Accession Number:
ADD002658
Title:
Liquid Crystal Optical Image Attenuator.
Descriptive Note:
Patent,
Corporate Author:
DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s):
Report Date:
1976-02-10
Pagination or Media Count:
5.0
Abstract:
The invention is an optical image attenuator with an attenuation range of over 100,000. An optical lens device focuses the image on a first liquid crystal layer which scatters the directed light only when an electrical potential is applied to the layer, by means of transparent electrodes, and in proportion to the strength of potential applied. A proportion of the scattered light is absorbed within a coherent optic fiber plate or layer, the thickness and the spacing of the individual fibers of which can be varied to vary the contrast and attenuation of the system. Several stages may be stacked in series to obtain sufficiently high attenuation.
Descriptors:
Subject Categories:
- Electrooptical and Optoelectronic Devices
- Fiber Optics and Integrated Optics