Patent · US Active

Optical apparatus with structure for liquid invariant performance

US10031334B2 · kind B2 · utility

0Cited by

54References

27Claims

0Family size

Assignee

Brien Holden Vision Institute Limited · AU

Inventors

Zeev Zalevsky · Rosh HaAyin, IL
Ofer Limon · Kfar Sava, IL

Key dates

Filing date	Feb 9, 2011
Grant date	Jul 24, 2018
Priority date	—
Expiry date	May 7, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S977/932
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A phase-adjusting element configured to provide substantially liquid-invariant extended depth of field for an associated optical lens. One example of a lens incorporating the phase-adjusting element includes the lens having surface with a modulated relief defining a plurality of regions including a first region and a second region, the first region having a depth relative to the second region, and a plurality of nanostructures formed in the first region. The depth of the first region and a spacing between adjacent nanostructures of the plurality of nanostructures is selected to provide a selected average index of refraction of the first region, and the spacing between adjacent nanostructures of the plurality of nanostructures is sufficiently small that the first region does not substantially diffract visible light.

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