发明名称 |
ELECTRONIC FLASH APPARATUS FOR REDUCING THE INCIDENCE OF HUMAN EYELID CLOSURES DURING EXPOSURE |
摘要 |
<p>Electronic flash apparatus is provided that is capable of reducing the incidence of eyelid closure of a subject during an exposure interval when the subject is illuminated with visible light from the electronic flash apparatus immediately prior to the exposure interval. The electronic flash apparatus includes a visible light flash tube and an electrical circuit coupled thereto for controlling flash tube energization and de-energization immediately prior to and during an exposure interval. The electrical circuit includes apparatus for coupling the flash tube to a suitable source of electrical energy and for applying a trigger signal to the flash tube in order to illuminate the subject with a finite amount of visible light immediately prior to an exposure interval that will not cause the eyelids of the subject to blink in response thereto during the exposure interval.</p> |
申请公布号 |
CA2029474(C) |
申请公布日期 |
2001.01.30 |
申请号 |
CA19902029474 |
申请日期 |
1990.11.07 |
申请人 |
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发明人 |
HARRISON, GEORGE C. |
分类号 |
G03B15/05;H05B41/32;(IPC1-7):G03B15/05 |
主分类号 |
G03B15/05 |
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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