Optical filter wheel
Thorlabs

The FW102C stepper-motor-driven filter wheel will be the successor to the FW102 and FW102B motorized filter wheels. As with its former counterparts, the FW102C wheel measures Ø4" and will accomodate up to six Ø1" filters up to 0.25" (6.35 mm) thick. Each port is equipped with SM1 threading, making it compatible with our lens tube line. In addition, the filter wheels are cage compatible via the four 4-40 taps surrounding each filter access port. The filter wheel in intended for use in a host of automated applications including color CCD photography, fluorescence microscopy, and photometry.

Remote or Manual Operation
Filter selection can be made manually from the push buttons on the unit, or remotely from a USB 2.0 interface, BNC input, or RS-232 connection. The BNC input accepts a TTL level signal to trigger the rotation of the filter wheel. An easy-to-read display indicates the filter selection; the display intensity can be adjusted, making this filter wheel a nice choice for light-sensitive environments.

Mounting Options
The filter wheel design provides easy mounting to optical instruments. Two SM1-threaded ports are provided on the FW102C. Thorlabs offers an extensive selection of adapters (C-mount camera, microscope, and telescope mounts) for mating our SM1-compatible components to other thread standards. Removable covers are provided to allow either or both ports to be opened. The unit is powered by a 12 volt DC supply (provided with the unit).

Programming & Remote Control
Automation of filter sequences is available through the USB 2.0 interface. A simple command language facilitates the filter selections and the retrieval of filter status. The FW102C comes with the controller, filter housing, a filter wheel, a simple-to-use GUI application program, a 12 Volt DC supply, and 6 threaded retaining rings for holding the Ø1" optics in place.