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	Automatic ranging optical power monitoring system
	ARRINGTON, LEE O.; BURAK, CHRIS J.
	1997-03-11
著作权人	EASTMAN KODAK COMPANY
专利号	US5610709
国家	美国
文献子类	授权发明
其他题名	Automatic ranging optical power monitoring system
英文摘要	A high speed, automatic calibration system of laser (or other light source) sensitometers capable of a wide range of power measurements, of densitometers and of other optical power measuring systems, and particularly to an automatic gain scaling circuit for use in the same. The system measures optical power incident on a photodiode detector in the course of calibrating or using a sensitometer and automatically and rapidly selects the appropriate gain for the operational amplifier. An automatic gain scaling function performed in gain scale logic rapidly selects the proper gain of a transimpedance operation amplifier operating as a current to voltage converter and delivers an analog voltage signal within a range between an upper limit and a lower limit. An over range error signal is generated in response to an upper out of limit signal generated at the minimum gain set by said gain scale logic. A low resolution error signal is generated in response to a lower out of limit signal generated at the maximum gain set by the gain scale logic.
公开日期	1997-03-11
申请日期	1996-02-02
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/34448]
专题	半导体激光器专利数据库
作者单位	EASTMAN KODAK COMPANY
推荐引用方式 GB/T 7714	ARRINGTON, LEE O.,BURAK, CHRIS J.. Automatic ranging optical power monitoring system. US5610709. 1997-03-11.

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