Optical design of an ultra-short-focus projection system with low throw ratio based on a freeform surface mirror

doi:10.3788/CO.20201302.0363

CIOMP OpenIR

	Optical design of an ultra-short-focus projection system with low throw ratio based on a freeform surface mirror
	B.-H. Yu,Z.-H. Tian,D.-Q. Su,Y.-X. Sui and H.-J. Yang
	2020
发表期刊	Chinese Optics
ISSN	20951531
卷号	13 期号:2 页码:363-371
摘要	In order to design an ultra-short-focus objective lens with a low throw ratio, a system of ultra-short-focus, low-throw-ratio objective lenses is designed using a freeform surface and refractive-reflective optical structure. The objective lenses consist of a rotationally symmetrical refractive lens group and a freeform surface mirror. A 11.938 mm Digital Micromirror Device (DMD) is used as a spatial light modulator to generate the image source. The normal-weighted iterative optimization method is used to calculate the freeform surface. Finally, the performance of the system is analyzed. The simulation results show that the ultra-short-focus projection objective lens can achieve a 3 048 mm screen projection at a distance of 580 mm. The throw ratio of the system is 0.19, which is extraordinarily low, and the maximum distortion of the system is less than 0.72%. This can meet the design requirements of low throw ratio ultra-short-focus projection objective lenses. This projection system is advantageous for its low throw ratio, low distortion and good imaging quality, which can provide a useful reference for the further development of ultra-short-focus projection systems. 2020, China Science Publishing & Media LTD. All right reserved.
DOI	10.3788/CO.20201302.0363
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收录类别	EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64748
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	B.-H. Yu,Z.-H. Tian,D.-Q. Su,Y.-X. Sui and H.-J. Yang. Optical design of an ultra-short-focus projection system with low throw ratio based on a freeform surface mirror[J]. Chinese Optics,2020,13(2):363-371.
APA	B.-H. Yu,Z.-H. Tian,D.-Q. Su,Y.-X. Sui and H.-J. Yang.(2020).Optical design of an ultra-short-focus projection system with low throw ratio based on a freeform surface mirror.Chinese Optics,13(2),363-371.
MLA	B.-H. Yu,Z.-H. Tian,D.-Q. Su,Y.-X. Sui and H.-J. Yang."Optical design of an ultra-short-focus projection system with low throw ratio based on a freeform surface mirror".Chinese Optics 13.2(2020):363-371.

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