CN1121608C - Long-distance infrared thermoscope able to fully stabilize object and regulse focus - Google Patents
Long-distance infrared thermoscope able to fully stabilize object and regulse focus Download PDFInfo
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- CN1121608C CN1121608C CN 00126546 CN00126546A CN1121608C CN 1121608 C CN1121608 C CN 1121608C CN 00126546 CN00126546 CN 00126546 CN 00126546 A CN00126546 A CN 00126546A CN 1121608 C CN1121608 C CN 1121608C
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Abstract
The present invention relates to a long-distance infrared thermoscope capable of focusing while fully stabilizing images, which comprises an infrared probe, an error compensation focusing device, a spectroscope and a focusing reflecting mirror which are all arranged along the optical axis of the same system; the center of the reflecting mirror is sheathed with a sighting device; the error compensation focusing device comprises an optical inner cone which can reflect incident light rays for even times; in addition, the present invention is also provided with a focusing handwheel. The thermoscope can amend tilt error generated in moving a focusing device so as to obtain an accurate temperature test; the long-distance infrared thermoscope has better performance as compared with the prior art.
Description
Technical field
The present invention relates to remote middle low temperature target infrared thermometry, be specifically related to a kind of able to fully stabilize object and regulse focus remote infrared thermometer.
Background technology
When distant object that can't be approaching to certain is carried out thermometric, usually adopt remote infrared thermometer to measure its temperature, its measuring process is such: after infrared radiation that distant objects is sent enters the optical system of temperature measurer, after focusing on, drops on the infrared probe optical device, after the window filtering through the infrared probe front, infrared probe is converted to voltage signal with the infrared radiation of given wave band, will be processed into the temperature value of target according to certain radiation law and formula operation after the voltage signal amplification and show again.This has just finished the temperature survey to distant object.Because the distance of various measured targets is different,, focus control must be moved forward and backward along systematic optical axis in order to guarantee that its infrared energy accurately focuses on fixing and sensitive area has only on the infrared probe of 0.2mm * 0.2mm (or littler); The device of motion is each other arranged, just there is tolerance clearance, the error of adding part processing and fit on causes focus control will inevitably produce inclination when mobile, be that a slanted angle θ who is produced by the gap is arranged between the axis of focus control and the systematic optical axis, focus control for common optical mirror composition, the skew of 2 θ or 4 θ will be arranged from the infrared radiation light that wherein reflects, will make the target infrared radiation depart from the sensitive face that is in the infrared probe on the same system optical axis like this, at this moment measured temperature is inaccurate, promptly has measuring error.Here it is, and present countries in the world all are difficult to design and manufacture the main cause of remote infrared thermometer.
Summary of the invention
The object of the present invention is to provide a kind of remote infrared thermometer that can overcome above-mentioned technical disadvantages, the droop error that it is produced in the time of not only moving focusing to far away, close-target is carried out automatically, compensation is completely revised, obtaining accurate measurement result, and has simple in structure, advantage of low manufacturing cost.
Purpose of the present invention can adopt following technical scheme to realize, construct a kind of able to fully stabilize object and regulse focus remote infrared thermometer, comprise infrared probe, focusing mirror, error compensation focus control, light-dividing device and the sighting device installed along same infrared receiving system optical axis, wherein, described error compensation focus control comprises that one can be carried out even reflection and the optics inner cone catoptron that penetrates and make the focus control that can the carry out error compensation focusing handwheel along the systematic optical axis displacement injecting light on its internal chamber wall.Wherein, focusing mirror is used for and will injects the light focusing of entrance pupil and reflex to the error compensation focus control, and described light-dividing device is used for infrared reflection, visible light transmissive from the error compensation focus control.Described infrared probe is positioned at the focal plane place of infrared optical system, is used for the infrared ray of receiving target and carries out opto-electronic conversion, produces and exports electric signal and transfer to the electric system processing.Described sighting device is used for eye-observation and aiming distant place target, described error compensation focus control comprises that one can be carried out even reflection and the focusing optical device that penetrates and the focusing handwheel that the focusing optical device is moved forward and backward along optical axis with the infrared ray of injecting on its internal chamber wall; Described focusing optical device is an optics inner cone catoptron.
In able to fully stabilize object and regulse focus remote infrared thermometer provided by the invention, described spectroscope is a kind ofly can will penetrate the infrared reflection on its minute surface, the optical device of visible light transmissive; Described aiming finder comprises that one one end has the inspection section of cover plate, on the cover plate center line or below respectively have one and observe aperture; An observation eyepiece is housed in the inner chamber of inspection section front end, a graduation mirror is arranged on the focal plane of described observation eyepiece, and below graduation mirror center, a LCD panel is housed; Described inspection section is sleeved on the described focusing mirror.
Implement able to fully stabilize object and regulse focus remote infrared thermometer provided by the invention, the focus control that is adopted is an optics inner cone catoptron that is symmetrical in systematic optical axis.When not tilting to take place, the any two awl lines that are symmetrical in systematic optical axis on the cone equate with the angle of optical axis, when droop error produces, article two, an angle with optical axis in the symmetry awl line can increase, then another angle is corresponding reduces, can prove light in cone according to reflection of light principle and basic mathematical knowledge, the light that penetrates through even reflection back can not change direction because of the inclination of cone, thereby obtains correct temperature-measuring results.
Description of drawings
Fig. 1 is the structural principle synoptic diagram of temperature measurer embodiment of the present invention, and the straight line that has arrow is represented the working direction of light;
Fig. 2 is a structural representation of observing sighting device among Fig. 1;
Fig. 3 is mounted in the aiming graduation mirror structural representation in the finder;
Fig. 4 is droop error compensation principle figure, and solid line is represented the original position of optics cone, and dotted line is represented the position behind the optics cone cant angle theta angle; Have the straight line of arrow and incident and the reflection direction that dotted line is represented light.
Embodiment
With reference to accompanying drawing 1, infrared probe 1, error compensation focus control 2, spectroscope 3, focusing mirror 4 are housed on systematic optical axis OA-OB successively, be equipped with one in the center of described focusing mirror 4 and observe sighting device 5.
Wherein, error compensation focus control 2 comprises an optics inner cone catoptron 21, the inner cone catoptron that promptly adopts optical glass to make, this inner cone catoptron can be eliminated the droop error that produces owing to focusing device in moving axially process, thereby obtain correct temperature-measuring results; Its cone angle is typically provided to 90 °, and its principle of work is referring to Fig. 4, and the infrared ray of injecting in the optics cone can not change direction because of the inclination of optics cone at the infrared ray that penetrates on the inwall of its cavity after the even reflection; The dotted line of band arrow represents that infrared ray still penetrates along former solid line direction after the inner cone surface reflection that droop error is arranged.Focus for ease of mobile optical inner cone catoptron 21, be furnished with focusing handwheel on cone, its focusing rotational angle is not more than 60 °, and one-handed performance need not change hand, and one forwards the position to, the convenient use.
Light-dividing device 3 has the function that the infrared ray and the visible light of target emanation can be separated, it is to be coated with the multilayer optical spectro-film on spectroscopical surface, infrared ray and visible light that the optics spectro-film will be reflected in its surface separate, infrared reflection can be gone out and the through hole by optics inner cone catoptron 21 bottoms projects on the infrared probe 1, the output temperature digital signal is given display board after processing of circuit; Visible light can pass spectro-film and under the effect of the concave mirror of back, and visible light is extended on the graduation runner plate in the sighting device; For the human eye run-home.
Described observation sighting device 5 comprises that is observed a cylinder 51, is provided with a cover plate at an end of cylinder, because infrared light path and visible light light path are fully coaxial, at this moment the central authorities in the visual field can produce a unavoidable shadow; This sighting device has adopted the shadow technology for eliminating, on observe cylinder 51 cover plate centers (being the emergent pupil face of whole optical system) or below be provided with one and observe aperture 52 or 53, when aiming, can avoid the shadow of visual field central authorities; Can also be arranged on described observation aperture with the cover plate center be the center of circle, is on the arbitrary position on the circumference of radius to the distance at aperture center with this center of circle; An aiming graduation mirror 54 and eyepiece 56 are housed in the inner chamber of cylinder 51 front ends,, a LCD panel 55 are housed below graduation mirror center line for ease of directly seeing test result; Can make and in aiming, just can see test result.
During use, temperature measurer is aimed at test target, the light that comes from target emanation reflexes to light on the optics cone 2 of error compensation focus control by focusing mirror 4, after two reflecting surface correction droop errors of optics cone, be mapped on the spectroscope 3, spectroscope is incident upon in the infrared probe 1 infrared ray infrared reflection and the through hole by the optics cone base after separately infrared ray and visible light, infrared radiation with given wave band after filtering converts voltage signal to, becomes the temperature value of target to show on LCD panel through amplification, calculation process again.The visible light that branches away from spectroscope is sent on the aiming graduation mirror of sighting device, uses for run-home; Easy to operate, advantages such as test data accurate, low cost of manufacture that the present invention has are the better remote infrared thermometers of a kind of performance.
Claims (5)
1, a kind of remote infrared thermometer of fully surely picture, it is characterized in that, comprise infrared probe (1), focusing mirror (4), error compensation focus control (2), light-dividing device (3) and the sighting device (5) installed along same infrared receiving system optical axis, wherein, described error compensation focus control (2) comprises that one can be carried out even reflection and the optics inner cone catoptron (21) that penetrates and make the focus control (2) that can the carry out error compensation focusing handwheel along the systematic optical axis displacement injecting light on its internal chamber wall.
According to the remote infrared thermometer of the described fully surely picture of claim 1, it is characterized in that 2, described light-dividing device (3) is to be coated with the multilayer optical spectro-film on spectroscopical surface.
3, according to the remote infrared thermometer of the described fully surely picture of claim 1, it is characterized in that, described sighting device (5) comprises that one one end has the inspection section of cover plate (51), on the cover plate center line or below have one and observe aperture (52) or (53); An aiming graduation mirror (54) and eyepiece (56) are housed in the inner chamber of inspection section front end, below described graduation mirror (54) center line, a LCD panel (55) are housed.
4, according to the remote infrared thermometer of the described fully surely picture of claim 3, it is characterized in that: it is the center of circle that described observation aperture (52) can also be arranged on the cover plate center, is on the arbitrary position on the circumference of radius to the distance at aperture center with this center of circle.
According to the remote infrared thermometer of claim 1 or 3 described fully surely pictures, it is characterized in that 5, described sighting device (5) is sleeved on the described focusing mirror (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126546 CN1121608C (en) | 2000-09-20 | 2000-09-20 | Long-distance infrared thermoscope able to fully stabilize object and regulse focus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126546 CN1121608C (en) | 2000-09-20 | 2000-09-20 | Long-distance infrared thermoscope able to fully stabilize object and regulse focus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1343876A CN1343876A (en) | 2002-04-10 |
| CN1121608C true CN1121608C (en) | 2003-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00126546 Expired - Fee Related CN1121608C (en) | 2000-09-20 | 2000-09-20 | Long-distance infrared thermoscope able to fully stabilize object and regulse focus |
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| CN (1) | CN1121608C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873136A (en) * | 2017-03-13 | 2017-06-20 | 湖南途朗光电科技有限公司 | UV, visible light complex imaging camera lens and UV, visible light complex imaging instrument |
| CN108519653A (en) * | 2018-04-03 | 2018-09-11 | 中国工程物理研究院激光聚变研究中心 | A kind of infrared light focusing device based on annular mirror |
| CN111024242A (en) * | 2019-12-13 | 2020-04-17 | 浙江大立科技股份有限公司 | Thermal infrared imager and continuous automatic focusing method thereof |
| CN114414063B (en) * | 2021-12-17 | 2024-01-19 | 杭州麦乐克科技股份有限公司 | Dual focusing infrared high temperature measuring device |
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2000
- 2000-09-20 CN CN 00126546 patent/CN1121608C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1343876A (en) | 2002-04-10 |
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