Three-dimensional image display device having an elementary hologram panel and method for manufacturing the elementary hologram panel

Patent 5926294 Issued on July 20, 1999. Estimated Expiration Date:

December 12, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Real time three dimensional display with angled rotating screen and method
Patent #: 5042909
Issued on: 08/27/1991
Inventor: Garcia, Jr., et al.

Display unit
Patent #: 5187597
Issued on: 02/16/1993
Inventor: Kato, et al.

Display having diffraction grating pattern
Patent #: 5301062
Issued on: 04/05/1994
Inventor: Takahashi, et al.

Hologram color filter, liquid crystal display device using the same, and fabrication process of hologram color filter Patent #: 5506701
Issued on: 04/09/1996
Inventor: Ichikawa

Inventors

Application

No. 764361 filed on 12/12/1996

US Classes:

359/22, For producing or reconstructing images from multiple holograms (e.g., color, etc.)359/32For reconstructing image

Examiners

Primary: Nguyen, Thinh
Assistant: Treas, Jared

Attorney, Agent or Firm

Dike, Bronstein, Roberts & Cushman, LLP, Conlin; David G.

Foreign Patent References

56-500313 JP. 03/12/1981
4-311916 JP. 11/12/1992
6-82612 JP. 03/12/1994
6-186901 JP. 08/12/1994
WO 80/02218 WO. 10/12/1980

International Classes

G03H 001/26
G03H 001/22

Foreign Application Priority Data

1995-12-12 JP

Abstract

A three-dimensional image display device capable of displaying a wide screen three-dimensional image which one can easily observe from any position and direction in the same way as viewing an existing object and which device can select display conditions not to allow a three-dimensional image to be semi-transparent, and a method for making said device. Three-dimensional image data includes image data and data on relative positions of each image point (pixel). A screen panel is composed of a plurality of elementary holograms for producing diffracted light for forming each point-image on a three-dimensional image (said elementary hologram is prepared by the method according to the present invention). On the basis of the three-dimensional image data, a control computer controls a modulator and X-Y deflector so that elementary holograms on the screen panel is illuminated one by one with modulated light by raster scanning of a laser light to represent a three-dimensional image composed of point-images. Modulation control is conducted by judging each point-image to be seen and selecting relating elementary holograms to be illuminated.