基本信息:
- 专利标题： LIGHT EMITTING DEVICE
- 申请号：EP15180963.9 申请日：2015-08-13
- 公开(公告)号：EP2988380B1 公开(公告)日：2017-10-18
- 发明人： TOKUDA, Yoshikatsu , GOTO, Yoshiaki
- 申请人： Kabushiki Kaisha TOPCON,
- 申请人地址： 75-1, Hasunuma-cho, Itabashi-ku, Tokyo 174-8580 JP
- 专利权人： Kabushiki Kaisha TOPCON,
- 当前专利权人： KABUSHIKI KAISHA TOPCON,
- 当前专利权人地址： KABUSHIKI KAISHA TOPCON,
- 代理机构： Eisenführ Speiser
- 优先权： JP2014169427 20140822
- 主分类号： H01S5/042
- IPC分类号： H01S5/042 ; H01S5/062 ; G01S17/10
摘要：
Light with a short pulse width is emitted using a simple structure. A light source 101, a differentiation circuit 102, and a switch 103 are connected in series. When the switch 103 is switched on, inrush current flows in a capacitor 102b forming the differentiation circuit 102, and accordingly the light source 101 is supplied with electric current and thereby emits light. When the capacitor 102b is charged, electric current flows in a resistor 102a, and voltage drops at the resistor 102a. Then, the voltage applied to the light source 101 is decreased, whereby the light source 101 stops emitting light. By using the inrush current at the capacitor 102b, light with a short pulse width can be generated.
公开/授权文献:
- EP2988380A3 LIGHT EMITTING DEVICE 公开/授权日：2016-03-09