Focus adjustment apparatus and image capturing apparatus

Details Focus adjustment apparatus and image capturing apparatus Focus adjustment apparatus and image capturing apparatus

2011-08-23

2011-08-23

Perkey, W. B. (Department: 2862)

Television

Camera, system and detail

Optics

C348S356000

Reexamination Certificate

active

08004598

ABSTRACT:
A focus adjustment apparatus or an image capturing apparatus is provided with a system controller. The system controller calculates a correlation value between an image in a focus detection area when a focusing lens is located at a lens position apart by a predetermined distance from a lens position where a focus evaluation value reaches a peak value, to a close end side, and an image in a focus detection area when a focusing lens is located at a lens position apart by a predetermined distance from a lens position where a focus evaluation value reaches a peak value, to an infinity side, and determines a lens position corresponding to a peak value to be a focused lens position, when a correlation value calculated by the correlation value calculation unit is over a predetermined value.

REFERENCES:
patent: 5485209 (1996-01-01), Muramoto et al.
patent: 2009/0051807 (2009-02-01), Kunishige et al.
patent: 2009/0091633 (2009-04-01), Tamaru
patent: 2005-208274 (2005-08-01), None

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