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Brightening module and light source device

A light source device and polarized light technology, which can be used in electric light sources, lighting devices, fixed lighting devices, etc., and can solve problems such as reducing the efficiency of light use

Inactive Publication Date: 2011-08-31
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The brightness enhancement sheet 320 used in this structure generally has a rhombic structure. However, although the use of the rhombic structure can concentrate the light and narrow the angle, it is easy to cause total reflection of the light with a small angle and reduce the light intensity. efficiency of use

Method used

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  • Brightening module and light source device
  • Brightening module and light source device
  • Brightening module and light source device

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Embodiment Construction

[0147] The technical means and effects used by the present invention to achieve the purpose will be described below with reference to the accompanying drawings, and the embodiments listed below in conjunction with the accompanying drawings are only for auxiliary illustration, and the technical means of this case are not limited thereto.

[0148] See Figure 4A , the rhombic structure has good light-gathering characteristics in optical effects (reducing the divergence angle of the divergent light source); according to Snell's Law (Snell's Law), when the incident light 432 enters the prism 430, if the angle θ is greater than the critical angle of total reflection , then the incident light 432 will be totally reflected in the prism 430 ( Figure 4A Middle dotted arrow), if the angle θ is less than the critical angle of total reflection, then the incident light 432 after exiting the prism 430 ( Figure 4A The solid arrow in the middle) will deviate from the normal again ( Figur...

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Abstract

The invention relates to a brightening module comprising a microstructural optical modulation component and a polarization component, wherein the microstructural optical modulation component is provided with a first optical surface and a second optical surface capable of receiving incident light; the polarization component is arranged at a position corresponding to the second optical surface pairwise; the microstructural optical modulation component also comprises a diffusion part and a light collecting part; the diffusion part is made from transparent materials, can be used for diffusing the incident light, and is formed above the first optical surface; and the light collecting part is made from the transparent materials, can be used for collecting the incident light, and is formed above the diffusion part.

Description

[0001] This case is a divisional application, the application number of its parent case: 200510103143.6, the application date: September 16, 2005, the applicant: Industrial Technology Research Institute, the name of the invention: brightening module and light source device. technical field [0002] The invention relates to a brightness enhancement module and a light source device, in particular to a brightness enhancement module which can arrange a diffusion component and a light collection component in the same film layer and can strengthen polarized light, and a light source device using the brightness enhancement module. Background technique [0003] At present, in the backlight module of the display device, the combination of the brightness enhancement film (rhombic lens) (BEF) and the reflective polarizer (DBEF or CBEF) optical film is mainly used to achieve the purpose of light concentration. The rhombic structure has an optical effect. Good light-gathering characterist...

Claims

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Application Information

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IPC IPC(8): G02B6/00G02B5/04G02B5/02G02B5/30F21S8/00F21V13/00
Inventor 姚柏宏潘奕凯林本胜傅春能黄珩春
Owner IND TECH RES INST