×

Optical disc player with molded diffractive optical elements

  • US 5,825,741 A
  • Filed: 07/10/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 01/31/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical disc player comprising:

  • a laser;

    a lens receiving emissions from said laser, said lens including an injection molded item having a surface and a diffraction pattern having multiple discrete levels molded on said surface, said diffraction pattern being molded using a non-metallic, photolithographically generated master element;

    an optical disc support to position an optical disc to reflect laser emissions output from said lens; and

    a sensor to receive the reflected emissions.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×