Total reflection measuring apparatus
AssigneeJasco Corporation
InventorsKazuhiko Kawasaki, Tadashi Miyazaki
Life of this patent
Estimating the term…
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.
Claims4
A total reflection measuring apparatus comprising a cassegrain mirror which has a cassegrain primary mirror and a cassegrain secondary mirror, and which focuses light which is reflected by the secondary mirror and the primary mirror on an object to be measured;
- a prism positioned at a location behind said cassegrain secondary mirror;
- and
- a prism lifting means for lifting the prism between a shadow behind the cassegrain secondary mirror and the object to be measured.
Dependencies are inferred from the claim text.