G - Physics – 01 – B
Patent
G - Physics
01
B
349/31, 33/60
G01B 17/02 (2006.01) G01B 11/00 (2006.01) G01D 5/26 (2006.01) G01N 29/30 (2006.01) G01S 11/12 (2006.01)
Patent
CA 1146257
M-8993 OPTICAL BICHROMATIC POSITION FINDER ABSTRACT OF THE DISCLOSURE A method and apparatus for determining the position of a sensor with respect to a color screen are disclosed. The screen is colored with first and second colors in such a way that the intensity of each color varies from a minimum to maximum along a respective direction lying in the plane of the screen, the two respective directions being oblique to each other. As a result, each point on the screen is characterized by a unique pair of color intensities. The-sensor is provided with means for measuring the intensity of each color at the point on the colored surface corresponding to the location of the sensor. In one advantageous application of the invention, one surface of a screen is colored as described above, and the screen is placed over an object to be ultrasonically inspected. The ultrasonic scanner is provided with color intensity measurement means and can be made to automatically scan the entire object being tested without intervention by the operator, the re- sulting data being stored and processed by a microprocessor or other suitable means.
366412
Marks & Clerk
Optsonic Research Associated Ltd.
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