| 发明名称 |
METHOD AND APPARATUS FOR CONTROLLING EXPOSURE BY SELECTIVE USE OF BLOCKING VISIBLE FILTER |
| 摘要 |
<p>6243 Method and apparatus for automatically controlling exposure of a photographic film by evaluating selected spectral scene light frequencies during certain ambient light portions of an exposure interval and evaluating scene light frequencies exclusive of visible frequencies during other portions of the interval.</p> |
| 申请公布号 |
CA1149662(A) |
申请公布日期 |
1983.07.12 |
| 申请号 |
CA19800367722 |
申请日期 |
1980.12.30 |
| 申请人 |
POLAROID CORPORATION |
发明人 |
JOHNSON, BRUCE K.;MILLARD, JOHN B. |
| 分类号 |
G03B7/16;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/16 |
| 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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