Total reflection measuring apparatus

Details Total reflection measuring apparatus Total reflection measuring apparatus

1993-01-21

1994-09-13

Look, Edward K.

Optics: measuring and testing

Of light reflection

2503411, 359859, G01J 302, G01N 2101

Patent

active

053473647

ABSTRACT:
A total reflection measuring apparatus having a cassegrain mirror which has cassegrain primary mirror and cassegrain secondary mirror focuses the light which is reflected by the above secondary mirror and the primary mirror on an object of measurement. A prism which is positioned in lower part of the above cassegrain secondary mirror and a prism lift which moves the prism between a shadow behind the cassegrain secondary mirror and the object. The prism lift positions the prism in the shadow behind the cassegrain secondary mirror when visual observation is required. As a result, the clear observation of object becomes possible.

REFERENCES:
patent: 5093580 (1992-03-01), Sting
patent: 5200609 (1993-04-01), Sting et al.
patent: 5229611 (1993-07-01), Ukon

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