非制冷型640×512面阵红外导引头光学系统设计

孙爱平; 龚杨云; 浦恩昌; 李泽民; 雷旭峰

非制冷型640×512面阵红外导引头光学系统设计

北方夜视科技研究院集团有限公司，云南昆明 650223

详细信息

作者简介:
孙爱平（1980-），男，硕士，高级工程师，研究方向：光学系统设计。E-mail：50973525@qq.com

中图分类号: TN219
计量
- 文章访问数: 325
- HTML全文浏览量: 92
- PDF下载量: 123
- 被引次数: 0
出版历程
- 收稿日期: 2019-12-11
- 修回日期: 2021-01-19
- 刊出日期: 2021-08-20

Optical System Design of Uncooled 640×512 Infrared Seeker

North Night Vision Science & Technology Research Institute Group Co. Ltd, Kunming 650223, China

摘要

摘要: 为了增大视场角、提高探测距离，本文设计了一款采用640×512面阵非制冷机芯的红外成像导引头。首先分析了红外成像导引头多种结构型式，结合本文设计要求的特点，选择了万向支架式的结构型式；其次对红外导引头光学系统进行像质优化，并对框架角及盲区的满足情况开展分析；最后以实物样机的试验情况，说明此红外成像导引头成像质量良好，能满足搜索、跟踪目标的要求。
- 导引头 /
- 红外 /
- 框架角 /
- 盲区
Abstract: In order to increase the angle of field and the detection distance, we designed an infrared imaging seeker using an 640×512 uncooled FPA. Firstly, we analyzed various structural types of infrared imaging seeker. Based on the characteristics of the design requirements, the universal support type structural type is selected. Secondly, we optimized the image quality of the infrared seeker optical system and analyzed the satisfaction of the frame angle and blind area. Finally, the test results of the real prototype show that the infrared imaging seeker has good imaging quality and can meet the requirements of searching and tracking targets.
- seeker /
- infrared /
- frame angle /
- blind area

HTML全文

图 1 基诺衍射面理想面型

Figure 1. Ideal shape of Gino diffraction surface

下载: 全尺寸图片幻灯片

图 2 基诺衍射面检测结果

Figure 2. Test results of Gino diffraction surface

下载: 全尺寸图片幻灯片

图 3 红外导引头光学系统布局型式图

Figure 3. Infrared seeker optical system layout

下载: 全尺寸图片幻灯片

图 4 在20℃工作条件下红外导引头光学系统的MTF曲线、点列图、能量包围曲线、场曲与畸变曲线

Figure 4. MTF curves, point diagram, energy enclosing curves, field curve and distortion curve of infrared seeker optical system at 20℃

下载: 全尺寸图片幻灯片

图 5 在－40℃工作条件下红外导引头光学系统的MTF曲线、点列图、能量包围曲线、场曲与畸变曲线

Figure 5. MTF curves, point diagram, energy enclosing curves, field curve and distortion curve of infrared seeker optical system at -40℃

下载: 全尺寸图片幻灯片

图 6 在60℃工作条件下红外导引头光学系统的MTF曲线、点列图、能量包围曲线、场曲与畸变曲线

Figure 6. MTF curves, point diagram, energy enclosing curves, field curve and distortion curve of infrared seeker optical system at 60℃

下载: 全尺寸图片幻灯片

图 7 框架角计算示意图

Figure 7. Schematic diagram of frame angle calculation

下载: 全尺寸图片幻灯片

图 8 导引头框架角在0°、33.1°工作时光学位置示意图

Figure 8. Optical schematic diagram when seeker frame angle is 0° and 33.1°

下载: 全尺寸图片幻灯片

图 9 红外成像导引头调试时截图

Figure 9. Screenshot of infrared imaging seeker debug

下载: 全尺寸图片幻灯片

图 10 打靶试验截图

Figure 10. Shooting test screenshot

下载: 全尺寸图片幻灯片

表 1 红外导引头光学系统设计参数

Table 1. Design parameters of optical system for infrared seeker

Focal length	50mm
Field	12.4°×9.94°
F/#	0.9
Wavelength	8-12μm
Detector type	UFPA 640×512, 17μm
Frame angle	≥-30°~+30°（Pitch） ≥-20°~+20°（Level）
Maximum blind area (target size 2.3m×2.3m)	≤50m
Stable tracking range	≥2.5km

下载: 导出CSV

表 2 红外导引头光学系统离焦量表

Table 2. Infrared seeker optical system defocus gauge

Temperature	Defocusing	Depth of focus	Remarks
-40℃	3.7μm	17.7μm	Minimum temperature
-20℃	1.9μm		-
0℃	0.5μm		-
20℃	0μm		Nominal temperature
40℃	-1.7μm		-
60℃	-2.6μm		Maximum temperature

下载: 导出CSV

表 3 零件公差表

Table 3. Part tolerance table

Parameter	Tolerance	Parameter	Tolerance
Sphere error	±3 aperture	Surface tilt	±50"
Surface irregularity	±0.7 aperture	Air thickness	±0.05 mm
Aspheric error	±7×10^-5 mm	Element tilt	0.075mm
Thickness	±0.03 mm	Element eccentricity	3.6′
Focal plane displacement compensation	±0.5 mm	-	-

下载: 导出CSV

表 4 蒙特卡罗虚拟镜头分析结果

Table 4. Analysis results of Monte Carlo virtual lens

Field
	Average			1	2	3	4	5
Nominal MTF		0.563		0.598	0.599	0.497	0.599	0.497
Optimum MTF		0.461		0.563	0.544	0.421	0.480	0.394
Worst MTF		0.217		0.224	0.222	0.190	0.251	0.198
Average MTF		0.343		0.358	0.355	0.314	0.366	0.300
Standard deviation		0.078		0.096	0.088	0.069	0.073	0.067
Compensation parameter statistics（Change of back focal plane）
Maximum			0.074
Minimum			-0.101
Nominal			0.009
Standard deviation			0.043
MTF analysis of Monte Carlo virtual lens（Nyquist frequency）
MTF of Monte Carlo virtual lens（90%）≥0.239
MTF of Monte Carlo virtual lens（80%）≥0.272
MTF of Monte Carlo virtual lens（50%）≥0.345

下载: 导出CSV

参考文献(7)

[1]	李煜, 白丕绩, 陶禹, 等. 应用于红外成像导引头的非制冷焦平面探测器[J]. 红外技术, 2016, 38(4): 280-289. http://hwjs.nvir.cn/article/id/hwjs201604002 LI Yu, BAI Piji, TAO Yu, et al. Uncooled focal plane arrays detector applied for infrared imaging seeker[J]. Infrared Technology, 2016, 38(4): 280-289. http://hwjs.nvir.cn/article/id/hwjs201604002
[2]	汤永涛, 林鸿生, 陈春. 现代导弹导引头发展综述[J]. 制导与引信, 2014, 35(1): 12-17. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDYK201401003.htm TANG Yongtao, LIN Hongsheng, CHEN Chun. The development and summary of modern missile seeker[J]. Guidance & Fuze, 2014, 35(1): 12-17. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDYK201401003.htm
[3]	姜成舟, 段萌, 潘国庆, 等. 一种小型化探测器固联于弹体式导引头光学系统设计[J]. 红外技术, 2014, 36(9): 743-747. http://hwjs.nvir.cn/article/id/hwjs201409013 JIANG Chengzhou, DUAN Meng, PAN Guoqing, et al. A miniaturized optical system design of seeker with detector fixation[J]. Infrared Technology, 2014, 36(9): 743-747. http://hwjs.nvir.cn/article/id/hwjs201409013
[4]	赵善彪, 张天孝, 李晓钟. 红外导引头综述[J]. 飞航导弹, 2006(8): 42-45. https://www.cnki.com.cn/Article/CJFDTOTAL-FHDD200608007.htm ZHAO Shanbiao, ZHANG Tianxiao, LI Xiaozhong. A summary of infrared seeker[J]. Winged Missiles Journal, 2006(8): 42-45. https://www.cnki.com.cn/Article/CJFDTOTAL-FHDD200608007.htm
[5]	刘珂, 陈宝国, 李丽娟. 空空导弹红外导引头技术发展趋势及关键技术[J]. 激光与红外, 2011, 41(10): 1117-1121. doi: 10.3969/j.issn.1001-5078.2011.10.012 LIU Ke, CHEN Baoguo, LI Lijuan. Development tendency and key technology of IR seeker for air-to-air missile[J]. Laser & Infrared, 2011, 41(10): 1117-1121. doi: 10.3969/j.issn.1001-5078.2011.10.012
[6]	Fraenkel R, Haski J, Mizrahi U, et al. Cooled and uncooled infrared detectors for missile seekers[C]//Proceedings of SPIE, 2014, 9070: 90700P.
[7]	孙爱平, 龚杨云, 朱尤攀, 等. 大孔径、大视场辅助驾驶仪红外镜头无热化设计[J]. 红外技术, 2013, 35(10): 617-622. doi: 10.11846/j.issn.1001_8891.201311008 SUN Aiping, GONG Yangyun, ZHU Youpan, et al. Optical system design of low-light-level and infrared image fusion hand-held viewer[J]. Infrared Technology, 2013, 35(11): 712-717. doi: 10.11846/j.issn.1001_8891.201311008