Optics: measuring and testing – For light transmission or absorption – By comparison
Patent
1983-06-17
1987-02-03
Lusignan, Michael R.
Optics: measuring and testing
For light transmission or absorption
By comparison
356243, 356438, G01J 102, G01N 2100
Patent
active
046406212
ABSTRACT:
A transmissometer includes electronic shutters for interrupting the transmitted and reference light beams at selected locations and at selected time intervals for establishing the various modes of operation of the transmissometer. The electronic shutters take the form of liquid crystal displays that are selectively energizable to either a clear or an opaque condition. The transmissometer also includes an electronic stepwise light attenuator located in the path of the light beams. The attenuator includes a body and multiple liquid crystal display segments uniformly distributed throughout the body, with the segments being independently energizable to provide stepwise opacity.
REFERENCES:
patent: 3850529 (1974-11-01), Brugger
patent: 3994601 (1976-11-01), Brugger
patent: 3997271 (1976-12-01), Brugger et al.
patent: 4017193 (1977-04-01), Loiterman
patent: 4050814 (1977-09-01), McFadden
patent: 4126396 (1978-11-01), Hartmann et al.
patent: 4222641 (1980-09-01), Stolov
patent: 4247205 (1981-01-01), Typpo
patent: 4294524 (1981-10-01), Stolov
patent: 4333724 (1982-06-01), Honma
patent: 4364639 (1982-12-01), Sinclair et al.
patent: 4422729 (1983-12-01), Suzuki et al.
patent: 4432649 (1984-02-01), Krause
Eastern Technical Associates, Inc.
Lusignan Michael R.
LandOfFree
Transmissometer and optical elements therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmissometer and optical elements therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmissometer and optical elements therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1089480