GORDON HENRY JENNINGS
Pilots at Mail Pouch Ln, San Luis Obispo, CA

6013911, Jan 11, 2000

Mar 2, 1998

9/033463

Earl Roger Hibbard - Arroyo Grande CA
James A. Cashin - San Luis Obispo CA
Gordon Henry Jennings - San Luis Obispo CA
Bevan Wright - La Palma CA
Steinar Larsen - Los Angeles CA

Ultra Stereo Labs Inc. - San Luis Obispo CA
Christie, Inc. - Cypress CA

G01J 132, G03B 2132

250205

The present invention is a system and method to quickly and accurately measure the luminance and luminance distribution of a light on the surface of an object so that the position of the lamp can be adjusted relative to the projector optics to obtain the best luminance available for that object. A scanning light receiver, which produces an optical image of the object whose luminance is to be tested, is set up so that it may view a substantial portion of the surface of the object. The light receiver is connected to a analyzer and control unit ("ACU") to which it sends an electronic image representing the reflected luminance of the surface during each scan. The reflected light that is detected by the light receiver is then analyzed by the ACU to determine the luminance levels and distribution across a substantial portion of the surface by measuring the voltage of each pixel detected by the light receiver measured against the voltage produced by a black level. Once this analysis is complete, the ACU sends the results to a driver interface unit which is connected to a light source position controller in the projector which continuously adjusts the position of the light source relative to the projector optics until optimal luminance and luminance distribution is achieved across the viewing surface. For example, using the method and system of the present invention, the position of the lamp continually and automatically may be fine tuned until optimum luminance is achieved.

5844144, Dec 1, 1998

Mar 4, 1997

8/810068

Gordon H. Jennings - San Luis Obispo CA

G01F 166

7386125

In a Doppler system for determining the average flow velocity of a liquid based on reflection from particles moving with the liquid, and in which system the received signal is subjected to both in-phase and quadrature detection, and is then analyzed into frequency domain in-phase channel amplitude and phase components and quadrature channel amplitude and phase components, an improved method for calculating the average flow velocity, comprising discarding those amplitude components for which the in-phase and quadrature phase components differ from approximately +90 degrees and approximately -90 degrees before using the remaining amplitude components to calculate an average amplitude-weighted frequency that is used in estimating the average flow velocity.