CN104330893B - Infrared multi-view field light path system - Google Patents
Infrared multi-view field light path system Download PDFInfo
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- CN104330893B CN104330893B CN201410576485.9A CN201410576485A CN104330893B CN 104330893 B CN104330893 B CN 104330893B CN 201410576485 A CN201410576485 A CN 201410576485A CN 104330893 B CN104330893 B CN 104330893B
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Abstract
The invention relates to an infrared multi-view field light path system which comprises at least two front light path systems and a rear light path system. The rear light path system comprises a rotating reflector group, and the front light path systems and the rear light path system respectively form light path systems of different view fields through the rotating reflector group. Infrared multi-view fields are switched by the aid of a method of a rotating reflector, multi-view field light paths are realized by the aid of a rotating reflex reflector, optical view fields are relatively independent, and the optical view fields can simultaneously obtain high optical transmittance. In addition, only the rotating reflex reflector is a movable component, and the rest is fixed components, so that each optical view field can have high optical axis precision. The infrared multi-view field light path system is high in positioning accuracy and easy to control, and a view field switching mechanism is simple.
Description
Technical field
The present invention relates to a kind of infrared many visual field light path systems, belong to infrared optics technical field.
Background technology
Both at home and abroad the implementation of infrared many visual field variable-power optical systems, is divided into cut-in manner and axial movement mode.Cut
Enter the conversion that many visual field optical systems of mode realize many visual fields by way of the switching of different zoom microscope groups, the advantage of which is
Narrow visual field has highest plain shaft precision and highest optical transmittance.Have the disadvantage that big or middle visual field optical transmittance is low, and by
In being caused using switching mode, system radial dimension is excessive, motion is complicated and heavier-weight.Axial movement mode is more
Diverse location of the visual field optical system by zoom microscope group with compensation microscope group on optical axis realizes the conversion of many visual fields, which
Advantage is the small volume of system, lightweight.Have the disadvantage because by the way of axial movement, all optical elements are multiple visual fields
Share, the transmitance for causing whole optical system is low, optical axis and visual field in-placing precision be not high.
The content of the invention
It is an object of the invention to provide a kind of infrared many visual field light path systems, to solve existing infrared many visual field zoom light
The implementation transmitance of system is low, optical axis and visual field in-placing precision is not high or system radial dimension is excessive, fitness machine
The problem of structure complexity and heavier-weight.
For achieving the above object, the solution of the present invention includes a kind of infrared many visual field light path systems, including before at least two
Light path system after light path system and one, rear light path system includes a rotary reflection microscope group, for each front light path system to be divided
Not from the light path system of the different visual fields of rear light path system composition.
Front light path system includes pre-objective group, the fixed refluxing reflection mirror group that same optical axis sets gradually；Light path system afterwards
The rotary reflection microscope group set gradually including same optical axis and collecting lenses group, and for receiving the light that collecting lenses group is transmitted
The detector of signal.
Light path system is the front light path system of 4 different visual fields before at least two, respectively before the first of narrow visual field light path
Light path system, middle small field of view light path second before light path system, big visual field light path the 3rd before light path system, in big visual field light path
The 4th before light path system.
It is an advantage of the current invention that the conversion by realizing infrared many visual fields using the method for rotating mirror.Using rotation
Refluxing reflection mirror realizes the light path of many visual fields, the relatively independent design of each optical field of view, ensure that narrow visual field, middle small field of view,
Big visual field, in big visual field obtain high optical transmittance simultaneously.In addition, only rotation refluxing reflection mirror is moving component, remaining
Fixed component is, therefore, it is possible to ensure that each optical field of view has high plain shaft precision.That is, infrared many visual field light path systems
Ensure that each visual field all has high plain shaft precision, while ensureing that each visual field all has high optical transmittance.
And the present invention is directed to different use demands, it is possible to provide narrow visual field, middle small field of view, big visual field, in big visual field it is many
Individual optical field of view, simply by the rotation of rotating mirror multiple visual fields are can be realized as, and visual field switching mechanism is simple, smart in place
Degree is high, easily controllable.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is infrared many visual field light path system front views (Fig. 2 .A) and rearview (Fig. 2 .B)；
Fig. 3 is infrared many visual field light path system top views (Fig. 3 .A) and front view (Fig. 3 .B)；
Fig. 4 is narrow visual field system structure diagram；
Fig. 5 is middle small field of view system structure diagram；
Fig. 6 is big visual field system structure diagram；
Fig. 7 big visual field system structure diagrams in being；
Fig. 8 is narrow visual field optical transfer function curve chart；
Fig. 9 is middle small field of view optical transfer function curve chart；
Figure 10 is big visual field optical transfer function curve chart；
Figure 11 big visual field optical transfer function curve charts in being.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described in detail.
A kind of infrared many visual field light path systems, including light path system, rear light path after light path system and one before at least two
System include a rotary reflection microscope group, for by each front light path system respectively from the light path of the different visual fields of rear light path system composition
System.
Based on above technical scheme, with reference to accompanying drawing, be given with next specific embodiment.
As shown in figure 1, pre-objective group 1, fixed refluxing reflection mirror group 5, rotary reflection microscope group 9, collecting lenses group 10 with
Detector 11 constitutes narrow visual field light path system；Based on narrow visual field light path, when Motor drive rotary reflection microscope group 9 is around rotary shaft
90 ° of oo' rotate counterclockwises, pre-objective group 2, fixed refluxing reflection mirror group 6, rotary reflection microscope group 9, collecting lenses group 10 and spy
Survey small field of view light path system during device 11 is constituted；Based on middle small field of view light path, when Motor drive rotary reflection microscope group 9 is around rotation
90 ° of axle oo' rotate counterclockwises, pre-objective group 3, fixed refluxing reflection mirror group 7, rotary reflection microscope group 9, collecting lenses group 10 with
Detector 11 constitutes big visual field light path system；Based on big visual field light path, when Motor drive rotary reflection microscope group 9 is around rotary shaft
90 ° of oo' rotate counterclockwises, pre-objective group 4, fixed refluxing reflection mirror group 8, rotary reflection microscope group 9, collecting lenses group 10 and spy
Survey big visual field light path in the composition system of device 11；In based on the light path of big visual field, when Motor drive rotary reflection microscope group 9 is around rotation
90 ° of axle oo' rotate counterclockwises, pre-objective group 1, fixed refluxing reflection mirror group 5, rotary reflection microscope group 9, collecting lenses group 10 with
Detector 11 constitutes system narrow visual field light path.Different angles are rotated to by rotary reflection microscope group 9, can realize narrow visual field, in
Small field of view, big visual field, in big visual field the conversion of many visual fields.
Fig. 2 .A are infrared many visual field light path system front views, and Fig. 2 .B are infrared many visual field light path system rearviews；Fig. 3 .A
It is infrared many visual field light path system top views, Fig. 3 .B are infrared many visual field light path system front views；Fig. 4 is narrow visual field system knot
Structure schematic diagram；Fig. 5 is middle small field of view system structure diagram；Fig. 6 is big visual field system structure diagram；Fig. 7 big visual fields in being
System structure diagram.
In infrared many visual field light path systems：
Narrow visual field focal length is in the range of 300mm～600mm, middle small field of view focal length is regarded in the range of 100mm～300mm, greatly
Focal length in the range of 10mm～50mm, in big visual field focal length in the range of 80mm～100mm.
System is by the way of secondary imaging.
Optical system F number：F/2, f/3, f/4.
Light path is folded using speculum group.
Its applicable detector can be 320 × 256,384 × 288,640 × 512,1280 × 1024 infrared Jiao of refrigeration mode
Planar detector, applicable wavelengths：3 μm～5 μm of medium wave, 8 μm～12 μm of long wave.
Concrete optical parametric see the table below shown (unit：mm)
Table 1 is narrow visual field light path optical parametric table；Table 2 is middle small field of view path optics parameter list；The big visual field light in being of table 3
Road optical parametric table；Table 4 is big visual field path optics parameter list.
Table 1
Table 2
Table 3
Table 4
Fig. 8 is narrow visual field optical transfer function curve chart；Fig. 9 is middle small field of view optical transfer function curve chart；Figure 10 is
Big visual field optical transfer function curve chart；Figure 11 big visual field optical transfer function curve charts in being.
For different use demands, this infrared many visual field light path system can provide narrow visual field, middle small field of view, big visual field,
In the big multiple optical field of view in visual field.Narrow visual field is used for the identification of distant object；Middle small field of view is used for the accurately detecting of target；Greatly
Visual field is used for assisting navigation and landing round the clock；In big visual field be used for the search of target, detection.
The light path configuration of many visual fields is realized using rotation refluxing reflection mirror, the relatively independent design of each optical field of view can
Ensure narrow visual field, middle small field of view, big visual field, in big visual field obtain high optical transmittance simultaneously.
The light path configuration of many visual fields is realized using rotation refluxing reflection mirror, narrow visual field, middle small field of view, big visual field, in regard greatly
Only rotation refluxing reflection mirror is moving component in the light path of field, and remaining is fixed component, therefore, it is possible to ensure that each optics is regarded
Field has high plain shaft precision.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, and for those of ordinary skill in the art, various changes are designed in teaching of the invention
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
Change, modification, replacement and the modification that embodiment is carried out is still fallen within protection scope of the present invention.
Claims (1)
1. a kind of infrared many visual field light path systems, infrared many visual field light path systems are included after 4 front light path systems and one
Light path system, the rear light path system include a rotary reflection microscope group, for by each front light path system respectively with rear light path system
The light path system of the different visual fields of system composition；
The front light path system includes that from the front to the back direction is successively set on the pre-objective group before rotary reflection microscope group, fixed folding
Turn speculum group；Afterwards light path system includes rotary reflection microscope group and the collecting lenses group for setting gradually from the front to the back, and is used for
Receive the detector of the optical signal that collecting lenses group is transmitted；
4 front light path systems are the front light path system of 4 different visual fields, respectively light path system before the first of narrow visual field light path
System, middle small field of view light path second before light path system, big visual field light path the 3rd before light path system, in big visual field light path the 4th
Front light path system；
It is characterized in that：Pre-objective group and fixed refluxing reflection mirror group in front light path system is around rear light path system
Arrange, and the pre-objective group in the front light path system of 4 different visual fields and the collecting lenses group in rear light path system and detection
Device is respectively positioned on the front side of rotary reflection microscope group.
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| CN105116542B (en) * | 2015-07-24 | 2017-09-29 | 北京航天控制仪器研究所 | A kind of double vision field computation relevance imaging system and method |
| CN105278087B (en) * | 2015-12-04 | 2017-09-01 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of three visual field infrared optical systems and Optical devices |
| CN105676305B (en) * | 2015-12-31 | 2017-05-31 | 南京华图信息技术有限公司 | A kind of many visual field collection of illustrative plates cooperative detection systems of Shared aperture and method |
| CN106707502B (en) * | 2016-12-05 | 2019-01-08 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of more visual field light path systems of super long-focus infrared |
| CN114200665B (en) * | 2021-11-03 | 2023-11-24 | 河北汉光重工有限责任公司 | Dual-aperture infrared dual-view-field switching device |
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