Optical: systems and elements – Holographic system or element – Having particular recording medium
Patent
1996-03-18
1998-03-10
Henry, Jon W.
Optical: systems and elements
Holographic system or element
Having particular recording medium
359 13, 359576, 359601, G03H 102, G03H 118, G02B 2701, G02B 2700
Patent
active
057267820
ABSTRACT:
A hologram element includes an optically transparent base plate having first and second opposite surfaces. A film of a diffraction grating is provided on the first surface of the base plate. A nonreflective member is provided on the second surface of the base plate via a dipping process. The nonreflective member includes one of a film including SiO.sub.2 particles and a film of MgF.sub.2. It is preferable that the SiO.sub.2 particles have diameters of 10-150 nm. The diffraction grating film includes, for example, one of a gelatine film, a photopolymer film, and a photoresist film. The base plate includes, for example, a flexible resin film. It is preferable that the flexible resin film is made of a material selected from the group consisting of amorphous polyolefine, polycarbonate (PC), polymethyl methacrylate (PMMA), and perfluoroalkoxypolyethylene (PFA).
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Kato Tetsuya
Kawazoe Naoyuki
Mizutani Yasuhiro
Saburi Toshiki
Henry Jon W.
Nippondenso Co. Ltd.
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