Greyhawk Systems, Inc.

The Boeing Company

James B Turner

Roderick James McInnis

Charles S Foss

An apparatus for correcting deviations in image linewidth in a image projection system having a laser and a liquid crystal cell wherein images are made on the liquid crystal cell by impinging the laser on said cell. The apparatus also has apparatus for creating a test image having a plurality of lines of specific width on a liquid crystal cell and calculating the difference between the linewidth of the plurality of lines of said test image as created and as expected. Furthermore, apparatus are provided for modifying the period of the laser light based on said differences in linewidth between the plurality of lines (as created and as expected) to correct deviations in image linewidth, whereby deviations in image linewidth are substantially eliminated.

Projected image linewidth correction apparatus and method

An apparatus for correcting deviations in image linewidth in a image projection system having a laser and a liquid crystal cell wherein images are made on the liquid cyrstal cell by impinging the laser on said cell. The apparatus also has apparatus for creating a test image having a plurality of lines of specific width on a liquid crystal cell and calculating the difference between the linewidth of the plurality of lines of said test image as created and as expected. Furthermore, apparatus are provided for modifying the period of the laser light based on said difference in linewidth between the plurality of lines (as created and as expected) to correct deviations in image linewidth, whereby deviations in image linewidth are substantially eliminated.

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Menlo Park, CA, United States of America

James B Turner