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| 光学补偿式长波红外变焦系统设计 |
| Optical design of optically compensated long wavelength infrared zoom system |
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| DOI: |
| 中文关键词: 连续变焦 光学系统 视场(FOV) 像差 通光孔径 |
| 英文关键词:continuous zoom optical system field of view(FOV) aberration aperture |
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| 中文摘要: |
| 红外连续变焦光学系统是红外热像仪的重要组成部分。介绍了一个变倍比为5×的长波连续变焦光学系统,该系统采用光学补偿的变焦方式,光学系统的F数为2、冷屏效率100%。对5个视场严格校正了像差,各个视场的MTF曲线均接近衍射极限。采用二次成像方式,使光学系统的通光孔径被约束在Ф128mm以内。该光学系统在整个变焦过程中具有较好的成像质量。 |
| 英文摘要: |
| Infrared continuous zoom optical system is one of the important part of the infrared thermal imager. A long wavelength zoom optical system with magnification of 5× is designed. The system adopts optically compensated zoom mode, and the F number is 2, the cold stop efficiency is equal to 100%. The aberrations of five FOVs are well corrected, and the MTF curves of each FOV are closed to the diffraction limited. By re imaging, the diameter of the apertures is constrained within 128mm. This system has good imaging quality during the whole zoom. |
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