Reflectometer featuring an integrated cavity of enhanced efficie

Details Reflectometer featuring an integrated cavity of enhanced efficie Reflectometer featuring an integrated cavity of enhanced efficie

1986-04-30

1987-04-28

McGraw, Vincent P.

Optics: measuring and testing

Of light reflection

With diffusion

250228, 356236, G01N 2147

Patent

active

046609849

ABSTRACT:
There is disclosed a reflectometer which uses an integrating cavity interposed between a pulsed light source and a test element. The cavity has enhanced efficiency by reason of its construction wherein a diffusely-reflecting surface is connected at opposite edges to mirrored surfaces that reflect back to the diffusely-reflecting surface, at least the majority of diffusely-reflected rays that are non-aligned with selected rays from the diffusely-reflecting surface that impinge unimpeded on the test element.

REFERENCES:
patent: 4022534 (1977-05-01), Kishner
patent: 4076421 (1978-02-01), Kishner
patent: 4277177 (1981-07-01), Larsen et al.

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