Patent · US Active

Microlens array diffusers

US11009631B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

AMS SENSORS SINGAPORE PTE. LTD. · SG

Inventors

Olivier Ripoll · Eßlingen, DE
Peter Blattner · Dingolshausen, DE

Key dates

Filing date	May 22, 2017
Grant date	May 18, 2021
Priority date	—
Expiry date	Jul 15, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/48
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A microlens array diffuser operable to generate a substantially diffuse illumination includes an array of microlenses, wherein each microlens has a respective periodicity-influencing characteristic and a respective surface profile. The array of microlenses includes at least two microlenses having respective periodicity-influencing characteristics that differ from one another and having respective surface profiles that differ from one another. Each surface profile is configured to generate a substantially equal field of illumination. The microlens array diffuser can be integrated as part of an illuminator operable to generate substantially diffuse illumination.

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