Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1993-09-08
1995-06-06
Healy, Brian
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359629, 359633, 359849, 359850, 372 9, G02B 2710, G02B 718, H01S 310
Patent
active
054227585
ABSTRACT:
An adjustable beam splitter includes a pentaprism type reflector unit including a housing, a splitter mirror positioned in the housing for transmitting a portion of an input energy beam and for reflecting a portion of the input energy beam, and a reflective mirror mounted within the housing for directing the reflected portion of the input energy beam at a fixed angle to the input energy beam regardless of the angle of incidence of the input energy beam to the splitter mirror and regardless of manufacturing tolerances of the splitter mirror. Translation of the reflected portion of the input energy beam is reduced and the split ratio adjusted by rotating the pentaprism type unit about a line corresponding to the intersection of a plane containing the splitter mirror and a plane containing the reflective mirror.
REFERENCES:
patent: 3668406 (1972-06-01), Reid et al.
patent: 3879109 (1975-04-01), Thomas
patent: 4411492 (1983-10-01), Bluege
patent: 4660932 (1987-04-01), Eckbreth
patent: 5319668 (1994-06-01), Luecke
Franzen, "Precision Beam Spitters for CO.sub.2 Lasers" Applied Optics vol. 14, No. 3 3/75 pp. 647-652.
Advertisement for "Programmable Attentuator for High Power Lasers" from MPB Technologies Inc., Quebec Canada, published previous to Sep. 8, 1993.
Advertisement for "Polarizers & Wave Plates" from II-VI Corporation, Saxonburg, Pa., published previous to Sep. 8, 1993.
"Basic Beamsplitter Optics" report from II-VI Corporation, Saxonburg, Pa., published previous to Sep. 8, 1993.
Healy Brian
Laser Machining, Inc.
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