Dichroic polarizer

Details Dichroic polarizer Dichroic polarizer

2005-09-13

2005-09-13

Jones, Deborah (Department: 1775)

Stock material or miscellaneous articles

Composite

Of quartz or glass

C428S433000, C428S698000, C428S699000, C428S701000, C428S702000, C428S704000, C359S490020, C359S491010, C359S493010

Reexamination Certificate

active

06942925

ABSTRACT:
The invention belongs to polarizing devices and can be used in lighting equipment, manufacturing construction-material glasses, and in displays.The proposed dichroic polarizer includes a substrate and at least one layer dichroically absorbing electromagnetic radiation, into which two reflecting coatings are introduced, at least one of which is made partially transmitting. The layer dichroically absorbing electromagnetic radiation is located between the reflecting coatings. The materials and thicknesses of layers of both the dichroically absorbing electromagnetic radiation and the reflecting coatings are selected from the requirements to obtain, at the exit of the dichroic polarizer, an interference minimum for the absorbing component of electromagnetic radiation for, at least, one wavelength value.The invention leads to increasing efficiency of dichroic polarizers at the expense of increasing degree of polarization of electromagnetic radiation leaving the polarizer, while high transmission (reflection) coefficient for the non-absorbed component is preserved. 5 formulas, 3 illustrations.

REFERENCES:
patent: 4639069 (1987-01-01), Yatabe et al.
patent: 4783150 (1988-11-01), Tabony
patent: 5126880 (1992-06-01), Wheatley et al.
patent: 5673127 (1997-09-01), Takahara et al.
patent: 5686979 (1997-11-01), Weber et al.
patent: 5828488 (1998-10-01), Ouderkirk et al.
patent: 0 961 138 (1998-12-01), None
patent: 57208063 (1984-06-01), None
patent: 1778731 (1992-11-01), None
patent: WO 94/25895 (1994-11-01), None
patent: 9428073 (1994-12-01), None
patent: 9517691 (1995-06-01), None
patent: WO 96/16402 (1996-05-01), None
patent: WO 97/08692 (1997-03-01), None
patent: WO 97/39380 (1997-10-01), None
English Abstract of SU application 4908695/10 of Feb. 1991 for SU 1,778,731 of Nov. 1992.
Taccheo, S. et al.,Linearly Polarized, Single-Frequency, Widely Tunable Er: Yb Bulk Laser at Around 1550 nm Wavelength, American Institute of Physics, Applied Physics, vol. 69 (21), (Nov. 18, 1996), pp. 3128-3130.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3390313