Projection type display apparatus

Details Projection type display apparatus Projection type display apparatus

1996-03-06

1998-09-15

Dzierzynski, Paul M.

Optical: systems and elements

Polarization without modulation

Glare prevention by discriminating against polarized light

359496, 359499, 359500, 349 5, 349 9, 353 20, 362 19, G02B 530, G03B 2114

Patent

active

058087958

ABSTRACT:
A projection type display apparatus includes a spatial light modulator, a polarizing beam splitter formed of members of a transparent material, and a projection optical system. The polarizing beam splitter includes a dielectric multilayer film, and a first transparent material member and a second transparent material member sandwiching the dielectric multilayer film. Each of the first and second transparent material members is made of a transparent material with a refractive index of at least 1.8 and with an absolute value of the photoelastic constant being no more than 1.5.times.10.sup.-8 cm.sup.2 /N for light of wavelengths 0.4 .mu.m to 0.7 .mu.m, incident to the polarizing beam splitter.

REFERENCES:
patent: 4191456 (1980-03-01), Hong et al.
patent: 4687301 (1987-08-01), Ledebuhr
patent: 5453859 (1995-09-01), Sannohe et al.
patent: 5459592 (1995-10-01), Shibatani et al.
patent: 5576854 (1996-11-01), Schmidt et al.
Aben et al., "Photoelasticity of Glass", (1994) pp. 103-105 Springer-Verlag, New York.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-94258