| 发明名称 |
CONTROL METHOD FOR LIGHT AMOUNT OF LENS |
| 摘要 |
PURPOSE:To enhance the efficiency of a lens aperture in order to obtain the intensity of illumination which is nearly uniform in connection with the high angle of an image as well as the low angle thereof. |
| 申请公布号 |
JPS5389424(A) |
申请公布日期 |
1978.08.07 |
| 申请号 |
JP19770003627 |
申请日期 |
1977.01.18 |
| 申请人 |
RICOH KK |
发明人 |
YAZAWA JIYUNICHI;KAWAMURA ATSUSHI |
| 分类号 |
G03B9/02;G02B5/00;G02B26/02 |
主分类号 |
G03B9/02 |
| 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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