Optical system for measurement of optical constant

Details Optical system for measurement of optical constant Optical system for measurement of optical constant

2005-07-05

2005-07-05

Evans, F. L. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

By comparison

C356S325000, C356S445000, C356S448000

Reexamination Certificate

active

06914680

ABSTRACT:
An optical system for determining an optical constant by measuring the absolute reflectance and the absolute transmittance of a substance by using an incoming side beam switching mirror for selectively switching the direction of a light from a light source to first or second converged light reflecting units. The first and second converged light reflecting units project the light from the beam switching mirror so as to be converged in an intersecting manner at the position of a sample holder that can be positioned to present a sample fitting hole or a through hole for measuring the reflectance/transmittance by providing the light to an exit side beam switching mirror and detector.

REFERENCES:
patent: 3402634 (1968-09-01), Bennett
patent: 3499716 (1970-03-01), Bennett
patent: 3687519 (1972-08-01), Mapes
patent: 6128093 (2000-10-01), Niikura

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