Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1989-01-17
1990-04-17
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
358107, G01C 308
Patent
active
049174886
ABSTRACT:
An apparatus and method for measuring the distance between CRT image display and a photocell spaced apart from the CRT, including apparatus to selectively illuminate a point and a line on the image screen, and apparatus which provides a distance measurement according to the ratio of the received light for the point and the line image, respectively. The present invention provides a highly accurate, non-contacting apparatus and method for measuring distance and is inherently independent of many sources of distance measurement error. Moreover, approximations in the technique are available which provide measurement accuracy to a predetermined level. The resulting apparatus, when mounted in an optical system, provides for the accurate adjustment of the optical system parameters and components.
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Buczinski Stephen C.
Management Graphics, Inc.
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