发明名称 |
Lens information introducing device having corrected extraneous light |
摘要 |
A lens information introducing device in a camera comprises a photoelectrically legible digital code pattern provided on a lens, optical means for introducing the code pattern into a camera body and imaging the same at a predetermined position, photoelectric converter means disposed at the predetermined position for photoelectrically converting the image of the code pattern formed by the optical means, and shaping means for comparing the photoelectrically converted signal by the photoelectric converter means with a standard signal and generating the lens information indicated by the code pattern as a digital signal.
|
申请公布号 |
US4236804(A) |
申请公布日期 |
1980.12.02 |
申请号 |
US19790059037 |
申请日期 |
1979.07.19 |
申请人 |
NIPPON KOGAKU K.K. |
发明人 |
TOYODA, KENJI;SHIMOMURA, JUN |
分类号 |
G03B7/093;G03B17/20;(IPC1-7):G03B7/09;G03B17/00;G03B17/18 |
主分类号 |
G03B7/093 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|