Method of measurement of haze in transparencies

Details Method of measurement of haze in transparencies Method of measurement of haze in transparencies

1983-02-02

1987-08-18

Arnold, Bruce Y.

Optics: measuring and testing

Of light reflection

With diffusion

356237, G01N 2147

Patent

active

046873384

ABSTRACT:
A method of measuring haze of an aircraft transparency includes producing a first reading representative of the level of light scattered by an area of a transparency under test while on the aircraft when it is illuminated by a known light source, and producing a second reading representative of the level of light scattered by a predetermined, preferably worst haze condition, reference plate when it is illuminated by the light source in place of the transparency. Then, a ratio of the first and second readings is calculated to provide a quantitative measure proportional to the degree of haze in the transparency test area.

REFERENCES:
patent: 1949619 (1934-03-01), Pfund
patent: 2254062 (1941-08-01), Devol
patent: 2604809 (1952-07-01), Mitchell
patent: 2986065 (1961-05-01), Newman
patent: 3222978 (1965-12-01), Dreyfus
patent: 3782836 (1974-01-01), Fey et al.
patent: 3804521 (1974-04-01), Sprague
patent: 4373818 (1983-02-01), Yamamoto et al.

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