10), and is longer than the greatest radiu s R of the lamp bulb. The length of the smallest semiaxis b lies preferably in the range R < b < R + 5 . w r, where R and w r respectively stand for the greate st radius of the lamp bulb (10) and the radius of the rotationally symmetrical luminou s element (15). The lamp (9) is characterized by uniform back reflection of the I.R. radiation onto the luminous element (15) arranged centrically on-ax is inside the lamp bulb (10), and thus by a regular temperature distribution, a s well as by increased lamp efficiency.

Infrared radiator has counter-balance spring for impressing tensile stress on heating element, and flexible bridging element connected with balance spring

The infrared radiator (1) has an outer envelope (2) equipped with a heating element (3). The heating element is electrically connected to a counter-balance spring (4) for impressing the tensile stress on the heating element. A gas tight seal (9) is provided in the end of the outer envelope connected to a power supply. The balance spring is connected with a flexible bridging element (5) made of molybdenum. The bridging element is arranged parallel to the central axis of the balance spring.

Electric incandescent lamp filament support

Tungsten-halogen lamp

A low wattage sub-miniature, tungsten-halogen lamp (10) having high efficacy and long life. The lamp (10) has a cylindrical envelope (12) in the T-1 to T-1 1/4 range containing a fill gas having a halogen minor constituent and an inert gas major constituent. The lamp (10) operates at high fill gas pressures, and lower halogen gas content.

Tubular incandescent lamp

Halogen lamp with reflector

ELECTRIC INCANDESCENCE LAMP

DANS LES LAMPES A INCANDESCENCE ELECTRIQUE PRESENTANT UN FILTRE 7 REFLECHISSANT LE RAYONNEMENT INFRAROUGE ET PERMEABLE A LA LUMIERE VISIBLE, LE RENDEMENT PEUT ETRE AUGMENTE PAR UNE ADAPTATION CONVENABLE DE LA GEOMETRIE DU FILTRE 7 A CELLE DU FILAMENT 4. CONFORMEMENT A L'INVENTION, UN FILAMENT CYLINDRIQUE 4 EST DISPOSE SYMETRIQUEMENT ET AXIALEMENT ENTRE LES FOYERS 2, 3 D'UN ELLIPSOIDE DE REVOLUTION 7, 1, LA DISTANCE ENTRE LES FOYERS 2, 3 ETANT EGALE A UNE A DEUXFOIS LA LONGUEUR DU FILAMENT 4. APPLICATION: ECLAIRAGE.

Multiple pinch incandescent lamp with alternate coiled and straight filament sections

ABSTRACT OF THE DISCLOSURE An incandescent lamp such as a tungsten filament lamp in which the filament is a series of alternate active coil sections and inactive straight sections. The surroun-ding glass envelope is correspondingly drawn down around the straight sections to reduce the volume of the envelope and to provide mechanical support for the filament.

ELECTRIC INCANDESCENT LAMP

Incandescent lamp that emits infrared light and a method of making the lamp

An incandescent lamp that emits infrared light and a method of making the lamp includes a filament assembly inside a polycrystalline aluminum oxide (PCA) envelope, where the filament assembly preferably has a coiled tungsten filament, solid metal ends of tungsten or molybdenum attached to the coiled tungsten filament, and leads at distal ends of the solid metal ends. End caps are attached to ends of the envelope and have openings through which a respective one of the leads extends, where the leads are each made of an electrically conductive material having a coefficient of thermal expansion compatible with the end caps, such as niobium. The leads are attached to the end caps with glass-ceramic sealing frits. The end caps and sealing frits seal a suitable gas inside the envelope.

CONCAVE REFLECTOR AND LAMP COMPRISING SUCH A REFLECTOR

A.REFLECTEUR CONCAVE ET LAMPE COMPRENANT UN TEL DEFLECTEUR. B.LE REFLECTEUR 11 CONCAVE COMPREND UN TRONCON 12 ANTERIEUR PARABOLIQUE SUIVI D'UN TRONCON 14 INTERMEDIAIRE CIRCULAIRE ET D'UN TRONCON 15 POSTERIEUR PARABOLIQUE. LES TROIS TRONCONS ONT LE MEME FOYER 13. C.INDUSTRIE DE L'ECLAIRAGE. A. CONCAVE REFLECTOR AND LAMP INCLUDING SUCH A DEFLECTOR. B. THE 11 CONCAVE REFLECTOR CONSISTS OF A 12 ANTERIOR PARABOLIC TRUNK FOLLOWED BY A 14 INTERMEDIATE CIRCULAR TRUNK AND A 15 BACK PARABOLIC TRUNCON. THE THREE TRUNKS HAVE THE SAME FIREPLACE 13. C. LIGHTING INDUSTRY.

Electric heating tube

936,280. Electric heating tubes. F. SCHROEDER-STRANZ. Dec. 11, 1959 [Dec. 13, 1958], No. 42119/59. Class 39 (3). An electric heating tube comprises an outer tubular envelope 3, Fig. 1, containing a coiled element 2, the wire of which is bent so as to have a plurality of projecting portions 1 spaced from one another and substantially engaging the inner surface of the envelope in order to maintain the element in a predetermined position therein. The preferred forms of the projections are shown in Figs. 2 and 3. The envelope may be of quartz or coloured glass, and a reflective coating may be provided on a portion thereof. The ends of the coil 2 are fused through an airtight seal in the ends of the tube 3 which is evacuated. The coil is formed by winding a tungsten wire round a core and at regular intervals utilizing a die to produce the projections. The wire is then annealed on the core to such a temperature that no deformation will subsequently occur.

Novel daylight lamp

Tungsten halogen lamps

1,222,790. Electric incandescent lamps. THORN LIGHTING Ltd. 17 Nov., 1969, No. 56206/69. Heading HIF. A tungsten halogen lamp comprises a tubular sealed envelope having a portion 15 of increased diameter and a planar filament 20 located within the said portion;

Incandescent lamp that emits infrared light and a method of making the lamp

An incandescent lamp that emits infrared light and a method of making the lamp includes a filament assembly inside a polycrystalline aluminum oxide (PCA) envelope, where the filament assembly preferably has a coiled tungsten filament, solid metal ends of tungsten or molybdenum attached to the coiled tungsten filament, and leads at distal ends of the solid metal ends. End caps are attached to ends of the envelope and have openings through which a respective one of the leads extends, where the leads are each made of an electrically conductive material having a coefficient of thermal expansion compatible with the end caps, such as niobium. The leads are attached to the end caps with glass-ceramic sealing frits. The end caps and sealing frits seal a suitable gas inside the envelope.

Halogen incandescent lamp

Eine Halogenglühlampe wird unter konvektionsfreien Bedingungen betrieben. Es lassen sich damit Lichtausbeuten von etwa 15-20 lm/w bei Lebensdauern von ca. 2000 Std. erzielen. Wichtige Parameter sind die Kolbenabmessungen, Leuchtkörperabmessungen und Füllgaseigenschaften.

Improvements to light bulbs for incandescent electric lamps

Incandescent lamp

1524582 Electric incandescent lamps XEROX CORP 25 June 1976 [3 July 1975] 26463/76 Heading H1F A lamp comprises a filament having a plurality of coil sections 6 and a plurality of straight sections 8, the glass envelope 10 being pinched around the straight sections to form a series of cavities 14 around the coil sections. The envelope may contain bromine or iodine.

Filament support for incandescent lamp

유리질 외피내의 코일형 필라멘트를 포함하는 백열 램프에서 필라멘트는 코일에 용접된 한쪽 단부와 유리비드에 의해 외피벽에 고정된 다른쪽 단부를 갖는 내화 금속지지 와이어에 의해서 코일의 길이를 따라 적어도 한 지점에서 지지된다. 이 지지구는 램프 작동중에 필라멘트의 처짐을 방지하며, 적외선은 반사하고 가시광선은 투과시키는 광간섭 코팅이 형성된 타원형 필라멘트 챔버를 갖는 2중 단부식 고강도 텅스텐 할로겐램프에 사용하기에 특히 적합하다. In incandescent lamps comprising coiled filaments in a glassy sheath, the filaments are at least one point along the length of the coil by a refractory metal support wire having one end welded to the coil and the other end fixed to the sheath wall by glass beads. Supported. This support prevents sagging of the filament during lamp operation and is particularly suitable for use in double-ended high-strength tungsten halogen lamps with elliptical filament chambers formed with an optical interference coating that reflects infrared light and transmits visible light.

Elongated incandescent lamp and process for making same

LIGHT EMITTING DEVICE

SUPPORT FOR FILAMENT OF INCANDESCENT LAMPS.

LA INVENCION SE REFIERE A UNA LAMPARA (54) INCANDESCENTE CONTENIENDO UN FILAMENTO (28) EN FORMA DE BOBINA DENTRO DE UNA ENVOLTURA DE VIDRIO, DONDE EL FILAMENTO ESTA SOPORTADO POR AL MENOS UN PUNTO A LO LARGO DE SU LONGITUD DE BOBINA MEDIANTE UN ALAMBRE (10) DE SOPORTE DE METAL REFRACTARIO. UNO DE CUYOS EXTREMOS ESTA SOLDADO A LA BOBINA (28) Y EL OTRO EXTREMO ESTA ASEGURADO A LA PARED DE LA ENVOLTURA MEDIANTE UN BOTON (24) DE VIDRIO. EL SOPORTE PREVIENE EL HUNDIMIENTO DEL FILAMENTO DURANTE EL PROCESO DE OPERACION DE LA LAMPARA Y ES ESPECIALMENTE UTILIZADO CON LAMPARAS HALOGENO-TUNGSTENO DE DOBLE TERMINAL DE ALTA INTENSIDAD DISPONIENDO DE UNA CAMARA DE FILAMENTO PERFILADO DE FORMA ELIPTICA CON UNA REFLEXION DE INFRARROJOS Y TRASMISION DE LUZ VISIBLE EN UN RECUBRIMIENTO DE INTERFERENCIA OPTICA SOBRE LA CAMARA. THE INVENTION REFERS TO AN INCANDESCENT LAMP (54) CONTAINING A COIL FILAMENT (28) INSIDE A GLASS WRAP, WHERE THE FILAMENT IS SUPPORTED BY AT LEAST ONE POINT ALONG ITS COIL LENGTH (THROUGH A WIRE) 10) OF REFRACTORY METAL SUPPORT. ONE OF WHOSE ENDS IS WELDED TO THE COIL (28) AND THE OTHER END IS SECURED TO THE WALL OF THE ENVELOPE THROUGH A BUTTON (24) OF GLASS. THE SUPPORT PREVENTS SINKING OF THE FILAMENT DURING THE OPERATION PROCESS OF THE LAMP AND IS ESPECIALLY USED WITH HALOGEN-TUNGSTEN LAMPS WITH HIGH INTENSITY DOUBLE TERMINALS, PROVIDING AN ELIPTICALLY PROFILED FILAMENT WITH AN ELIPTICALLY PROFILE IN A COATING OF OPTICAL INTERFERENCE ON THE CAMERA.

Incandescent lamp with reflective coating

A lamp (1) according to an embodiment includes a bulb (2), a filament (3), a gas (4), and a reflective film (5). The filament (3) is disposed in the interior (2a) of the bulb (2) along the tube axis. The gas (4) is filled in the interior (2a) of the bulb (2). The reflective film (5) is formed on the outer circumferential surface (2b) of the bulb (2) and reflects a light from the filament (3) toward the interior (2a) of the bulb (2). Further, the reflective film (5) is formed by depositing a reflective film material containing TiO 2 , SiO 2 , and BaSO 4 on the outer circumferential surface (2b) of the bulb (2).

Light bulb wire holder.

Incandescent lamp with infrared reflecting coating and with envelope made of several sections and method of manufacturing same

INCANDESCENT LAMP WITH INFRARED REFLECTING COATING AND WITH ENVELOPE MADE OF SEVERAL SECTIONS AND METHOD OF MANUFACTURING SAME Abstract An electric lamp whose envelope has at least two sections which are joined together in which the envelope preferably has a coating of a visible light transmissive and infrared reflective material thereon and in which the sections can be optically treated to accept and enhance the effectiveness of the coating. A method is also disclosed for making lamps using the multi-section envelope in which the envelope sections are hermetically sealed together after the envelope is exhausted or sealed in an environment the same as that to be contained within the envelope. - - - - - - - - -

ELECTRIC LIGHT BULB.

Incandescent electric lamp