Thermal defocus and compensation analysis of glass-plastic hybrid fixed-focus lens

Q4 Physics and Astronomy

光学应用 Pub Date : 2023-01-01 DOI:10.5768/jao202344.0501003

CHEN Gengen, SHI Guangfeng, WU Feng, WANG Jinqiu, PEI Leigang, SHI Guoquan

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引用次数: 0

Abstract

在玻塑混合定焦安防镜头中塑胶镜片、玻璃镜片、镜框的材料性质差异较大，复杂温度环境下，镜头机械结构热变形与光学消热设计会共同影响像质。为保证镜头复杂温度环境下成像稳定，根据安防镜头−40 ℃~80 ℃的测试温度，对镜头进行光机热一体化分析。在Ansys workbench中建立镜头热结构有限元模型，计算镜头的热弹性变形;使用Zernike多项式拟合镜面的面型变化，将拟合结果导入Zemax中，判断温度载荷对像质的影响。光机热一体化分析结果表明：在极限测试温度载荷下，镜头底座的材料为聚碳酸酯混合20%玻璃纤维时，有效补偿了Zemax中模拟光学系统本身的热离焦量；镜框材料为聚碳酸酯混合30%玻璃纤维时，塑胶镜片所受挤压应变最大为2.36×10⁻³ mm；镜框材料为聚碳酸酯混合20%玻璃纤维时，塑胶镜片所受挤压应变最大为0.53×10⁻³ mm，第二种镜框材料可以使镜头像质保持稳定。最后通过对镜头高低温法兰焦距测量试验，验证了镜头的温度适应能力和光机热一体化分析的准确性。

查看原文本刊更多论文

玻璃-塑料混合定焦透镜热离焦及补偿分析

在玻塑混合定焦安防镜头中塑胶镜片、玻璃镜片、镜框的材料性质差异较大，复杂温度环境下，镜头机械结构热变形与光学消热设计会共同影响像质。为保证镜头复杂温度环境下成像稳定，根据安防镜头−40 ℃~80 ℃的测试温度，对镜头进行光机热一体化分析。在Ansys workbench中建立镜头热结构有限元模型，计算镜头的热弹性变形;使用Zernike多项式拟合镜面的面型变化，将拟合结果导入Zemax中，判断温度载荷对像质的影响。光机热一体化分析结果表明：在极限测试温度载荷下，镜头底座的材料为聚碳酸酯混合20%玻璃纤维时，有效补偿了Zemax中模拟光学系统本身的热离焦量；镜框材料为聚碳酸酯混合30%玻璃纤维时，塑胶镜片所受挤压应变最大为2.36×10−3 mm；镜框材料为聚碳酸酯混合20%玻璃纤维时，塑胶镜片所受挤压应变最大为0.53×10−3 mm，第二种镜框材料可以使镜头像质保持稳定。最后通过对镜头高低温法兰焦距测量试验，验证了镜头的温度适应能力和光机热一体化分析的准确性。

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来源期刊

光学应用 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

1.00

自引率

0.00%

发文量

5894

期刊介绍： Journal of Applied Optics was founded in 1980, and its domestic and international publication numbers are ISSN 1002-2082 and CN-61-1171/O4. The journal is a technical journal sponsored by the China Ordnance Society and the 205th Institute of China Ordnance Industry. It was included in the "China Science and Technology Core Journal" in April 2006 and in the "Chinese Core Journal" in December 2008. It is included in the journals of important international retrieval institutions such as the American Chemical Abstracts (CA), Cambridge Scientific Abstracts (CSA), Russian Abstracts Journal (AJ), British Scientific Abstracts (INSPEC), Ulrich's Periodical Directory (UIPD), and Polish Index Copernicus (IC). The purpose of the journal is to track the research trends of high-tech at home and abroad, and comprehensively reflect the development status, research level, and application of optoelectronic technology at home and abroad; focus on optoelectronic application technology, advocate scientific research, be close to readers, and be close to enterprises, and focus on reporting new theories, new technologies and new methods, new products, and development trends in the field of optoelectronic technology at home and abroad. This journal solicits research papers on engineering optics, optical information acquisition and processing, optical metrology and detection, low-light-level night vision technology, fiber optic sensing technology, infrared application technology, laser application technology, optoelectronic devices, thin film optics, optical processes and equipment, and displays.