Transparent screen and projection display unit

Details Transparent screen and projection display unit Transparent screen and projection display unit

2006-11-16

2009-10-20

Mahoney, Christopher (Department: 2862)

Optical: systems and elements

Projection screen

Embedded particles

C359S460000

Reexamination Certificate

active

07605978

ABSTRACT:
A transparent screen and a projection display unit capable of reducing the speckle with maintaining the brightness of the image light. A wavefront-dividing phase-modulating component21,which divides the wavefront of the image light emitted from a Fresnel lens screen7and modulates the phases of the wavefronts divided, is disposed before an optical diffusing component10. Alternatively, a spatial frequency modulating component22, which modulates the spatial frequency of the image light diffused by the optical diffusing component10, is disposed on the light-output side (observer side) of the optical diffusing component10.

REFERENCES:
patent: 6147801 (2000-11-01), Goldenberg et al.
patent: 6327083 (2001-12-01), Goldenberg et al.
patent: 10-501636 (1998-02-01), None
patent: 3698159 (2005-07-01), None

Affiliated with

Also associated with

Rating

Transparent screen and projection display unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transparent screen and projection display unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent screen and projection display unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4060036