Resources Contact Us Home
Polarizer device

Image Number 7 for United States Patent #5295009.

The polarizer comprises a layer of cholesteric liquid crystal with Grandjean structure disposed in the path of the light and in which the light in a given wavelength range is reflected with selective and circular polarization or is transmitted with reversed direction of rotation, and a mirror which reversed the direction of rotation of the circular-polarized light. The component reflected by the mirror is also transmitted. If the liquid crystal layer is concentric with the source of natural light and the mirror is spherical, the result is a source of circular polarized light. A projection system is obtained by a combination of two of the aforementioned polarizers, one serving as a polarizer and one as an analyzer, and an interposed liquid crystal display cell for modulating the intensity of the polarized light.

  Recently Added Patents
Image processing apparatus and method having defective pixel detection and correction ability
Position pointer, variable capacitor and inputting apparatus
Method for fabricating a nitrided silicon-oxide gate dielectric
Flat panel display device and stereoscopic display device
Package for product
Testing apparatus and testing method for telephone apparatus
Methods for increasing efficacy of FOLR1 cancer therapy
  Randomly Featured Patents
Overhead cooling system with selectively positioned paths of airflow
Method of fabricating vertical channel semiconductor device
Pothole patcher and road surfacing device
Information transmission system and method
Method and apparatus for automatically applying lining material to large-area wall surfaces
Printed sheet mailers and methods of making
Hybrid spool valve for multi-port pulse tube
Ergonomic handle for a blow-molded container
Method and apparatus for auto-zeroing a flow sensor
Multi-processor axis control