大变倍比光学被动半无热化变焦系统设计
Optical Design of Optical Passive Half-Athermalization Zoom Lens with High Zoom Ratio
查看参考文献11篇
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文摘
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针对传统变焦光学系统在环境温度变化的情况下,变焦全程无法一致清晰成像以及需频繁调焦的问题,提出了一种光学被动半无热化变焦系统设计方法,并设计了一种光学被动半无热化变焦系统。变焦系统的焦距为30~1000 mm,工作波段为486~656 nm,光圈为F_(4.4)~F_8,短焦采用光学被动无热化设计。变焦系统的成像质量良好,结构非常紧凑,在工作温度范围为-40~+ 60℃的情况下,只需长焦位置调焦一次,即可保证从长焦到短焦的变焦全程一致清晰成像,中间过程无需再调焦,且温度调焦量仅为-0.56~+0.82 mm,这验证了设计方法的正确性。采用本方法设计的变焦系统既克服了传统变焦系统在不同温度下需频繁调焦的问题,也极大减小了系统的温度调焦量,有利于快速调焦。 |
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其他语种文摘
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In view of traditional zoom lens cannot consistently and clearly image during the whole zoom process when the ambient temperature is changed, which needs to focus frequently at middle focal length position. This paper proposes a new design method which is named optical passive half-athermalization zoom lens design, and an optical passive half-athermalization zoom lens is designed by this novel method. The focal length of zoom lens is 30-1000 mm, spectrum wavelength is 486-656 nm, and F-number is F_(4.4)-F_8. Most importantly, the shortest focal length position of zoom lens is optical passive athermalization. The optical system has compact structure and excellent imaging quality, and based on method of passive half-athermalization design, optical system at any temperature between-40℃ and + 60℃,which only need to focus once at the longest focal length position of zoom lens, that can ensure consistently and clearly image during the whole zoom process. There is no need to focus frequently in any middle zoom position, and the temperature adjustment of zoom lens is only-0.56-+ 0.82 mm,which have verified method of optical passive half-athermalization zoom lens design correctly. According to this method, zoom lens not only overcomes trouble of frequently focusing in traditional zoom lens, but also greatly reduces amount of temperature focusing and benefits on fast focusing. |
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来源
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光学学报
,2022,42(4):0422001 【核心库】
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DOI
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10.3788/AOS202242.0422001
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关键词
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光学设计
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光学变焦系统
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光学被动无热化
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像面一致性
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调焦
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地址
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1.
中国科学院西安光学精密机械研究所, 陕西, 西安, 710119
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中国科学院大学, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-2239 |
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学科
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航天(宇宙航行) |
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基金
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中国科学院青年创新促进会项目
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文献收藏号
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CSCD:7168903
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