Birefringent interference polarizer

Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

359500, 359900, 156229, 15624411, 264 134, 264 17, 4251311, 4251335, 4271631, G02B 530, B29C 4706, B29D 1100

Patent

active

058726535

ABSTRACT:
A birefringent interference polarizer which may be fabricated from readily available materials using established coextrusion techniques is provided. The polarizer has a level of light absorption near zero and can be fabricated to polarize and reflect light of specific wavelengths while transmitting light of other wavelengths. The polarizer includes multiple alternating oriented layers of at least first and second polymeric materials having respective nonzero stress optical coefficients which are sufficiently different to produce a refractive index mismatch between the first and second polymeric materials in a first plane which is different from the refractive index mismatch between the first and second polymeric materials in a second plane normal to the first plane. The refractive index mismatch in the first plane is preferably at least 0.03.

REFERENCES:
patent: 3213753 (1965-10-01), Rogers
patent: 3438691 (1969-04-01), Makas
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3610729 (1971-10-01), Rogers
patent: 3711176 (1973-01-01), Alfrey, Jr. et al.
patent: 3759647 (1973-09-01), Schrenk et al.
patent: 3773882 (1973-11-01), Schrenk
patent: 3884606 (1975-05-01), Schrenk
patent: 4309075 (1982-01-01), Apfel et al.
patent: 4310584 (1982-01-01), Cooper et al.
patent: 4446305 (1984-05-01), Rogers et al.
patent: 4525413 (1985-06-01), Rogers et al.
patent: 4540623 (1985-09-01), Im et al.
patent: 4805989 (1989-02-01), Nakajima
patent: 4895769 (1990-01-01), Land et al.
patent: 4937134 (1990-06-01), Schrenk et al.
patent: 5122905 (1992-06-01), Wheatley et al.
patent: 5122906 (1992-06-01), Wheatley
patent: 5486949 (1996-01-01), Schrenk et al.
patent: 5612820 (1997-03-01), Schrenk et al.
Radford et al, "Reflectivity of Iridescent Coextruded Multilayered Plastic Films," Polymer Engineering and Science, May 1973, vol. 13, No. 3.
Vasicek, "Optics of Thin Films" (1960).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Birefringent interference 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 Birefringent interference polarizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Birefringent interference polarizer will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2067181

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.