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Patent Searching and Data

Document Type and Number:
Japanese Patent JP4130225
Kind Code:
PCT No. PCT/GB96/02970 Sec. 371 Date Dec. 28, 1998 Sec. 102(e) Date Dec. 28, 1998 PCT Filed Dec. 2, 1996 PCT Pub. No. WO97/22022 PCT Pub. Date Jun. 19, 1997A method of producing an optical element including a photopolymer layer between two holograms is disclosed. The holograms have the same diffraction spacing and refractive index, but the first hologram has an efficiency of about one-half that of the second hologram, preferably about fifty per cent and ninety-five per cent respectively. The photopolymer is polymerized to adjust the refractive index of the photopolymer until output beams will overlap and cancel each other.

ストラチャン, ジョン, スコット.
Application Number:
Publication Date:
August 06, 2008
Filing Date:
December 02, 1996
Export Citation:
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ストラチャン, ジョン, スコット.
International Classes:
G02B5/00; G02B5/32; G02B3/08; G02B5/18; G03H1/04
Domestic Patent References:
Attorney, Agent or Firm:
小野 由己男
宮川 良夫