Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-05-22
1992-05-05
Arnold, Bruce Y.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 22, 359 23, G03H 126
Patent
active
051113139
ABSTRACT:
An electronic autostereoscopic display that presents 3D images through the use of horizontal parallax is disclosed. The device disclosed presents a 3D image, viewable over 360 degrees or less, without the need of special viewing glasses. The image is created electronically and in real-time, thus it can immediately display data gathered remotely, as in live 3D television, and similar applications. The autostereoscope consists of a cylindrical holographic optical element (HOE) which is spun about its axis of symmetry by a motor, light sources such as lasers emit light beams incident on the HOE, and electronic circuitry modulates the lasers according to data received and the angular displacement of the HOE. The HOE consists of 2 basic types of holograms which perform 2 different functions. The first type of hologram performs two dimensional raster scans onto the second type of hologram. The second type of hologram selectively directs the exit angle of the light beams from the raster scans to the eye of the viewer. Thus the laser beam incident on the HOE intersects its curved surface twice. The first HOE diffraciton produced multiple raster scans as the HOE spins. The second HOE diffraction directs each raster scan out of the cylinder at a specified angle. Therefore, the angular displacement of each eye of each viewer about the HOE's axis of symmetry determines the raster and image seen. The result is a convincing 3D image.
REFERENCES:
patent: 3178720 (1965-04-01), Collender
patent: 3737878 (1973-06-01), Gamblin et al.
patent: 3815979 (1974-06-01), Collender
patent: 4089597 (1978-05-01), Collender
patent: 4214257 (1980-07-01), Yamauchi
patent: 4367486 (1983-01-01), Eichenlaub
patent: 4431280 (1984-02-01), Carvelo
patent: 4649425 (1987-05-01), Pund
patent: 4671632 (1987-06-01), August
patent: 4717949 (1988-01-01), Eichenlaub
patent: 4799739 (1989-01-01), Newswanger
patent: 4807965 (1989-02-01), Garakani
patent: 4807971 (1989-02-01), Nurano
patent: 4829365 (1989-05-01), Eichenlaub
patent: 4853769 (1989-08-01), Kollin
Arnold Bruce Y.
Ryan J. P.
LandOfFree
Real-time electronically modulated cylindrical holographic autos does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Real-time electronically modulated cylindrical holographic autos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real-time electronically modulated cylindrical holographic autos will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1417003