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Optical element

  • US 6,616,287 B2
  • Filed: 12/01/1998
  • Issued: 09/09/2003
  • Est. Priority Date: 12/02/1997
  • Status: Expired due to Term
First Claim
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1. A method for forming an optical element by using a metal mold which compensates for relative positions of plural reflection surfaces, said method comprising the steps of:

  • forming on a transparent member a first reflection surface group, comprising a plurality of reflection surfaces each having different curvature and arrayed in a predetermined direction, and a second reflection surface group, which opposes said first reflection surface group and comprises a plurality of optical surfaces including at least one reflection surface, each having different curvature and arrayed in the predetermined direction, wherein said plurality of reflection surfaces of said first reflection surface group and said at least one reflection surface of said second reflection surface group are integrally molded by a metal mold having shapes each corresponding to each shape of said reflection surfaces.

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