Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate
2011-06-07
2011-06-07
Robinson, Mark A (Department: 2883)
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
C349S088000, C345S094000
Reexamination Certificate
active
07956941
ABSTRACT:
According to one embodiment, a method for reducing speckle in an image produced from a coherent light source includes directing a beam of coherent light at an electrically controlled diffuser. An electrical signal is applied to the electrically controlled diffuser to produce an electrical field across the electrically controlled diffuser layer. At least one of an amplitude and a frequency of the electrical signal are varied to transition the controlled diffuser between a first state and a second state. The varied application of the electrical signal operates to reduce spatial coherence in an image projected through the electrically controlled diffuser.
REFERENCES:
patent: 3650608 (1972-03-01), Baker
patent: 5241416 (1993-08-01), Mitsutake et al.
patent: 5796447 (1998-08-01), Okumura et al.
patent: 6100862 (2000-08-01), Sullivan
patent: 6122023 (2000-09-01), Chen et al.
patent: 7339636 (2008-03-01), Voloschenko et al.
patent: 2005/0117096 (2005-06-01), Voloschenko et al.
patent: 2005/0207007 (2005-09-01), Shimoda et al.
Brady III Wade James
Brill Charles A.
Lee Paul C
Robinson Mark A
Telecky , Jr. Frederick J.
LandOfFree
Method and apparatus for reducing speckle in coherent light does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reducing speckle in coherent light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing speckle in coherent light will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2707722