基本信息:
- 专利标题： 具有耐热入射部的光导
- 专利标题（英）：Light guide with heat-resistant incident portion
- 申请号：CN201810554904.7 申请日：2018-06-01
- 公开(公告)号：CN109031504A 公开(公告)日：2018-12-18
- 发明人： 石川友朗 , 池谷雅弘 , 大多和克明 , 小林正幸 , 安间英任 , 堤康章
- 申请人： 株式会社小糸制作所
- 申请人地址： 日本东京
- 专利权人： 株式会社小糸制作所
- 当前专利权人： 株式会社小糸制作所
- 当前专利权人地址： 日本东京
- 代理机构： 北京天昊联合知识产权代理有限公司
- 代理人： 何立波; 张天舒
- 优先权： 2017-113964 20170609 JP
- 主分类号： G02B6/00
- IPC分类号： G02B6/00 ; F21V8/00 ; F21W107/10
The present invention protects the incident portion of the light guide body from the heat generation of the semiconductor light source without lowering the light distribution efficiency. Light guide (11) of the vehicular lamp has a light guide (12) that guides light generated by the semiconductor light source (3). The light guide body (12) includes an incident portion (13) that injects light fromthe semiconductor light source (3), and a protection portion (16) that protects the incident portion (13) in order not to be affected by heat impact of the semiconductor light source (3). The incidentportion (13) is molded from a first transparent material, and the protective portion (16) is molded from a second transparent material having a softening point higher than that of the first transparent material. Acrylic or polycarbonate resin is used for the first transparent material, and glass is used for the second transparent material. Alternatively, an acrylic resin is used for the first transparent material, and a polycarbonate resin is used for the second transparent material.
公开/授权文献:
- CN109031504B 具有耐热入射部的光导 公开/授权日：2021-08-31
IPC结构图谱:
| G | 物理 |
| --G02 | 光学 |
| ----G02B | 光学元件、系统或仪器 |
| ------G02B6/00 | 光导；包含光导和其他光学元件（如耦合器）的装置的结构零部件 |