Patent · US Active

Dichroic image splitter

US9547178B2 · kind B2 · utility

17Cited by

14References

19Claims

0Family size

Assignee

SEMROCK, INC. · US

Inventors

Turan Erdogan · Kingston, US
Ligang Wang · San Jose, US
Prashant Prabhat · Rochester, US

Key dates

Filing date	Aug 15, 2012
Grant date	Jan 17, 2017
Priority date	—
Expiry date	Aug 24, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/141
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical image splitter disposed in the path of image-bearing light along an optical axis has a coated dichroic surface disposed at an angle of 15 degrees or less relative to incident light along the optical axis. The coated dichroic surface has a number of layers of material, the of layers including layers having a first refractive index, nL, and layers having a second refractive index, nH, greater than the first refractive index. The coated surface transmits light of at least a first wavelength range to form a first image at an image plane and reflects light of a second wavelength range to form a second image at the image plane.

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