发明名称 |
EXPOSURE MEASURING DEVICE |
摘要 |
Exposure measuring device having means for compensating the variation of power source voltage. A feedback means is incorporated in the exposure measuring device so that upon switching the switches to the contacts for the compensation of the variation of the voltage of the power source, the compensation of the voltage is automatically affected and the proper exposure measuring is performed.
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申请公布号 |
US3671769(A) |
申请公布日期 |
1972.06.20 |
申请号 |
USD3671769 |
申请日期 |
1970.01.06 |
申请人 |
NIPPON KOGAKU KK. |
发明人 |
TOSHIO TOMOMITSU;TATSUO FUJII |
分类号 |
G01J1/44;G03B17/20;(IPC1-7):G01J1/00 |
主分类号 |
G01J1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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