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1. 发明申请

US20070131847A1 Optical detector 审中-公开
标题翻译：光学探测器
公开(公告)号：US20070131847A1
公开(公告)日：2007-06-14
申请号：US10581904
申请日：2005-10-21
申请人： Jianguo Yao , David Spokes , Alistair Frier , Steven Borley
发明人： Jianguo Yao , David Spokes , Alistair Frier , Steven Borley
IPC分类号： H01J40/14 , G01J1/44 , H03F3/08
CPC分类号： H04B10/07 , G01J1/44 , H03F3/08 , H04B10/674
摘要： An optical detector including an avalanche photodiode (APD) and protection circuitry for protecting the APD from excessive power dissipation therewithin, wherein the protection circuitry includes a switching element connected in parallel with the APD, which switching element is switched from a high resistance state to a low resistance state if the level of current through the APD exceeds a predetermined level, and wherein switching back of the switching element to the high resistance state is dependent on a reset signal from a controller. An optical detector including an avalanche photodiode (APD), and protection circuitry for protecting the APD from excessive power dissipation therewithin by switching the APD to a relatively low voltage power supply if the level of current through the APD exceeds a predetermined level, and wherein switching back of the APD to a higher voltage power supply is dependent on a reset signal from a controller.
摘要翻译：一种光学检测器，包括雪崩光电二极管（APD）和保护电路，用于保护APD免于其中的功率耗散，其中保护电路包括与APD并联连接的开关元件，该开关元件从高电阻状态切换到如果通过APD的电流的电平超过预定电平，并且其中将开关元件切换回高电阻状态的低电阻状态取决于来自控制器的复位信号。一种包括雪崩光电二极管（APD）的光检测器，以及用于通过如果通过APD的电流水平超过预定电平将APD切换到相对低电压电源，则保护APD免受过度功率耗散的保护电路，并且其中切换 APD的背面到更高的电压电源取决于来自控制器的复位信号。

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