Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2006-05-30
2010-06-29
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S201800, C348S345000, C396S104000
Reexamination Certificate
active
07745772
ABSTRACT:
An image forming state detection device comprises a micro-lens array that is disposed at a position set apart from a predetermined focal plane of an image forming optical system by a specific distance and includes a plurality of micro-lenses arrayed with a predetermined pitch, a light-receiving portion array that includes a plurality of light-receiving portions each corresponding to one of the micro-lenses in the micro-lens array and receives an image on the predetermined focal plane via the individual micro-lenses, a signal string extracting means that extracts a pair of signal strings corresponding to images, formed with light fluxes having passed through different pupil areas of the image forming optical system, based upon light reception outputs obtained from the plurality of light-receiving portions, and an image forming state calculating means that calculates an image forming state at the image forming optical system by detecting an offset with regard to the phases of the pair of signal strings extracted by the signal string extracting means.
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Co-pending U.S. Appl. No. 12/038,731.
Ren Ng et al., “Light Field Photography with a Hand-held Plenoptic Camera,”Stanford Tech Report, CTSR Feb. 2005, pp. 1-11.
Office Action issued in U.S. Appl. No. 12/038,731 on Mar. 16, 2010.
Epps Georgia Y
Nikon Corporation
Oliff & Berridg,e PLC
Williams Don
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