发明名称 |
FEEDBACK CONTROLLED PHOTOSENSITIVE OBJECT DETECTING SYSTEM |
摘要 |
A system for detecting the presence of an object passing between a photosensitive resistance and a light source. A DC feedback amplifier connected to the photosensitive resistance controls the intensity of the light source so that the system functions properly under wide variations in ambient conditions without requiring operator adjustments.
|
申请公布号 |
US3639768(A) |
申请公布日期 |
1972.02.01 |
申请号 |
USD3639768 |
申请日期 |
1968.10.09 |
申请人 |
CORNING GLASS WORKS |
发明人 |
RONALD A. MANCINI |
分类号 |
G01J1/30;G08B13/183;H03F3/08;(IPC1-7):G01J1/32;G01J1/36;H05B37/02 |
主分类号 |
G01J1/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|