led polarized light and its light distribution lens
A technology of light distribution lens and optical axis, applied in the field of lighting, can solve problems such as difficulty in achieving light distribution effect, light deflection of LED light source, etc.
Active Publication Date: 2016-12-28
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 includes a bottom surface and a top surface. Wherein, the center of the bottom surface is sunken inward to form a groove. The groove is a rotationally symmetrical structure, the side wall of the groove is an incident surface, and the ratio of depth to width of the groove is greater than 2. The light emitted by the LED chip can be incident from the incident surface. According to the principle of refraction, light will be deflected to both sides after passing through the incident surface. Moreover, since the depth-to-width ratio of the groove is greater than 2, the incidence plane is "steeper". Therefore, after the light passes through the incident surface, the deflection angle is relatively large. After the light passes through the incident surface, it emerges from the top surface. When the light is emitted from the optically denser medium to the optically rarer medium, the outgoing angle will be greater than the incident angle, so that the light is further deflected to both sides. After two deflections, the light emitted by the LED chip will reach a preset deflection angle. In addition, the invention also provides an LED deflector 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 chips and packaging technology, the brightness of LED light sources is sufficient to meet the needs of various lighting fields, and 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. Ho...
Claims
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IPC IPC(8): F21S8/00F21V5/04F21V19/00F21W111/06F21Y115/10
Inventor 周明杰乃业利
Owner OCEANKING DONGGUAN LIGHTING TECH