×

Optical filter for spectroscopic measurement and method of producing the optical filter

  • US 5,760,910 A
  • Filed: 06/07/1995
  • Issued: 06/02/1998
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical filter comprising:

  • a generally circular substrate having a top surface and a bottom surface; and

    a plurality of optical coatings deposited on said top surface of said substrate such that said coatings vary linearly in thickness in a first direction across said top surface, said coatings remaining substantially constant in thickness across said top surface in a second direction substantially perpendicular to said first direction.

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