Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1994-07-12
1995-12-05
Allen, Stephone B.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
2502082, 358311, 358314, H01J 4014
Patent
active
054731550
ABSTRACT:
The photometric sensor of the present invention includes a plurality of photoelectric conversion elements which accumulate electric charge according to the intensity of the light which is incident upon them; a CCD shift register, comprising a plurality of CCD (Charge Coupled Device) elements which correspond respectively to the plurality of photoelectric conversion elements, and at least one relay CCD element which does not correspond to any one of the photoelectric conversion elements, and which reads in the accumulated electric charges from the plurality of photoelectric conversion elements to the plurality of CCD elements and transmits them via the relay CCD element; a charge to voltage conversion circuit which converts the accumulated electric charges transmitted from the CCD shift register into photometric signals and outputs them in order; and a timing signal generation circuit which, when the photometric signals from the charge to voltage conversion circuit originating from the plurality of photoelectric conversion elements are output, outputs in synchronism with this output a timing signal, and, when a signal from the charge to voltage conversion circuit originating from the relay CCD element is output, does not output the timing signal in synchronism with this output.
REFERENCES:
patent: 4500915 (1985-02-01), Koike et al.
patent: 4809073 (1989-02-01), Chiba et al.
patent: 4856033 (1989-08-01), Hirota
patent: 5083207 (1992-01-01), Ishida et al.
patent: 5132803 (1992-07-01), Suga et al.
Goto Tetsuro
Iwasaki Hiroyuki
Maki Yasuhito
Takagi Tadao
Allen Stephone B.
Nikon Corporation
Sony Corporation
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