发明名称 |
Automatic focusing adjustment device |
摘要 |
In the disclosed device, a beam splitting member splits the light reflected from an object to be photographed into two parts. One part of the split-off light is reflected back through the beam splitting member to a photoelectric transducer. An output signal from the photoelectric transducer is used for focusing adjustment.
|
申请公布号 |
US4643556(A) |
申请公布日期 |
1987.02.17 |
申请号 |
US19850739382 |
申请日期 |
1985.05.30 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
FUJIWARA, AKIHIRO;TANAKA, KAZUO |
分类号 |
G02B7/28;(IPC1-7):G03B3/00;H04N5/238 |
主分类号 |
G02B7/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|