A practical laser projector with new ilumination optics for reduction of speckle noise

被引：43
|
作者：
Kasazumi, K [1 ]
Kitaoka, Y [1 ]
Mizuuchi, K [1 ]
Yamamoto, K [1 ]
机构：
[1] Matsushita Elect Ind Co Ltd, Storage Media Syst Dev Ctr, Moriguchi, Osaka 5708501, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2004年 / 43卷 / 8B期
关键词：
speckle noise; laser; projector; diffuser; second-harmonic generation; liquid crystal; colour gamut;
D O I：
10.1143/JJAP.43.5904
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have developed illumination optics for image projection systems. It realizes uniform illumination and suppression of speckle and diffraction noises by using a diffuser and integrator optics. By optimizing the diffusing angle of the diffuser, optical power loss was less than 10%. A proto type of a laser projector with a red wide-stripe semiconductor laser and green and blue second-harmonic generation lasers was realized by using the developed illumination optics and twisted nematic liquid-crystal panels. Still images from a personal computer and video images from a digital versatile disk (DVD) player were displayed with the system and a wide colour gamut and smooth images without diffraction noise nor speckle noise were confirmed.
引用
收藏
页码：5904 / 5906
页数：3
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