Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1995-01-30
1996-06-04
Epps, Georgia Y.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 37, 359 51, 2522991, 2522997, G02F 113
Patent
active
055238637
ABSTRACT:
A controllable liquid crystal polarizer has nematic liquid crystal and pleochroic dye in plural, parallel, elongate volumes in a sheet-like containment medium. Polarization effectiveness is variable as a function of electric field. A method of making the polarizer includes continuously forming a sheet-like film of a containment medium having a plurality of volumes of liquid crystal and pleochroic dye therein, and during curing of the film, stretching it to elongate the volumes.
REFERENCES:
patent: 3833287 (1974-09-01), Taylor et al.
patent: 4048358 (1977-09-01), Shanks
patent: 4071912 (1978-02-01), Budmiges
patent: 4182700 (1980-01-01), Benton et al.
patent: 4190330 (1980-02-01), Berreman
patent: 4202601 (1980-05-01), Burbo et al.
patent: 4264154 (1981-04-01), Petersen
patent: 4279474 (1981-07-01), Belgorod
patent: 4416514 (1981-07-01), Plummer
patent: 4435047 (1984-03-01), Fergason
patent: 4556289 (1985-12-01), Fergason
patent: 4560239 (1985-12-01), Katz
patent: 4579423 (1986-04-01), Fergason
patent: 4579426 (1986-04-01), Onufry
patent: 4591233 (1986-05-01), Fergason
patent: 4606611 (1986-08-01), Fergason
patent: 4616903 (1986-10-01), Fergason
patent: 4671618 (1987-06-01), Wu et al.
patent: 4673255 (1987-06-01), West et al.
patent: 4685771 (1987-08-01), West et al.
patent: 4688900 (1987-08-01), Doane et al.
patent: 4707080 (1987-11-01), Fergason
patent: 4756605 (1988-07-01), Okada et al.
patent: 4848875 (1989-07-01), Baughman et al.
patent: 4893902 (1990-01-01), Baughman et al.
patent: 4899503 (1990-02-01), Baughman et al.
patent: 4943152 (1990-07-01), Whelen
patent: 4968127 (1990-11-01), Russell et al.
patent: 5113270 (1992-05-01), Fergason
Hackh's Chemicm Dictionary, 4th Ed, McGram-Hill Inl. 1969 p. 240.
Japanese Patent Abstract, V.9, N170, p. 373, Kazuhiko et al. 1985 "Polarizing Film and its Production".
Electronics, V. 58, N31, p. 24, 1985, "Welding mask Adjusts for All Levels of Light".
Molecular Crystal LC, V.63, pp. 19-44, 1981, Uchida et al., "Guest-Host Type Liquid Crystal Display".
Epps Georgia Y.
Papalas Michael A.
LandOfFree
Controlled liquid crystal optical polarizer method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controlled liquid crystal optical polarizer method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlled liquid crystal optical polarizer method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-388450