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High-precision free-form surface lens based on light-emitting diode light distribution curve

A technology of light emitting diodes and curved lenses, applied in optics, nonlinear optics, components of lighting devices, etc., can solve the problems of small distance between LCD screen and LED light source, difficult to design light modulation of a single lens, etc., to improve backlight brightness, The effect of improving the utilization rate of light energy and improving the non-uniformity

Inactive Publication Date: 2019-06-04
成都中源红科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, in the traditional direct-lit LED backlight, due to the size limitation, the distance between the LCD screen and the LED light source is small, and the multi-LED array is difficult to be regarded as a single light source, and it is difficult to design a single lens for light modulation

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  • High-precision free-form surface lens based on light-emitting diode light distribution curve
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  • High-precision free-form surface lens based on light-emitting diode light distribution curve

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Embodiment Construction

[0014] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0015] The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0016] Such as figure 1 As shown, the present invention provides a high-precision free-form surface lens based on the light distribution curve of a light-emitting diode, including: a light-emitting diode 1 and a plurality of double free-form surface lenses 2 with different radii; the double free-form surface lens 2 becomes a rectangular lens after cutting It can also form a rectangul...

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Abstract

The invention relates to a high-precision free-form surface lens based on a light-emitting diode light distribution curve. The high-precision free-form surface lens comprises a light-emitting diode and a plurality of double-free-form surface lenses with different radiuses; the double-free-form surface lenses are cut into rectangular lens and can form rectangular light spots and are spliced into alens array by using a rectangular lens; the matrix backlight surface is 10 mm x 13. 4 mm, the matrix is a 2 x 2 matrix, the size of the single rectangular lens is 5.05 mm x 6.7mm. Compared with a traditional backlight structure adopting a two-layer diffusion film, the light energy utilization rate of the backlight after the lens array and the two layers of diffusion films are adopted is improved,the backlight brightness is improved and the heterogeneity is improved, the half-brightness visual angle is reduced from 37 degrees to 19 degrees; the lens and the array provided are used for collimating light rays emitted by the LED light sources, so that a uniform rectangular light spot with high brightness is easily formed, and the use requirement of the head is met.

Description

technical field [0001] The invention relates to the technical field of high-precision lenses, in particular to a high-precision free-form surface lens based on light distribution curves of light-emitting diodes. Background technique [0002] With the development and maturity of liquid crystal display (Liquid Crystal Display, LCD) technology, LCD has replaced cathode ray tube as a mainstream display device. Light Emitting Diode (LED) has the advantages of fast response speed, low starting voltage, low power consumption, mercury-free environmental protection, long life, etc., and is widely used in liquid crystal display backlight. [0003] Compared with traditional imaging optics, non-imaging optics focuses not on the plane imaging and imaging quality of the target, but on the energy utilization and energy distribution of the light source. Most of the existing free-form surface lenses can obtain a uniform light spot of a specific shape in the case of long distance and large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04G02F1/1335
Inventor 韩崇利
Owner 成都中源红科技有限公司
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