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Lens and light source module using the lens

A lens and light incident surface technology, applied in the field of optics, can solve problems such as unfavorable backlight illumination, unable to completely eliminate the central bright spot, etc., to achieve the effect of expanding the light output angle, avoiding yellowing or brightening, and reducing the positive light intensity

Inactive Publication Date: 2018-04-17
SCIENBIZIP CONSULTINGSHENZHENCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual use, after the light emitted by the light source is diffused by the lens, because the light is relatively concentrated near the optical axis of the light source, sometimes the phenomenon of the central bright spot cannot be completely eliminated, which is not conducive to backlighting.

Method used

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  • Lens and light source module using the lens
  • Lens and light source module using the lens
  • Lens and light source module using the lens

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Embodiment Construction

[0015] see Figure 1 to Figure 3 A light source module 100 provided by an embodiment of the present invention includes a light source 10 and a lens 20 disposed on the light source 10 . The lens 20 includes a light incident surface 21 opposite to the light source 10 , a light exit surface 22 opposite to the light incident surface 21 , and a connecting surface 23 connecting the light incident surface 21 and the light exit surface 22 . The light source 10 has an optical axis O. The light emitted by the light source 10 is roughly distributed within a spatial angle of 180 degrees relative to the optical axis O, and most of the light is concentrated and distributed within a spatial angle of 120 degrees relative to the optical axis O.

[0016] In this embodiment, the light source 10 is a light emitting diode, including a base 12 and a light emitting diode chip 14 fixed on the base 12 . The base 12 is made of insulating materials such as epoxy resin, silica gel or ceramics. The lig...

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Abstract

The invention discloses a light source module. The light source module comprises a light source, and a lens aligned to the light source, wherein the lens comprises a light inlet surface aligned to the light source, a light outlet surface opposite to the light inlet surface, and a connecting surface for connecting the light inlet surface with the light outlet surface; the connecting surface is an annular plane surrounding the light inlet surface; the light outlet surface comprises a top wall surface positioned above the light inlet surface, and a side wall surface upwards extending from the outer periphery of the connecting surface and butted against the outer periphery of the top wall surface; the light inlet surface is formed by recessing the middle of the bottom surface of the lens to the internal of the lens; the top wall surface comprises a central surface, and a surrounding surface surrounding the central surface and connected to the outer periphery of the central surface; and the central surface is formed by recessing the middle of the top surface of the lens to the internal of the lens. Compared with the prior art, the light source module realizes optical effects of reducing the frontal light intensity, reinforcing the lateral light intensity and increasing the light outlet angle.

Description

technical field [0001] The invention relates to the field of optics, in particular to a lens and a light source module using the lens. Background technique [0002] At present, in backlighting, in order to uniform the light, it is usually used with a diffuser lens, so that the light emitted by the light source can exit at a larger angle, so as to achieve the effect of lighting a large area. [0003] However, in actual use, after the light emitted by the light source is diffused by the lens, because the light is relatively concentrated near the optical axis of the light source, sometimes the phenomenon of the central bright spot cannot be completely eliminated, which is not conducive to backlighting. Contents of the invention [0004] In view of this, it is necessary to provide a lens capable of improving the directivity of light emitted by a light source and a light source module using the lens. [0005] A lens, comprising a light incident surface, a light exit surface op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04
CPCF21V5/045F21V5/046F21V19/001
Inventor 戴丰源胡朝景王何立颖
Owner SCIENBIZIP CONSULTINGSHENZHENCO