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OPTICAL CHOPPER

Photonics Spectra
Dec 2004
Boston Electronics CorporationRequest Info
 
OPTICAL CHOPPER A high-speed optical chopper based on 102-mm-diameter disks and manufactured by Scitec Instruments Ltd. is available from Boston Electronics Corp. The Model 310CD produces a chopping frequency of 120 kHz for a 445-slot disk, via the 50-W electrically commutated motor and drive unit. The system is designed to minimize loss to wind resistance and to overcome heat and vibration effects. The chopping disk is enclosed in a blade protector, and blanking plates cover unused apertures. Plates to reduce the size of the apertures in use also are provided.


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GLOSSARY
optical chopper
A mechanical or electrical-electromagnetic device for periodically interrupting or blocking abeam of light for a brief known interval. The three most common chopper types include the tuning fork chopper, the rotating shutter chopper (also referred to as rotating disc chopper) chopper and the more sophisticated optical chopper such as the Kerr cell.
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