Patent · US Active

Projection apparatus

US9028073B2 · kind B2 · utility

1Cited by

3References

13Claims

0Family size

Assignee

Coretronic Corporation · TW

Inventors

Chuan-Te Cheng · Baoshan, TW
Tao-Hung Kuo · Baoshan, TW

Key dates

Filing date	Mar 21, 2012
Grant date	May 12, 2015
Priority date	—
Expiry date	Aug 7, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG03B21/008
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.

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