| Original document(15 pages) 中文版 |
The invention discloses the fix-range mutograph, the units which it needs includes: Optical imaging system, to format optical imaging operation. Digital signal processing system is to send and receive signal, to hand environment space frequency-changing parameter. Actuating device is to receive the signal which was sent by digital signal processing system, and it also can actuate optical imaging system working. It works as following: first, it supplies a sampling area, and divides it into complex number small sampling areas to get analytic sampling relative magnitude. Then it checks the optical imaging system specification standards to know the distances great enough theoretical parameterA1 which related to the infinity objects, and the distances great enough theoretical parameter A2 which related to the short range, then gets the results |A2-A1| and minus A3, so A=|A2-A1|-A3. Finally optical imaging system uses the focal position of the actual the infinity objects and plus A, so the results we got are used to the starting searching step number which starting to search, and digital signal processing system send the output signal to the actuating device, and the actuating device start the optical imaging system to fix the narrower step length searching, according to the relative magnitude of the sampling area, we can found the basic point of the auto focusing to shot in sure distance. |
Application Number
申请号 |
200610122851 |
Application Date
申请日 |
2006.10.20 |
| Title 名称 |
Fixed-distance shooting method |
Publication Number
公开号 |
1936688 |
Publication Date
公开日 |
2007.03.28 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
G03B13/36;H04N5/225 |
Applicant(s) Name
申请人 |
Pulihua Science-Technology Co., Ltd., Foshan |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
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| More information 更 多 信 息 |
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