发明名称 |
Extended depth of field optical systems |
摘要 |
An imaging system is characterized at least by an ambiguity function ("AF") and a point spread function ("PSF"). The AF is a function of parameters u and v related to a misfocus parameter psi; the PSF is at least a function of psi. The system includes (1) an image recording device, (2) an optical arrangement for imaging an object to the image recording device, and (3) a post processor that renders an in-focus electronic image over a range of distances between the object and the optical arrangement. The optical arrangement alters phase such that a main lobe of the AF is broader in v for a specific u. The PSF has a functionally different form for a specific psi, in comparison to a PSF characterizing the system when the optical arrangement does not alter the phase for those specific values of u and psi over the range of distances.
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申请公布号 |
US7583442(B2) |
申请公布日期 |
2009.09.01 |
申请号 |
US20070748326 |
申请日期 |
2007.05.14 |
申请人 |
OMNIVISION CDM OPTICS, INC. |
发明人 |
CATHEY, JR. WADE THOMAS;DOWSKI, JR. EDWARD R. |
分类号 |
G02B5/18;G01S3/783;G02B5/00;G02B27/00;G02B27/46;G06K9/40 |
主分类号 |
G02B5/18 |
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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