G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/61 (2006.01) G01J 3/26 (2006.01) G01N 21/31 (2006.01) G02B 17/00 (2006.01)
Patent
CA 2119711
A multiple reflection optical instrument including a housing; a main field mirror fixedly mounted on a mount which is disposed at one longitudinal end of the housing and has a light beam inlet window; an auxiliary field mirror fixedly mounted on the mount so as to be adjacent to the main field mirror and having a light beam outlet window; and first to fourth objective mirrors arranged at the other longitudinal end of the housing opposite to the field mirrors, wherein an image matrix is formed on the main and auxiliary field mirrors by a plurarity of reflection spots of the light beam passing through the inlet window into the housing, and a position of a center of curvature of each of the first to fourth objective mirrors, which is projected onto the main field mirror, is adjusted such that the finally reflected light beam toward the outlet window is a maximum even-numbered coming and going reflection reflected from the third objective mirror in the image matrix. The present invention further provides a novel reflected light catching method using the foregoing instrument.
G. Ronald Bell & Associates
Tokyo Gas Co. Ltd.
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