便携式投影仪投影物镜设计
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摘要
针对当前投影仪光源功耗大,光投影稳定性差,系统结构大的缺点,利用Zemax软件,设计出了一款大视场,短焦距,结构紧凑,适用于便携式投影仪的投影物镜系统。经过优化处理,最终获得的结构具有良好的成像质量,在空间频率为80lp/mm处中心视场MTF≥0.7,0.8视场MTF≥0.6,边缘视场处MTF≥0.48,畸变小于3%,满足给出的设计指标。并且在规定和要求的像元尺寸范围内能量集中度大于85%,照度曲线0.8倍视场以内整体高于90%,能量集中度高,照度均匀性好,与便携式投影仪能很好地搭配使用。
In view of the shortcomings of current projectors such as large light source power consumption,poor light projection stability and large system structure,using Zemax software,a large field of view(FOV),short focal length and compact projection system for portable projectors was designed.After optimization,the design structure was finally obtained with good imaging quality.At the spatial frequency of 80 lp/mm,the central FOV modulation transfer function(MTF)is≥0.7,the 0.8 FOV MTF is≥0.6,the edge FOV MTF is≥0.48,and the distortion is less than 3%,which can satisfy the design indicators given.Moreover,the energy concentration is greater than 85% in the specified and required pixel size range,the overall illumination curve is higher than 90% within 0.8 FOV,the energy concentration is high,and the illumination uniformity is good,which can be well matched with the portable projector for use.
In view of the shortcomings of current projectors such as large light source power consumption,poor light projection stability and large system structure,using Zemax software,a large field of view(FOV),short focal length and compact projection system for portable projectors was designed.After optimization,the design structure was finally obtained with good imaging quality.At the spatial frequency of 80 lp/mm,the central FOV modulation transfer function(MTF)is≥0.7,the 0.8 FOV MTF is≥0.6,the edge FOV MTF is≥0.48,and the distortion is less than 3%,which can satisfy the design indicators given.Moreover,the energy concentration is greater than 85% in the specified and required pixel size range,the overall illumination curve is higher than 90% within 0.8 FOV,the energy concentration is high,and the illumination uniformity is good,which can be well matched with the portable projector for use.
引文
[1]LIU Chang,XIANG Yang,LIU Bo,et al.Miniaturization design of infrared inverted telephoto optical system[J].Journal of Applied Optics,2011,32(3):426-429.刘畅,向阳,刘波,等.红外反远距光学系统的小型化设计[J].应用光学,2011,32(3):426-429.
[2]EL-GHOROURY H S,CARLSBAD C A,MCNEILLD A,et al.LED-based high efficiency illumination systems for usein projection systems:US,7889430[P].2009-08-09.
[3]ZHAO Xing,FANG Zhiliang,CUI Jicheng,et al.Study on the optical engine of the mini-projector[J].Acta Optica Sinica,2007,27(5):913-918.赵星,方志良,崔继承,等.微型投影机光学引擎的研究[J].光学学报,2007,27(5):913-918.
[4]GAO Y.Design of an ultra-short throw catadioptric projection lenswith a freeform mirror[J].SPIE,2016,154:101540S.
[5]AN Liansheng.Applied optics[M].Beijing:Beijing Institute of Technology Press,2002.安连生.应用光学[M].北京:北京理工大学出版社,2002.
[6]XU Jia.Investiongation on optical engine of projection display system based on LED[D].Shanghai:East China Normal University,2008.徐佳.基于LED的DLP投影显示光学引擎研究[D].上海:华东师范大学,2008.
[7]KREITZER M H.Folded,telecentric projection lenses for use with pixelized panels:US,6853493[P].2007-05-06.
[8]LIU Xiaochan,CHEN Chen,LI Weishan,et al.Design of universal short-focus projection lens[J].Journal of Applied Optics,2016,37(6):907-912.刘宵禅,陈琛,李维善.通用型短焦投影镜头的设计[J].应用光学,2016,37(6):907-912.
[9]CHEN Xu,FENG Yutao,LIU Weiqi,et al.Design of large dimension and rear projecting lens in laser display system[J].Optics and Precision Engineering,2011,19(5):945-950.陈旭,冯玉涛,刘伟奇,等.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):945-950.
[10]KREITZER M H,MOSKOVICH J.Projection lens having larger back focal length to focal length rations:US,5870228[P].1999-02-09.
[11]CANNON B L.Low element count projection lens for use with pixelized panl:US,6765731B1[P].2008-07-20.
[12]LI Tonghai,WANG Haixia,ZHAO Xinliang,et al.Design of the telecentric beam path aerial digital camera lens[J].Opto-Electronic Engineering,2011,38(3):25-28.李同海,王海霞,赵新亮,等.像方远心航拍数码相机镜头设计[J].光电工程,2011,38(3):25-28.
[13]HE Fengtao,JIA Qiongyao,SUN Linjun.Design of liquid crystal laser projection display system[J].Infrared and Laser Engineering,2012,41(10):2699-2702.贺锋涛,贾琼瑶,孙林军.液晶激光投影显示系统设计[J].红外与激光工程,2012,41(10):2699-2702.
[14]LIN Peng,YU Jianhua,CHEN Riguang,et al.Study on optical engine system for DLP of projection display based on LED[J].Advanced Display,2012(4):49-53.林鹏,余建华,陈日广,等.基于LED的DLP投影显示光学引擎的研究[J].现代显示,2012(4):49-53.
[15]GAO Zhishan.Application of Zemax software in aberration design[M].Nanjing:Nanjing University of Science and Technology Press,2006.高志山.Zemax软件在像差设计中的应用[M].南京:南京理工大学出版社,2006.
[2]EL-GHOROURY H S,CARLSBAD C A,MCNEILLD A,et al.LED-based high efficiency illumination systems for usein projection systems:US,7889430[P].2009-08-09.
[3]ZHAO Xing,FANG Zhiliang,CUI Jicheng,et al.Study on the optical engine of the mini-projector[J].Acta Optica Sinica,2007,27(5):913-918.赵星,方志良,崔继承,等.微型投影机光学引擎的研究[J].光学学报,2007,27(5):913-918.
[4]GAO Y.Design of an ultra-short throw catadioptric projection lenswith a freeform mirror[J].SPIE,2016,154:101540S.
[5]AN Liansheng.Applied optics[M].Beijing:Beijing Institute of Technology Press,2002.安连生.应用光学[M].北京:北京理工大学出版社,2002.
[6]XU Jia.Investiongation on optical engine of projection display system based on LED[D].Shanghai:East China Normal University,2008.徐佳.基于LED的DLP投影显示光学引擎研究[D].上海:华东师范大学,2008.
[7]KREITZER M H.Folded,telecentric projection lenses for use with pixelized panels:US,6853493[P].2007-05-06.
[8]LIU Xiaochan,CHEN Chen,LI Weishan,et al.Design of universal short-focus projection lens[J].Journal of Applied Optics,2016,37(6):907-912.刘宵禅,陈琛,李维善.通用型短焦投影镜头的设计[J].应用光学,2016,37(6):907-912.
[9]CHEN Xu,FENG Yutao,LIU Weiqi,et al.Design of large dimension and rear projecting lens in laser display system[J].Optics and Precision Engineering,2011,19(5):945-950.陈旭,冯玉涛,刘伟奇,等.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):945-950.
[10]KREITZER M H,MOSKOVICH J.Projection lens having larger back focal length to focal length rations:US,5870228[P].1999-02-09.
[11]CANNON B L.Low element count projection lens for use with pixelized panl:US,6765731B1[P].2008-07-20.
[12]LI Tonghai,WANG Haixia,ZHAO Xinliang,et al.Design of the telecentric beam path aerial digital camera lens[J].Opto-Electronic Engineering,2011,38(3):25-28.李同海,王海霞,赵新亮,等.像方远心航拍数码相机镜头设计[J].光电工程,2011,38(3):25-28.
[13]HE Fengtao,JIA Qiongyao,SUN Linjun.Design of liquid crystal laser projection display system[J].Infrared and Laser Engineering,2012,41(10):2699-2702.贺锋涛,贾琼瑶,孙林军.液晶激光投影显示系统设计[J].红外与激光工程,2012,41(10):2699-2702.
[14]LIN Peng,YU Jianhua,CHEN Riguang,et al.Study on optical engine system for DLP of projection display based on LED[J].Advanced Display,2012(4):49-53.林鹏,余建华,陈日广,等.基于LED的DLP投影显示光学引擎的研究[J].现代显示,2012(4):49-53.
[15]GAO Zhishan.Application of Zemax software in aberration design[M].Nanjing:Nanjing University of Science and Technology Press,2006.高志山.Zemax软件在像差设计中的应用[M].南京:南京理工大学出版社,2006.