The liquid crystal shutter is a vibration-free alternative to mechanical shutter that is especially convenient for use in polarized light beams. The liquid crystal switches between a state that rotates the input polarization by 90° with no volatge applied and a state that makes no change in the input polarization with 8 to 10 volts applied. The applied voltage is 2 kHz AC as supplied by our 4010, 3040 or 3050 liquid crystal drivers. The liquid crystal configuration is twisted nematic. The shutter is supllied with integral dichroic visible polarizers that function over the wavelength range of 450 nm to 700 to provide an average contrast ratio of better than 1,000:1 over this wavelength range. Shutters with larger aperture sizes and with wavelength coverage to 2.1 microns are availabe on a custom basis. Please call with your special requirements.
Specs/Benefits/Ordering Info