| 发明名称 |
Direction and collimation controllable flash |
| 摘要 |
An electronic flash is constructed with the ability to vary both collimation and direction allowing a user to direct the flash to a portion of the subject. Collimation and direction of the flash may be displayed in the viewfinder of the camera and may be independently controlled by the user.
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| 申请公布号 |
US6771898(B2) |
申请公布日期 |
2004.08.03 |
| 申请号 |
US20020108129 |
申请日期 |
2002.03.26 |
| 申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
BEAN HEATHER N;ROBINS MARK N. |
| 分类号 |
G03B15/02;G03B15/03;G03B15/05;G03B15/06;(IPC1-7):G03B15/02 |
主分类号 |
G03B15/02 |
| 代理机构 |
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代理人 |
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