×

Spectrum filtering for visual displays and imaging having minimal angle dependence

  • US 9,261,753 B2
  • Filed: 04/20/2012
  • Issued: 02/16/2016
  • Est. Priority Date: 04/20/2011
  • Status: Active Grant
First Claim
Patent Images

1. An optical spectrum filtering device comprising:

  • an interference filter assembly comprising a dielectric material having a refractive index of greater than about 1.5 disposed between a pair of parallel reflective surfaces;

    wherein the filter assembly is capable of transmitting a portion of an electromagnetic spectrum to generate a filtered output having a predetermined range of wavelengths that displays minimal angle dependence so that the predetermined range of wavelengths varies less than or equal to about 50 nm from an incidence angle of 0 to an incidence angle of 90°

    .

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