Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Data-conditioned encryption method
Glove
Method and apparatus for monitoring wireless communication in hearing assistance systems
Duty cycle adjustment of remote illumination source to maintain illumination output
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Mobile target system
Keypoint descriptor generation by complex wavelet analysis
  Randomly Featured Patents
Apparatus and method for extending and storing jib of crane
CMP apparatus and process sequence method
Method of expanding a tubular element in a wellbore
Airgun
Fuel injector with piezoelectric actuator preload
Catalytic material having improved conversion performance
Semiconductor memory device having two column transfer gate transistor groups independently provided for a sense amplifier and a programmed circuit
Information recording method and apparatus with suppressed mark edge jitters
Golf swing aid
Carrier current communications system