Patent · US Expired

Optical system using a hologram coupler

US4057319A · kind A · utility

29Cited by
3References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 5, 1976
Grant dateNov 8, 1977
Priority date—
Expiry dateApr 5, 1996

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/31
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical system in which individual connections are made involving the passage of light between a specific device in one array of optical devices and a specific device in another array of optical devices includes a phase halogram plate of the transmission type fixed relative to each array.

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