Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1995-07-05
1997-02-04
Epps, Georgia Y.
Optics: measuring and testing
By particle light scattering
With photocell detection
356361, G01B 902
Patent
active
056004400
ABSTRACT:
An interferometer employs liquid crystals to effect optical path length cges in a Michelson-type interferometer. A beam splitter divides a first optical signal into second and third optical signals. The second optical signal is directed through a first array of liquid crystals, and the third optical signal is directed through a second array of liquid crystals. Mirrors reflect the second and third optical signals back through the arrays to the beam splitter which combines them into a fourth optical signal having an interference pattern. A detector array transforms the fourth optical signal into an electrical signal. A processing circuit is used to modulate the indices of refraction of the liquid crystals to effectuate optical path length changes between the second and third optical signals. The data processor may also be employed to transform the electrical signal into digital data which may be analyzed to discern spectral characteristics of the first optical signal that are of interest.
REFERENCES:
patent: 4072422 (1978-02-01), Tanaka et al.
patent: 4190366 (1980-02-01), Doyle
patent: 4594002 (1986-06-01), McNally
patent: 4627731 (1986-12-01), Waters et al.
patent: 4681445 (1987-07-01), Perkins
patent: 4725141 (1988-02-01), Georgiou et al.
patent: 4750834 (1988-06-01), Fateley
patent: 4905169 (1990-02-01), Buican et al.
patent: 4948253 (1990-08-01), Biegen
patent: 5034603 (1991-07-01), Wilson
patent: 5150236 (1992-09-01), Patel
patent: 5184233 (1993-02-01), Lim et al.
patent: 5452127 (1995-09-01), Wagner
Epps Georgia Y.
Fendelman Harvey
Kagan Michael A.
Kim Robert
Lipovsky Peter A.
LandOfFree
Liquid crystal interferometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid crystal interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal interferometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-684407