摘要
提出了一种基于4f成像系统和衍射光栅结构的连续变频技术,利用该技术设计并制造了一套三维(3D)图像激光打印系统,可实现幅面为15cm×20cm的大视角(大于90°)、真彩色3D图像的激光打印输出。分析了3D图像中的变频结构特性,获得了变频结构参数的数学表达式。详细解析了连续变频结构的实现原理,推导了变频规律。通过实验证实了连续变频原理与输出系统的有效性,实现了彩色3D图像的激光打印输出。
A consecutive spatial frequency modulation technique using 4f imaging system and diffractive grating is proposed. Based on this technique, a three-dimensional （3D） image printing system is designed and fabricated, by which a large formate （15 cm × 20 cm） and true color 3D image with wide view angle （more than 90） is made. Characteristics of frequency modulation structure in 3D image are analysed. Mathematical expressions with parameters of frequency modulation structure are given. Principles of consecutive spatial frequency modulation are analysed and frequency modulation rules are deduced. Validity of the rules and system of spatial frequency modulation are varified by experiments. Color 3D images are outputed by laser printing system.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2014年第2期82-85,共4页
Chinese Journal of Lasers
基金
国家自然科学基金重点项目(91023044)
国家自然科学基金(61307009)
中国博士后科学基金第54批面上项目(2013M540462)
江苏省自然科学基金(BK20130330)
关键词
全息
三维打印
空频调制
激光直写
holography
three-dimensional printing
spatial frequency modulation
laser direct writing
