Optical: systems and elements – Polarization without modulation – Polarizarion by dichroism
Patent
1992-05-18
1995-06-06
Shafer, Ricky D.
Optical: systems and elements
Polarization without modulation
Polarizarion by dichroism
359490, 359494, 359529, 359589, 362 19, G02B 530
Patent
active
054227569
ABSTRACT:
A backlighting system employs a retroreflecting polarizer, comprising optical thin films coated on a structured material, to divide an incident beam of light into polarized components. One component is transmitted through the polarizer and the other is rejected. Optionally, a reflector (for example, a diffuser with a reflective layer) may be used; or, an absorbing polarizer may be added; or, a birefringent material may be included in the system.
REFERENCES:
patent: 2403731 (1946-07-01), MacNeille
patent: 2748659 (1956-06-01), Geffcken et al.
patent: 4791540 (1988-12-01), Dreyer, Jr. et al.
patent: 4805984 (1989-02-01), Cobb, Jr.
patent: 4841908 (1989-06-01), Jacobson et al.
patent: 4874631 (1989-10-01), Jacobson et al.
patent: 4906070 (1990-03-01), Cobb, Jr.
patent: 4913529 (1990-04-01), Goldenberg et al.
patent: 4917465 (1990-04-01), Conner et al.
patent: 4966438 (1990-10-01), Mouchart et al.
patent: 4966441 (1990-10-01), Conner
patent: 4974219 (1990-11-01), Korth
patent: 5013107 (1991-05-01), Biles
patent: 5061050 (1991-10-01), Ogura
patent: 5124841 (1992-06-01), Oishi
"Headlights for Motor-Vehicles with Polarized Light", Dr. E. Zehender, Lichttechnik, Reprint of 25 (#3), 100-103 (1973), HELIOS-Publ. Ltd.
"Novel Polarized Liquid-Crystal Color Projection and New TN-LCD Operating Modes", Martin Schadt, Jurg Funfschilling, SID 90 DIGEST, pp. 324-326.
Griswold Gary L.
Kirn Walter N.
Levinson Eric D.
Minnesota Mining and Manufacturing Company
Shafer Ricky D.
LandOfFree
Backlighting system using a retroreflecting polarizer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Backlighting system using a retroreflecting polarizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlighting system using a retroreflecting polarizer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-991893