Angular deviation measurement system

Details Angular deviation measurement system Angular deviation measurement system

1989-06-23

1991-10-22

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

356371, G01N 2188, G01B 1130

Patent

active

050590235

ABSTRACT:
A system for measuring optical angular deviation in a transparency such as an aircraft or automobile windscreen, visor, optical lens or the like is described wherein orthogonal first and second incoherent light line images are combined and separately optically encoded, such as by wavelength or by polarization vector using suitable color or polarization filters or beamsplitters, and projected through a transparency under examination, the combined images then separated to detect simultaneously and separately the vertical and horizontal components of angular deviation at a specific location in the transparency.

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