CN204740391U - Infrared continuous zoom of medium wave - Google Patents
Infrared continuous zoom of medium wave Download PDFInfo
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- CN204740391U CN204740391U CN201520372082.2U CN201520372082U CN204740391U CN 204740391 U CN204740391 U CN 204740391U CN 201520372082 U CN201520372082 U CN 201520372082U CN 204740391 U CN204740391 U CN 204740391U
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Abstract
The utility model relates to an infrared continuous zoom of medium wave, the mechanical structure of camera lens include and zoom subassembly, focus pack and detector subassembly from the left hand right side on the bottom plate is being connected to the erection joint in proper order, zooms that the subassembly includes preceding fixed lens A, becomes times lens B, offset lens C, back fixed lens D and zoom the mechanism, and the focus pack includes secondary imaging lens E of group and focus mechanism, and the detector subassembly includes baffle switching mechanism and detector and detector frame, among the optical system of camera lens, along light from left hand right side incident direction be equipped with preceding fixed lens A in proper order, become times lens B, offset lens C, back fixed lens D, secondary imaging lens organize E, the utility model provides a performance that infrared continuous zoom of medium wave, this camera lens have high image quality, high spatial resolution, small, light in weight and resistant vibration and strike.
Description
Technical field
The utility model relates to a kind of medium wave infrared continuous zoom lens for document recording and tracking, belongs to camera lens field.
Background technology
Infrared optical system can detect, locate the infrared radiation of also tracking target object, and by means such as opto-electronic conversion, signal transacting, image procossing, converts the infrared radiation distribution image of target object to visible light video image.The wave band that conventional infrared lens covers has medium wave 3-5 μm and long wave 8-12 μm.The selectable material of infrared band is less, and medium wave 3 ~ 5 μm of common used materials have silicon, germanium, zinc selenide, zinc sulphide and chalcogenide glass etc.; A long wave 8-12 μm common used material has germanium, zinc selenide, zinc sulphide and chalcogenide glass etc.
General infrared varifocal imaging optical system is divided into continuous vari-focus and determine shelves zoom two kinds, and determining shelves zoom is main mainly with two grades or third gear zoom again.Although two grades or third gear varifocal optical system structure are simply easy to realize, in handoff procedure, likely cause objective fuzzy or loss.And infrared continuous zooming optical system can continuously change system focal length within the specific limits, while change visual field, image planes are stablized clear, the problem of track rejection can not be there is, so first target can be searched for by Large visual angle, after switch to small field of view, accurate observation target, its application demand strengthens day by day, mainly comprises forward sight investigation, sighting system, acquisition and tracking system and civilian safety-protection system etc.
Therefore, developing 54 ~ 172mm medium wave continuous magnification lens is research purpose of the present utility model.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, namely the technical problems to be solved in the utility model is to provide a kind of medium wave infrared continuous zoom lens, and this camera lens has the performance of high imaging quality, high spatial resolution, volume little, lightweight and vibration resistance and impact.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of medium wave infrared continuous zoom lens, the physical construction of described camera lens comprises variable focus package, focus pack and the detector assembly installing successively from left to right and be connected on connecting bottom board, described variable focus package comprises front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D and zoom mechanism, described focus pack comprises secondary imaging lens combination E and focusing, and described detector assembly comprises baffle plate switching mechanism and detector and detector carriage; In the optical system of described camera lens, along light from left to right incident direction be provided with front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D, secondary imaging lens combination E successively, described secondary imaging lens combination E is provided with positive lens E-1, negative lens E-2 and positive lens E-3 successively, described fixed lens A and offset lens C is positive lens, and described Zoom lens B and rear fixed lens D is negative lens.
Further, the airspace between described front fixed lens A and Zoom lens B is 23.9 ~ 36.4mm; Airspace between Zoom lens B and offset lens C is 5 ~ 27.7mm; Airspace between offset lens C and rear fixed lens D is 10 ~ 20.4mm; Airspace between rear fixed lens D and secondary imaging lens combination E is 74.5mm.
Further, the airspace between described positive lens E-1 and negative lens E-2 is 2mm; Airspace between negative lens E-2 and positive lens E-3 is 17.6mm.
Further, described zoom mechanism is provided with a precision resistor, and putting in place of described zoom mechanism, focusing and baffle plate switching mechanism controls to adopt microswitch spacing.
Further, described zoom mechanism comprises primary mirror seat, zoom assembly and compensation assembly is provided with in described primary mirror seat, before described, fixing group lens A is installed on the front end of primary mirror seat and is fixed and clamped by A sheet trim ring, described zoom group lens B is arranged in zoom assembly, described offset lens C is arranged in compensation assembly, described zoom assembly and compensation assembly to be arranged on guide rod and to be slidably matched, guide rod is fixed in primary mirror seat by guide rod pressing plate, described primary mirror seat is outside equipped with cam, described cam to be placed on primary mirror seat by steel ball and to compress with cam trim ring, form rolling bearing structure, described cam is provided with zoom curved groove and compensated curve groove, zoom curved groove is connected with compensation assembly with zoom assembly respectively by cam guide pin with compensated curve groove, described rear fixing group of lens D is placed in D sheet microscope base and is compressed by D sheet trim ring, described D sheet microscope base by screw attachment at primary mirror base rear end, described D sheet microscope base is externally connected with zoom motor rack and zoom switch frame, described zoom switch frame is provided with zoom motor and zoom potentiometer, described zoom switch frame is provided with two zoom microswitches.
Further, described focusing comprises rear microscope base, focusing guide pin, focusing ring, focusing component is provided with in described rear microscope base, described positive lens E-1 and negative lens E-2 is arranged in focusing component, described rear microscope base offers precision machined two 180 ° uniform straight troughs, described focusing ring offers precision machined 2 180 ° uniform linear skewed slots, described focusing guide pin and straight trough and linear skewed slot are slidably matched, described focusing guide pin is connected with focusing component, described focusing ring is arranged on rear microscope base by focusing ring trim ring, described positive lens E-3 to be arranged on E-3 sheet microscope base and to be compressed by E-3 sheet trim ring, described E-3 sheet microscope base is connected with rear microscope base by screw thread, described rear microscope base is externally connected with focusing motor rack and focusing switch frame, described focusing motor rack is provided with focusing motor, described focusing switch frame is provided with two focusing microswitches.
Further, described baffle plate switching mechanism comprises baffle plate, described baffle plate is fixed on apron block by baffle plate pinning, apron block lid is covered with outside described baffle plate, described baffle plate flap is fixed by screws on apron block, described detector is fixed in detector carriage by detector bracing frame and detector supporting plate, described detector carriage is fixed on apron block by screw, described apron block is connected with baffle plate motor by baffle plate motor rack, and described overhead gage both sides are all connected with baffle plate microswitch by barrier switch frame.
Compared with prior art, the utility model has following beneficial effect: (1) in optical texture, the focal power that reasonable distribution is respectively organized; In zoom group B, compensating group C and secondary imaging group E, adopt three Aspherical corrector aberrations altogether, make that camera lens reaches high imaging quality, compact conformation, zoom compensate the advantages such as stroke is short; (2) in optical design, realize temperature compensation and far and near distance compensation by E-1 and the E-2 movement simultaneously in rear secondary imaging group, ensure the request for utilization of camera lens under high temperature and low temperature environment; (3) in optical design, by optimizing and revising the cold emission picture of system, make mirror-reflection " ghost image " and cold emission " blackspot " away from detector image planes; (4) there is the functions such as electric continuous zooming heat, Power focus, detector correction mechanism and focal length be preset, the robotization controlled can be realized, under the prerequisite ensureing compact conformation, take series of measures, improve the ability of camera lens vibration resistance, impact;
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is optical system schematic diagram of the present utility model;
Fig. 2 is camera lens physical construction schematic diagram of the present utility model;
Fig. 3 is the structural perspective of the utility model camera lens;
Fig. 4 is the variable focus package structural representation of the utility model camera lens;
Fig. 5 is the cut-open view of Fig. 4;
Fig. 6 is the focus pack structural representation of the utility model camera lens;
Fig. 7 is the cut-open view of Fig. 6;
Fig. 8 is the detector assembly structural representation of the utility model camera lens.
In figure:
1-connecting bottom board, 2-variable focus package, 2-1. fixed lens A, 2-2.A sheet trim ring, 2-3. primary mirror seat, 2-4. guide rod pressing plate, the clamp ring of 2-5. zoom, 2-6. zoom trim ring, 2-7. zoom microscope base, 2-8. zoom guide pin bushing, 2-9. compensates guide pin bushing, 2-10. cam guide pin, 2-11. compensation microscope base, 2-12. compensation trim ring, 2-13. connection-bridge circle, 2-14. zoom gear, 2-15. zoom motor, 2-16. zoom motor rack, 2-17.D sheet microscope base, 2-18.D sheet trim ring, fixed lens D after 2-19., 2-20. offset lens C, 2-21. compensation Mobile base, 2-22. cam trim ring, 2-23. steel ball, 2-24. cam, 2-25. guide rod, 2-26. zoom Mobile base, 2-27. Zoom lens B, 2-28. zoom shifting block, 2-29. zoom microswitch, 2-30. zoom switch frame, 2-31. zoom potentiometer, 3-focus pack, microscope base after 3-1., 3-2. positive lens E-1, 3-3. negative lens E-2, 3-4. focusing ring, 3-5. focuses guide pin, 3-6. focusing mount I, 3-7. focusing ring trim ring, 3-8. focusing mount II, 3-9. E-3 sheet microscope base, 3-10. E-3 sheet trim ring, 3-11. positive lens E-3, 3-12. focuses trim ring II, 3-13. focuses trim ring I, 3-14. focusing spacer ring, 3-15. focusing motor rack, 3-16. focusing motor, 3-17. focusing switch frame, 3-18. focusing microswitch, 3-19. focusing shifting block, 4-detector assembly, 4-1. baffle plate flap, 4-2. apron block, 4-3. baffle plate motor rack, 4-4. baffle plate motor, 4-5. detector bracing frame I, 4-6. detector, 4-7. detector bracket, 4-8. detector supporting plate, 4-9. detector carriage, 4-10. detector bracing frame II, 4-11. baffle plate pinning, 4-12. baffle plate, 4-13. baffle plate microswitch, 4-14. barrier switch frame.
Embodiment
As shown in figures 1-8, a kind of medium wave infrared continuous zoom lens, the physical construction of described camera lens comprises variable focus package, focus pack and the detector assembly installing successively from left to right and be connected on connecting bottom board, described variable focus package comprises front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D and zoom mechanism, described focus pack comprises secondary imaging lens combination E and focusing, and described detector assembly comprises baffle plate switching mechanism and detector and detector carriage; In the optical system of described camera lens, along light from left to right incident direction be provided with front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D, secondary imaging lens combination E successively, described secondary imaging lens combination E is provided with positive lens E-1, negative lens E-2 and positive lens E-3 successively, described fixed lens A and offset lens C is positive lens, and described Zoom lens B and rear fixed lens D is negative lens.
In the present embodiment, the airspace between described front fixed lens A and Zoom lens B is 23.9 ~ 36.4mm; Airspace between Zoom lens B and offset lens C is 5 ~ 27.7mm; Airspace between offset lens C and rear fixed lens D is 10 ~ 20.4mm; Airspace between rear fixed lens D and secondary imaging lens combination E is 74.5mm.
In the present embodiment, the airspace between described positive lens E-1 and negative lens E-2 is 2mm; Airspace between negative lens E-2 and positive lens E-3 is 17.6mm.
In the present embodiment, described zoom mechanism is provided with a precision resistor, and putting in place of described zoom mechanism, focusing and baffle plate switching mechanism controls to adopt microswitch spacing.
In the present embodiment, described zoom mechanism comprises primary mirror seat, zoom assembly and compensation assembly is provided with in described primary mirror seat, described zoom group lens B and zoom trim ring, zoom microscope base, zoom retainer, zoom Mobile base, zoom guide pin bushing is assembled into zoom assembly, described offset lens C and compensation trim ring, compensate microscope base, compensate Mobile base, compensate guide pin bushing and be assembled into compensation assembly, before described, fixing group lens A is installed on the front end of primary mirror seat and is fixed and clamped by A sheet trim ring, described zoom group lens B is arranged in zoom assembly, described offset lens C is arranged in compensation assembly, described zoom assembly and compensation assembly to be arranged on guide rod and to be slidably matched, guide rod is fixed in primary mirror seat by guide rod pressing plate, described primary mirror seat is outside equipped with cam, described cam to be placed on primary mirror seat by steel ball and to compress with cam trim ring, form rolling bearing structure, described cam is provided with zoom curved groove and compensated curve groove, zoom curved groove is connected with compensation assembly with zoom assembly respectively by cam guide pin with compensated curve groove, described rear fixing group of lens D is placed in D sheet microscope base and is compressed by D sheet trim ring, described D sheet microscope base by screw attachment at primary mirror base rear end, described D sheet microscope base is externally connected with zoom motor rack and zoom switch frame, described zoom switch frame is provided with zoom motor and zoom potentiometer, described zoom switch frame is provided with two zoom microswitches.When the rotor rotational movement of zoom motor, rotated by zoom gear and connection-bridge astragal moving cam, the rotary motion of cam is converted to moving axially of zoom assembly and compensation assembly by cam guide pin again, thus realizes the consecutive variations of lens focus, complete zooming procedure.Meanwhile, described zoom driven by motor zoom potentiometer rotates, thus the resistance of zoom potentiometer is changed, and thus, forms man-to-man relation between focal length and zoom potentiometer resistance, can be realized the preparatory function of focal length by this approach sensor.
In the present embodiment, described focusing comprises rear microscope base, focusing guide pin, focusing ring, focusing component is provided with in described rear microscope base, described positive lens E-1 and negative lens E-2, focusing spacer ring 5-14, focusing trim ring I 5-13, focusing trim ring II 5-12, focusing mount I 5-6, focusing mount II 5-8 is assembled into focusing component, described positive lens E-1 and negative lens E-2 is arranged in focusing component, described rear microscope base offers precision machined two 180 ° uniform straight troughs, described focusing ring offers precision machined 2 180 ° uniform linear skewed slots, described focusing guide pin and straight trough and linear skewed slot are slidably matched, described focusing guide pin is connected with focusing component, described focusing ring is arranged on rear microscope base by focusing ring trim ring, described positive lens E-3 to be arranged on E-3 sheet microscope base and to be compressed by E-3 sheet trim ring, described E-3 sheet microscope base is connected with rear microscope base by screw thread, described rear microscope base is externally connected with focusing motor rack and focusing switch frame, described focusing motor rack is provided with focusing motor, described focusing switch frame is provided with two focusing microswitches.When the rotor rotational movement of motor of focusing, drive focusing ring to rotate, by focusing guide pin, the rotary motion of focusing ring is converted to moving axially of focusing component, thus realizes the focusing function of camera lens.
In the present embodiment, described baffle plate switching mechanism comprises baffle plate, described baffle plate is fixed on apron block by baffle plate pinning, apron block lid is covered with outside described baffle plate, play dust-proof and interception, described baffle plate flap is fixed by screws on apron block, described detector is fixed in detector carriage by detector bracing frame and detector supporting plate, described detector carriage is fixed on apron block by screw, described apron block is connected with baffle plate motor by baffle plate motor rack, and described overhead gage both sides are all connected with baffle plate microswitch by barrier switch frame.When the rotary motion of baffle plate rotor, drive baffle plate to rotate, thus play baffle plate to switching effect, realize the correction of detector.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index: (1) service band: 3.7 μm-4.8 μm; (2) focal distance f ': 54 ~ 172mm; (3) detector: medium-wave infrared refrigeration mode 320 × 256,30 μm; (4) field angle: 10.2 ° × 8.1 ° ~ 3.2 ° × 2.56 °; (5) relative aperture D/ f ': 1/2; (6) folding rear optics volume: 232mm × 90.6mm × 90.6mm(is long × wide × high).
In the present embodiment, high imaging quality, the compact at full focal length section inner optical system to be reached when optical design, therefore under guarantee optical system imaging quality prerequisite, optical facilities will be simplified as far as possible, reduce the volume of optical system.Through retrieval and the calculating of data, in order to come from the stray radiation beyond scenery radiation in suppression system, the cold stop efficiency of 100% should be adopted.For refrigeration mode infrared optical system, using the emergent pupil of the cold stop of detector as optical system, thus the cold stop efficiency of 100% should be realized.Therefore, this continuous vari-focus system adopts secondary imaging structure, while guarantee realizes 100% cold stop efficiency, can reduce the radial dimension of system.
This variable focal length optical system is made up of front fixed lens, Zoom lens, offset lens, rear fixed lens and secondary imaging lens combination 5 groups of lens.Consider the temperature sensitivity of infrared optical system, reasonably should select the material of lens, from the initial stage of optical design, reduce temperature to the impact of system.In conventional infra-red material, the refractive index temperature variation factor of Si and Ge is relatively low, and the price of Si comparatively Ge is low, proportion is less than Ge, therefore, based on the consideration of cost and weight aspect, select Si as the main material of zoom system, pancreatic system, part lens selects Ge to carry out correcting chromatic aberration.Comparing visible ray material due to infra-red material absorbs comparatively large, but refractive index is also high, so in the design, usually do not need to use too many eyeglass, otherwise the transmitance of system can be very poor, can affect final imaging effect.Take into full account processing technology factor in design, introduce aspheric surface simultaneously and carry out balanced system aberration, the structure of optical system is more simplified, image quality is better, reaches performance, cost and technique and takes into account, and realizes a good design.
Utilize optical design software, rational Optimal Parameters is set, design is optimized to the initial configuration calculated, adopt "+,-,+,-" Zoom structure form; Secondary imaging adopts "+,-,+" version.System is made up of seven lens, and each eyeglass all possesses good process, is easy to processing.First lens are front fixed lens, and second lens is Zoom lens, adopt the germanium material of high index of refraction, 3rd lens are offset lens, adopt the silicon materials of low dispersion, the 4th lens are rear fixed lens, and the 5th, six, seven lens are secondary imaging lens combination.In optical design, in order to balance difference, adopting 3 aspheric surfaces, making system picture element excellent, compact conformation.Photosystem volume is that 232 mm(are long) × 90.6mm(is wide) × 90.6mm(is high), optical weight 237g.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (7)
1. a medium wave infrared continuous zoom lens, it is characterized in that: the physical construction of described camera lens comprises variable focus package, focus pack and the detector assembly installing successively from left to right and be connected on connecting bottom board, described variable focus package comprises front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D and zoom mechanism, described focus pack comprises secondary imaging lens combination E and focusing, and described detector assembly comprises baffle plate switching mechanism and detector and detector carriage; In the optical system of described camera lens, along light from left to right incident direction be provided with front fixed lens A, Zoom lens B, offset lens C, rear fixed lens D, secondary imaging lens combination E successively, described secondary imaging lens combination E is provided with positive lens E-1, negative lens E-2 and positive lens E-3 successively, described fixed lens A and offset lens C is positive lens, and described Zoom lens B and rear fixed lens D is negative lens.
2. medium wave infrared continuous zoom lens according to claim 1, is characterized in that: the airspace between described front fixed lens A and Zoom lens B is 23.9 ~ 36.4mm; Airspace between Zoom lens B and offset lens C is 5 ~ 27.7mm; Airspace between offset lens C and rear fixed lens D is 10 ~ 20.4mm; Airspace between rear fixed lens D and secondary imaging lens combination E is 74.5mm.
3. medium wave infrared continuous zoom lens according to claim 1, is characterized in that: the airspace between described positive lens E-1 and negative lens E-2 is 2mm; Airspace between negative lens E-2 and positive lens E-3 is 17.6mm.
4. medium wave infrared continuous zoom lens according to claim 1, is characterized in that: described zoom mechanism is provided with a precision resistor, and putting in place of described zoom mechanism, focusing and baffle plate switching mechanism controls to adopt microswitch spacing.
5. medium wave infrared continuous zoom lens according to claim 4, it is characterized in that: described zoom mechanism comprises primary mirror seat, zoom assembly and compensation assembly is provided with in described primary mirror seat, before described, fixing group lens A is installed on the front end of primary mirror seat and is fixed and clamped by A sheet trim ring, described zoom group lens B is arranged in zoom assembly, described offset lens C is arranged in compensation assembly, described zoom assembly and compensation assembly to be arranged on guide rod and to be slidably matched, guide rod is fixed in primary mirror seat by guide rod pressing plate, described primary mirror seat is outside equipped with cam, described cam to be placed on primary mirror seat by steel ball and to compress with cam trim ring, form rolling bearing structure, described cam is provided with zoom curved groove and compensated curve groove, zoom curved groove is connected with compensation assembly with zoom assembly respectively by cam guide pin with compensated curve groove, described rear fixing group of lens D is placed in D sheet microscope base and is compressed by D sheet trim ring, described D sheet microscope base by screw attachment at primary mirror base rear end, described D sheet microscope base is externally connected with zoom motor rack and zoom switch frame, described zoom switch frame is provided with zoom motor and zoom potentiometer, described zoom switch frame is provided with two zoom microswitches.
6. medium wave infrared continuous zoom lens according to claim 4, it is characterized in that: described focusing comprises rear microscope base, focusing guide pin, focusing ring, focusing component is provided with in described rear microscope base, described positive lens E-1 and negative lens E-2 is arranged in focusing component, described rear microscope base offers precision machined two 180 ° uniform straight troughs, described focusing ring offers precision machined 2 180 ° uniform linear skewed slots, described focusing guide pin and straight trough and linear skewed slot are slidably matched, described focusing guide pin is connected with focusing component, described focusing ring is arranged on rear microscope base by focusing ring trim ring, described positive lens E-3 to be arranged on E-3 sheet microscope base and to be compressed by E-3 sheet trim ring, described E-3 sheet microscope base is connected with rear microscope base by screw thread, described rear microscope base is externally connected with focusing motor rack and focusing switch frame, described focusing motor rack is provided with focusing motor, described focusing switch frame is provided with two focusing microswitches.
7. medium wave infrared continuous zoom lens according to claim 4, it is characterized in that: described baffle plate switching mechanism comprises baffle plate, described baffle plate is fixed on apron block by baffle plate pinning, apron block lid is covered with outside described baffle plate, described baffle plate flap is fixed by screws on apron block, described detector is fixed in detector carriage by detector bracing frame and detector supporting plate, described detector carriage is fixed on apron block by screw, described apron block is connected with baffle plate motor by baffle plate motor rack, described overhead gage both sides are all connected with baffle plate microswitch by barrier switch frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520372082.2U CN204740391U (en) | 2015-06-03 | 2015-06-03 | Infrared continuous zoom of medium wave |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520372082.2U CN204740391U (en) | 2015-06-03 | 2015-06-03 | Infrared continuous zoom of medium wave |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849834A (en) * | 2015-06-03 | 2015-08-19 | 福建福光数码科技有限公司 | Medium-wave infrared continuous zooming camera shot and control method thereof |
| CN105824099A (en) * | 2016-06-03 | 2016-08-03 | 浙江兆晟科技股份有限公司 | Infrared imaging rapid and automatic focusing method and system based on position memory |
| CN107991763A (en) * | 2018-01-16 | 2018-05-04 | 山东神戎电子股份有限公司 | A kind of high definition long-focus LONG WAVE INFRARED camera lens |
-
2015
- 2015-06-03 CN CN201520372082.2U patent/CN204740391U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849834A (en) * | 2015-06-03 | 2015-08-19 | 福建福光数码科技有限公司 | Medium-wave infrared continuous zooming camera shot and control method thereof |
| CN105824099A (en) * | 2016-06-03 | 2016-08-03 | 浙江兆晟科技股份有限公司 | Infrared imaging rapid and automatic focusing method and system based on position memory |
| CN107991763A (en) * | 2018-01-16 | 2018-05-04 | 山东神戎电子股份有限公司 | A kind of high definition long-focus LONG WAVE INFRARED camera lens |
| CN107991763B (en) * | 2018-01-16 | 2020-08-11 | 山东神戎电子股份有限公司 | High-definition long-focus long-wave infrared lens |
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