Control loop for motorized shutter operation

Details Control loop for motorized shutter operation Control loop for motorized shutter operation

1991-03-18

1993-12-21

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

3889281, 388933, G05B 106

Patent

active

052724263

ABSTRACT:
A light system is disclosed for controlling the amount of light supplied from a high density light source to a target. A shutter is positioned between the light source and the target, and a motor is coupled to said shutter to control the position of said shutter. Either manual or automatic control of said shutter is provided by electronic means coupled to said motor.

REFERENCES:
patent: 3580157 (1971-05-01), Casebeer
patent: 3605001 (1971-09-01), Miyakawa
patent: 3806789 (1974-04-01), Cap et al.
patent: 3890550 (1975-06-01), Izumi et al.
patent: 4072962 (1978-02-01), Maida
patent: 4169990 (1979-10-01), Lerdman
patent: 4675586 (1987-06-01), Eigner et al.
patent: 4928043 (1990-05-01), Plunkett
patent: 5034663 (1991-07-01), Cook

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