CN107907979A - A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens - Google Patents
A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens Download PDFInfo
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- CN107907979A CN107907979A CN201711155215.0A CN201711155215A CN107907979A CN 107907979 A CN107907979 A CN 107907979A CN 201711155215 A CN201711155215 A CN 201711155215A CN 107907979 A CN107907979 A CN 107907979A
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- China
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- optical axis
- speculum
- group
- sensitive surface
- image rotation
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- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005057 refrigeration Methods 0.000 title claims abstract description 9
- 238000001931 thermography Methods 0.000 title claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/084—Adjustable or slidable
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens, using group, detector protection window, detector sensitive surface after group, the first speculum, the second speculum, relaying image rotation before front lens group, relaying image rotation and tilts cushion block composition light shaft offset system；First speculum is in 45 ° of angles with group before relaying image rotation, and the second speculum is perpendicular to the first speculum；The long side direction for providing detector sensitive surface is the x-axis of coordinate system, and the line and x-axis at front lens group center and detector sensitive surface center have certain angle；Inclination cushion block is triangular prism structure, its rib is set along optical tube length direction, its rib above is parallel with the line at detector sensitive surface center with front lens group center；By adjusting the inclination angle size for tilting cushion block close to lens barrel side, it is possible to achieve the offset of optical axis.
Description
Technical field
The invention belongs to refrigeration mode infrared thermal imaging technique field, and in particular to a kind of small size, low cost, easy to secondary
The space optical axis offset method of adjusting.
Background technology
, can be in use in order to ensure 100% cold stop effect in the design process of refrigeration mode infrared thermal imaging camera lens
After relay system, the matching of optical system diaphragm and refrigeration type infrared detector internal aperture is realized.Turn due to introducing relaying
As system, and refrigeration type infrared detector volume is larger, so taken up space to reduce optical system, or adapt to it is different outside
Envelope, the method that designer would generally use offset optical axis.
Traditional light shaft offset method is relayed and organizes 2 before image rotation as shown in Figure 1, including front lens group 1, speculum 1, speculum
24, speculum 35, speculum 46, organizes 7, detector protects window 8, detector sensitive surface 9 after relaying image rotation；Provide detector
The long side direction of sensitive surface 9 is the x-axis of coordinate system, and short side direction is the y-axis of coordinate system, is z-axis perpendicular to the direction of sensitive surface,
Focal plane center is the origin o of coordinate system；Speculum one is parallel to x-axis, and with xoz faces angle at 45 °, speculum four is perpendicular to anti-
Mirror one is penetrated, speculum two is parallel to z-axis, and with yoz faces angle at 45 °, speculum three is perpendicular to speculum two；Each mirror center
Intersect with optical axis.
Its light shaft offset principle is as shown in Fig. 2, speculum two and speculum three realize the offset distance X in x-axis direction；Instead
Penetrate mirror one, speculum two, speculum three and speculum four realizes the offset distance (Y2-Y1) in y-axis direction jointly, passes through two
The synthesis in direction, realizes the offset of optical axis optional position.This offset method occupied space is big, and optical adjustment is complicated, is unfavorable for
The Secondary Control of optical axis.
The content of the invention
The purpose of the present invention is the existing light shaft offset mode of simplification, reduces off-set construction and is taken up space, reduces optical axis two
The difficulty of secondary movement, there is provided a kind of small size, low cost, the space optical axis offset method easy to Secondary Control.
Technical scheme is as follows：
A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens, it is characterised in that：Using front lens group, relaying
Group, detector protect window, detector sensitive surface and tilting pad after group, the first speculum, the second speculum, relaying image rotation before image rotation
Block forms light shaft offset system；Before the front lens group, relaying image rotation after group, the first speculum, the second speculum, relaying image rotation
Group, detector protection window, detector sensitive surface are arranged in lens barrel, and the inclination cushion block is arranged on the outside of lens barrel；
Group is parallel to each other and optical axis coincidence before the front lens group, relaying image rotation；Group, detector protection after the relaying image rotation
Window, detector sensitive surface is parallel to each other and optical axis coincidence；
The optical axis organized before regulation front lens group, relaying image rotation is A axis, relays group, detector protection window, detector sense after image rotation
The optical axis for answering face is B axle；
There is certain spacing between setting optical axis A and optical axis B；
The plane for setting the first speculum to be formed perpendicular to optical axis A and optical axis B, and be in 45 ° of angles with group before relaying image rotation,
And optical axis A passes through the first mirror center；
Second speculum is set perpendicular to the first speculum, and optical axis B passes through the second mirror center；
The long side direction for providing detector sensitive surface is the x-axis of coordinate system, and short side direction is the y-axis of coordinate system, perpendicular to
The direction of detector sensitive surface is z-axis, and focal plane center is the origin o of coordinate system；
The line AB at front lens group center and detector sensitive surface center is set to have certain angle theta with x-axis；
The inclination cushion block is triangular prism structure, its rib is arranged on lens barrel side, and one side along optical tube length direction
Face is contacted with lens barrel, its rib above is parallel with the line AB at detector sensitive surface center with front lens group center；Pass through tune
Section tilts cushion block close to the inclination angle size of lens barrel side, can adjust the size of angle theta, realize the offset of optical axis.
Compared with prior art, the advantage of the invention is that：
First, the present invention only used two panels speculum, relative to traditional offset manner, reduce two panels, reduce production
Product cost.
2nd, conventional method will adjust the position of four speculums, and calibration procedures are complicated；The present invention only needs to adjust two instead
Position of the mirror relative to light path is penetrated, simplifies calibration procedures.
3rd, traditional light shaft offset method, is often adjusted once, certain change will occur for the relative position of speculum, instead
The change of image quality can be caused, it is necessary to readjust speculum relative position by penetrating the change in location of mirror, and process is relative complex, is not easy to
Secondary operation is easy to Secondary Control；The present invention tilts the base angle θ of cushion block by adjusting1, can very easily carry out the inclined of optical axis
Transposition section, and the change of image quality will not be introduced.
4th, traditional light shaft offset mode employs four speculums, and has waves of the Y1 apart from overlapping space in y-axis direction
Take, more two eyeglasses, have also had more fixation, the adjustment structure of two eyeglasses；The present invention is only with two panels speculum and one
The cushion block of zero allowance requirement achieves that the Secondary Control of optical axis, and part is few, small.
Brief description of the drawings
Fig. 1 is existing light shaft offset system structure diagram；
Fig. 2 is existing light shaft offset system principle schematic diagram；
Fig. 3 is the light shaft offset system structure diagram of the present invention；
Fig. 4 is the light shaft offset system principle schematic diagram of the present invention.
Embodiment
As shown in Figure 3, Figure 4, the present invention is using the 2, first speculum 10 of group, the second speculum before front lens group 1, relaying image rotation
11st, group 7, detector protection window 8, detector sensitive surface 9 and inclination cushion block 12 form light shaft offset system after relaying image rotation；It is described
Front lens group 1, relaying image rotation before organize the 2, first speculum 10, the second speculum 11, relaying image rotation after group 7, detector protection window 8,
Detector sensitive surface 9 is arranged in lens barrel, and the inclination cushion block 12 is arranged on the outside of lens barrel；
Group 2 is parallel to each other and optical axis coincidence before the front lens group 1, relaying image rotation；Group 7, detector after the relaying image rotation
Protect window 8, detector sensitive surface 9 is parallel to each other and optical axis coincidence；
The optical axis of group 2 is A axis before regulation front lens group 1, relaying image rotation, and group 7, detector protect window 8, detection after relaying image rotation
The optical axis of device sensitive surface 9 is B axle；
There is certain spacing between setting optical axis A and optical axis B；
The plane for setting the first 10 mirrors of reflection to be formed perpendicular to optical axis A and optical axis B, and with group 2 before relaying image rotation in 45 ° of folders
Angle, and optical axis A passes through the center of the first speculum 10；
Second speculum 11 is set perpendicular to the first speculum 10, and optical axis B passes through the center of the second speculum 11；
The long side direction for providing detector sensitive surface 9 is the x-axis of coordinate system, and short side direction is the y-axis of coordinate system, perpendicular to
The direction of detector sensitive surface is z-axis, and focal plane center is the origin o of coordinate system；
The line AB at front lens group center 1 and detector sensitive surface center 9 is set to have certain angle theta with x-axis；
The inclination cushion block 12 is triangular prism structure, its rib is arranged on lens barrel side, and one along optical tube length direction
Side is contacted with lens barrel, between its rib above (the K sides in Fig. 4) and 9 center of 1 center of front lens group and detector sensitive surface
Line AB it is parallel；By adjusting the inclination angle theta for tilting cushion block 12 close to lens barrel side1Size, can adjust 1 He of front lens group center
The size of angle theta between the line AB and x-axis at detector sensitive surface center 9, realizes the offset of optical axis.
First speculum 10, using environment-friendly type glass h-bak7, hardness 547, is unlikely to deform, and the work of cold working
Skill is ripe, and reflector type precision is easily guaranteed that.In the present system, optical axis is turn 90 degrees by it partially, for light path of turning back；
Second speculum 11, using environment-friendly type glass h-bak7, hardness 547, is unlikely to deform, and the work of optics cold working
Skill is ripe, and reflector type precision is easily guaranteed that.Optical axis is turn 90 degrees by it partially, offsets 90 degree of optical axises deflection that speculum 10 introduces.
Tilt cushion block and use aluminum, it is easy to process.According to predetermined light shaft offset value during processing, its inclination angle theta is preset1Greatly
It is small.
Claims (1)
- A kind of 1. space optical axis offset method of refrigeration mode infrared thermal imaging camera lens, it is characterised in that：Turned using front lens group, relaying As group, detector protection window, detector sensitive surface after preceding group, the first speculum, the second speculum, relaying image rotation and tilt cushion block Form light shaft offset system；The front lens group, relaying image rotation before group, the first speculum, the second speculum, relaying image rotation after group, Detector protection window, detector sensitive surface are arranged in lens barrel, and the inclination cushion block is arranged on the outside of lens barrel；Group is parallel to each other and optical axis coincidence before the front lens group, relaying image rotation；Group after the relaying image rotation, detector protection window, Detector sensitive surface is parallel to each other and optical axis coincidence；The optical axis organized before regulation front lens group, relaying image rotation is A axis, relays group, detector protection window, detector sensitive surface after image rotation Optical axis be B axle；There is certain spacing between setting optical axis A and optical axis B；The plane for setting the first speculum to be formed perpendicular to optical axis A and optical axis B, and be in 45 ° of angles with group before relaying image rotation, and light Axis A passes through the first mirror center；Second speculum is set perpendicular to the first speculum, and optical axis B passes through the second mirror center；The long side direction for providing detector sensitive surface is the x-axis of coordinate system, and short side direction is the y-axis of coordinate system, perpendicular to detection The direction of device sensitive surface is z-axis, and focal plane center is the origin o of coordinate system；The line AB at front lens group center and detector sensitive surface center is set to have certain angle theta with x-axis；The inclination cushion block be triangular prism structure, its rib is arranged on lens barrel side along optical tube length direction, and one side and Lens barrel contacts, its rib above is parallel with the line AB at front lens group center and detector sensitive surface center；Inclined by adjusting Taper liner block can adjust the size of angle theta, realize the offset of optical axis close to the inclination angle size of lens barrel side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155215.0A CN107907979A (en) | 2017-11-17 | 2017-11-17 | A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155215.0A CN107907979A (en) | 2017-11-17 | 2017-11-17 | A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907979A true CN107907979A (en) | 2018-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711155215.0A Pending CN107907979A (en) | 2017-11-17 | 2017-11-17 | A kind of space optical axis offset method of refrigeration mode infrared thermal imaging camera lens |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648868A (en) * | 1995-05-12 | 1997-07-15 | The United States Of America As Represented By The Secretary Of The Army | Second generation FLIR NV-81 |
| US5831762A (en) * | 1996-06-21 | 1998-11-03 | Raytheon Company | Imaging sensor having multiple fields of view and utilizing all-reflective optics |
| CN101387731A (en) * | 2008-10-22 | 2009-03-18 | 中国科学院长春光学精密机械与物理研究所 | Reflecting mirror inclination angle trimming regulating mechanism |
| US20110079713A1 (en) * | 2009-10-07 | 2011-04-07 | Topins Co., Ltd. | Uni-axis type lens module for thermal imaging camera |
| CN103513409A (en) * | 2013-10-29 | 2014-01-15 | 苏州大学 | Large visual field optical imaging method for guided missile detection and identification and system thereof |
| CN105676432A (en) * | 2016-03-16 | 2016-06-15 | 凯迈（洛阳）测控有限公司 | Optical compensation type long-wave infrared continuous zooming optical system |
| CN105759419A (en) * | 2016-04-08 | 2016-07-13 | 北京航天计量测试技术研究所 | Medium wave infrared image space scanning optical system having oscillating mirror |
-
2017
- 2017-11-17 CN CN201711155215.0A patent/CN107907979A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648868A (en) * | 1995-05-12 | 1997-07-15 | The United States Of America As Represented By The Secretary Of The Army | Second generation FLIR NV-81 |
| US5831762A (en) * | 1996-06-21 | 1998-11-03 | Raytheon Company | Imaging sensor having multiple fields of view and utilizing all-reflective optics |
| CN101387731A (en) * | 2008-10-22 | 2009-03-18 | 中国科学院长春光学精密机械与物理研究所 | Reflecting mirror inclination angle trimming regulating mechanism |
| US20110079713A1 (en) * | 2009-10-07 | 2011-04-07 | Topins Co., Ltd. | Uni-axis type lens module for thermal imaging camera |
| CN103513409A (en) * | 2013-10-29 | 2014-01-15 | 苏州大学 | Large visual field optical imaging method for guided missile detection and identification and system thereof |
| CN105676432A (en) * | 2016-03-16 | 2016-06-15 | 凯迈（洛阳）测控有限公司 | Optical compensation type long-wave infrared continuous zooming optical system |
| CN105759419A (en) * | 2016-04-08 | 2016-07-13 | 北京航天计量测试技术研究所 | Medium wave infrared image space scanning optical system having oscillating mirror |
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Application publication date: 20180413 |