CN2290043Y - Infrared thermo detector for large distance small target - Google Patents
Infrared thermo detector for large distance small target Download PDFInfo
- Publication number
- CN2290043Y CN2290043Y CN 96238756 CN96238756U CN2290043Y CN 2290043 Y CN2290043 Y CN 2290043Y CN 96238756 CN96238756 CN 96238756 CN 96238756 U CN96238756 U CN 96238756U CN 2290043 Y CN2290043 Y CN 2290043Y
- Authority
- CN
- China
- Prior art keywords
- large distance
- small target
- primary mirror
- distance
- thermo detector
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an infrared thermo detector for a large distance and a small target, which is composed of a casing, a secondary mirror, a primary mirror, a spectroscopic plate, a reticle, a field lens, an ocular, a pair of protective glasses and an immersion element. The secondary mirror is arranged on the most front end of the infrared thermo detector for a large distance and a small target; the surface of the primary mirror corresponding to one surface of the secondary mirror is an axiolitic concave; the middle of the infrared thermo detector for a large distance and a small target is provided with a loophole; the spectroscopic plate is tilted 45 DEG to the primary mirror; the reticle, the field lens, the ocular and the protective glasses are orderly arranged on the infrared thermo detector for a large distance and a small target as the required distance of optics; the immersion element is arranged at the position and the distance of corresponding focus of the lower side of the spectroscopic plate; the utility model is characterized in that a combined focal length is obtained by that the diameter of a sensitive element multiplies the distance between a being measured object and a receiver, divides the diameter of the being measured object and then multiplies three; an aperture is obtained by that the diameter of the being measured object divides the combined focal length; the surface shape of the primary mirror is obtained by that-800XX subtracts-0.29296875 and then multiplies X<2>. Because the utility model has the measure function of a more large distance, the infrared thermo detector for a large distance and a small target can play the important role of the safe operation and the detecting of superhigh pressure power transmission electric network, and can prevent the damage of the electric network caused by overheating. The infrared thermo detector for a large distance and a small target is the research production of important value.
Description
A kind of remote little target infrared thermometer that is used for the telemeasurement of little hot body target temperature.
Industrial sectors such as electric power, chemical industry, machining, metallurgy often need carry out telemeasurement to the temperature of little hot body target.Infrared thermometer in the past, though can carry out the measurement of certain distance, often can not reach the requirement of little target and longer distance, for example to the measurement of ∮ 40mm hot body, infrared thermometer measuring distance in the past can only reach 25～30m, can not satisfy the requirement of actual use.
The purpose of this utility model is to utilize aspheric surface third order aberration theory, designs a kind of measuring distance and can reach 55～65m, remote little target infrared thermometer, when satisfying actual the use to the requirement of longer distance.
The utility model is by shell; secondary mirror; primary mirror; beam-splitter; graticule; field lens; eyepiece; protective glass and submergence element are formed; secondary mirror is arranged on foremost; primary mirror simultaneously is the ellipsoid concave surface to secondary mirror; middle Dai Youyi light hole; beam-splitter is towards 45 ° of settings of primary mirror inclination; successively by optics required separation distance graticule be set thereafter; field lens; eyepiece and protective glass; the submergence element is arranged on the below of beam-splitter over against the position of focus point with apart from last; it is characterized in that combined focal length is that sensitive first diameter takes advantage of testee to be multiplied by 3 to the distance between the receiver again except that the testee diameter; the aperture is that combined focal length is multiplied by 0.2332089, and the face shape of primary mirror deducts-0.29296875 and takes advantage of X for-800 * X
2
Combined focal length means the focal length that secondary mirror 1 is combined to primary mirror 2.
Sensitive unit means an element that is used for sensible temperature that is added in the germainium lens bottom surface in the submergence element.
The aperture refers to the clear aperature in main footpath; Main mirror face mainly refers to the shape of ellipsoid concave surface, and the submergence element comprises germainium lens and sensor, is handled by electronic circuit again.
The course of work of the present utility model is as follows: when the utility model is faced measured object, primary mirror 2 is at first received infrared ray, give secondary mirror 1 with infrared reflection then, secondary mirror 1 is given beam-splitter 5 with infrared reflection, beam-splitter is again with infrared reflection and focus on submergence element 4, submergence element 4 becomes light signal into electric signal by light activated element, handles through electronic circuit, demonstrates the temperature of tested hot body.
The utility model is owing to possess the measurement function of farther distance, so can be the safe operation and the detection of superelevation force feed electricity electrical network plays an important role, can prevent that electrical network from damaging because of overheated, be an achievement in research with important value, is with a wide range of applications and market outlook.
Accompanying drawing is an optical texture synoptic diagram of the present utility model, also is that specification digest is with scheming.Each label is respectively among the figure: 1 secondary mirror, 2 primary mirrors, 3 light holes, 4 submergence elements, 5 beam-splitters, 6 graticules, 7 field lenses, 8 eyepieces, 9 protective glasses.
Now in conjunction with the accompanying drawings, providing an embodiment is described further the utility model
Embodiment:
With following parameters is measurement index of the present utility model:
1. measuring distance 55～65m
2. testee is not more than ∮ 40mm.
3. from the minimum sensitive elemental area of element and actual to require to determine instantaneous field of view be 2W=0.01289 °
4. service band is 2-14 μ m, and temperature-measuring range is 0-500 ℃.
5. I is differentiated the temperature difference＜4 ℃, and measuring accuracy＜± 2% is for finishing the designed the utility model of above-mentioned measurement purpose, combined focal length f '=800mm.Relative aperture
Primary mirror ellipsoid equation y
2=-800x-0.29296875x
2, optical system structure parameter such as following table:
The optical system structure parameter
Secondary mirror 1 diameter 65.0mm, thick 5mm is 112.4mm apart from the distance of primary mirror 2; Primary mirror 2 diameter 204mm; The thick 9.8mm in edge is apart from beam-splitter 5 central point 17.6mm; Beam-splitter 5 is 36 * 26 ellipses, and thick 1.5mm is apart from graticule 628.86mm; Graticule 6 diameter 22mm, thick 2mm, apart from field lens 711.15mm, field lens 7 diameters are 24mm, the thick 3.3mm of convex lens is apart from eyepiece 8 35.55mm; Eyepiece 8 is convex lens, diameter 20mm, and thick 2.5mm, apart from protective glass 9 26.8mm, protective glass 9 diameter 10mm, thick 1mm.
| Title | Radius | Unified | Clear aperture | Material |
| Secondary mirror | -133.35 | ∮65 | ∮62 | K9 |
| Primary mirror | Vertex radius R1=-400 | ∮204 | ∮200 | |
| The face shape equation of primary mirror | Y 2＝-800x-0.29296875X 2 | k9 | ||
Claims (1)
- A kind of remote little target infrared thermometer that is used for the telemeasurement of little hot body target temperature; by shell; secondary mirror; primary mirror; beam-splitter; graticule; field lens; eyepiece; protective glass and submergence element are formed; it is characterized in that: secondary mirror is arranged on foremost; primary mirror simultaneously is the ellipsoid concave surface to secondary mirror; middle Dai Youyi light hole; beam-splitter is towards 45 ° of settings of primary mirror inclination; successively by optics required separation distance graticule be set thereafter; field lens; eyepiece and protective glass; the submergence element is arranged on the below of beam-splitter over against the position of focus point with apart from last; it is characterized in that combined focal length is that sensitive first diameter takes advantage of testee to be multiplied by 3 to the distance between the receiver again except that the testee diameter; the aperture is that combined focal length is multiplied by 0.2332089, and the face shape of primary mirror deducts-0.29296875 and takes advantage of X for-800 * X 2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238756 CN2290043Y (en) | 1996-10-16 | 1996-10-16 | Infrared thermo detector for large distance small target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238756 CN2290043Y (en) | 1996-10-16 | 1996-10-16 | Infrared thermo detector for large distance small target |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2290043Y true CN2290043Y (en) | 1998-09-02 |
Family
ID=33913974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238756 Expired - Fee Related CN2290043Y (en) | 1996-10-16 | 1996-10-16 | Infrared thermo detector for large distance small target |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2290043Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809810A (en) * | 2012-07-31 | 2012-12-05 | 绍兴精功机电有限公司 | Telescope applicable to non-contact type thermodetector |
-
1996
- 1996-10-16 CN CN 96238756 patent/CN2290043Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809810A (en) * | 2012-07-31 | 2012-12-05 | 绍兴精功机电有限公司 | Telescope applicable to non-contact type thermodetector |
| CN102809810B (en) * | 2012-07-31 | 2015-09-23 | 绍兴精功机电有限公司 | Be applicable to the telescope of non-contact type thermodetector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |