Invention Grant
- Patent Title: Compact optical zoom
- Patent Title (中): 紧凑型光学变焦
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Application No.: US12423739Application Date: 2009-04-14
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Publication No.: US08203627B2Publication Date: 2012-06-19
- Inventor: Ewan Findlay , Andrew Harvey , Mads Demenikov
- Applicant: Ewan Findlay , Andrew Harvey , Mads Demenikov
- Applicant Address: GB Marlow, Buckinghamshire
- Assignee: STMicroelectronics (Research & Development) Ltd
- Current Assignee: STMicroelectronics (Research & Development) Ltd
- Current Assignee Address: GB Marlow, Buckinghamshire
- Agency: Gardere Wynne Sewell LLP
- Priority: EP08275005 20080416
- Main IPC: H04N5/262
- IPC: H04N5/262

Abstract:
A zoom lens system includes a variator lens group, a compensator lens group and a third lens group. The compensator lens group is arranged to only partially compensate for movement of the variator group. In order to provide further compensation for the zoom lens, an image enhancer implement wavefront coding and artifact reduction techniques. The compensator group may be fixed or alternatively, its movement relative to the variator may be effected by a simple cam mechanism.
Public/Granted literature
- US20090262221A1 COMPACT OPTICAL ZOOM Public/Granted day:2009-10-22
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