CN105403314A - Background correction auxiliary device of thermal imaging system - Google Patents
Background correction auxiliary device of thermal imaging system Download PDFInfo
- Publication number
- CN105403314A CN105403314A CN201510966350.8A CN201510966350A CN105403314A CN 105403314 A CN105403314 A CN 105403314A CN 201510966350 A CN201510966350 A CN 201510966350A CN 105403314 A CN105403314 A CN 105403314A
- Authority
- CN
- China
- Prior art keywords
- blade
- shaft collar
- imaging system
- thermal imaging
- background correction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000001931 thermography Methods 0.000 title claims abstract description 37
- 238000003705 background correction Methods 0.000 title claims abstract description 34
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- 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
- G01J5/0205—Mechanical elements; Supports for optical elements
-
- 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
-
- 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
- G01J5/80—Calibration
Abstract
The invention provides a background correction auxiliary device of a thermal imaging system. The auxiliary device comprises an annular fixed disc, an annular rotation disc and N blades, wherein N is a positive integer which is larger than or equal to 6; the annular rotation disc is arranged on the fixed disc and is concentric with the fixed disc; and the blades are uniformly distributed between the fixed disc and the rotation disc and are rotatably connected to the fixed disc. After being opened, all the blades completely cover a central circular hole of the fixed disc. After the blades are closed, the central circular hole of the fixed disc can be completely exposed. A motor for driving the rotation disc to rotate is fixed on the fixed disc. When the background of the thermal imaging system should be corrected, the auxiliary device can cover field of view and helps to finish the background correction process of the thermal imaging system, so imaging quality of the thermal imaging system is improved; and the auxiliary device can be used as a lens electric protection cover for preventing dust and collision from damaging a lens.
Description
Technical field
The present invention relates to a kind of thermal imaging system background correction servicing unit, belong to infrared thermal imaging technique field.
Background technology
Infrared focal plane detector (IRFPA) is the core component of infra-red thermal imaging system, owing to detecting the reason of heterogeneity and the stability thereof responded between unit, make the fixed pattern noise of detector array (FPN) more aobvious outstanding, be usually expressed as striated and waffle-like pattern noise, FPN reduces space and the temperature resolution of system, becomes one of principal element of restriction image quality raising.
Usually, thermal infrared imager mostly by completing Nonuniformity Correction (CNBUC) process based on radiation source, obtaining gain and the bias correction matrix of IRFPA, carrying out nonuniformity correction process to the output signal of IRFPA detector before dispatching from the factory.But slowly change in time due to FPN, through one period of working time or be subject to after environment sharply changes (as thermal imager operation temperature wide variation), correcting residual error can increase the weight of gradually.Have a strong impact on quality and the temperature resolution of infrared imaging.Therefore in actual applications, thermal imaging system, usually when image FPN is obvious gradually, is covered camera lens by lens cap or is carried out background correction facing to modes such as the uniform scenery of background and eliminate offset drift.But the method for blocking visual field is difficult to carry out in some applications.
Summary of the invention
The present invention is in order to overcome the deficiency of above technology, provide a kind of thermal imaging system background correction servicing unit, this device, when thermal imaging system needs to carry out background correction, realizes blocking visual field, assist thermal imager system to carry out background correction process, improve the image quality of thermal imaging system; Can also use as the electronic over cap of camera lens, dust can be avoided, collide with to the damage of camera lens.
the present invention overcomes the technical scheme that its technical matters adopts:
A kind of thermal imaging system background correction servicing unit, comprise annular shaft collar, be arranged on shaft collar and the annular rotating disc identical with the shaft collar center of circle and being uniformly distributed between shaft collar and rotating disc and the N number of blade be rotationally connected with on shaft collar, N is the positive integer of >=6, described all blades open rear cover shaft collar completely middle circular hole, pack up the rear middle circular hole exposing shaft collar completely, shaft collar is fixed with the motor driving rotating disc to rotate.
Preferred according to the present invention, described blade is rotationally connected with on shaft collar by bindiny mechanism, bindiny mechanism comprise be arranged at each root of blade blade fixed orifice, be fixed on the blade rotary post on each blade front surface and be arranged on rotating disc and the rail groove of each blade rotary post corresponding, on shaft collar, the position of corresponding blade fixed orifice is provided with rotating shaft, blade rotates around the shaft, blade rotary post is arranged in rail groove and also can moves along rail groove, is rotated when rotating disc rotates by blade rotary cornice moving vane.
Preferred according to the present invention, the diameter of shaft collar is greater than the diameter of rotating disc, is convenient to driven by motor rotating disc and rotates; The internal diameter of rotating disc is not less than the internal diameter of shaft collar, can firmly be arranged on shaft collar to make blade.
Preferred according to the present invention, described blade is the tulwar shape that root is round and smooth, front end is sharp-pointed, and every two adjacent blades are overlapping at neighboring edge place, and all blades open the complete plane of rear formation one, could cover the middle circular hole of shaft collar so completely.
Preferred according to the present invention, described rail groove is arc, can move to make blade rotary post in rail groove thus open blade.
the invention has the beneficial effects as follows:
1, thermal imaging system background correction servicing unit of the present invention is when thermal imager system needs to carry out background correction, realizes blocking visual field, has assisted thermal imager system to carry out background correction process, improves the image quality of thermal imaging system.
2, thermal imaging system background correction servicing unit of the present invention can also use as the electronic over cap of camera lens, can avoid dust, collide with to the damage of camera lens.
Accompanying drawing explanation
Structural representation when Fig. 1 is thermal imaging system background correction servicing unit closed condition of the present invention.
Fig. 2 is the structural representation of thermal imaging system background correction servicing unit opening procedure of the present invention.
Structural representation when Fig. 3 is thermal imaging system background correction servicing unit open mode of the present invention.
In figure, 1, shaft collar, 2, motor, 3, rotating disc, 4, rail groove, 5, blade, 6, blade fixed orifice, 7, blade rotary post.
Embodiment
Better understand the present invention for the ease of those skilled in the art, be described in further details below in conjunction with the drawings and specific embodiments to the present invention, following is only exemplary do not limit protection scope of the present invention.
As shown in Figure 1, give structural representation during thermal imaging system background correction servicing unit closed condition of the present invention, it comprises annular shaft collar 1, be arranged at annular rotating disc 3 on shaft collar 1 and identical with the shaft collar center of circle and be uniformly distributed between shaft collar 1 and rotating disc 3 and the N number of blade 5 be rotationally connected with on shaft collar 1, N is the positive integer of >=6, shaft collar 1 is fixed with the motor 2 driving rotating disc 3 to rotate, in the present embodiment, motor 2 is stepper motor.The diameter of described shaft collar 1 is greater than the diameter of rotating disc 3, and the internal diameter of rotating disc 3 is not less than the internal diameter of shaft collar 1; Blade 5 is the tulwar shape that root is round and smooth, front end is sharp-pointed, every two adjacent blades are overlapping at neighboring edge place, all blades open the complete plane of rear formation one, all blades 5 open rear cover shaft collar 1 completely middle circular hole, pack up the rear middle circular hole exposing shaft collar 1 completely; The preferred blade of the present embodiment is metal material, and the number of blade increases along with the increase of thermal imaging system diameter of lens, is 9 blades in the present embodiment.
Described blade 5 is rotationally connected with on shaft collar 1 by bindiny mechanism, bindiny mechanism comprise be arranged at each blade 5 root blade fixed orifice 6, be fixed on the blade rotary post 7 on each blade 5 front surface and be arranged on rotating disc 3 and the arc track groove 4 of each blade rotary post 7 corresponding, on shaft collar 1, the position of corresponding blade fixed orifice 6 is provided with rotating shaft, blade 5 rotates around the shaft, blade rotary post 7 is arranged in rail groove 4 and also can moves along rail groove, is with moving vane 5 to rotate when rotating disc 3 rotates by blade rotary post 7.
The principle of work of thermal imaging system background correction servicing unit of the present invention:
When thermal imaging system image quality variation needs to carry out background correction, main control module sends the instruction of opening background correction servicing unit, rotated by gear driven rotating disc 3 after motor 2 receives instruction, rotating disc 3 drives blade rotary post 7 to move in rail groove 4, the rotating shaft that blade 5 winding is placed in blade fixed orifice 6 rotates, automatically can open background correction servicing unit and namely shelter from thermal imaging system camera lens completely with the middle circular hole covering shaft collar 1 completely, blade opening procedure as shown in Figure 2, blade open completely after state as shown in Figure 3.When background correction is complete, main control module sends the instruction of closing background correction servicing unit, rotated by gear driven rotating disc 3 after motor 2 receives the instruction of stopping device, rotating disc 3 drives blade rotary post 7 to move in the opposite direction in rail groove 4, the rotating shaft that blade 5 winding is placed in blade fixed orifice 6 rotates in the other direction, automatically closes background correction servicing unit and namely exposes thermal imaging system camera lens completely with the middle circular hole exposing shaft collar 1 completely.It is given an order by main control module that blade of the present invention opens and closes, and the rotation of automatic control motor completes, and need not manually open and close, easy to use.
Thermal imaging system background correction servicing unit of the present invention, also can use as the electronic over cap of thermal imaging system camera lens, when not using thermal imaging system, the instruction of opening background correction servicing unit is sent by main control module, identical with principle during background correction, blade is all opened and is covered thermal imaging system camera lens completely, plays the effect of len, can avoid dust, collide with to the damage of camera lens; When needs use thermal imaging system, main control module sends the instruction of closing background correction servicing unit, and blade is all packed up, and exposes thermal imaging system camera lens.
Above only describes ultimate principle of the present invention and preferred implementation, those skilled in the art can make many changes and improvements according to foregoing description, and these changes and improvements should belong to protection scope of the present invention.
Claims (5)
1. a thermal imaging system background correction servicing unit, it is characterized in that: comprise annular shaft collar (1), be arranged at annular rotating disc (3) on shaft collar and identical with the shaft collar center of circle, and to be uniformly distributed between shaft collar (1) and rotating disc (3) and the N number of blade (5) be rotationally connected with on shaft collar (1), N is the positive integer of >=6, described all blades (5) open the rear middle circular hole covering shaft collar (1) completely, pack up the rear middle circular hole exposing shaft collar (1) completely, shaft collar (1) is fixed with the motor (2) driving rotating disc (3) to rotate.
2. thermal imaging system background correction servicing unit according to claim 1, it is characterized in that: described blade (5) is rotationally connected with on shaft collar (1) by bindiny mechanism, bindiny mechanism comprises the blade fixed orifice (6) being arranged at each blade (5) root, be fixed on the blade rotary post (7) on each blade (5) front surface, and be arranged at the upper and rail groove (4) of each blade rotary post (7) corresponding of rotating disc (3), the position of the upper corresponding blade fixed orifice (6) of shaft collar (1) is provided with rotating shaft, blade (5) rotates around the shaft, blade rotary post (7) is arranged in rail groove (4) and also can moves along rail groove, rotated by blade rotary post (7) band moving vane (5) when rotating disc (3) rotates.
3. thermal imaging system background correction servicing unit according to claim 1, is characterized in that: the diameter of shaft collar (1) is greater than the diameter of rotating disc (3); The internal diameter of rotating disc (3) is not less than the internal diameter of shaft collar (1).
4. thermal imaging system background correction servicing unit according to claim 1, it is characterized in that: described blade (5) is root is round and smooth, front end is sharp-pointed tulwar shape, every two adjacent blades are overlapping at neighboring edge place, and all blades open the complete plane of rear formation one.
5. thermal imaging system background correction servicing unit according to claim 2, is characterized in that: described rail groove (4) is arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966350.8A CN105403314A (en) | 2015-12-22 | 2015-12-22 | Background correction auxiliary device of thermal imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966350.8A CN105403314A (en) | 2015-12-22 | 2015-12-22 | Background correction auxiliary device of thermal imaging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105403314A true CN105403314A (en) | 2016-03-16 |
Family
ID=55468941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510966350.8A Pending CN105403314A (en) | 2015-12-22 | 2015-12-22 | Background correction auxiliary device of thermal imaging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403314A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562364A (en) * | 2017-12-25 | 2018-09-21 | 重庆普永科技发展有限公司 | A kind of portable FLIR thermal infrared imagers |
| CN108879353A (en) * | 2018-08-02 | 2018-11-23 | 珠海许继电气有限公司 | A kind of rotary type handle hole plugging device |
| CN112731741A (en) * | 2020-12-31 | 2021-04-30 | 邯郸市索美贸易有限公司 | Loss-proof digital camera protective cover |
| CN115854974A (en) * | 2023-02-21 | 2023-03-28 | 山东省国土测绘院 | Sight distance measuring device for surveying and mapping geography |
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| CN103048051A (en) * | 2012-12-17 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Infrared detector nonuniformity corrector |
| CN203490446U (en) * | 2013-10-12 | 2014-03-19 | 中山联合光电科技有限公司 | Aperture adjusting device of camera |
| CN203688953U (en) * | 2014-02-25 | 2014-07-02 | 中山联合光电科技有限公司 | Aperture adjusting device |
| CN104344896A (en) * | 2014-10-24 | 2015-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | Non-uniformity correction mechanism for infrared optical system |
| CN205209640U (en) * | 2015-12-22 | 2016-05-04 | 山东神戎电子股份有限公司 | Thermal imaging system background correction auxiliary device |
-
2015
- 2015-12-22 CN CN201510966350.8A patent/CN105403314A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048051A (en) * | 2012-12-17 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Infrared detector nonuniformity corrector |
| CN203490446U (en) * | 2013-10-12 | 2014-03-19 | 中山联合光电科技有限公司 | Aperture adjusting device of camera |
| CN203688953U (en) * | 2014-02-25 | 2014-07-02 | 中山联合光电科技有限公司 | Aperture adjusting device |
| CN104344896A (en) * | 2014-10-24 | 2015-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | Non-uniformity correction mechanism for infrared optical system |
| CN205209640U (en) * | 2015-12-22 | 2016-05-04 | 山东神戎电子股份有限公司 | Thermal imaging system background correction auxiliary device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562364A (en) * | 2017-12-25 | 2018-09-21 | 重庆普永科技发展有限公司 | A kind of portable FLIR thermal infrared imagers |
| CN108879353A (en) * | 2018-08-02 | 2018-11-23 | 珠海许继电气有限公司 | A kind of rotary type handle hole plugging device |
| CN112731741A (en) * | 2020-12-31 | 2021-04-30 | 邯郸市索美贸易有限公司 | Loss-proof digital camera protective cover |
| CN115854974A (en) * | 2023-02-21 | 2023-03-28 | 山东省国土测绘院 | Sight distance measuring device for surveying and mapping geography |
| CN115854974B (en) * | 2023-02-21 | 2023-05-09 | 山东省国土测绘院 | Viewing distance measuring device for surveying and mapping geography |
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Application publication date: 20160316 |
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