https://scholars.lib.ntu.edu.tw/handle/123456789/387053
標題: | Efficient speckle reduction for a laser illuminating on a micro-vibrated paper screen | 作者: | HOANG-YAN LIN | 公開日期: | 2014 | 期: | 22 | 起(迄)頁: | E38-E46 | 來源出版物: | Applied Optics | 摘要: | We have demonstrated an efficient speckle reduction method for laser illumination using a microvibrated paper screen along the projection direction. Using this method, a micro-vibrated amplitude of 0.532 μm, or a 2π phase change is sufficient to de-correlate the generated speckle pattern for a static SHG green laser beam image. When the measured speckle contrast is lowered to about 5.0%, and comparable with an LED source, a speckle-free image can be achieved. This technique will be suitable for compact and portable laser illumination equipment, image display, signal sensing devices, and so forth. Wearable and near-to-eye laser display applications are also included. © 2014 Optical Society of America. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942369006&doi=10.1364%2fAO.53.000E38&partnerID=40&md5=d9fea10c135c4155abaf49aa18485596 http://scholars.lib.ntu.edu.tw/handle/123456789/387053 |
DOI: | 10.1364/AO.53.000E38 | SDG/關鍵字: | Display devices; Harmonic generation; Laser beams; Image display; Laser illuminating; Laser illumination; Projection direction; Signal-sensing devices; Speckle contrasts; Speckle patterns; Speckle reduction; Speckle |
顯示於: | 光電工程學研究所 |
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