Process and device for measuring optical quality of the surface

Details Process and device for measuring optical quality of the surface Process and device for measuring optical quality of the surface

1995-08-31

1997-02-11

Gonzalez, Frank

Optics: measuring and testing

Of light reflection

356239, 356430, 356128, G01N 2155, G01N 2100

Patent

active

056026480

ABSTRACT:
In order to measure the optical quality of the surface of a transparent sheet, the second surface of the sheet is placed in contact with a flexible material which is wetted with an index liquid. In the case of soda lime glass, water is suitable. The optical measurement can be carried out by traditional methods, ombroscopy in particular.

REFERENCES:
patent: 2660916 (1953-12-01), Zobel et al.
patent: 4049350 (1977-09-01), Bruck
patent: 4152069 (1979-05-01), Bruck
patent: 4645337 (1987-02-01), Obenreder
patent: 5146282 (1992-09-01), Guering et al.
Patent Abstracts of Japan, vol. 17, No. 536 (P-1620), Sep. 27, 1993, JP-A-149732, Jun. 15, 1993.
Patent Abstracts of Japan, vol. 12, No. 199 (P-714), Jun. 9, 1988, JP-A-63 001909, Jan. 6, 1988.

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