×

Infrared reflective optical interference film

  • US RE34,605 E
  • Filed: 12/11/1992
  • Issued: 05/10/1994
  • Est. Priority Date: 07/24/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical interference film which reflects light in the infrared region of the spectrum while transmitting light in the visible region of the spectrum comprising multiple alternating layers of at least first, second, and third "diverse", substantially transparent polymeric materials A, B, and C, each of said layers being of an optical thickness of between about 0.09 and 0.45 micrometers and each of said polymeric materials having a different index of refraction, ni, and wherein the refractive index of said second polymeric material is intermediate the respective refractive indices of said first and third polymeric materials.

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