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P‐129: Speckle Contrast Analysis at Different Locations in the Image Produced by a Laser Projection System
Author(s) -
Chang YanShuo,
Hsu WeiFeng,
Lin HoangYan
Publication year - 2012
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2012.tb06113.x
Subject(s) - speckle pattern , optics , projector , gamut , projection (relational algebra) , brightness , laser , polarizer , contrast (vision) , raster graphics , frame (networking) , computer science , holography , computer vision , artificial intelligence , computer graphics (images) , physics , telecommunications , birefringence , algorithm
The laser projection display system is attracted interests, especially for the pico‐projector, because of its four advantages: high brightness, color gamut, contrast and low power consumption. Laser projectors have three typical types that are full‐frame, line‐scanned and raster‐scanned systems. The full‐frame laser projection display system will be considered in this paper. To study the speckle contrast of the laser projection system, we have measured different areas and positions and discussed the system with or without polarizer and filmstrip. The speckle contrast was almost the same by measuring different areas and positions. The speckle contrasts with/without polarizer and filmstrip are 0.889/0.683 and 0.57/0.683 when displaying one computer generated hologram.