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Understand
Variable Wheels Attenuators
02
Closed or open style, motorized or manually tuned variable wheel attenuators.
Computer Software for Motorized Attenuator is designed to control motorized attenuator unit with one of our stepper motor controllers: 980-0030F-USB or 980-0030-RS232.
Closed Variable Wheel Attenuator 990-0704 is used when photodetectors with high sensitivity (e.g. CCD, photomultiplier, etc.) are used and it is necessary to eliminate the side background lighting fully.
Variable Wheel Attenuator 990-0604 is a basic model with 4 filter-set wheels. Each wheel contains 4 filter mounts each of Ø20 mm with a clear aperture of Ø18 mm.
A choice of filters is available for our standard 4-wheel attenuators, allowing 256 relative positions of wheels, rendering 99 different transmission values, among which you can find a very close match to the desired value.
The holder of 1 inch filters 990-0415 allows fixation of up to 5 filters into 1 inch optics ring holders. The thickness of optical filters (or any other optical elements) to be held is from 0.5 mm to 8.0 mm.
Motorized Variable Two Wheel Attenuator 991-0602 consists of two filter wheels. Each wheel contains eight filter mounts of either Ø20 or Ø25,4 mm with a clear aperture of either Ø18 or Ø23 mm.
Motorized Closed Variable Two Wheel Attenuator 991-0702 consists of two filter wheels. Each wheel contains eight filter mounts of either Ø20 or Ø25,4 mm with a clear aperture of either Ø18 or Ø23 mm.