CN1975295A - Liquid nitrogen metal Dewar for focal plane detector imaging test - Google Patents
Liquid nitrogen metal Dewar for focal plane detector imaging test Download PDFInfo
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- CN1975295A CN1975295A CN 200610163824 CN200610163824A CN1975295A CN 1975295 A CN1975295 A CN 1975295A CN 200610163824 CN200610163824 CN 200610163824 CN 200610163824 A CN200610163824 A CN 200610163824A CN 1975295 A CN1975295 A CN 1975295A
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- dewar
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Abstract
A kind of liquid nitrogen metal Dewar for focal plane detector imaging test, it can get different response wave band, adapt to different devices for the performance and imaging tests, the main part and the window connect the connection board by the facilitating dismounting way, forming a test Dewar with different response band, external the main part weld with vacuum valve, with reserve bottle welded inside, the end surface of reserve bottle was cold-charged carrier surface with staircase structure, the detector chip is installed on cold-charged carrier surface, the cold shield is directly fixed through screws on cold-charged carrier surface, on the windows above cold-charged carrier surface connects window glass; As a result of introduction of the mature process and the standard unit, it reduces the development difficulties; reliable and easy to use as the flexible film cables are used as electrode leading-out wires; choose whether or not to use cold shield according to actual needs, the cold shield is reliable and easy to dismount with liquid nitrogen temperature background; the staircase cold-charged carrier surface not only provides device and liquid nitrogen temperature background of the cold shield, but also reduce heat consumption of Dewar itself.
Description
Technical field
The present invention relates to a kind of liquid nitrogen metal Dewar for focal plane detector imaging test.
Background technology
In the development of refrigeration mode infrared focal plane detector, production process, Devices Characteristics research, performance test, product screening, imaging etc. all be unable to do without low temperature environment, Dewar then is a kind ofly not only can provide low temperature environment, still a kind ofly can provide the infrared window that is fit to the explorer response wave band, the cold screen of restriction background visual field and the requisite device of signal of telecommunication transmit leg.At present, the Dewar overwhelming majority commonly used is a liquid nitrogen metal Dewar, and the glass Dewar is eliminated substantially, and liquid nitrogen metal Dewar commonly used is integrative-structure basically, promptly can open except that window and pick and place the detector, remainder is all soldered or be bonded as one and non-dismountable.In long-time use, because the pollution of vacuum environment makes the reduction of Dewar performance, have influence on result of use and scrap even, cause waste; Its two, the metal Dewar of integral structure all has suitable technology difficulty and strict specification requirement on the arranging of cold screen setting and transmit leg, and lead-in wire can't be repaired after fractureing; Its three, the metal Dewar of integral structure owing to gone between and the restriction of structure, on the cold charge section or cold screen is not set, or one of specialized designs is fixed on the cold screen of liquid nitrogen on the cold charge section, complex structure, difficulty in process; They are four years old, owing to need be used in combination with test macro usually during detector imaging test, and the metal Dewar overwhelming majority commonly used is circular or similar circular housing structure, thereby during independent the use, circular or similar circular housing causes the very inconvenience of clamping and location, and is difficult for steadily placing on the table.
Summary of the invention
The objective of the invention is to propose a kind of liquid nitrogen metal Dewar for focal plane detector imaging test, it can obtain different response wave band, the adaptation different components is made performance test and imaging test.Purpose of the present invention is achieved through the following technical solutions: main body links to each other with the mode of connecting plate by easy disassembly respectively with forms, form a test Dewar with different response wave band, main body outside weldings vacuum valve, interior welds has the liquid storage inner bag, the end face of liquid storage inner bag is the cold charge section that is hierarchic structure, detector chip is placed on the cold charge section, and cold screen directly is fixed on the cold charge section by screw, is positioned on the forms of cold charge section top to be connected with window glass.
Adopt bolt to connect into three segments combined square structures between described main body, connecting plate and forms three parts, between each coupling part rubber seal is arranged.
Described connecting plate is Dewar assembling and the benchmark externally installed and used, also is the connector of contact conductor of Dewar and the fixed pedestal of vacuum valve.
Described liquid storage inner bag is positioned at body interior and is weldingly connected by back-up block and keeps relative position relation, form the open type main body that keeps vacuum and refrigeration, liquid storage inner bag bottom is communicated with the bottom surface of main body by interior pipe, is furnished with some radiation shields between the lateral wall of interior pipe and the body interior.
The stepped cold charge section of described liquid storage inner bag is convenient to go between and is arranged and the installation of cold screen, is the liquid nitrogen background installed surface of device and cold screen, has reduced the hear rate of Dewar self again.
Window glass on the described Dewar forms adopts the infrared radiant material of response different-waveband to process.
The contact conductor of described Dewar adopts special-purpose FPC flexible film cables, is installed on the cold charge section in the middle of it, and two ends are passed main body and are fixed on the connector of connecting plate both sides with modular electrical connector.
The present invention has reduced the development difficulty owing to adopted maturation process and standard component; Adopt flexible film cables as electrode outlet line, dependable performance, easy to use; Can select whether to use cold screen according to actual needs, cold screen easy accessibility is reliable and have a liquid nitrogen temperature background; Stepped cold charge section both provided the liquid nitrogen temperature background installed surface of device and cold screen, had reduced the hear rate of Dewar self again; Be installed in the integrated vacuum valve on the main body, do not need to carry out exhaust and vacuum maintenance for a long time by external tool; Dewar integral body is square appearance, puts steadily, and the clamping accurate positioning is reliable, uses and easy accessibility; Dewar each several part combination free is convenient to posterior maintenance, is suitable for long-term use; Simple in structure, preparation technology is convenient, interchangeability and highly versatile, thereby has determined that its lead time is short, cost is low, dependable performance.
Description of drawings
Fig. 1 is a surface structure schematic diagram of the present invention.
Fig. 2 is that A-A of the present invention is to profile.
Fig. 3 is that B-B of the present invention is to profile.
The specific embodiment
Be described further below in conjunction with accompanying drawing and embodiment, but protection scope of the present invention is not limited to accompanying drawing and embodiment.
As shown in the figure, the metal Dewar that the present invention proposes mainly is made of main body 1, connecting plate 2, forms 3 and flexible film cables 16, adopt bolt and rubber seal 10 to connect into three segments combined structures between main body 1, connecting plate 2 and forms 3 three parts, form a test Dewar with different response wave band.Easy accessibility, flexible between the each several part, independent separately after taking apart.
Connecting plate 2 is reference components of main body 1 and forms 3 combinations, also is the go between fixed pedestal of 16 external interfaces of Dewar, is again simultaneously the axial benchmark that Dewar is externally installed.
Be bonded with window glass 4 on the forms 3 of Dewar, for the detector of the different response wave band of test, forms 3 adopt aluminium alloys to make, the inner surface polishing, and window glass 4 adopts the infrared radiant material of response different-wavebands, processes as germanium etc.The window glass 4 that Dewar forms 3 provide is a part that forms the vacuum chamber between main body 1 and the inner bag 13 and keep vacuum, still is another benchmark that Dewar is externally installed simultaneously.
The end face of liquid storage inner bag 13 is hierarchic structure, is the cold charge section 11 of Dewar, is convenient to go between 16 arrange and cold screen 9 is installed, and detector chip is placed on the cold charge section 11, and cold screen 9 directly is fixed on the cold charge section 11 by screw.
The lateral wall of liquid storage inner bag 13 links to each other by back-up block 12 with main body 1 inside and keeps relative position relation, and its bottom is communicated with the bottom surface of main body 1 by interior pipe 14, is furnished with some radiation shields 15 between the lateral wall of interior pipe 14 and main body 1 inside.The main body 1 of Dewar, liquid storage inner bag 13 and interior pipe 14, radiation shield 15 all adopt stainless steel material to make, handle through mechanical precise light brilliant polish on the surface, back-up block 12 usefulness bakelites are made, cold screen 9 usefulness aluminium alloys are made, outer surface is handled through mechanical precise light brilliant polish equally, and the inner surface black oxidation is handled to absorb veiling glare and reduced reflection.
The electrode outlet line 16 of Dewar adopts special-purpose FPC flexible film cables, is installed on the cold charge section 11 in the middle of it, and two ends are passed main body 1 usefulness modular electrical connector 6 and are fixed on the connector of connecting plate both sides.The cable row who makes with FPC technology has 100 lead-out wires to form the different pins of detector, is electrically connected on the Dewar external circuits.Cable manufacture craft maturation, assembling are easily.
Integrated vacuum valve on the main body 1 is an independent structures body, is made of valve body 5, trim ring 7 and knob 8 etc., and standard interface is arranged on it, and it need not just can directly open or close to carry out exhaust and vacuum maintenance for a long time by external tool.
Claims (7)
1, a kind of liquid nitrogen metal Dewar for focal plane detector imaging test, mainly comprise Dewar main body (1), the inner bag of splendid attire liquid nitrogen (13), the Dewar forms (3) of window glass are housed, contact conductor of Dewar (16) and vacuum valve (5), it is characterized in that: main body (1) links to each other with the mode of connecting plate (2) by easy disassembly respectively with forms (3), form a test Dewar with different response wave band, main body (1) outside weldings vacuum valve (5), interior welds has liquid storage inner bag (13), the end face of liquid storage inner bag (13) is the cold charge section (11) that is hierarchic structure, detector chip is placed on the cold charge section (11), cold screen (9) directly is fixed on the cold charge section (11) by screw, is positioned on the forms (3) of cold charge section (11) top to be connected with window glass (4).
2, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1, it is characterized in that: adopt bolt to connect into three segments combined square structures between main body (1), connecting plate (2) and forms (3) three parts, rubber seal (10) is arranged between each coupling part.
3, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1, it is characterized in that: connecting plate (2) is Dewar assembling and the benchmark externally installed and used, also is the connector (6) of contact conductor (16) of Dewar and the fixed pedestal of vacuum valve (5).
4, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1, it is characterized in that: liquid storage inner bag (13) is positioned at that main body (1) is inner to be weldingly connected and to keep relative position relation by back-up block (12), form the open type main body that keeps vacuum and refrigeration, liquid storage inner bag (13) bottom is communicated with by the bottom surface of interior pipe (14) with main body (1), is furnished with some radiation shields (15) between the lateral wall of interior pipe (14) and main body (1) inside.
5, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1, it is characterized in that: the stepped cold charge section (11) of liquid storage inner bag (13) is convenient to that lead-in wire (16) is arranged and cold screen (9) is installed, be the liquid nitrogen background installed surface of device and cold screen (9), reduced the hear rate of Dewar self again.
6, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1 is characterized in that: the window glass (4) on the Dewar forms (3) adopts the infrared radiant material of response different-waveband to process.
7, liquid nitrogen metal Dewar for focal plane detector imaging test according to claim 1, it is characterized in that: the contact conductor of Dewar (16) adopts special-purpose FPC flexible film cables, be installed on the cold charge section (11) in the middle of it, two ends are passed main body and are fixed on the connector of connecting plate (2) both sides with modular electrical connector (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101638246A CN100451499C (en) | 2006-12-20 | 2006-12-20 | Liquid nitrogen metal Dewar for focal plane detector imaging test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101638246A CN100451499C (en) | 2006-12-20 | 2006-12-20 | Liquid nitrogen metal Dewar for focal plane detector imaging test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1975295A true CN1975295A (en) | 2007-06-06 |
| CN100451499C CN100451499C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101638246A Expired - Fee Related CN100451499C (en) | 2006-12-20 | 2006-12-20 | Liquid nitrogen metal Dewar for focal plane detector imaging test |
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| CN (1) | CN100451499C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541775C (en) * | 2008-06-12 | 2009-09-16 | 中国科学院上海技术物理研究所 | Pin configuration between a kind of low temperature cold platform and the room temperature outer housing and method |
| CN102928088A (en) * | 2012-11-01 | 2013-02-13 | 中国科学院上海技术物理研究所 | Poly-lens profound hypothermia infrared detector pipe casing structure packaged in Dewar |
| CN103557943A (en) * | 2013-11-05 | 2014-02-05 | 北京仿真中心 | Infrared scene simulation device |
| CN112540196A (en) * | 2020-11-06 | 2021-03-23 | 中国电子科技集团公司第十一研究所 | Connecting device for testing infrared detector chip |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404016A (en) * | 1984-08-31 | 1995-04-04 | Santa Barbara Research Center | Dewar detector assembly |
| JP2961619B2 (en) * | 1989-06-21 | 1999-10-12 | 株式会社日立製作所 | Cryostat with cooling means |
| CN2240143Y (en) * | 1995-11-24 | 1996-11-13 | 中国科学院上海技术物理研究所 | Variable background refrigeration liquid nitrogen metal dewar bottle for infrared detector |
| CN2322100Y (en) * | 1998-01-07 | 1999-06-02 | 中国科学院上海技术物理研究所 | Liquid nitrogen metal Dewar for focal plane device |
| CN1257373C (en) * | 2003-12-19 | 2006-05-24 | 上海交通大学 | Adjustable distance liquid nitrogen metal dewar for high temperature super conductive quantum interferometer |
-
2006
- 2006-12-20 CN CNB2006101638246A patent/CN100451499C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541775C (en) * | 2008-06-12 | 2009-09-16 | 中国科学院上海技术物理研究所 | Pin configuration between a kind of low temperature cold platform and the room temperature outer housing and method |
| CN102928088A (en) * | 2012-11-01 | 2013-02-13 | 中国科学院上海技术物理研究所 | Poly-lens profound hypothermia infrared detector pipe casing structure packaged in Dewar |
| CN103557943A (en) * | 2013-11-05 | 2014-02-05 | 北京仿真中心 | Infrared scene simulation device |
| CN103557943B (en) * | 2013-11-05 | 2016-08-24 | 北京仿真中心 | A kind of Infrared scene simulation with image device |
| CN112540196A (en) * | 2020-11-06 | 2021-03-23 | 中国电子科技集团公司第十一研究所 | Connecting device for testing infrared detector chip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100451499C (en) | 2009-01-14 |
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Assignee: Yunnan KIRO-CH Photonics Co., Ltd. Assignor: Kunming Inst. of Physics Contract record no.: 2012530000038 Denomination of invention: Liquid nitrogen metal Dewar for focal plane detector imaging test Granted publication date: 20090114 License type: Exclusive License Open date: 20070606 Record date: 20120702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20151220 |
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