Self-contained analog photodiode light sensing head

Details Self-contained analog photodiode light sensing head Self-contained analog photodiode light sensing head

1987-05-15

1988-07-19

Moore, David K.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Radiant energy controlled regulation of the current supply...

315159, 315156, 315311, 250214AL, 250214AG, H01J 4126

Patent

active

047587679

ABSTRACT:
A self-contained light sensor head (10) has a photodiode (18) operable to produce an electrical response proportional to light intensity, and an amplifier (20) that produces an output signal from the photodiode's response. The head (10) further includes a gain control circuit, for suitably controlling the gain of the output signal, and has noise and oscillation control circuits. The latter circuits permit the sensor to generate a low voltage output signal that is compatible for input directly to an analog computer.

REFERENCES:
patent: 3421005 (1969-01-01), Baker
patent: 3609451 (1971-09-01), Edgerly, Jr.
patent: 3670202 (1972-06-01), Paine et al.
patent: 4009387 (1977-02-01), Nuver
patent: 4236101 (1980-11-01), Luchaco
patent: 4281365 (1981-07-01), Elving et al.
patent: 4463284 (1984-07-01), Tamura et al.
patent: 4500814 (1985-02-01), Blake
patent: 4533854 (1985-08-01), Northrup
patent: 4587459 (1986-05-01), Blake
patent: 4647763 (1987-03-01), Blake
National Electrical Code-Article #725-Class 2, Table 725-31(a) and Table 725-31(b).

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