Title:
LIGHT CONDENSATION AND LIGHT UNIFORMIZATION IMAGING OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/019656
Kind Code:
A1
Abstract:
A light condensation and light uniformization imaging optical system comprises an LED light source (1), a light condensation and light uniformization portion and an imaging portion, wherein the light condensation and light uniformization portion comprises a first lens (2) and a second lens (3) in sequence in a light path direction; the first lens comprises a bottom face, a surface and a side face located between the bottom face and the surface, the bottom face is provided with a cavity (25) recessed inwards to the first lens and used for accommodating an LED lamp bead (14), the top of the cavity is provided with an arc-shaped protrusion (26), a surface of the cavity forms a light ray incident face (21); the side face is composed of one or more sections of curved surfaces (21a) fully reflecting out light rays in -4 to 5 degrees of light-emitting directions, the curved surface forms a light ray reflective face (22); and the surface is provided with a micro bead face group (27), the micro bead face group consists of several small curved surfaces (271), and the micro bead face group forms a light ray emitting face (23). In the optical system, light condensation, mixture and uniformization are firstly performed on light rays passing through the light condensation and light uniformization portion, so that finally imaged light spots have more uniform illumination intensity and colour in a relatively short distance.
Inventors:
CHEN ZHIMAN (CN)
Application Number:
PCT/CN2014/092197
Publication Date:
February 11, 2016
Filing Date:
November 25, 2014
Export Citation:
Assignee:
GUANGZHOU YAJIANG PHOTOELECTRIC EQUIPMENT CO LTD (CN)
International Classes:
F21V5/04
Foreign References:
| CN202955630U | 2013-05-29 | |||
| CN202274429U | 2012-06-13 | |||
| CN103542370A | 2014-01-29 | |||
| CN202382065U | 2012-08-15 |
Attorney, Agent or Firm:
GUANGZHOU ZHONGJUNXIONGJIE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
广州中浚雄杰知识产权代理有限责任公司 (CN)
广州中浚雄杰知识产权代理有限责任公司 (CN)
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