发明名称 |
Automatic focus adjusting device |
摘要 |
An improved automatic focusing system for an optical instrument includes a scanner driven oscillatably across an angle to detect a subject positioned between infinity and the minimum focus condition of the objective lens of the optical instrument. The scanner is adjusted in response to the focus condition of the lens to align the bisector of the angle scanned with the subject when the lens is in perfect focus by electronic and mechanical interconnecting feedback means between the objective lens focusing ring and the scanning system.
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申请公布号 |
US4303320(A) |
申请公布日期 |
1981.12.01 |
申请号 |
US19790057069 |
申请日期 |
1979.07.12 |
申请人 |
OSAWA PRECISION INDUSTRIES, LTD. |
发明人 |
ISONO, TADAO |
分类号 |
G03B13/36;G02B7/30;(IPC1-7):G03B13/18;G03B3/10;G01J1/44 |
主分类号 |
G03B13/36 |
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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