Focus detecting device for use with cameras

Details Focus detecting device for use with cameras Focus detecting device for use with cameras

1988-04-11

1990-08-28

Perkey, W. B.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

35821319, 250204, 2502018, 2502086, G03B 300, G01J 120, H04N 5335

Patent

active

049529668

ABSTRACT:
An image sensing device capable of being utilized in an automatic focus detecting system includes a pair of sets of light sensing elements that are spaced from each other. These light sensing elements can have a variable accumulation time of storing electric charges depending upon the intensity of the light level incident thereon. Since the automatic focus detection system must be managed within the parameters of photography, a first and second light measuring element is uniquely positioned adjacent each of the sets of light sensing elements. The outputs of these light measuring elements can control the charge accumulation period.

REFERENCES:
patent: 3875401 (1975-04-01), Stauffer
patent: 3945023 (1976-03-01), Stauffer
patent: 4078171 (1978-03-01), Stauffer
patent: 4184968 (1980-01-01), Stauffer
patent: 4253752 (1981-03-01), Ichihara
patent: 4297571 (1981-10-01), Utagawa et al.
patent: 4329033 (1982-05-01), Masunaga et al.
patent: 4333007 (1982-06-01), Langlais et al.
patent: 4334150 (1982-06-01), Herbst et al.
patent: 4334151 (1982-06-01), Herbst et al.
patent: 4336450 (1982-06-01), Utagawa et al.
patent: 4387975 (1983-06-01), Araki
patent: 4410258 (1983-10-01), Aoki et al.
patent: 4417139 (1983-11-01), Kusaka
patent: 4460261 (1984-07-01), Eguchi et al.
patent: 4474449 (1984-10-01), Kusaka
patent: 4488799 (1984-12-01), Suzuki et al.
patent: 4500778 (1985-02-01), Kusaka et al.
patent: 4510384 (1985-04-01), Grimblely et al.
patent: 4613748 (1986-09-01), Imai
patent: 4634851 (1987-01-01), Ogasawara et al.

Affiliated with

Also associated with

Rating

Focus detecting device for use with cameras does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus detecting device for use with cameras, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus detecting device for use with cameras will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1592952