Optical: systems and elements – Holographic system or element – For producing or reconstructing images from multiple holograms
Patent
1997-06-25
1999-09-07
Spyrou, Cassandra
Optical: systems and elements
Holographic system or element
For producing or reconstructing images from multiple holograms
359 22, 359 28, 359 30, G03H 126
Patent
active
059495596
ABSTRACT:
A method and an apparatus for creating a holographic stereogram are provided for canceling noises localized to infinity and offering a high-quality hologram. The creating method is executed to display an image corresponding to a coordinate location on the hologram recording medium on the display unit, condense the laser beam transmitted through the display unit as an object beam at the coordinate location of the hologram recording medium, and apply part of the laser beam before transmission through the display unit as a reference beam onto the hologram recording medium, for sequentially forming stripped or dotted holographic elements on the hologram recording medium. The creating apparatus includes a first diffuser panel located close to the display unit, a mask, and a second diffuser panel, the latter two of which are located immediately before the hologram recording medium. The mask has an opening corresponding to the width of the holographic element. The second diffuser panel serves to one-dimensionally diffuse the object beam transmitted through the opening of the mask. The first diffuser panel is relocated at the exposure of each holographic element.
Baba Shigeyuki
Kihara Nobuhiro
Shirakura Akira
Kananen Ronald P.
Schuberg Darren E.
Sony Corporation
Spyrou Cassandra
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