Optical system controlling apparatus

Details Optical system controlling apparatus Optical system controlling apparatus

1994-02-15

1995-10-03

Blankenship, Howard B.

Television

Special applications

Simulator

354402, 348347, G03B 118

Patent

active

054556490

ABSTRACT:
An optical system controlling apparatus includes an optical system for moving in a predetermined direction and varying an optical characteristic, a position sensor for detecting a position of the optical system which is in operation, and a controlling circuit for moving the optical system to a predetermined initial set position and resetting the position sensor when it is detected that the optical system has reached the initial set position, the controlling circuit varying a driving speed of the optical system before and after it is detected that the optical system has reached the initial set position.

REFERENCES:
patent: 5005956 (1991-04-01), Kaneda et al.

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