Optical filter employing holographic optical elements and image generating system incorporating the optical filter
   
   

The present invention relates to a solid state filter used in sequentially illuminating an image display, directly or indirectly, with first, second, and third bandwidth light. The solid state filter includes at least one hologram that is switchable between active and inactive states. While in the active state, the at least one switchable hologram diffracts a first bandwidth light. In contrast, the switchable hologram transmits the first bandwidth light without substantial alteration when operating in the inactive state. In one embodiment, the diffracted first bandwidth light is used to illuminate a monochrome image presented on a display device. In another embodiment, the transmitted first bandwidth light is used to illuminate the monochrome image presented on the image display.

 
Web www.patentalert.com

< Display device for a medical tomographic image

< Spectral drift and correction technique for hyperspectral imaging systems

> High absorption erbium doped amplifying optical fiber

> METHODS OF OPERATING MEMORY SYSTEMS IN WHICH AN ACTIVE TERMINATION VALUE FOR A MEMORY DEVICE IS DETERMINED AT A LOW CLOCK FREQUENCY AND COMMANDS ARE APPLIED TO THE MEMORY DEVICE AT A HIGHER CLOCK FREQUENCY
~ 00181