Patent · US Active

Micro-projection device with anti-speckle imaging mode

US8998424B2 · kind B2 · utility

1Cited by

3References

15Claims

0Family size

Assignee

Lemoptix SA · CH

Inventors

Lucio Kilcher · Montreux, CH
Faouzi Khechana · Préverenges, CH
Nicolas Abele · Lausanne, CH

Key dates

Filing date	Apr 28, 2010
Grant date	Apr 7, 2015
Priority date	—
Expiry date	Jul 26, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04N9/3129
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A micro-projection system for projecting light on a projection surface (104), comprising: —at least one coherent light source (101); —optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; —said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; —said optical elements including at least one pixel displacement unit (106) for providing a displacement signal synchronized with the image scanning signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

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