Light detector system with photo diode and current-mirror amplif

Details Light detector system with photo diode and current-mirror amplif Light detector system with photo diode and current-mirror amplif

1976-04-16

1978-04-18

Hix, L. T.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250214P, 307297, 307311, 357 36, G03B 708, H01J 3912, H01L 2972

Patent

active

040854116

ABSTRACT:
A light detector system includes a photo-diode being connected to an integrated circuit that includes a current-mirror amplifier. The current-mirror amplifier has a stable gain even down to the very low input currents that may be generated by a silicon photo-diode that is exposed to low levels of light intensity. The integrated circuit may also include the photo-diode itself as well as other circuitry for use in controlling the shutter speed of a camera to automatically provide the proper photographic film exposure.

REFERENCES:
patent: 3393604 (1968-07-01), Lundin
patent: 3418592 (1968-12-01), Solomon et al.
patent: 3424908 (1969-01-01), Sitter
patent: 3588672 (1971-06-01), Wilson
patent: 3626825 (1971-12-01), Years
patent: 3779142 (1973-12-01), Yata et al.
patent: 3808463 (1974-04-01), Mulder
patent: 3925718 (1975-12-01), Wittlinger

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