LIGHT-EMITTING DIODE HAVING A WAVELENGTH CONVERSION MATERIAL LAYER, AND METHOD FOR FABRICATING SAME

Provided is a light-emitting diode having a wavelength conversion material and a method for fabricating the same. The light-emitting diode comprises: a base structure; a light-emitting diode chip arranged on the base structure; and a wavelength conversion material layer arranged on the light-emitting diode chip, such that the area adjacent the upper surface of the light-emitting diode chip is thicker than the area adjacent to the side surface of the light-emitting diode chip. In addition, the method for fabricating a light-emitting diode comprises: a step of arranging the light-emitting diode chip on the base structure; and a step of arranging a wavelength conversion material layer containing a light-transmitting photocurable material on the light-emitting diode chip, such that the area thereof adjacent to the upper surface of the light-emitting diode chip is thicker than the area thereof adjacent to the side surface of the light-emitting diode chip. 1. A light-emitting diode comprising:a base structure;a light-emitting diode chip disposed on the base structure; anda wavelength conversion material layer formed on the light-emitting diode chip such that the area adjacent to the upper surface of the light-emitting diode chip is thicker than the area adjacent to the side of the light-emitting diode chip.2. The light-emitting diode of claim 1 , wherein the wavelength conversion material layer has a thickness profile proportional to the amount of light emitted from the light-emitting diode chip.3. The light-emitting diode of claim 2 , wherein the wavelength conversion material layer comprises a light-transmitting photocurable material and a wavelength conversion material.4. The light-emitting diode of claim 3 , wherein the light-transmitting photocurable material comprises one selected from the group consisting of silicone resin claim 3 , epoxy resin claim 3 , acrylic resin claim 3 , urethane resin claim 3 , photoresist claim 3 , and glass.5. The light-emitting diode of ...

ASYMMETRIC TYPE LENS AND STREET LAMP INCLUDING THE SAME

A lens is provided in an asymmetric shape including at least two curved surfaces with different light distribution angles. Therefore, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased while reducing dazzle. When a lighting apparatus including the lens is used as a street light, light directly incident to a driver is minimized, thereby reducing dazzle to the driver. During a night drive, brightness at a far forward position of the driver may be increased. In addition, light emitted toward a street may be increased while reducing light emitted toward a sidewalk. As a result, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased. Also, light pollution may be reduced. 1. A lens comprising at least two curved surfaces to transmit light generated from a light emitting diode (LED) , wherein light distribution angles of light passing through the at least two curved surfaces are different.2. The lens of claim 1 , wherein the at least two curved surfaces are asymmetric.3. The lens of claim 1 , wherein the at least two curved surfaces are defined by border lines and have different curvatures with reference to the border lines.4. The lens of claim 3 , wherein the border lines comprise:a first border line extending in a width direction of the lens; anda second border line extending in a length direction of the lens.5. The lens of claim 4 , whereinthe at least two curved surfaces are divided into a first region and a second region with respect to the first border line,light passing through the first region advances to one side with respect to the first border line, andlight passing through the second region advances to the other side with respect to the first border line.6. The lens of claim 4 , whereinthe at least two curved surfaces are divided into a third region and a fourth region with respect to the second border line,light passing through the third region advances to one side with respect to the second ...

LIGHT EMITTING APPARATUS

There is provided a light emitting apparatus including: at least one pair of lead frames; a light emitting device electrically connected to the lead frames to emit ultraviolet rays; a body including a side wall surrounding the light emitting device, and a groove portion formed in an upper surface of the side wall to receive an adhesive; and a lens part disposed above the light emitting device and fixed to the upper surface of the side wall of the body by the adhesive. 1. A light emitting apparatrus comprising:at least one pair of lead frames;a light emitting device electrically connected to the lead frames to emit ultraviolet rays;a body including a side wall surrounding the light emitting device, and a groove portion formed in an upper surface of the side wall to receive an adhesive; anda lens part disposed above the light emitting device and fixed to the upper surface of the side wall of the body by the adhesive.2. The light emitting apparatus of claim 1 , further comprising:an ultraviolet light reflecting part formed on a bottom surface of the lens part.3. The light emitting apparatus of claim 2 , wherein the lens part is disposed to allow the ultraviolet light reflecting part to cover the groove portion.4. The light emitting apparatus of claim 2 , wherein the ultraviolet light reflecting part includes at least one of silver (Ag) claim 2 , nickel (Ni) claim 2 , aluminum (Al) claim 2 , rhodium (Rh) claim 2 , palladium (Pd) claim 2 , iridium (Ir) claim 2 , magnesium (Mg) claim 2 , zinc (Zn) claim 2 , platinum (Pt) claim 2 , and gold (Au).5. The light emitting apparatus of claim 1 , wherein the groove portion is formed in the upper surface of the side wall as a ring.6. The light emitting apparatus of claim 1 , wherein the groove portion is provided in plural.7. The light emitting apparatus of claim 1 , wherein the body has a concave portion surrounded by the side wall to expose at least a portion of the lead frames on a bottom surface thereof claim 1 , andthe lens ...

Led lighthouse beacon

Led lighthouse beacon

Asymmetric type lens and street lamp including the same

A lens is provided in an asymmetric shape including at least two curved surfaces with different light distribution angles. Therefore, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased while reducing dazzle. When a lighting apparatus including the lens is used as a street light, light directly incident to a driver is minimized, thereby reducing dazzle to the driver. During a night drive, brightness at a far forward position of the driver may be increased. In addition, light emitted toward a street may be increased while reducing light emitted toward a sidewalk. As a result, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased. Also, light pollution may be reduced.