Physical and psychophysical properties of a liquid crystal diffuser.
A number of optical and psychophysical properties of a new liquid crystal diffuser were measured. The data suggest that the liquid crystal window offers an inexpensive and readily adjustable source of diffusive blur, as well as being a useful shutter, luminance filter, and variable contrast attenuator. The wavelength dependency of the scattering produced by the liquid crystal varies with applied voltage. The diffusive blur, overall luminance and contrast reduction, and short wavelength light attenuation produced by the liquid crystal window may provide a useful model for the intraocular scattering associated with cataract.
Herse
P R
PR
Department of Optometry, University of Auckland, New Zealand.
D015350:Contrast Sensitivity; D003461:Crystallography; D005374:Filtration; D008027:Light; D055095:Optics and Photonics / Q000295:instrumentation*; D011601:Psychophysics; D012542:Scattering, Radiation