CN2663983Y - Thermoelectric refrigeration type multiband infrared detector - Google Patents
Thermoelectric refrigeration type multiband infrared detector Download PDFInfo
- Publication number
- CN2663983Y CN2663983Y CN 200320122773 CN200320122773U CN2663983Y CN 2663983 Y CN2663983 Y CN 2663983Y CN 200320122773 CN200320122773 CN 200320122773 CN 200320122773 U CN200320122773 U CN 200320122773U CN 2663983 Y CN2663983 Y CN 2663983Y
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- refrigerating unit
- infrared
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Abstract
The utility model discloses a thermoelectric refrigeration type multiband infrared detector for infrared gas analyzer and infrared gas alarming, which comprises a pipe shell comprises a pipe base and a pipe cap with an infrared window for charging of inert gas in the middle. A plurality of signal introducing pins and an air extraction opening are arranged at the bottom of the pipe base. A sleeve with a syntaxis lens is arranged outside the pipe cap. A thermoelectric refrigerator is arranged inside the pipe base. The utility model is characterized in that a plurality of detector chips are arranged on the cold face of the thermoelectric refrigerator, a light filtering patch with different band connection is arranged on each chip, the light filtering patch is tightly pasted on the surface of the detector chip and a thermal sensitive resistance is arranged on the cold face to measure the working temperature of the chip. The structure has the advantages that the utilization numbers of the band connection light filtering patch and the working temperature light filtering patch are reduced by times, thereby benefiting for reducing the cost of instrument and improving performance.
Description
Technical field
The utility model relates to infrared eye, specifically is meant a kind of thermoelectric cooling type multiband infrared eye that is used for gas analysis and gas alarm.
Background technology
Infrared eye is the core component of infrared gas analyzer device and infrared-gas alarm, when reality is used, often needs multiple band detector multiple gases to be surveyed comparative analysis.Usually way is at the preposition optical filter wheel of detector, embeds the bandpass filter at the gas with various characteristic absorption band on the optical filter wheel, and by the rotation of optical filter wheel, detector alternately receives the radiation that different air chambers come, and reaches the function of multiple band detector.The shortcoming of this way is: in order to improve the modulating frequency of detection, often need many times optical filter, the instrument cost that many times of optical filters bring unevenness high and that survey is not one of preferred reason of instruments design person.
Summary of the invention
In order to overcome some problems that existing infrared eye brings to the user, the purpose of this utility model provides a kind of optical filter number that can reduce at double and surveys inhomogeneity multiband infrared eye with the raising instrument.
Summary of the invention
Multiband infrared eye of the present utility model comprises: the shell 4 of filling with inert gas in the middle of the pipe cap 3 of base 1 and band infrared window 2 constitutes, a plurality of signal leading foots 5 and a bleeding point 6 are arranged at the bottom of the base, pipe cap has the sleeve 8 of a band plus lens 7 outward, sleeve and pipe cap are spirally connected, and make infrared window and plus lens on same axle.In shell 4, be equipped with thermoelectric refrigerating unit 9 on the base, the hot side 901 of thermoelectric refrigerating unit contacts with base, be equipped with a plurality of detector chips 10 on the huyashi-chuuka (cold chinese-style noodles) 902 of thermoelectric refrigerating unit, the logical optical filter 11 of a slice different band is respectively arranged on each chip, and optical filter sticks on the support 12, and will guarantee that optical filter is close to the detector chip surface, support is the huyashi-chuuka (cold chinese-style noodles) edge of putting in thermoelectric refrigerating unit, also has the thermistor 13 of measured chip working temperature on the huyashi-chuuka (cold chinese-style noodles).
The beneficial effects of the utility model are:
1. reduced the use amount of optical filter at double, reduced the instrument producer's cost and improved the homogeneity that instrument is surveyed.
2. because detector chip is to be placed on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric refrigerating unit, optical filter is to be close to the detector chip surface, has reduced the working temperature of optical filter, can reduce the interference of background stray light by a relatively large margin.
3. each chip has independent optical filter, has reduced each other and has crosstalked, and has improved the detection sensitivity of device.
Description of drawings
Fig. 1 is a structural profile synoptic diagram of the present utility model.
Embodiment
Be example with the two-band infrared detector below, in conjunction with the accompanying drawings embodiment of the present utility model be described in further detail:
See Fig. 1, adopt the temperature control die Bonder that the hot side 901 of thermoelectric refrigerating unit 9 is sticked on the base 1, paste two film explorer chips 10 on the huyashi-chuuka (cold chinese-style noodles) 902, then support 12 is sticked on the huyashi-chuuka (cold chinese-style noodles) 902, the optical filter that two different band are logical sticks on respectively on the support 12, and corresponding one by one with chip, be close to chip.Thermistor 13 with the measured chip working temperature sticks on the huyashi-chuuka (cold chinese-style noodles) 902 again, and the pipe cap 3 of band infrared window 2 and base 1 sealing, the bleeding point 6 by base 1 vacuumizes filling with inert gas sealing again.The signal of two chips 10 is connected with leading foot 5 by lead with thermistor 13.To be spirally connected with pipe cap 3 with the sleeve 8 of plus lens 7 at last, and regulate the focal length of lens 7 by the screw thread between them.
The infrared alarm that detector of the present utility model successfully is used for the detection of vehicle exhaust CO (4.67um), CH4 (3.43um) and oil field reference channel (3.0um), CH4 (3.43um) gas leakage detects.
Claims (2)
1. thermoelectric cooling type multiband infrared eye, comprise: the pipe cap (3) of base (1) and band infrared window (2) constitutes middle shell (4) towards inert gas, a plurality of chip signal leading foots (5) and a bleeding point (6) are arranged at the bottom of the base, pipe cap has the sleeve (8) of a band plus lens (7) outward, sleeve (8) is spirally connected with pipe cap (3), and make infrared window (2) and plus lens (7) on same axle, be equipped with thermoelectric refrigerating unit (9) on the base, the hot side of thermoelectric refrigerating unit (901) contacts with base (1) face, it is characterized in that:
Be equipped with a plurality of detector chips (10) on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric refrigerating unit (902), each respectively has the logical optical filter (11) of a slice different band above chip, optical filter sticks on the support (12), and to guarantee that optical filter and chip be close to, support is huyashi-chuuka (cold chinese-style noodles) (902) edge of putting in thermoelectric refrigerating unit.
2. according to a kind of thermoelectric cooling type multiband infrared eye of claim 1, it is characterized in that: on the huyashi-chuuka (cold chinese-style noodles) of said thermoelectric refrigerating unit (902), also have the thermistor (13) of measured chip working temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200320122773 CN2663983Y (en) | 2003-12-24 | 2003-12-24 | Thermoelectric refrigeration type multiband infrared detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200320122773 CN2663983Y (en) | 2003-12-24 | 2003-12-24 | Thermoelectric refrigeration type multiband infrared detector |
Publications (1)
Publication Number | Publication Date |
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CN2663983Y true CN2663983Y (en) | 2004-12-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 200320122773 Expired - Fee Related CN2663983Y (en) | 2003-12-24 | 2003-12-24 | Thermoelectric refrigeration type multiband infrared detector |
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CN (1) | CN2663983Y (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102768074A (en) * | 2012-07-25 | 2012-11-07 | 北京华铁能信科技有限公司 | Multi-lattice detector for photons with intermediate and far infrared wavelengths |
CN102778297A (en) * | 2012-08-15 | 2012-11-14 | 电子科技大学 | Integrated optical packaging structure of infrared detector |
CN105552095A (en) * | 2015-12-17 | 2016-05-04 | 中国科学技术大学 | Non-vacuum thermoelectric refrigeration device used for area array CCD |
CN107576628A (en) * | 2017-05-01 | 2018-01-12 | 无锡迅杰光远科技有限公司 | Milk powder classification and determination system and method based on near-infrared spectrum technique |
CN109164057A (en) * | 2018-10-12 | 2019-01-08 | 北京环境特性研究所 | The infrared multi-spectral imaging remote sense monitoring system of chemical gas, device and method |
CN118032131A (en) * | 2024-04-12 | 2024-05-14 | 西安博康电子有限公司 | Wide-angle pyroelectric infrared sensor |
-
2003
- 2003-12-24 CN CN 200320122773 patent/CN2663983Y/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102768074A (en) * | 2012-07-25 | 2012-11-07 | 北京华铁能信科技有限公司 | Multi-lattice detector for photons with intermediate and far infrared wavelengths |
CN102778297A (en) * | 2012-08-15 | 2012-11-14 | 电子科技大学 | Integrated optical packaging structure of infrared detector |
CN105552095A (en) * | 2015-12-17 | 2016-05-04 | 中国科学技术大学 | Non-vacuum thermoelectric refrigeration device used for area array CCD |
CN105552095B (en) * | 2015-12-17 | 2018-03-06 | 中国科学技术大学 | A kind of antivacuum thermoelectric cooling unit for area array CCD |
CN107576628A (en) * | 2017-05-01 | 2018-01-12 | 无锡迅杰光远科技有限公司 | Milk powder classification and determination system and method based on near-infrared spectrum technique |
CN109164057A (en) * | 2018-10-12 | 2019-01-08 | 北京环境特性研究所 | The infrared multi-spectral imaging remote sense monitoring system of chemical gas, device and method |
CN118032131A (en) * | 2024-04-12 | 2024-05-14 | 西安博康电子有限公司 | Wide-angle pyroelectric infrared sensor |
CN118032131B (en) * | 2024-04-12 | 2024-06-25 | 西安博康电子有限公司 | Wide-angle pyroelectric infrared sensor |
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Legal Events
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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 |