Industrial optical shutter

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel

Reexamination Certificate

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Details

C318S560000, C318S685000, C318S696000, C396S244000, C396S256000, C396S259000, C396S458000, C396S459000, C396S493000

Reexamination Certificate

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10983441

ABSTRACT:
A highly versatile optical shutter for industrial and scientific applications is disclosed. The has a aperture which defines a light path through the shutter, and a shutter vane or blade that is moved into and out of the light path using a precision, microprocessor controlled motor, such as a stepping motor. Preferably, the motor is mounted on the shutter housing using a shock absorbing material. A control unit associated with the shutter comprises the microprocessor, a motor driver, preferably one which is capable of microstepping the motor, and a non-volatile memory device, such as EEPROM, which stores a plurality of shutter control programs defining different trajectories of the shutter vane. Different programs may be used, for example, to maximize shutter speed or frequency, or to minimize vibrations.

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“Electronic Shutters,” Melles Griot, rendered in pdf Apr. 21, 2003 by Ester Cochran, copyright Apr. 2003, www.mellesgriot.com.
Patent Search, Nerac, Inc., Nov. 1, 2004.

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