Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-07-02
1994-01-04
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 85, 351 44, 351158, 351246, G02F 1133, G02C 710
Patent
active
052765393
ABSTRACT:
A method and apparatus is presented for successively interrupting the transmission of light through a transparent body at a frequency such that a scene viewed through the transparent body by a human eye is perceived as a continuous image that is less bright than actually, and is viewed with minimal color distortion. In one aspect of the invention, the lenses of spectacles are provided with a layer of liquid crystal material that is normally transparent, but which responds to the application of an electrical charge to render the liquid crystal layer non-transparent. By adjusting the frequency of application of successive electrical charges, the lenses admit light at full brightness for small increments of time, with minimal color distortion, and interrupt the transmission of light for small increments of time, so that the light admitted at full brightness is perceived as being less bright or dimmed. In another aspect, the transparent body is "nodalized" so that small increments of the body are independently responsive to successive electrical charges, whereby the brightness of light passing through such "nodes" is perceived as being less bright or dimmed.
REFERENCES:
patent: 3603305 (1971-09-01), Oppenheimer
patent: 3986022 (1976-10-01), Hyatt
patent: 4021846 (1977-05-01), Roese
patent: 4106217 (1978-08-01), Witt
patent: 4279474 (1981-07-01), Belgorod
patent: 4462661 (1984-07-01), Witt
patent: 4688895 (1987-08-01), Jacob
patent: 4698668 (1987-10-01), Milgram
patent: 4792850 (1988-12-01), Liptoh et al.
patent: 4842400 (1989-06-01), Klein
patent: 4848890 (1989-07-01), Horn
patent: 4968127 (1990-11-01), Russell
patent: 4979033 (1990-12-01), Stephens
patent: 5015086 (1991-05-01), Okaue et al.
patent: 5067795 (1991-11-01), Senatore
patent: 5113270 (1992-05-01), Fergason
Blake William A.
Duong Tai V.
Humphrey Engineering, Inc.
Leavitt John J.
Sikes William L.
LandOfFree
Method and apparatus for controlling perceived brightness using 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 controlling perceived brightness using , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling perceived brightness using will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-311804