Dichroic mirror and projector having the same

Details Dichroic mirror and projector having the same Dichroic mirror and projector having the same

1994-08-16

1997-07-15

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359490, 359496, 359498, 359583, 359589, 359634, 353 20, G02B 528, G02B 530, G02B 2728

Patent

active

056488700

ABSTRACT:
A dichroic mirror for reflecting a beam of a given color includes a substrate and a multilayered film formed on the substrate. The multilayered film is constituted by a first dichroic reflecting layer, an intermediate layer, and a second dichroic reflecting layer sequentially from the beam incident side. The first dichroic reflecting layer has a smaller reflection range of one of two orthogonal polarized components of the beam than the other of the two orthogonal polarized components. The intermediate layer rotates a polarization plane of at least part of a beam of the one component of the beam passing through the first dichroic reflecting layer, and the second dichroic reflecting layer reflects the at least part of the beam whose polarization plane is rotated by the intermediate layer. A projector having the dichroic mirror is also disclosed.

REFERENCES:
patent: 2184999 (1939-12-01), Land et al.
patent: 3767290 (1973-10-01), Lang et al.
patent: 4627688 (1986-12-01), Kobayashi et al.
patent: 4806750 (1989-02-01), Vincent

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1495958