Dynamic calibration unit for a transmissometer

Details Dynamic calibration unit for a transmissometer Dynamic calibration unit for a transmissometer

1975-07-25

1976-11-30

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

250227, 250573, 356207, 356243, G01N 2122, G01N 2112

Patent

active

039946010

ABSTRACT:
A method and apparatus for calibrating a transmissometer having a primary light source and a primary detector for receiving light from the light source through a gas. The apparatus includes a lens supported on a lens. The method and apparatus includes means for catching a beam of light from the primary light source and compressing the beam so that it can be transmitted by a fiber optic guide, then the beam is expanded to its original dimensions so that the normal system sensor sees the source beams at its original dimension.

REFERENCES:
patent: 3702734 (1972-11-01), Lindahl et al.
patent: 3838925 (1974-10-01), Marks
patent: 3850529 (1974-11-01), Brugger
patent: 3920980 (1975-11-01), Nath

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