光学 精密工程, 2011, 19 (5): 945, 网络出版: 2011-06-15   

大屏背投激光显示广角镜头的设计

Design of large dimension and rear projecting lens in laser display system
作者单位
1 中国科学院 长春光学精密机械与物理研究所 应用光学国家重点实验室, 吉林 长春 130033
2 中国科学院 研究生院,北京 100049
3 中国科学院 西安光学精密机械研究所 光谱成像技术重点实验室,陕西 西安 710119
摘要
研究了背投激光显示广角投影镜头的设计,并给出了1个162.6 cm(64 in)背投激光显示广角镜头的设计实例。投影镜头前的光学引擎采用数字光处理显示方式,并应用数字微镜晶片(DMD)进行数字光学处理。系统焦距为7.38 mm;设计波长为F,d,C;F数为2.46;全视场达到100°;在空间调制器DMD的Nyquist频率处,90%以上视场的MTF>0.6。系统渐晕系数为负,提高了投影显示像面边缘的光照度;全视场畸变<1.4%;1个像元尺寸内集中了点目标能量的90%以上。系统中使用了1个直角棱镜对光路进行折叠,减小了镜头长度,使棱镜展开后系统全长为259 mm。此外,该镜头只使用了1个二次项为0的非球面(高次项至8次),保证了镜头加工的可行性。设计结果显示,本文提出的设计方法有利于降低投影系统成本,实现产业化生产。
Abstract
After comparing different structures of wide-angle projecting lenses, a wide-angle lens for 162.6 cm(64 in) rear projection laser display is designed. The focal length of the system is 7.38 mm, the wavelength used in the design is F, d, C and the full field of view reaches 100°. The technical indii of the projection lens are summarized as follows: DMD (Digital Micromirror Delice) is used in the light digital processing, 90% MTF is greater than 0.6 at the Nyquist frequency; the barrel distortion of the system is smaller than 1.4%,and 90% of the energy in the point target is focused in a pixel dimension. Furthermore,a right angle prism is used to fold the optical path to decrease the length of the lens,so that the whole optical length of the system is 259 mm after outspreading the right angle prism. The vignetting factor of the wide angle is negative, which enhances the image illumination after projection.Moreover, an aspheric surface with the small size, zero conic constant and the maximum eight order coefficient is used to promise the feasibility of the mounting. Analytical results show that the design can decrease the production costs of the projecting system and promote the technological industrialization.

陈旭, 冯玉涛, 刘伟奇, 魏忠伦, 康玉思. 大屏背投激光显示广角镜头的设计[J]. 光学 精密工程, 2011, 19(5): 945. CHEN Xu, FENG Yu-tao, LIU Wei-qi, WEI Zhong-lun, KANG Yu-si. Design of large dimension and rear projecting lens in laser display system[J]. Optics and Precision Engineering, 2011, 19(5): 945.

本文已被 6 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!