Focus detection apparatus and focus detention method

Details Focus detection apparatus and focus detention method Focus detection apparatus and focus detention method

2011-04-26

2011-04-26

Perkey, W. B. (Department: 2862)

Photography

With exposure objective focusing means, focusing aid, or...

Having accumulation photoarray and time control means

C348S345000

Reexamination Certificate

active

07933510

ABSTRACT:
This invention includes accumulation units (102a, 102b) which accumulate signals obtained by sensing units (111a, 111b), an area determination unit (103, 100) which sets the size of an area of a sensing unit to be segmented into a plurality of areas on the basis of the information of a lens to be focus-detected, accumulation control units (104a-104c, 105) which control, for each of the areas, accumulation of signals obtained in a plurality of areas by the accumulation units, and a defocus detection unit (100) which detects defocus states in the respective areas from accumulated signals from a plurality of areas.

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