Focus detecting apparatus for determining whether an object is m

Details Focus detecting apparatus for determining whether an object is m Focus detecting apparatus for determining whether an object is m

1994-01-24

1995-09-05

Perkey, W. B.

G03B 1336

Patent

active

054483298

ABSTRACT:
A focus detecting apparatus that includes an optical system having a group of focusing lenses. An object distance measuring device measures a defocus amount for a specific object imaged by the optical system. A focus judging device determines a focus state in accordance with a measurement of the object distance measuring device. A lens driver then drives the focusing lens group to a focal position, in accordance with the amount of defocus, wherein the apparatus includes a controller for repeatedly operating the object distance measuring device and the lens driver. A moving object judging device determines that the specific object is a moving object when the focus judging device determines an out-of-focus state more than one time during the repeated operations.

REFERENCES:
patent: 4537487 (1985-08-01), Kusaka
patent: 4550995 (1985-11-01), Toyama
patent: 4783677 (1988-11-01), Hamada et al.
patent: 4816856 (1989-03-01), Hamada et al.
patent: 4860045 (1989-08-01), Hamada et al.
patent: 4868592 (1989-09-01), Suzuki et al.
patent: 4924250 (1990-05-01), Hamada et al.
patent: 4952962 (1990-08-01), Suzuki et al.
patent: 4967224 (1990-10-01), Hamada et al.
patent: 4968006 (1990-11-01), Ishibashi et al.
patent: 4980715 (1990-12-01), Utagawa
patent: 4988856 (1991-01-01), Hamada et al.
patent: 5005039 (1991-04-01), Hamada et al.
patent: 5012267 (1991-04-01), Higashihara
patent: 5036349 (1991-07-01), Suzuki et al.
patent: 5040015 (1991-08-01), Hamada et al.
patent: 5065175 (1991-11-01), Suzuki et al.
patent: 5066968 (1991-11-01), Suzuki et al.
patent: 5157434 (1992-10-01), Suzuki et al.
patent: 5276476 (1994-01-01), Uenaka
patent: 5291235 (1994-03-01), Uenaka
Patent Abstract of Japan vol. 10, No. 371 (P-526) Dec. 11, 1986 and JP-A-61 165 716.
Patent Abstract of Japan vol. 16, No. 124 (E-1183) Mar. 3, 1992 and JP-A-03 289 775.
Patent Abstrct of Japan vol. 7, No. 146 (P-206) Jun. 25, 1983 and JP-A-58 059 416.
French Preliminary Search Report for French Application No. 9205919 and Annex.
French Preliminary Serch Report for French Application No. 9212521 and Annex.
French Preliminary Search Report for French Application No. 9212522 and Annex.
Search Report, Aug. 1992.
English Language Abstract of Japanese Publication No. 60-214325.

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