Laser & Optoelectronics Progress, Volume. 56, Issue 19, 190801(2019)
Medium Wave Infrared Optical System Based on Three Group Linkage Continuous Zoom
Figures & Tables(10)
Fig. 2. Zoom and compensation diagram of three group linkage continuous zoom MWIR optical system
Fig. 4. Three-dimensional fold plot of three group linkage continuous zoom MWIR optical system. (a) Front view; (b) slide view
Fig. 5. Spot diagrams of the optical system. (a) NFOV; (b) the first MFOV; (c) the second MFOV; (d) the third MFOV; (e) the fourth MFOV; (f) WFOV
Fig. 6. MTF curves of the optical system. (a) NFOV; (b) the first MFOV; (c) the second MFOV; (d) the third MFOV; (e) the fourth MFOV; (f) WFOV
Fig. 7. Distortion curves of the optical system. (a) NFOV; (b) the first MFOV; (c) the second MFOV; (d) the third MFOV; (e) the fourth MFOV; (f) WFOV
Table 1. Parameters of optical system
View tableTable 1. Parameters of optical system
Item Value Waveband /μm 3.6-4.9 Field of view continuous zoom: 45.1°×36.1° - 0.56°×0.45°; wide field of view (WFOV): 45.1°×36.1°; narrow field of view (NFOV): 0.56°×0.45° F number5.5 Detector Medium wave infrared: 640×512 FPA detector: pitch of 15 μm×15 μm Envelope 335 mm×126 mm (local diameter of 180 mm)× 120 mm(local diameter of 180 mm)
Table 2. Design results of optical system
View tableTable 2. Design results of optical system
Surface Type Radius /mm Thickness /mm Glass 1 Standard 218.49 14.27 Silicon 2 Standard 334.24 154.11/151.17/145.98/136.91/108.29/56.50* 3 Standard -318 4.50 Germanium 4 Evenasph 148.56 7.12/10.07/15.25/24.32/52.94/104.74* 5 Standard 147.06 9.11 Silicon 6 Standard -436.23 100.41/96.53/87.22/72.03/42.71/20.73* 7 Standard 164.26 7.51 Silicon 8 Evenasph 36.70 22.11/25.54/34.855/50.04/79.36/101.35* 9 Standard Infinity 20/32.73/37.59/43.3/49.77/52.402* Mirror 10 Standard 98.20 3 Zns_broad 11 Evenasph 65.64 1 12 Standard 63.61 4.66 Silicon 13 Standard 213.40 49.50/37.21/32.355/26.65/20.17/17.54* 14 Standard Infinity 30 Mirror 15 Standard Infinity 32.78 Mirror 16 Standard 105.71 7.5 Zns_broad 17 Evenasph 17.75 1 18 Standard 19.36 4 Silicon 19 Standard -1806.63 13 20 stop Infinity 20
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Hongxing He. Medium Wave Infrared Optical System Based on Three Group Linkage Continuous Zoom[J]. Laser & Optoelectronics Progress, 2019, 56(19): 190801
Paper Information
Category: Geometric Optics
Received: Mar. 11, 2019
Accepted: Apr. 22, 2019
Published Online: Oct. 12, 2019
The Author Email: He Hongxing (hxhe2000@163.com)
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