Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers
Patent
1992-06-03
1994-03-01
McGraw, Vincent P.
Optics: measuring and testing
Sample, specimen, or standard holder or support
Fluid containers
250343, 356440, G01N 2105, G01N 2135
Patent
active
052912655
ABSTRACT:
An off-axis cavity absorption cell (10) includes astigmatic mirrors (22, 28). The cell design is based on a prototype design that yields a closed beam path having a desired geometry, but the mirrors are fabricated so that the ratios of their radii of curvature are actually larger than those calculated for the prototype. To achieve the desired closed beam path, the mirror spacing is adjusted from that of the prototype design, and the planes of their axes of greatest curvature are oriented out of the alignment that characterizes the prototype design. If the mirrors' manufacturing process yields errors in the curvature-radius ratios within certain prescribed limits, a cell of this design can be adjusted to achieve the closed beam path by simply changing the mirror separation and the "twist angle" between their respective planes of maximum curvature radius.
REFERENCES:
patent: 3253226 (1966-05-01), Herriott et al.
patent: 3437954 (1969-04-01), Herriott et al.
patent: 3550039 (1970-12-01), Herriott
patent: 5002391 (1991-03-01), Wolfrum et al.
patent: 5121405 (1992-06-01), Negus
John U. White, "Long Optical Paths of Large Aperture," J. Opt. Soc. Am., May 1942.
Herriott et al., "Off-Axis Paths in Spherical Mirror Interferometers," Applied Optics, Apr. 1964.
Herriott et al., "Folded Optical Delay Lines," Applied Optics Aug. 1965.
Kogelnik et al., "Laser Beams and Resonators," Applied Optics Oct. 1966.
McManus et al., "Narrow Optical Interference Fringes for Certain Setup Conditions in Multipass Absorption Cells of the Herriott Type," Applied Optics, Mar. 1, 1990.
Aerodyne Research Inc.
McGraw Vincent P.
LandOfFree
Off-axis cavity absorption cell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Off-axis cavity absorption cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Off-axis cavity absorption cell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-582030