Patent · US Active

Spatial and spectral filtering apertures and optical imaging systems including the same

US10948638B2 · kind B2 · utility

4Cited by

38References

19Claims

0Family size

Assignee

Stryker European Operations Limited · IE

Inventor

Frederick Allen MOORE · Vancouver, CA

Key dates

Filing date	Mar 3, 2015
Grant date	Mar 16, 2021
Priority date	—
Expiry date	Mar 3, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/1013
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A filter includes a central filter region, the central filter region to transmit a first wavelength range, a peripheral filter region, the peripheral filter region to block a second wavelength range, and a transition filter region between the central and peripheral filter regions, the transition filter region to transmit or block the second wavelength range differently than the second wavelength range is to be transmitted or blocked in the central and peripheral filter regions. More generally, there may be “N” regions and up to N-1 transition regions.

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