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Light-emitting diode (LED) lens

A technology of LED lens and lens, applied in the field of LED optical lens, can solve the problems of uneven chromaticity distribution, uneven brightness, etc.

Inactive Publication Date: 2013-07-24
SHENZHEN EASTFIELD LIGHTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As mentioned above, the LED light beam in the prior art is relatively concentrated so that it is easy to cause uneven brightness in the application of direct-type LED backlight and direct-type LED flat light, and uneven chromaticity distribution is easy to occur after the LED passes through the optical lens. problem, the present invention provides a new type of LED lens

Method used

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  • Light-emitting diode (LED) lens
  • Light-emitting diode (LED) lens
  • Light-emitting diode (LED) lens

Examples

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Embodiment 1

[0035] Example 1: Please see attached figure 1 , figure 2 and image 3 A preferred embodiment of the LED lens of the present invention is integrally molded from a light-transmitting material. In this embodiment, the LED lens includes a light-transmitting material body 1, and the body 1 is provided with a light-emitting portion 11 and a light-receiving concave portion 12. . In this embodiment, the light exit portion 11 is rotationally symmetrical in a non-spherical shape with a concave center and a convex main body. In this embodiment, the axial section of the light exit portion 11 is arc-shaped from the middle to the outside, and the light exit portion 11 is formed by rotating it. The light exit part 11 is formed above the body 1 and has a light exit surface 111 that is a free-form surface. The light exit surface 111 is composed of two parts: an inwardly concave middle part 112 and an outwardly convex main part 113, and the two parts have a smooth connection. That is, the ...

Embodiment 2

[0037] Embodiment 2: see Image 6 , Figure 7 , Figure 8 and Figure 9, The LED lens of this embodiment also includes a light-transmitting material body 1 , and the body 1 is provided with a light exit portion 11 and a light entry concave portion 12 . Similar to Embodiment 1, the light exit portion 11 of this embodiment is formed on one side of the body 1 and has a light exit surface 111 that is a free-form surface. The light exit surface 111 consists of an inwardly concave middle portion 112 and an outwardly convex The main body part 113 is composed of two parts, and the two parts are connected smoothly. In this embodiment, the axial section of the light exit part 11 is distributed in an arc from the middle to the outside, and is rotated to form the light exit part 11 . The light-incoming recess 12 is formed on the side of the body opposite to the light-outgoing part to accommodate the LED light source, and the size of the light-incoming part 12 can be changed according t...

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Abstract

The invention discloses a light-emitting diode (LED) lens, the lens comprises a body made of transparent material, one side of the body is an emergent light part, and the other side of the body is an incidence light concave part. Through the structure design of an incidence light surface and an emergent light surface and selection of optical material, an LED light source has light intensity distribution suitable for backlights and flat lamps.

Description

technical field [0001] The invention discloses an optical device, in particular to an LED optical lens. Background technique [0002] Due to the advantages of high luminous efficiency, long service life, energy saving and environmental protection, LED has gradually replaced traditional incandescent lamps, tungsten halogen lamps, fluorescent tubes and cold cathode fluorescent lamps in recent years, and has been increasingly used in the lighting field and liquid crystal display backlight. Wide range of applications. [0003] In the field of lighting, LED lighting is currently widely used in projection lamps, floodlights, bulb lamps, lamp tubes and ceiling lamps. For LED ceiling lights, there are currently two main technical solutions: one is to use power-type side-light LEDs with diffuse reflection and light diffusion plates, and the other is to use direct-down densely arranged low-power LEDs with light diffusion plates. The advantage of the former is that the number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21Y101/02F21Y115/10
Inventor 郑代顺陈君陆群
Owner SHENZHEN EASTFIELD LIGHTING