Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1986-05-29
1989-03-28
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
356328, 356244, G01N 2113, G01J 332
Patent
active
048158429
ABSTRACT:
A monochromatic spectrometer for evaluating contamination changes in the surface condition of lenses, reflectors and similar optical samples in the vacuum of a space mission includes a vacuum ultraviolet beam source redirected from a dispersion grating through a test station and reflected from a mirror to a photodetector. A rotatable carrier supports two or more optical samples, both transmissive and reflective and selectively positions one sample at a time at the test station so that the selected sample modifies the VUV beam according to its surface condition. The mirror is movable from a first position in which it reflects the beam transmitted through a sample to second position in which it reflects the beam reflected from a sample. The sample condition measured by the photodetector, the position of the rotatable carrier and mission elapsed time are recorded in a memory for re-transmission or later read out.
REFERENCES:
patent: 3532428 (1970-10-01), Coogan
patent: 3687519 (1972-08-01), Mapes
patent: 4040750 (1977-08-01), Zwiener
patent: 4640617 (1987-02-01), Hughes et al.
Fancy Robert D.
Flint Bruce K.
Jarratt, Jr. Robert V.
Acton Research Corporation
Grover James H.
McGraw Vincent P.
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