Patent · US Expired

Method of producing dielectric diffraction gratings or dielectric multilayer interference filters

US4243398A · kind A · utility

14Cited by
8References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 2, 1979
Grant dateJan 6, 1981
Priority date—
Expiry dateFeb 2, 1999

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/023
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

There is disclosed a method of producing dielectric diffraction gratings. This method comprises (a) preparing a preform by forming one upon another layers of two or more glasses having different refractive indices at a given period, and (b) cutting the preform into flat pieces.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.