Removal of hot spot speckle on rear projection screen using the rotating screen system

Author

Shin, Sung Chul ; Yoo, Sin Sung ; Lee, Sang Yeon ; Park, Chang-Young ; Park, So-Yeon ; Kwon, Jae Wook ; Lee, Seung-Gyu

Author_Institution

Digital Display Res. Lab., LG Electron., Seoul, South Korea

Volume

2

Issue

1

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

79

Lastpage

84

Abstract

This paper investigates a method to remove hot spot speckle, which is produced by laser-long coherence, on a projection screen. The objective of the work has been to first create an image from a digital light processing (DLP) display system using an RGB laser source. We then successfully obtained a high-quality image with speckle contrast, which is less than 2% when the screen was rotated by piezoelectric motor.

Keywords

display devices; light coherence; speckle; RGB laser source; digital light processing display; high-quality image; hot spot speckle; laser-long coherence; piezoelectric motor; rear projection screen; rotating screen system; speckle contrast; Displays; Fiber lasers; Laboratories; Laser beams; Laser noise; Noise reduction; Optical modulation; Optical noise; Spatial coherence; Speckle; Digital light processing (DLP); FC screen; laser; piezoelectric; projection; speckle;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2005.863779

Filename

1597156