单色激光一次曝光记录真彩色全息图  

True color hologram making by single-exposure of one-wavelength laser

作　　者：王丁[1] 袁霞[1] 黄继阳[1] 

机构地区：[1]重庆大学数理学院,重庆400044

出　　处：《激光杂志》2005年第4期58-59,共2页Laser Journal

摘　　要：对普通照相所拍摄的彩色景物光栅编码黑白照片作一次单色激光全息曝光记录就得到景物的二维真彩色全息图。与一般的三次曝光法相比,本方法减少了对散射光的记录次数,提高了信噪比,可得到更清晰的全息像。记录中曝光次数的减少也提高了全息图的衍射效率,使再现像更明亮。最后,对图像的三基色信息的同时记录可使再现像颜色更趋于与原景物颜色一致。The three primary color image is encoded on a black-and-white photographic film by a camera. With this film and a one-waveleghty laser we obtain the 2D true color hologram of a nature scene only through single-enposuer holographic recording. In addition to simplify the process of making a color hologram, this mehod has the following merits .Firstly,it decreases diffuse light recording times and increase the ratio of signal and noise.The reconstructed holographic image is more clear.Secondly, the hologram has higher diffraction efficiency as the exposure times decrease.The third,the color of the reconstructed image will become better as the three primary image is recorded on the hologram at the same time.

关 键 词：真彩色全息图 单色激光 三色光栅 一次曝光 

分 类 号：O438.1[机械工程—光学工程]