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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5506703 B1

PDFFull Text
Date of Patent:
Apr. 09, 1996

Filed:

Feb. 16, 1994

Three-dimensional image display device

Applicant:
Inventors:

Toru Suzuki, Hiratsuka, JP;

Hideyuki Wakai, Hiratsuka, JP;

Manabu Ando, Hiratsuka, JP;

Kiyokazu Mizoguchi, Hiratsuka, JP;

Keiji Terada, Hiratsuka, JP;

Masato Moriya, Hiratsuka, JP;

Koji Shio, Hiratsuka, JP;

Assignee:

Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JP;

Attorney:

Diller, Ramik & Wight

Primary Examiner:

Martin Lerner

Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ; G03H / ;
U.S. Cl.
CPC ...
359 17 ; 359 18 ; 359 32 ; 359 33 ; 359478 ;
Abstract

A three-dimensional image display device which comprises a holographic plate having a plurality of holograms divided in correspondence with rotational angles, the holographic plate being exposed so that when light is irradiated, each of the holograms forms a point image at a different position in a depth direction of the holographic plate; a drive unit for rotating the holographic plate; a light irradiating unit including a plurality of light sources arranged substantially in a straight line so that the light sources are kept at substantially equal distances from the holographic plate, for irradiating the holographic plate with light from the light sources; and a controller for controlling the drive unit and lighting operations of the plurality of light sources of the light irradiating unit in accordance with a signal indicative of a three-dimensional image to be displayed so as to control lighting of a plurality of point images formed in a three-dimensional space, whereby a three-dimensional image can be obtained with a simple configuration.

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Suzuki, Toru. (1996). Three-dimensional image display device (U.S. Patent No. 5506703). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5506703

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