CN202939359U - Multiple-field-of-view infrared optical system and rotary multiple-field-of-view switching device thereof - Google Patents
Multiple-field-of-view infrared optical system and rotary multiple-field-of-view switching device thereof Download PDFInfo
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- CN202939359U CN202939359U CN201220631046.XU CN201220631046U CN202939359U CN 202939359 U CN202939359 U CN 202939359U CN 201220631046 U CN201220631046 U CN 201220631046U CN 202939359 U CN202939359 U CN 202939359U
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Abstract
The utility model discloses a multiple-field-of-view infrared optical system and a rotary multiple-field-of-view switching device thereof. The multiple-field-of-view switching device comprises a mounting rack having an optical channel and a lens mount rotatably mounted in the optical channel. A first lens group and a second lens ground, which are arranged with the same optical axis, are deviated from a rotation axis of the lens mount and arranged at an interval. The optical axis between the two lens groups is coplanar with the optical axis of the multiple-field-of-view infrared optical system and is vertically intersected with the rotation axis of the lens mount. The lens mount is also in transmission connection with a driving mechanism, and the driving mechanism drives the lens mount to rotate around the axis of the lens mount. In use, lenses which are not involved in imaging are temporarily moved out the optical axis of the infrared optical imaging system, so that the number of the lenses is relatively small, requirements of a product for stability are improved, space in a radial dimension is narrowed, and the imaging quality of the optical system is improved.
Description
Technical field
The utility model relates in a kind of many visual fields infrared optical system and this optical system for switching rotary many visual fields switching device shifter of different visual fields.
Background technology
In the infrared optical system of existing many visual fields, the switching of each visual field mainly adopts axial zoom switching mode, it is by realizing the switching of different visual fields along spacing between optical axis mobile lens group change lens and then change system focal length, the lens numbers that adopts this axial zoom switching mode to participate in the infrared optics imaging is more, reduced the transmitance of infrared optical system, make transmittance descend, thereby increased system aberration, the image quality that causes each visual field is being affected in various degree all, reduced detection range and the resolution of infrared electro detection system.Chinese utility model patent open file CN202421618U discloses a kind of infrared imaging system of many visual fields switching, this imaging system is in light path, to be provided with for radially moving into along optical axis, thereby shift out the respective lens group that changes visual field, each lens combination is connected with respectively and drives it to move at a high speed, shift out the zoom motor of corresponding light shaft position, all be connected with control device on each zoom motor, and corresponding each lens combination be respectively equipped with for detection of the respective lens group move into immigration in-placing precision sensor that optical axis puts in place and shift out for detection of the respective lens group that optical axis puts in place shift out the in-placing precision sensor.The defect of the infrared imaging system of this many visual fields switching is: for the lens combination of switching visual field, along the radial direction perpendicular to optical axis, move into or shift out, cause the radial dimension of this optical forming system larger, structure is comparatively complicated, the demand that is unfavorable for airborne miniaturization, and its lens combination is moving into that optical axis puts in place or when shifting out optical axis and putting in place, the zoom motor of controlling high-speed rotation by control device at once after corresponding in-placing precision sensor detects lens combination and puts in place stops operating rapidly, but when the zoom motor stops because the lens combination high-speed motion can be due to the inertial force effect produces larger impact to system, thereby cause lens combination offset light shaft position, cause this infrared imaging system easily when carrying out the visual field switching, to lose tracking target.
The utility model content
A purpose of the present utility model is: a kind of simple in structure, many visual fields infrared optical system that imaging is stable is provided.
The technical scheme of many visual fields of the utility model infrared optical system is: a kind of many visual fields infrared optical system, be included in the focusing lens unit and the image receiving unit that set gradually along systematic optical axis on light path, on the light path in the place ahead, focusing lens unit, also be provided with for switching Duo visual field, different visual field switching device shifter, described many visual fields switching device shifter comprises erecting frame and lens mount, described erecting frame has the optical channel passed through for system light path, the semiaxis that described lens mount coaxially sets firmly by its opposite end rotates and is assemblied in the optical channel of erecting frame, the interval of departing from its pivot center on this lens mount is equipped with first lens group and the second lens combination, between this first lens group and the second lens combination with the optical axis between optical axis setting and this two lens combination and described systematic optical axis is coplanar and intersect vertically with the pivot center of described lens mount simultaneously, also be connected with driving mechanism on one of them semiaxis of lens mount, this driving mechanism drives lens mount to rotate and make wide corresponding to optical system of first lens group and the second lens combination around self axis, in, narrow three kinds of visual fields have with described systematic optical axis is vertical and reach that forward overlaps and oppositely overlap three working positions.
Described driving mechanism comprises the servomotor be fixedly mounted on erecting frame, the axis of servomotor output shaft is parallel with the axis of described lens mount rotating shaft, be fixed with driving pulley on the output shaft of described servomotor, be fixed with passive belt wheel in the rotating shaft of lens mount, between driving pulley and passive belt wheel, be connected with steel belt.
On described erecting frame, three of corresponding lens mount working positions also are respectively equipped with the in-placing precision sensor rotate in place for detection of lens mount, the in-placing precision sensor adopts hall device to guarantee that electricity is spacing, and the output terminal of in-placing precision sensor is connected with the controller of controlling the servomotor start and stop.
Between described erecting frame and lens mount, three working positions of corresponding lens mount also are provided with location locking mechanism.
Described first lens group is comprised of first lens and the second lens, and the radius of first face of described first lens is-23.5mm that the radius of second face is-31.99mm that center thickness is 7.2mm
,the radius of first face of the second lens is 1000mm, and the radius of second face is 79.5mm, and center thickness is 4.9mm; Described the second lens combination is comprised of the 3rd lens, and the radius of first face of the 3rd lens is-57.5mm that the radius of second face is-34.1mm that center thickness is 8mm; Also be provided with large object lens in the place ahead light path of described many visual fields switching device shifter.
It is a kind of simple in structure that the utility model also provides simultaneously, rotary many visual fields switching device shifter that volume is little, the technical scheme of this rotary many visual fields switching device shifter is: a kind of rotary many visual fields switching device shifter, comprise erecting frame and lens mount, described erecting frame has the optical channel for passing through for system light path, the semiaxis that described lens mount coaxially sets firmly by its opposite end rotates and is assemblied in the optical channel of erecting frame, the interval of departing from its pivot center on lens mount is equipped with first lens group and the second lens combination, between this first lens group and the second lens combination with the optical axis between optical axis setting and this two lens combination and described systematic optical axis is coplanar and intersect vertically with the pivot center of described lens mount simultaneously, also be connected with driving mechanism on one of them semiaxis of lens mount, this driving mechanism drives lens mount to rotate and make wide corresponding to optical system of first lens group and the second lens combination around self axis, in, narrow three kinds of visual fields have for the vertical forward that reaches of systematic optical axis, overlapping and oppositely overlap three working positions.
Described driving mechanism comprises the servomotor be fixedly mounted on erecting frame, the axis of servomotor output shaft is parallel with the axis of described lens mount rotating shaft, be fixed with driving pulley on the output shaft of described servomotor, be fixed with passive belt wheel in the rotating shaft of lens mount, between driving pulley and passive belt wheel, be connected with steel belt.
On described erecting frame, three of corresponding lens mount working positions also are respectively equipped with the in-placing precision sensor rotate in place for detection of lens mount, the in-placing precision sensor adopts hall device to guarantee that electricity is spacing, and the output terminal of in-placing precision sensor is connected with the controller of controlling the servomotor start and stop.
Between described erecting frame and lens mount, three working positions of corresponding lens mount also are provided with location locking mechanism.
Described first lens group is comprised of first lens and the second lens, and the radius of first face of described first lens is-23.5mm that the radius of second face is-31.99mm that center thickness is 7.2mm
,the radius of first face of the second lens is 1000mm, and the radius of second face is 79.5mm, and center thickness is 4.9mm; Described the second lens combination is comprised of the 3rd lens, and the radius of first face of the 3rd lens is-57.5mm that the radius of second face is-34.1mm that center thickness is 8mm.
The utility model adopts the lens mount drive lens group of rotating assembling to move in infrared optical system, shift out systematic optical axis and realize the switching of different visual fields, it is simple in structure, easy to use, guaranteeing under the prerequisite that field of view angle requires, reduced the lens numbers of whole infrared optical system, improved the transmitance of optical system, thereby make each view field image clear and stable, the image quality had and effect, and, it adopts rotary visual field switching device shifter effectively to shorten the radial dimension of system, thereby size and the weight of Airborne Electro-optical Detecting System have been reduced accordingly, for airborne miniaturization is laid a good foundation.
The accompanying drawing explanation
The schematic diagram that Fig. 1 is infrared optical system specific embodiment in many visual fields in the utility model;
The structural representation that Fig. 2 is rotary many visual fields switching device shifter specific embodiment in the utility model;
The vertical view that Fig. 3 is Fig. 2;
The B-B cut-open view that Fig. 4 is Fig. 2.
Embodiment
The specific embodiment of many visual fields of the present utility model infrared optical system as shown in Figure 1, Figure 2, Figure 3, Figure 4, its optical axis along light path 9 is provided with large object lens 1, the first focusing lens 6, the second focusing lens 7 and infrared eye 8 successively, on the light path between large object lens 1 and the first focusing lens 6, is provided with rotary many visual fields switching device shifter 4.This rotary many visual fields switching device shifter 4 comprises erecting frame 10 and lens mount 14, this erecting frame 10 has the optical channel passed through for system light path, lens mount 14 upper/lower terminals relatively coaxially are installed with semiaxis 18 and lower semiaxis 20, and this lens mount 14 is by the bearing 17 with upper semiaxis 18 corresponding matching, rotate and be assemblied in the optical channel of erecting frame 10 with the bearing 19 of lower semiaxis corresponding matching.The relative spacing that departs from its pivot center on this lens mount 14 is equipped with first lens group and the second lens combination, between this first lens group and the second lens combination with the optical axis between optical axis setting and this two lens combination and systematic optical axis is coplanar and intersect vertically with the pivot center of lens mount 14 simultaneously.Wherein, the first lens group is comprised of first lens 2 and the second lens 3, and the radius of first face of first lens 2 is-23.5mm that the radius of second face is-31.99mm that center thickness is 7.2mm
;the radius of first face of the second lens 3 is 1000mm, and the radius of second face is 79.5mm, and center thickness is 4.9mm; Its second lens combination is comprised of the 3rd lens 4, and the radius of first face of the 3rd lens 4 is-57.5mm that the radius of second face is-34.1mm that center thickness is 8mm; First lens 2 and the 3rd lens 4 all adopt the monocrystalline germanium material to make, the second lens 3 adopt single crystal silicon material to make, first lens 2, the second lens 3 and the 3rd lens 4 all adopt the processing of centering driving skills art, guarantee that the right alignment of each lens axis is not more than ￠ 0.014mm, and imaging effect is provided
Also be connected with driving mechanism on the upper semiaxis 18 of lens mount 14, this driving mechanism drives lens mount 14 to rotate and make first lens group and the second lens combination be moved out to optical axis 9 relevant positions or shift out optical axis 9 around self axis, thus make rotary many visual fields switching device shifter 4 corresponding to optical system wide, in, narrow three kinds of visual fields have with systematic optical axis is vertical reaches that forward overlaps and oppositely overlap three working positions.In the present embodiment, this driving mechanism comprises the servomotor 11 be fixedly mounted on erecting frame 10, the axis of servomotor 11 output shafts is parallel with the axis of lens mount 14 rotating shafts, be fixed with driving pulley 23 on the output shaft of servomotor 11, be fixed with passive belt wheel 13 in the rotating shaft of lens mount 14, be connected with steel belt 12 between driving pulley 23 and passive belt wheel 13, wherein, driving pulley 23 and passive belt wheel 13 all adopt stainless steel 0Cr17Ni4Cu4Nb(GB/T8732-88) material makes, steel belt 12 adopts steel band T8A 0.2 material to make, this steel belt 12 installs around on driving pulley 23 and driven pulley 13 by the steel band pressing plate 22 be divided on driving pulley 23 and passive belt wheel 13, form belt drive mechanism, realize the visual field switching by the gyration drive lens seat 14 of servomotor 11.
On erecting frame 10, three of corresponding lens mount 14 working positions also are respectively equipped with the in-placing precision sensor 15 rotate in place for detection of lens mount 14, the output terminal of in-placing precision sensor 15 is connected with the controller of controlling servomotor 11 start and stop, simultaneously, between erecting frame 10 and lens mount 14, three working positions of corresponding lens mount 14 also are provided with location locking mechanism.In the present embodiment, in-placing precision sensor 15 adopts hall device to guarantee that electricity is spacing, when lens mount 14 moves into place, by the induced signal of hall device, servomotor 11 is controlled, and realizes the rotation of lens mount 14 and stops.When lens mount 14 drives the first lens groups and puts in place with the switching of the second lens combination, be fixed on that magnet unit 21 on erecting frame 10 adopts the magnet of ￠ 8mm and the corresponding suction block that is fixed on the mechanical detent mechanism 16 on lens mount 14 comes together to guarantee mechanical in-placing precision locking positioning.
Many visual fields of the present utility model infrared optical system adopts rotary visual field switching mechanism, realize the lens that do not participate in imaging are temporarily shifted out outside infrared optics imaging system optical axis, make its lens number relatively few, thereby improved the stability requirement of product, can be applied in the optical system of double-view field or the requirement of three visual fields, reduce the lens numbers that participates in imaging, and shortened the radial dimension space, improved the image quality of optical system.
Claims (10)
1. visual field infrared optical system more than a kind, be included in the focusing lens unit and the image receiving unit that set gradually along systematic optical axis on light path, on the light path in the place ahead, focusing lens unit, also be provided with for switching Duo visual field, different visual field switching device shifter, it is characterized in that, described many visual fields switching device shifter comprises erecting frame and lens mount, described erecting frame has the optical channel passed through for system light path, the semiaxis that described lens mount coaxially sets firmly by its opposite end rotates and is assemblied in the optical channel of erecting frame, the interval of departing from its pivot center on this lens mount is equipped with first lens group and the second lens combination, between this first lens group and the second lens combination with the optical axis between optical axis setting and this two lens combination and described systematic optical axis is coplanar and intersect vertically with the pivot center of described lens mount simultaneously, also be connected with driving mechanism on one of them semiaxis of lens mount, this driving mechanism drives lens mount to rotate and make wide corresponding to optical system of first lens group and the second lens combination around self axis, in, narrow three kinds of visual fields have with described systematic optical axis is vertical and reach that forward overlaps and oppositely overlap three working positions.
2. many visual fields according to claim 1 infrared optical system, it is characterized in that, described driving mechanism comprises the servomotor be fixedly mounted on erecting frame, the axis of servomotor output shaft is parallel with the axis of described lens mount rotating shaft, be fixed with driving pulley on the output shaft of described servomotor, be fixed with passive belt wheel in the rotating shaft of lens mount, between driving pulley and passive belt wheel, be connected with steel belt.
3. many visual fields according to claim 2 infrared optical system, it is characterized in that, on described erecting frame, three of corresponding lens mount working positions also are respectively equipped with the in-placing precision sensor rotate in place for detection of lens mount, the in-placing precision sensor adopts hall device to guarantee that electricity is spacing, and the output terminal of in-placing precision sensor is connected with the controller of controlling the servomotor start and stop.
4. many visual fields according to claim 3 infrared optical system, is characterized in that, between described erecting frame and lens mount, three working positions of corresponding lens mount also are provided with location locking mechanism.
5. according to the described many visual fields of claim 1 to 4 any one infrared optical system, it is characterized in that, described first lens group is comprised of first lens and the second lens, the radius of first face of described first lens is-23.5mm, the radius of second face is-31.99mm that center thickness is 7.2mm
,the radius of first face of the second lens is 1000mm, and the radius of second face is 79.5mm, and center thickness is 4.9mm; Described the second lens combination is comprised of the 3rd lens, and the radius of first face of the 3rd lens is-57.5mm that the radius of second face is-34.1mm that center thickness is 8mm; Also be provided with large object lens in the place ahead light path of described many visual fields switching device shifter.
6. rotary many visual fields switching device shifter, it is characterized in that, comprise erecting frame and lens mount, described erecting frame has the optical channel for passing through for system light path, the semiaxis that described lens mount coaxially sets firmly by its opposite end rotates and is assemblied in the optical channel of erecting frame, the interval of departing from its pivot center on lens mount is equipped with first lens group and the second lens combination, between this first lens group and the second lens combination with the optical axis between optical axis setting and this two lens combination and described systematic optical axis is coplanar and intersect vertically with the pivot center of described lens mount simultaneously, also be connected with driving mechanism on one of them semiaxis of lens mount, this driving mechanism drives lens mount to rotate and make wide corresponding to optical system of first lens group and the second lens combination around self axis, in, narrow three kinds of visual fields have for the vertical forward that reaches of systematic optical axis, overlapping and oppositely overlap three working positions.
7. rotary many visual fields according to claim 6 switching device shifter, it is characterized in that, described driving mechanism comprises the servomotor be fixedly mounted on erecting frame, the axis of servomotor output shaft is parallel with the axis of described lens mount rotating shaft, be fixed with driving pulley on the output shaft of described servomotor, be fixed with passive belt wheel in the rotating shaft of lens mount, between driving pulley and passive belt wheel, be connected with steel belt.
8. rotary many visual fields according to claim 7 switching device shifter, it is characterized in that, on described erecting frame, three of corresponding lens mount working positions also are respectively equipped with the in-placing precision sensor rotate in place for detection of lens mount, the in-placing precision sensor adopts hall device to guarantee that electricity is spacing, and the output terminal of in-placing precision sensor is connected with the controller of controlling the servomotor start and stop.
9. rotary many visual fields according to claim 8 switching device shifter, is characterized in that, between described erecting frame and lens mount, three working positions of corresponding lens mount also are provided with location locking mechanism.
10. according to the described rotary many visual fields of claim 6 to 9 any one switching device shifter, it is characterized in that, described first lens group is comprised of first lens and the second lens, the radius of first face of described first lens is-23.5mm, the radius of second face is-31.99mm that center thickness is 7.2mm
,the radius of first face of the second lens is 1000mm, and the radius of second face is 79.5mm, and center thickness is 4.9mm; Described the second lens combination is comprised of the 3rd lens, and the radius of first face of the 3rd lens is-57.5mm that the radius of second face is-34.1mm that center thickness is 8mm.
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| CN201220631046.XU CN202939359U (en) | 2012-11-26 | 2012-11-26 | Multiple-field-of-view infrared optical system and rotary multiple-field-of-view switching device thereof |
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| CN201220631046.XU CN202939359U (en) | 2012-11-26 | 2012-11-26 | Multiple-field-of-view infrared optical system and rotary multiple-field-of-view switching device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678119A (en) * | 2017-09-05 | 2018-02-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of device for the more visual field zoom Shot changes of optical system three-stable state |
| CN108089392A (en) * | 2016-11-23 | 2018-05-29 | 北京遥感设备研究所 | A kind of vehicular photoelectric equipment double-view field rotary cutting transformation times mechanism |
| CN108234864A (en) * | 2017-12-18 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of high stability minimizes thermal infrared imager visual field switching mechanism |
| CN115220166A (en) * | 2022-07-20 | 2022-10-21 | 中国电子科技集团公司第十一研究所 | Novel double-view-field switching mechanism and double-view-field optical system |
-
2012
- 2012-11-26 CN CN201220631046.XU patent/CN202939359U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089392A (en) * | 2016-11-23 | 2018-05-29 | 北京遥感设备研究所 | A kind of vehicular photoelectric equipment double-view field rotary cutting transformation times mechanism |
| CN107678119A (en) * | 2017-09-05 | 2018-02-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of device for the more visual field zoom Shot changes of optical system three-stable state |
| CN107678119B (en) * | 2017-09-05 | 2020-03-27 | 中国航空工业集团公司洛阳电光设备研究所 | Device for switching tristable multi-view-field zoom lens of optical system |
| CN108234864A (en) * | 2017-12-18 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of high stability minimizes thermal infrared imager visual field switching mechanism |
| CN115220166A (en) * | 2022-07-20 | 2022-10-21 | 中国电子科技集团公司第十一研究所 | Novel double-view-field switching mechanism and double-view-field optical system |
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Granted publication date: 20130515 |