Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent
1985-12-31
1988-01-05
Evans, F. L.
Optics: measuring and testing
For light transmission or absorption
Of photographic film
356303, G01J 340
Patent
active
047172584
ABSTRACT:
A densitometer providing simultaneous sensing of the density in precisely adjacent portions of plural adjacent tracks. The densitometer preferably operates with stellar a pattern in which two reference tracks have been photographically recorded either side of a central specimen track of a star. The simultaneous detection of the three tracks insures a high degree of alignment between the reference and star tracks so that the correlation of their relative positions is a more accurate indication of the shift between the reference and star tracks. Alignment controls and the ability to microscopically view the radiation path through the densitometer facilitates set-up of the system to the high accuracy of results that it can achieve.
REFERENCES:
patent: 2626989 (1953-01-01), Brown
patent: 2844989 (1958-07-01), Price et al.
patent: 3012466 (1961-12-01), Kliebe
patent: 3339076 (1967-08-01), Hilal
patent: 3413065 (1968-11-01), Funk
patent: 3503689 (1970-03-01), Miller et al.
patent: 3518013 (1970-06-01), Sanford et al.
patent: 3528749 (1970-09-01), Bowker
patent: 3717412 (1973-02-01), Takuma et al.
patent: 3809482 (1974-05-01), Aslund et al.
patent: 3883251 (1975-05-01), Helava
patent: 3995958 (1976-12-01), Pfahl et al.
patent: 4005434 (1977-01-01), Golias et al.
patent: 4059357 (1977-11-01), Klein
patent: 4061428 (1977-12-01), Amano et al.
patent: 4106601 (1979-07-01), Jacobs
patent: 4229108 (1980-10-01), Childers
patent: 4236828 (1980-12-01), Kaneko et al.
patent: 4239393 (1980-12-01), Tobias
patent: 4242730 (1980-12-01), Golias
patent: 4266872 (1981-05-01), Mitsuhashi
patent: 4285594 (1981-08-01), Butts et al.
patent: 4317994 (1982-03-01), Mallozzi et al.
patent: 4329591 (1982-05-01), Fujiwara et al.
patent: 4338033 (1982-07-01), Kato et al.
patent: 4505589 (1985-03-01), Ott et al.
patent: 4508686 (1985-04-01), Shaber et al.
"Bulletin of the American Astronomical Society"165th Meeting Abstracts, DPS Late Papers, Observatory Reports, vol. 16, No. 4, Dec. 1984.
Steinhaus et al., "Design and Operation of a New Automatic Comparator for Measurement of Spectra", Report Los Alamos Scientific Laboratory, Sep. 7, 1964.
Evans F. L.
Smith College
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