High power LED lamp holder for light distribution of freeform lens

A technology of LED street lamps and LED bases, which is applied to semiconductor devices, light sources, point light sources, etc. of light-emitting elements, can solve the problems of inflexible light distribution and low efficiency, and achieves improved light-light conversion efficiency, production efficiency, energy saving effect
CN101539267BActive Publication Date: 2012-11-21THE HONG KONG POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
THE HONG KONG POLYTECHNIC UNIV
Publication Date
2012-11-21

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Abstract

The invention provides a freeform lens, which comprises a body (1) with a substantially bowl-shaped structure formed by a transparent material; the bottom of the body sinks inwards to form a light source area (2) which can accommodate an LED; the surface, surrounding the light source area (2), of the body (1) is a refracting surface (3); the periphery of the body (1) is a full reflecting surface (4) capable of reflecting light; the upper part of the body is a light exit surface (5); and after a light source emitted by the light source area (2) passes through the refracting surface (3) and enters the body (1), light directly passes through light exit surface (5) and / or the light is reflected by the full reflecting surface (4) to enter the body again and pass through the emergent surface (5). The invention also provides a high power LED lamp holder for the freeform light distribution of the freeform lens. The LED lamp holder can be used by a designer for flexible and high-efficiency light distribution on difference use occasions.
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Description

technical field

[0001] The invention relates to a lamp holder of a high-power LED street lamp with light distribution by a free-form surface lens. Background technique

[0002] With the rapid development of light-emitting diode (referred to as LED) technology, the application of LED in the lighting field has increasingly attracted the attention of the semiconductor industry and the lighting industry. Foreign LED application products have developed rapidly in recent years, and the main application fields include mobile phone backlight, display screen, automotive lighting, architectural decoration lighting, signal lighting, etc. High-power LEDs have been widely used in automotive lighting, and automotive lighting accounts for about 18% of the LED market. Signal lighting is a field where LED monochromatic light is widely used and relatively early, accounting for about 4% of the LED application market. LED lighting has the characteristics of low power consumption and long life...

Claims

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