CN114690361B - Medium wave capturing and tracking system - Google Patents
Medium wave capturing and tracking system Download PDFInfo
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- CN114690361B CN114690361B CN202111654699.XA CN202111654699A CN114690361B CN 114690361 B CN114690361 B CN 114690361B CN 202111654699 A CN202111654699 A CN 202111654699A CN 114690361 B CN114690361 B CN 114690361B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/008—Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The utility model relates to a medium wave capturing and tracking system, which is characterized in that: the system is sequentially provided with an optical cabin, a mechanical cabin and an electronic cabin from left to right along the light incidence direction, a transition plate is arranged below the mechanical cabin, the optical cabin is formed by an integral sealed lens barrel, and a main lens group optical system of the lens barrel sequentially comprises a meniscus positive lens A, a meniscus negative lens B, a meniscus negative lens C, a meniscus positive lens D, a biconcave negative lens E and a biconvex positive lens F along the object plane to the image plane; a detector adjusting assembly is arranged in the mechanical cabin, a driver and a circuit board of the system are arranged in the electronic cabin, and the detector adjusting assembly comprises an infrared detector which can move along the optical axis direction; the phase difference brought by high and low temperatures is compensated by adjusting the position of the target surface of the detector, the whole lens machine is connected with the four-way platform through a transition mechanism, and the transition mechanism has a two-dimensional inclination adjustment function, so that the real adjustment realizes the parallel adjustment of the optical machine and the main optical system on the same axis.
Description
Technical field:
the utility model relates to an infrared capturing system of medium waves, and belongs to the technical field of photoelectricity.
The background technology is as follows:
the medium wave infrared capturing system is a fixed focus infrared system applied to the sea medium waves, has good three-proofing property, and the current fixed focus lens mainly realizes the adjustment of focal length by adjusting the interval of lenses so as to compensate the change of high and low temperature phase surfaces, and if the fixed focus lens is applied to a place with a slightly severe environment, the internal corrosion of the lens can be caused; and if the sealing measures are taken, the whole machine size is necessarily increased in consideration of the wiring of electronic components, and the interchangeability is not facilitated.
The utility model comprises the following steps:
the utility model aims to provide a medium wave capturing and tracking system for a severe marine environment, which realizes focusing by adjusting the position of a detector, so that optics and machinery are separated, the tightness of an optical cabin and the interchangeability and the adjustability of a mechanical cabin are ensured, the reliability is high, the structure is compact, and the cost is low.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the wave capturing and tracking system is characterized in that: the system is sequentially provided with an optical cabin, a mechanical cabin and an electronic cabin from left to right along the light incidence direction, a transition plate is arranged below the mechanical cabin, the optical cabin is formed by an integral sealed lens barrel, and a main lens group optical system of the lens barrel sequentially comprises a meniscus positive lens A, a meniscus negative lens B, a meniscus negative lens C, a meniscus positive lens D, a biconcave negative lens E and a biconvex positive lens F along the object plane to the image plane; the mechanical cabin is internally provided with a detector adjusting assembly, a driver and a circuit board of the system are arranged in the electronic cabin, the detector adjusting assembly comprises an infrared detector which can move along the optical axis direction, and an imaging surface serving as an optical system, namely a detector target surface, is arranged on the infrared detector.
Further, specific parameters of the light system are as follows:
(1) Focal length: 400mm;
(2) F number: 2.0;
(3) The detector comprises: refrigeration 640x512, 15um;
(4) Working spectral range: 3.7-4.8 um.
Further, the optical parameter table of the main lens group:
| surface serial number | Radius of curvature (mm) | Interval (mm) | Material | Remarks |
| S1 | 209.64 | 19 | Silicon (Si) | |
| S2 | 344.03 | 2.9 | ||
| S3 | 358.48 | 15 | Germanium (Ge) | |
| S4 | 263.93 | 210 | ||
| S5 | 95.95 | 7.5 | Germanium (Ge) | Aspherical surface |
| S6 | 83.29 | 162 | Aspherical surface | |
| S7 | 35.94 | 6.5 | Silicon (Si) | Aspherical surface |
| S8 | 682.30 | 2.8 | ||
| S9 | -68.56 | 2.8 | Germanium (Ge) | Aspherical surface |
| S10 | 71.51 | 18 | ||
| S11 | 67.91 | 4.8 | Silicon (Si) | Aspherical surface |
| S12 | -160.38 | Aspherical surface |
Aspheric related data
| α 4 | α 5 | α 1 | α 10 | |
| Aspherical surface S5 | -9.6136E-008 | -4.1923E-011 | -2.3605E-014 | 4.1401E-018 |
| Aspherical surface S6 | -7.4292E-009 | -2.8486E-011 | -3.9223E-014 | 1.1162E-017 |
| Aspherical surface S7 | -6.3137E-006 | -4.7995E-009 | -2.2737E-011 | 7.7074E-014 |
| Aspherical surface S9 | 1.8794E-005 | -1.7138E-008 | -1.9188E-011 | 4.8974E-015 |
| Aspherical surface S11 | -5.3992E-006 | -6.6046E-010 | -1.3862E-011 | 1.7323E-014 |
| Aspherical surface S12 | -9.9102E-008 | -4.0519E-009 | -9.4842E-012 | 1.2249E-014 |
The aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient, α 4 、α 6 、α 8 、α 10 … the aspherical coefficients. In the aspherical data, E-n represents ". Times.10" -n ", e.g. 3.0451E-005, represents 3.0451X 10 -5 。
Further, a front protection sheet and a rear protection sheet which are respectively positioned in front of and behind the main lens group are also arranged in the lens cone; the damping piece switching group comprises a motor frame, a damping piece driving motor fixed on the motor frame, a gear fixed on an output shaft of the damping piece driving motor, and a damping piece rotary table with a handle, which is meshed with the gear and is driven, wherein two rotary stations coaxial with the main lens group are arranged on the damping piece rotary table with the handle, different damping pieces are respectively arranged on the two rotary stations, when the damping piece is required to be switched, the damping piece driving motor rotates, the damping piece rotary table is driven to rotate through the gear meshing to realize the switching work of the damping piece, when the rotary table moves to a required stroke, the photoelectric switch potential is changed by a baffle piece on the rotary table, the control board controls the damping piece driving motor to be powered off, and the damping piece driving motor stops rotating.
Further, still be equipped with the guide rail in the above-mentioned machinery space, install the detector mounting panel on the guide rail, infrared detector installs on the detector mounting panel, is equipped with the linear stepping motor who drives the detector mounting panel and remove along the optical axis direction at the machinery space, and when temperature variation, linear stepping motor drives infrared detector optical axis back and forth movement to through the change of adjustment detector target surface position to the focus that adaptation temperature leads to.
Further, the four sides of the mechanical cabin and the electronic cabin are provided with skin cover plates.
Furthermore, the sealing of the optical cabin adopts nitrogen filling sealing.
The utility model realizes focusing by adjusting the movement of the imaging surface (namely the detector target surface) serving as an optical system in the optical axis direction, thereby overcoming the change of the focal length of the main lens group caused by temperature, and the electronic components can be arranged in the electronic cabin by adjusting the detector and the detector target surface on the detector, thereby realizing the separation of the electronic cabin and the optical cabin, avoiding the need of penetrating wire holes and the like in the optical cabin, and ensuring the tightness of the optical cabin.
Description of the drawings:
FIG. 1 is a cross-sectional view of the complete machine of the present utility model;
FIG. 2 is a block diagram of a primary lens assembly of the present utility model;
FIG. 3 is a side view of the attenuation sheet switch set of this utility model;
FIG. 4 is a schematic perspective view of a detector adjustment assembly of the present utility model;
FIG. 5 is a schematic view of the installation of FIG. 4;
FIG. 6 is a perspective view of the exterior of the present utility model;
FIG. 7 is a perspective view of FIG. 3;
in the figure: 1-1, an optical cabin; 1-2, a mechanical cabin; 1-3, an electronic cabin; 1-4, a transition plate; 2-1, an attenuation sheet motor frame; 2-2, an attenuation sheet motor; 2-3, gears; 2-4, an attenuation sheet rotating disc; 2-5, a photoelectric switch; 2-6, an attenuation sheet; 3-1, a linear stepping motor; 3-2, a detector mounting plate; 3-3, a guide rail; 3-4, a linear potentiometer; 3-5, a photoelectric switch; 3-6, an infrared detector; 4-2, adjusting blocks; 4-3, a mechanical cabin box body; 4-4, positioning balls.
The specific embodiment is as follows:
as shown in fig. 1, in this embodiment, an optical cabin 1-1, a mechanical cabin 1-2 and an electronic cabin 1-3 are sequentially arranged in the light system of the device of the present utility model from left to right along the light incidence direction; the transition plates 1-4 are arranged below the mechanical cabin, nitrogen is filled in the optical cabin for sealing, meanwhile, a replaceable drying agent box is arranged between the mechanical cabin and the electronic cabin, sealing rings are additionally arranged between the connection of the cabin bodies, so that the situation that the external air flow enters the cabins to cause wet corrosion is avoided, white fluorocarbon paint is sprayed on the outer surfaces, and the corrosion of marine environment is prevented.
The mechanical cabin 1-2 is internally provided with a detector adjusting component, a driver and a circuit board of the system are arranged in the electronic cabin, the detector adjusting component comprises an infrared detector 3-6 which can move along the optical axis direction, and an imaging surface IMA serving as an optical system, namely a detector target surface, is arranged on the infrared detector.
The utility model realizes focusing by adjusting the movement of the imaging surface (namely the detector target surface) serving as an optical system in the optical axis direction, thereby overcoming the change of the focal length of the main lens group caused by temperature, and the electronic components can be arranged in the electronic cabin by adjusting the detector and the detector target surface on the detector, thereby realizing the separation of the electronic cabin and the optical cabin, avoiding the need of penetrating wire holes and the like in the optical cabin, and ensuring the tightness of the optical cabin.
As shown in fig. 2, the main lens group of the light system adopts a secondary imaging structure, the main lens group optical system of the lens barrel sequentially comprises a meniscus positive lens A, a meniscus negative lens B, a meniscus negative lens C, a meniscus positive lens D, a biconcave negative lens E and a biconvex positive lens F along the object plane to the image plane, the optical power is reasonably distributed, and the even aspheric surface is combined to balance the system aberration, so that the whole volume of the optical system is small enough, the YNI value of cold reflection light on each refractive surface is improved by changing the curvature of the lens or changing the interval, so that defocusing is generated when the cold light returns to the detector, and the cold reflection intensity is reduced because of being blocked by cold light stop and other apertures; the sensitivity of each optical piece is reduced through the adjustment of curvature and thickness, so that the lens is easier to process and adjust.
The specific parameters of the light system of the utility model are as follows:
(5) Focal length: 400mm
(6) F number: 2.0
(7) The detector comprises: refrigeration 640x512, 15um
(8) Working spectral range: 3.7 to 4.8um
The data of the following table show the optical parameters of the primary lens group of the present utility model
Table one: optical element parameter meter
| Surface serial number | Radius of curvature (mm) | Interval (mm) | Material | Remarks |
| S1 | 209.64 | 19 | Silicon (Si) | |
| S2 | 344.03 | 2.9 | ||
| S3 | 358.48 | 15 | Germanium (Ge) | |
| S4 | 263.93 | 210 | ||
| S5 | 95.95 | 7.5 | Germanium (Ge) | Aspherical surface |
| S6 | 83.29 | 162 | Aspherical surface | |
| S7 | 35.94 | 6.5 | Silicon (Si) | Aspherical surface |
| S8 | 682.30 | 2.8 | ||
| S9 | -68.56 | 2.8 | Germanium (Ge) | Aspherical surface |
| S10 | 71.51 | 18 | ||
| S11 | 67.91 | 4.8 | Silicon (Si) | Aspherical surface |
| S12 | -160.38 | Aspherical surface |
And (II) table: aspheric related data
| α 4 | α 1 | α 1 | α 10 | |
| Aspherical surface S5 | -9.6136E-008 | -4.1923E-011 | -2.3605E-014 | 4.1401E-018 |
| Aspherical surface S6 | -7.4292E-009 | -2.8486E-011 | -3.9223E-014 | 1.1162E-017 |
| Aspherical surface S7 | -6.3137E-006 | -4.7995E-009 | -2.2737E-011 | 7.7074E-014 |
| Aspherical surface S9 | 1.8794E-005 | -1.7138E-008 | -1.9188E-011 | 4.8974E-015 |
| Aspherical surface S11 | -5.3992E-006 | -6.6046E-010 | -1.3862E-011 | 1.7323E-014 |
| Aspherical surface S12 | -9.9102E-008 | -4.0519E-009 | -9.4842E-012 | 1.2249E-014 |
The aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient, α 4 、α 6 、α 8 、α 10 … the aspherical coefficients. In the aspherical data, E-n represents ". Times.10" -n ", e.g. 3.0451E-005, represents 3.0451X 10 -5 。
As shown in fig. 3, the lens barrel is also provided with a front protection sheet and a rear protection sheet which are respectively positioned in front of and behind the main lens group; the damping piece switching group comprises a motor frame 2-1, a damping piece driving motor 2-2 fixed on the motor frame, a gear 2-3 fixed on an output shaft of the damping piece driving motor, and a damping piece rotary table 2-4 with a handle and meshed with the gear for transmission, wherein two rotary stations coaxial with the main lens group are arranged on the damping piece rotary table with the handle, different damping pieces 2-6 are respectively arranged on the two rotary stations, when the damping pieces are required to be switched, the damping piece driving motor rotates, the damping piece rotary table is driven to rotate through the gear meshing to realize the switching work of the damping pieces, and when the rotary table moves to a required stroke, a blocking piece on the rotary table enables the potential of a photoelectric switch 2-5 to change, a control board controls the damping piece driving motor to be powered off, and the damping piece driving motor stops rotating.
As shown in fig. 4, a guide rail 3-3 and a detector mounting plate 3-2 mounted on the guide rail are further arranged in the mechanical cabin 1-2, the infrared detector 3-6 is mounted on the detector mounting plate, a linear stepping motor 3-1 for driving the detector mounting plate to move along the optical axis direction is arranged in the mechanical cabin, when the temperature changes, the linear stepping motor 3-1 drives the optical axis of the infrared detector to move back and forth, and the target surface position of the detector is adjusted to adapt to the change of the focal length caused by the temperature; the linear potentiometer 3-4 feeds back the position through a feedback resistor so as to realize automatic adjustment control, and the front and the rear of the detector mounting plate are provided with blocking nails which are matched with the photoelectric switch 3-5 to limit.
As shown in fig. 5, a transition plate adjusting group is arranged at the bottom of the mechanical cabin, in order to realize the requirement of parallel adjustment of the optical axis of the optical machine and the coaxial axis of the main optical system, the interface (four-way installation surface) of the optical machine and the telescope main machine is required to have a two-dimensional tilt adjusting function, the two-dimensional tilt adjusting function is divided into pitch adjusting and azimuth adjusting, and the pitch adjusting function and the azimuth adjusting function are not interfered with each other so as to be convenient for actual adjustment, and a transition mechanism is added between the optical machine system and the four-way surface, wherein the transition plate and the optical machine system are used as a primary installation positioning method through a center positioning ball 4-4, and simultaneously, the decoupling of the two-dimensional tilt adjusting can be realized; the pitching direction is determined according to actual experimental data, and the front end or the rear end of the optical mechanical system is jacked by the auxiliary jackscrew to realize fine adjustment of the angle of the pitching direction; after the requirement is met, the jacking position is filled with thin gaskets with corresponding thickness, and screws at all positions are locked, so that fine adjustment of the pitching direction can be realized.
In the installation process, when the optical axis of the optical system and the optical axis of the main system incline in the azimuth direction, 4 locking screws on the adjusting block 4-2 can be loosened, and one side jackscrew mechanism is loosened to push the other side jackscrew mechanism according to the guidance of test data, so that the adjustment of the inclination amount in the azimuth direction is realized.
The utility model compensates the phase difference caused by high and low temperature by adjusting the position of the target surface of the detector, the whole lens machine is connected with the four-way platform through the transition mechanism, and the transition mechanism has a two-dimensional inclination adjusting function, so that the real installation and adjustment can realize the coaxial parallel installation and adjustment of the optical machine and the main optical system.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A medium wave capture tracking system, characterized by: the system is sequentially provided with an optical cabin, a mechanical cabin and an electronic cabin from left to right along the light incidence direction, a transition plate is arranged below the mechanical cabin, the optical cabin is formed by an integral sealed lens barrel, a main lens group optical system of the lens barrel sequentially comprises a meniscus positive lens A, a meniscus negative lens B, a meniscus negative lens C, a meniscus positive lens D, a biconcave negative lens E and a biconvex positive lens F along the object plane to the image plane, and the meniscus lenses are all convex surfaces facing to the object plane; a detector adjusting assembly is arranged in the mechanical cabin, a driver and a circuit board of the system are arranged in the electronic cabin, the detector adjusting assembly comprises an infrared detector which can move along the optical axis direction, and an imaging surface serving as an optical system, namely a detector target surface, is arranged on the infrared detector; focusing is achieved by adjusting movement of an imaging surface as an optical system in the optical axis direction.
2. The medium wave acquisition tracking system of claim 1, wherein: the specific parameters of the optical system are as follows:
focal length: 400mm;
f number: 2.0;
the detector comprises: refrigeration 640x512, 15um;
working spectral range: 3.7-4.8 um.
3. The medium wave capturing and tracking system according to claim 1 or 2, characterized in that: optical parameter table of the main lens group:
Aspheric related data
The aspherical expression is:
z represents the position in the direction of the optical axis, r represents the height in the direction perpendicular to the optical axis, c represents the radius of curvature, k represents the conic coefficient, α 4 、α 6 、α 8 、α 10 .. it represents aspherical coefficients;
in the aspherical data, E-n represents ". Times.10" -n ", e.g. 3.0451E-005, represents 3.0451X 10 -5 。
4. A medium wave acquisition tracking system according to claim 3, characterized in that: the lens barrel is internally provided with a front protection sheet and a rear protection sheet which are respectively positioned in front of and behind the main lens group; the damping piece switching group comprises a motor frame, a damping piece driving motor fixed on the motor frame, a gear fixed on an output shaft of the damping piece driving motor, and a damping piece rotary table with a handle, which is meshed with the gear and is driven, wherein two rotary stations coaxial with the main lens group are arranged on the damping piece rotary table with the handle, different damping pieces are respectively arranged on the two rotary stations, when the damping piece is required to be switched, the damping piece driving motor rotates, the damping piece rotary table is driven to rotate through the gear meshing to realize the switching work of the damping piece, when the rotary table moves to a required stroke, the photoelectric switch potential is changed by a baffle piece on the rotary table, the control board controls the damping piece driving motor to be powered off, and the damping piece driving motor stops rotating.
5. The medium wave acquisition tracking system of claim 4, wherein: still be equipped with the guide rail in the machinery deck, install the detector mounting panel on the guide rail, the infrared detector is installed on the detector mounting panel, is equipped with the linear stepping motor who drives the detector mounting panel and remove along the optical axis direction at the machinery deck, and when temperature variation, linear stepping motor drives the infrared detector optical axis and reciprocates, through adjustment detector target surface position to the focus that adaptation temperature leads to changes.
6. The medium wave acquisition tracking system of claim 5, wherein: and covering cover plates are arranged on four sides of the mechanical cabin and the electronic cabin.
7. The medium wave acquisition tracking system of claim 6, wherein: the optical cabin is sealed by nitrogen filling.
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| CN211454082U (en) * | 2020-01-03 | 2020-09-08 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens |
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| JP2007212777A (en) * | 2006-02-09 | 2007-08-23 | Nikon Corp | Zoom lens |
| JP5891912B2 (en) * | 2012-04-04 | 2016-03-23 | 株式会社ニコン | Optical system, optical device |
| CN203324565U (en) * | 2013-06-28 | 2013-12-04 | 山东神戎电子股份有限公司 | Infrared zooming lens |
| CN105116526B (en) * | 2015-09-21 | 2017-08-25 | 福建福光股份有限公司 | High zoom ratio continuous vari-focus telephotography camera lens and its control method |
| CN106154522B (en) * | 2016-08-22 | 2018-08-21 | 福建福光股份有限公司 | The big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming method |
| RU2698522C1 (en) * | 2018-06-04 | 2019-08-28 | Публичное акционерное общество "Ростовский оптико-механический завод" | Infrared lens with temperature compensation of focusing |
| CN109541788B (en) * | 2018-12-29 | 2021-07-27 | 山东神戎电子股份有限公司 | Uncooled continuous zooming optical passive athermalization lens |
| CN110161663B (en) * | 2019-04-22 | 2020-04-03 | 中国科学院西安光学精密机械研究所 | Refrigeration type athermal infrared fisheye optical system |
| CN112946866A (en) * | 2021-02-02 | 2021-06-11 | 昆明云锗高新技术有限公司 | Low-distortion large-relative-aperture refrigeration type athermalization infrared wide-angle optical system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716297A (en) * | 2019-10-30 | 2020-01-21 | 凯迈（洛阳）测控有限公司 | Long-focus large-target-surface infrared continuous zooming optical system |
| CN211454082U (en) * | 2020-01-03 | 2020-09-08 | 福建福光天瞳光学有限公司 | Large-target-surface high-resolution optical athermalization lens |
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