Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1995-02-15
1996-12-03
Pham, Hoa Q.
Optics: measuring and testing
By polarized light examination
With light attenuation
356384, 374 55, 374153, G01B 1100, G01N 2516
Patent
active
055813518
ABSTRACT:
A gap measurement device includes a first roller and a second roller. The first roller and the second roller define a gap which varies due to thermal expansion and contraction of the rollers. A first optical probe measures a first distance to the first roller and generates a first-distance signal indicative of the first distance. A second optical probe measures a second distance to the second roller and generates a second-distance signal indicative of the second distance. An electronics module generates a gap-width signal indicative of the gap based on the first-distance signal and the second-distance signal. The invention can also measure roller velocity, roller runout, roller registration, and the thickness of liquid on a roller.
REFERENCES:
patent: 3174392 (1965-03-01), Rantsch
patent: 3419330 (1968-12-01), Schneider
patent: 3565531 (1971-02-01), Kane et al.
patent: 3775012 (1973-11-01), Ling et al.
patent: 3792928 (1974-02-01), Poilleux
patent: 3930730 (1976-01-01), Laurens et al.
patent: 3940608 (1976-02-01), Kissinger et al.
patent: 4009965 (1977-03-01), Pryor
patent: 4038555 (1977-07-01), Freeman
patent: 4053237 (1977-10-01), Casey
patent: 4131365 (1978-12-01), Pryor
patent: 4148587 (1979-04-01), Erdmann et al.
patent: 4178692 (1979-12-01), Schultz
patent: 4294305 (1981-10-01), Oda
patent: 4295278 (1981-10-01), Gloor
patent: 4344232 (1982-08-01), Kihlstrom
patent: 4357104 (1982-11-01), Davinson
patent: 4358960 (1982-11-01), Porter
patent: 4489495 (1984-12-01), Scheinecker
patent: 4653905 (1987-03-01), Farrar et al.
patent: 4737035 (1988-04-01), Aoki et al.
patent: 4746211 (1988-05-01), Ruth et al.
patent: 4766323 (1988-08-01), Franklin et al.
patent: 4821544 (1989-04-01), Tamler et al.
patent: 4837615 (1989-06-01), Boshier
patent: 4915499 (1990-04-01), Gidon et al.
patent: 5162131 (1992-11-01), Rantanen et al.
Michael A. Marcus, "Processing Monitoring and Control with Fiber Optics," SPIE, vol. 1368 Chemical, Biochemical, and Enivornmental Fiber Sensors II (1990), Eastman Kodak Company, Analytical Technology Division, Bldg. 23, Kodak Park, Rochester, NY 14652-4201 pp. 191-202.
Kestner Diane E.
Marcus Michael A.
Schafer Kenneth R.
Bocchetti Mark G.
Eastman Kodak Company
Pham Hoa Q.
Ruoff Carl F.
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