Optical: systems and elements – Mirror – Plural mirrors or reflecting surfaces
Patent
1996-09-19
1998-08-25
Nguyen, Thong
Optical: systems and elements
Mirror
Plural mirrors or reflecting surfaces
359858, 359365, G02B 510, G02B 1700
Patent
active
057988803
ABSTRACT:
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 which is adjacent to the main field mirror; a light beam outlet window formed in the mount; 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 plurality 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.
REFERENCES:
patent: 3726598 (1973-04-01), Gilby
patent: 3825325 (1974-07-01), Hartley et al.
patent: 4209232 (1980-06-01), Chernin
patent: 4626078 (1986-12-01), Chernin et al.
patent: 4676652 (1987-06-01), Chernin
Chernin et al., "Optical Multipass Matrix Systems", Applied Optics, Jan. 1, 1991, vol. 30 No. 1 pp. 51-58.
Nguyen Thong
Sikd-er Mohammad Y.
Tokyo Gas Co. Ltd.
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