Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-02-16
1996-04-09
Lerner, Martin
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 18, 359 32, 359 33, 359478, G02B 532, G02B 2610, G02B 2722, G03H 122
Patent
active
055067034
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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Ando Manabu
Mizoguchi Kiyokazu
Moriya Masato
Shio Koji
Suzuki Toru
Kabushiki Kaisha Komatsu Seisakusho
Lerner Martin
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