The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 1986
Filed:
Oct. 29, 1984
John Trias, La Mesa, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A wide screen display enables a number of viewers the simultaneous viewing f rapidly updated data in real time at video rates. A beam of coherent radiation from a laser is modulated at video rates in an acousto-optic modulator. The modulated beam is fed to an X-scanner that imparts an acousto-optic displacement of the modulated beam in the X-direction. A Y-scanner is aligned to receive the X-scanned modulated beam and imparts an acousto-optic reciprocal displacement of the beam so that the video modulated beam is displaced in both the X- and Y-directions. A liquid crystal light valve is disposed to receive the X and Y displaced modulated beam so that it scans the surface of the light valve to stimulate the photosensor layers within. This causes the impression of a replica voltage pattern on a bi-refringent liquid crystal in the valve. A high intensity lamp projects a high intensity incoherent light beam onto the liquid crystal light valve via a polarizing biprism. Since the bi-refringent liquid crystal has been modulated by the X- and Y-scanned modulated coherent beam, a corresponding image is reflected from the bi-refringent liquid crystal and onto the screen. The acousto-optic modulation X-scan and Y-scan occur at much higher rates and with greater control than conventional arrangements so that the resolution of two about 2,000 lines at a video rate is possible. The real-time display provides a number of viewers with a more realistic image so that responsive decisions and actions may be taken.