CN104570346A - Long-wave infrared optical imaging system for image stabilization indirectly based on image spaces - Google Patents
Long-wave infrared optical imaging system for image stabilization indirectly based on image spaces Download PDFInfo
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- CN104570346A CN104570346A CN201510069394.0A CN201510069394A CN104570346A CN 104570346 A CN104570346 A CN 104570346A CN 201510069394 A CN201510069394 A CN 201510069394A CN 104570346 A CN104570346 A CN 104570346A
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
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Abstract
The invention discloses a long-wave infrared optical imaging system for image stabilization indirectly based on image spaces, which belongs to the field of optical guidance. For solving the problem that an existing three-axis stabilization platform for tracking and image stabilization is large in volume, so that the platform can not satisfy the requirements of a supersonic-speed seeker system on window miniaturization, the system is provided with a telescopic optical lens group, an oscillating mirror, an imaging optical lens group and a detector which are sequentially arranged along the light path propagation direction, wherein the telescopic optical lens group is intersected with an optical axis of the imaging optical lens group, the intersected parts are subjected to light path butt-joint by the oscillating mirror, the oscillating mirror oscillates in heading and pitching directions under the driving of a rotating mechanism, so that light beams in the field range of the telescopic optical lens group are reflected to the imaging optical lens group, and then converged to the detector by the imaging optical lens group so as to generate an infrared image. According to the long-wave infrared optical imaging system provided by the invention, the large-field searching and small-field tracking functions of the system on a target can be achieved while the miniaturization of the system is satisfied.
Description
Technical field
The invention belongs to optical guidance technical field, relate to a kind of LONG WAVE INFRARED optical imaging system, be specifically related to a kind of LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space.
Background technology
Infrared imaging guidance system is the important component part of supersonic speed target seeker, and having the advantages such as guidance precision is high, antijamming capability strong, all weather operations, is the primary study object of world military developments.The supersonic speed target seeker of miniaturization is conducive to the maneuverability improving guided weapon, increases the useful load of bullet, strengthens the lethality of weapon, has vital role to the development of future military war.Therefore, while ensureing infrared imaging guidance system compact, how to realize function that the search of this system Large visual angle and small field of view follow the tracks of become one of emphasis that current guided weapon develops.
As shown in Figure 1, three traditional axle servo-stabilization systems comprise roll framework 1, pitching frame 2, orientation framework 3 and thermal infrared imager 4, and wherein roll framework 1 is arranged on pedestal along Z-direction, rotates around Z axis; Pitching frame 2 is arranged on roll framework 1 along X-axis, rotates around X-axis; Orientation framework 3 is arranged on pitching frame 2 along Y-axis, rotates around Y-axis, and they are driven by a brushless dc torque motor respectively and rotate.But three frameworks are extension overlaying structure, and are rotation device, this makes three-axle steady platform system bulk comparatively large, is difficult to install and use in the supersonic speed target seeker system requiring window miniaturization.CN103760670A discloses a kind of large field of view scan infrared optical system containing reflective spatial light modulator, this system by double cubic surface correction plate, achromatism rotate Leix Lay prism to, Amici prism, reflective spatial light modulator etc. to be arranged in order along optical axis and to form, wherein achromatism rotates Leix Lay prism to carrying out visual field scanning on a large scale, thus realizes searching for the Large visual angle of target; Amici prism can be turned back to light path, thus can reduce optical system volume.But achromatism rotates Leix Lay prism to being utilize to rotate to realize large field of view scan search, it cannot according to finding that the position of target adjusts its course and luffing angle, to make target be positioned at imaging viewing field center all the time, therefore small field of view scope trace cannot be carried out to target.So, how to realize while meeting system compact system Large visual angle search and small field of view tracking become one of difficult point of infrared imaging guidance systematic study.
Summary of the invention
For existing for follow the tracks of and the three-axle steady platform volume of steady picture larger, supersonic speed target seeker system cannot be met to the requirement of window miniaturization, the invention provides a kind of LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space, while meeting system compact, the function that Large visual angle search and the small field of view of system to target are followed the tracks of can be realized.
The object of the invention is to be achieved through the following technical solutions:
Based on a LONG WAVE INFRARED optical imaging system for the indirect steady picture of image space, be disposed with optical frames group of looking in the distance, pendulum mirror, optical imaging lens group and detector along paths direction; Described optical frames group of looking in the distance is crossing with the optical axis of optical imaging lens group, light path docking is carried out by pendulum mirror in centre, pendulum mirror under the drive of rotating mechanism in course, pitching both direction swings, by the beam reflection of looking in the distance in optical frames group field range to optical imaging lens group, converge on detector through optical imaging lens group and generate infrared image.
Existing for follow the tracks of and the three-axle steady platform volume of steady picture comparatively large, the requirement of target seeker system to window miniaturization cannot be met.Compared to existing for following the tracks of and the three-axle steady platform of steady picture, the present invention has following beneficial effect:
(1) optical frames group far away is crossing with the optical axis of optical imaging lens group and have certain angle, and light path docking is carried out by putting mirror in centre, can meet the requirement of system compact like this;
(2) put mirror to swing in course and pitch orientation, realize searching for the large field of view scan of target; Then under the control of servo-control system, constantly adjust its course and luffing angle according to body attitude after finding target, with the field of view center making target be positioned at optical imaging lens group all the time, thus realize the small field of view following function to target.
(3) optical imaging lens group adopts secondary imaging light channel structure, and adds catoptron folded optical path in the optical path, meets miniaturization to make system physical dimension.
Accompanying drawing explanation
Fig. 1 is traditional servo-stabilization system construction drawing;
Fig. 2 is the structural drawing of LONG WAVE INFRARED optical imaging system;
Fig. 3 is the light path principle figure of LONG WAVE INFRARED optical imaging system;
Fig. 4 is the visual field comparison diagram of optical frames group and optical imaging lens group of looking in the distance.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but be not limited thereto; everyly technical solution of the present invention modified or equivalent to replace, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
LONG WAVE INFRARED optical imaging system is the important component part of supersonic speed target seeker, and its structure as shown in Figure 2, is made up of window 5, optical frames group 6 of looking in the distance, pendulum mirror 7, optical imaging lens group 8 and detector 9.Optical frames group of looking in the distance 6 and optical imaging lens group 8 opposite windows 5 position remain unchanged, and their optical axis intersects and angle is 104 °, middlely carry out light path docking by pendulum mirror 7, thus can meet the requirement of system compact.
Optical frames group 6 of looking in the distance comprises first surface catoptron 15, second curved reflector 16 and telescope group 14, and wherein telescope group 14 is made up of the first lens 14-1, the second lens 14-2, the 3rd lens 14-3 and the 4th lens 14-4.Optical frames group 6 of looking in the distance is large visual field optical systems, and its visual field is 26.25 ° × 28 ° (course × pitching), covers tracking field of view scope.Optical frames group of looking in the distance 6 is a telescopic system, and the light beam received within the scope of tracking field of view can be projected pendulum mirror 7 position with directional light form by it.The entrance pupil of optical frames group 6 of looking in the distance, near window 5, so not only can reduce the size of window 5, also can not produce light and block.
Optical imaging lens group 8 comprises the first imaging lens group 10, catoptron 11 and the second imaging lens group 12, wherein the first imaging lens group 10 is made up of the 5th lens 10-1 and the 6th lens 10-2, and the second imaging lens group 12 is made up of the 7th lens 12-1, the 8th lens 12-2 and the 9th lens 12-3; Optical imaging lens group 8 adopts the light channel structure of secondary imaging, and adds catoptron in the optical path and deflect to make light path, thus the system physical dimension of making meets the requirement of miniaturization.Optical imaging lens group 8 is small field of view optical system, and its visual field is 6.25 ° × 5 ° (course × pitching).It completes the scanning search of isologue optical frames group 6 far away Large visual angle by the two-dimensional wiggle putting mirror 7, then carries out small field of view to target and follow the tracks of imaging after finding target.
Pendulum mirror 7 is being looked in the distance between optical frames group 6 and optical imaging lens group 8, its anglec of rotation of azimuth direction and pitch orientation be respectively ± 5 ° and ± 12 °.The mounting means of pendulum mirror 7 is 52 ° for putting mirror reflecting surface normal with optical frames group 6 optical axis angle on direction, course of looking in the distance, and pitch orientation angle is 0 °, can meet the requirement of system compact like this.The emergent pupil of optical frames group 6 of looking in the distance and the entrance pupil of optical imaging lens group 8 should be coupling in puts mirror 7 position, so not only can meet the requirement of pendulum mirror physical dimension miniaturization, can also avoid putting mirror 7 and swing the image quality impact brought.Pendulum mirror 7 under the drive of rotating mechanism can in course, pitching both direction swings, thus by the beam reflection of looking in the distance in optical frames group 6 field range to optical imaging lens group 8, realize following the tracks of the Large visual angle search of target and small field of view.
As shown in Figure 3, the course of work of LONG WAVE INFRARED optical imaging system is:
Optical frames group 6 of looking in the distance receives the light beam that in object space field range, scenery sends.Being visible optical frames group 6 inner light beam far away successively by entering telescope group 14 after the continuous reflection of first surface catoptron 15 and the second curved reflector 16, after telescope group 14 collimates, projecting pendulum mirror 7 position with directional light form.Pendulum mirror 7 by the beam reflection of looking in the distance in optical frames group 6 visual field to optical imaging lens group 8.Be incident on catoptron 11 after the transmission of optical imaging lens group 8 inner light beam by the first imaging lens group 10, this catoptron 11 can make the light beam generation optical path-deflecting entered in optical imaging lens group 8, meets the requirement of system compact with this.Light beam after deflection generates infrared image by finally converging on detector photosurface 13 after the second imaging lens group 12 again, thus the Large visual angle search realized target and small field of view following function.
In the above-mentioned course of work, because optical frames group visual field 17 of looking in the distance belongs to Large visual angle (26.25 ° × 28 °) optical system, optical imaging lens group visual field 18 belongs to small field of view (6.25 ° × 5 °) optical system, this causes the visual field of optical imaging lens group to be full of looking in the distance the whole visual field of optical frames group, as shown in Figure 4.Therefore, in order to realize searching for the Large visual angle of target, pendulum mirror 7 should in course, pitching both direction swings, thus by the beam reflection of looking in the distance in the different visual field of optical frames group 6 to optical imaging lens group 8.Find to put after target 7, mirror and constantly adjust its angle of inclination on course and pitch orientation according to body attitude under the control of servo-control system, with the field of view center making target be positioned at optical imaging lens group all the time, thus realize following the tracks of the small field of view of target.
Claims (7)
1., based on a LONG WAVE INFRARED optical imaging system for the indirect steady picture of image space, it is characterized in that described system is disposed with optical frames group of looking in the distance, pendulum mirror, optical imaging lens group and detector along paths direction; Described optical frames group of looking in the distance is crossing with the optical axis of optical imaging lens group, light path docking is carried out by pendulum mirror in centre, pendulum mirror under the drive of rotating mechanism in course, pitching both direction swings, by the beam reflection of looking in the distance in optical frames group field range to optical imaging lens group, converge on detector through optical imaging lens group and generate infrared image.
2. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1, the optical axis included angle of look in the distance described in it is characterized in that optical frames group and optical imaging lens group is 104 °.
3. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1, the emergent pupil of optical frames group of looking in the distance described in it is characterized in that and the entrance pupil of optical imaging lens group should be coupling in puts mirror position.
4. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1,2 or 3, the visual field of optical frames group of looking in the distance described in it is characterized in that is 26.25 ° × 28 °.
5. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1,2 or 3, is characterized in that the visual field of described optical imaging lens group is 6.25 ° × 5 °.
6. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1 or 3, it is characterized in that described pendulum mirror the anglec of rotation of course and pitch orientation be respectively ± 5 ° and ± 12 °.
7. the LONG WAVE INFRARED optical imaging system based on the indirect steady picture of image space according to claim 1 or 3, it is characterized in that the mounting means of described pendulum mirror is 52 ° for putting mirror reflecting surface normal with optical frames group optical axis angle on direction, course of looking in the distance, pitch orientation angle is 0 °.
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Cited By (9)
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| CN106488149A (en) * | 2016-09-30 | 2017-03-08 | 哈尔滨工业大学 | A kind of image enhaucament optical system integrating steady picture based on image space scanner uni |
| CN109254392A (en) * | 2018-08-22 | 2019-01-22 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| CN109406112A (en) * | 2017-08-17 | 2019-03-01 | 北京遥感设备研究所 | A kind of head-shield optics side window light transmission ratio-dependent method |
| CN111998801A (en) * | 2020-08-19 | 2020-11-27 | 哈尔滨新光光电科技股份有限公司 | Roll pendulum formula two-dimensional imaging mechanism |
| CN112068217A (en) * | 2020-09-30 | 2020-12-11 | 西安雷华测控技术有限公司 | Day and night detector for aircraft |
| CN112505916A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨新光光电科技股份有限公司 | Image space scanning optical system based on curved surface prism |
| CN112596229A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Large-caliber off-axis transmitting telescope optical system for directional transmitting equipment |
| CN113783626A (en) * | 2021-08-24 | 2021-12-10 | 长春理工大学 | Communication receiving optical system of unmanned aerial vehicle laser communication device |
| CN118192035A (en) * | 2024-05-13 | 2024-06-14 | 长春通视光电技术股份有限公司 | Airborne dual-band common-aperture photoelectric load and imaging method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106488149A (en) * | 2016-09-30 | 2017-03-08 | 哈尔滨工业大学 | A kind of image enhaucament optical system integrating steady picture based on image space scanner uni |
| CN109406112A (en) * | 2017-08-17 | 2019-03-01 | 北京遥感设备研究所 | A kind of head-shield optics side window light transmission ratio-dependent method |
| CN109406112B (en) * | 2017-08-17 | 2020-08-18 | 北京遥感设备研究所 | Method for determining light transmission proportion of optical side window of hood |
| CN109254392A (en) * | 2018-08-22 | 2019-01-22 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| CN109254392B (en) * | 2018-08-22 | 2019-06-14 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| CN111998801B (en) * | 2020-08-19 | 2021-10-19 | 哈尔滨新光光电科技股份有限公司 | Roll pendulum formula two-dimensional imaging mechanism |
| CN111998801A (en) * | 2020-08-19 | 2020-11-27 | 哈尔滨新光光电科技股份有限公司 | Roll pendulum formula two-dimensional imaging mechanism |
| CN112068217A (en) * | 2020-09-30 | 2020-12-11 | 西安雷华测控技术有限公司 | Day and night detector for aircraft |
| CN112505916A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨新光光电科技股份有限公司 | Image space scanning optical system based on curved surface prism |
| CN112596229A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Large-caliber off-axis transmitting telescope optical system for directional transmitting equipment |
| CN113783626A (en) * | 2021-08-24 | 2021-12-10 | 长春理工大学 | Communication receiving optical system of unmanned aerial vehicle laser communication device |
| CN118192035A (en) * | 2024-05-13 | 2024-06-14 | 长春通视光电技术股份有限公司 | Airborne dual-band common-aperture photoelectric load and imaging method |
| CN118192035B (en) * | 2024-05-13 | 2024-07-09 | 长春通视光电技术股份有限公司 | Airborne dual-band common-aperture photoelectric load and imaging method |
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Application publication date: 20150429 |