LED deflection lamp and light distribution lens thereof
A light distribution lens and optical axis technology, applied in the field of lighting, can solve problems such as difficulty in achieving light distribution effects, deflection of light from LED light sources, etc.
Active Publication Date: 2014-12-17
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
However, LED light sources are different from omnidirectional traditional light sources such as incandescent lamps and metal halide lamps. The structure of LED light sources determines the diversity of light emission due to the structure of their chip packages, and it is difficult to achieve the preset light distribution effect only through reflection.
Therefore, it is difficult to deflect the light emitted by the LED light source through the traditional secondary optical design
Method used
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[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0025] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...
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A light distribution lens comprises a bottom face and a top face, wherein the center of the bottom face is concave inwards so that a groove can be formed, the groove is of a rotational symmetric structure, the side wall of the groove is an incident plane, and the ratio of the depth to the width of the groove is greater than 2. Light emitted by an LED chip can achieve incidence from the incident plane. According to the refraction principle, light will deflect towards the two sides after passing through the incidence plane, and due to the fact that the ratio of the depth to the width of the groove is greater than 2, the incident plane is steep, and the deflection angle is large after light passes through the incident plane. Light is emitted out from the top face after passing through the incident plane; due to the fact that when light is emitted to an optically thinner medium from an optically denser medium, the angle of emergence is greater than the angle of incidence, light further deflects towards the two sides; light emitted by the LED chip will achieve a preset deflection angle after deflecting twice. The invention further provides an LED deflection lamp.
Description
technical field [0001] The invention relates to lighting technology, in particular to an LED polarizing lamp and a light distribution lens thereof. Background technique [0002] LED light source has the remarkable characteristics of energy saving, environmental protection, safety, high color rendering index, long life, small size, high luminous efficiency, and low energy consumption. With the maturity of LED chip and packaging technology, the brightness of LED light source is enough to meet the needs of various lighting fields, LED lighting has become a trend [0003] In some application fields, such as airport runway lights and touchdown area lights, it is required that the lamps have a certain deflection angle. Therefore, secondary optical design is required when LED light sources are used in the above fields. The current secondary light distribution generally uses devices such as reflector cups and reflectors to distribute light in the form of reflection. However, LED ...
Claims
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IPC IPC(8): F21W111/06F21S8/00F21V19/00F21V5/04F21Y101/02
Inventor 周明杰乃业利
Owner OCEANKING DONGGUAN LIGHTING TECH