DE1496499A1 - Method for the vacuum-tight connection of infrared-permeable windows with the housing of an infrared detector - Google Patents
Method for the vacuum-tight connection of infrared-permeable windows with the housing of an infrared detectorInfo
- Publication number
- DE1496499A1 DE1496499A1 DE19631496499 DE1496499A DE1496499A1 DE 1496499 A1 DE1496499 A1 DE 1496499A1 DE 19631496499 DE19631496499 DE 19631496499 DE 1496499 A DE1496499 A DE 1496499A DE 1496499 A1 DE1496499 A1 DE 1496499A1
- Authority
- DE
- Germany
- Prior art keywords
- infrared
- window
- opening
- housing
- vacuum
- 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
Links
- 238000000034 method Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- LYQFWZFBNBDLEO-UHFFFAOYSA-M caesium bromide Chemical compound [Br-].[Cs+] LYQFWZFBNBDLEO-UHFFFAOYSA-M 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- PGAPATLGJSQQBU-UHFFFAOYSA-M thallium(i) bromide Chemical compound [Tl]Br PGAPATLGJSQQBU-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
- H01J5/22—Vacuum-tight joints between parts of vessel
- H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
- H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Induction Heating (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Joining Of Glass To Other Materials (AREA)
Description
'•"""Patentanmeldung mit Hilfsgebrauchsmuster'• "" "Patent application with Auxiliary utility model
FOHSCHUNGSLaBORATORIUM PROF. DR.-IHG, W. HEIMAMV Wieabaden-Dotzheim, Am KohlheokRESEARCH LABORATORY PROF. DR.-IHG, W. HEIMAMV Wieabaden-Dotzheim, Am Kohlheok
Verfahren zum vakuumdicht en Verbinden von infrarotdurchlässigen !fenstern mit dem Gehäuse eines Infrarot-DetektorsMethod for vacuum-tight joining of infrared-permeable ! windows with the housing of an infrared detector
Die Stoffe, aus denen die Fenster zum vakuumdichten Abschlüssen von Infrarot-Detektoren hergestellt werden, besitzen im allgemeinen einen hohen thermischen Ausdehnungskoeffizienten, wie besonders KRS 5» Äusaerdea weisen sie oft nur eine geringe mechanische Festigkeit auf, wie s.B«, KBr, OaBr, CaJ uewo, dazu sind ei· häufig hygroskopisch. Zum Verbinden von Fenster und Gehaust let man deshalb auf organische Verbindungen, wi· Epoxydharz· usw· oder anorganisch· Stoff·, wi· AgOl angewiesen. Organische Verbindungen sind jedoch, wi· allgemein bekannt, vakuunteohnisoh sehr problematisch, weil kein· unbedingt· Lüftdichtigkeit und auch keine ausreichend· Mechanisch· Festigkeit erzielt werden kaiuu Bei den anorganischen Stoffen besteht dagegen die Gefahr, dass si· Mit dem Stoff, aus dem die Fenster hergestellt sind, reagieren.The materials from which the windows for the vacuum-tight closure of infrared detectors are made generally have a high coefficient of thermal expansion, especially KRS 5 » Äusaerdea they often show only a slight mechanical Firmness on, like s.B «, KBr, OaBr, CaJ uewo, in addition are often hygroscopic. To connect Windows and housings are therefore left to organic compounds, such as epoxy resin etc. or inorganic Substance ·, wi · AgOl instructed. However, as is generally known, organic compounds are vacuunteohnisoh very problematic because not · necessarily · airtightness and also no sufficient · mechanical · strength can be achieved kaiuu with the inorganic On the other hand, there is a risk that the fabric from which the windows are made react.
Aufgabe der Erfindung ist es, diese Kachteile su beseitigen. Dies wird im wesentlichen daduroh erzielt, dass auf dit su pchliesaende öffnung ein·· dünnen Metall«· ein Fenster au· geeignete» Material,The object of the invention is to eliminate these Kachteile su. This is essentially achieved by that on the su pchliesaende opening a ·· thin metal «· a window made of · suitable» material,
909S27/0624909S27 / 0624
-JV · MBMMl IWMMHM WMMMkI «««v-JV · MBMMl IWMMHM WMMMkI «« «v
BAD Oi-«ti.s«AUiBAD Oi- "ti.s" AUi
H96A99H96A99
wie KBr, CsBr, CsJ usw. gelegt wird, welches die öffnung allseitig etwas Überragt. Dann wird das Ganze auf eine möglichst enge Zone um die zu verschliessende Öffnung herum bis auf die Schmelztemperatur des Stoffes, aus dem das Fenster besteht, jE.Bo mittels Hochfrequenzinduktionsspulen, erhitzt. Durch sein Eigengewicht sinkt das Fenster in die Öffnungο Sobald es bis auf die gewünschte Tiefe eingedrungen ist, wird die Beheizung unterbrochen. Die Temperatur sinkt sehr sohneil unter den Schmelzpunkt, und das Fenster kann nicht mehr tiefer eindringen«how KBr, CsBr, CsJ etc. is laid, which protrudes slightly beyond the opening on all sides. Then that will All in as narrow a zone as possible around the one to be closed Opening around to the melting temperature of the substance of which the window is made, jE.Bo by means of high frequency induction coils, heated. Due to its own weight, the window sinks into the opening o As soon as it is down to the desired If the depth has penetrated, the heating is interrupted. The temperature drops very quickly the melting point, and the window can no longer penetrate any further «
Bei diesem Verfahren schmilzt das Fenstemiaterial nur in unmittelbarer Nähe des Metalles, in den sich die zu verschliessende öffnung befindete Sonst bleibt es völlig unbeschädigt. Der Schmelzfluss sohliesst nach der Abkühlung die Verbindung vakuumdicht ab. Da die Bleche sehr dünn sind, nimmt es die Spannungen, die aus der Längenänderung von Fenster und Metall beim Abkühlen entstehen; leicht auf. Wesentlich ist dabei, dass die noch verbleibenden Spannungen völlig radialsymmetrisch auf die Mitte des Fensters gerichtet sind. Sie werden ohne weiteres vom Fenster aufgenommen, da si· dieses ausschliesslich auf Druck beanspruchen.In this process, the window material melts only in the immediate vicinity of the metal in which the opening to be closed is otherwise it remains completely undamaged. After cooling, the melt flow bottom makes the connection vacuum-tight away. Since the sheets are very thin, it takes the stresses out of the change in length Windows and metal are created when it cools; easy on. It is essential that the remaining Stresses are directed completely radially symmetrically to the center of the window. she are easily taken up by the window, since they only use pressure on it.
Hit diesem Verfahren können sowohl öffnungen in ebenen Metallflächen, als auch die Enden von Rohren verschlossen werden.Hit this procedure can both openings in flat metal surfaces, as well as the ends of pipes are closed.
Um ein zu tiefes Sindringen von Metall in das Fenster bzw· umgekehrt zu vermeiden, wird aweokmfissig bei Öffnungen In ebenen Blechen unterhalb der öffnung, bei Hohren unterhalb des zu verschlieasenden Endes auaserhalb des Rohres, jeweils in einem der gewünschten Eindringtiefe ent-In order to prevent metal from penetrating too deeply into the window or vice versa, it is awkward in the case of openings in flat metal sheets below the opening, with Hohren below the one to be closed End outside the pipe, respectively at one of the desired penetration depth
-3- H 96499-3- H 96499
sprechenden Abstand vom Blech bzw« Rohrende eine Haltevorrichtung angeordnet, auf die das Fenster eich auflegt, sobald die gewünschte Bindringtiefe erreicht ist«.speaking distance from the sheet metal or pipe end Arranged holding device on which the window is placed as soon as the desired binding ring depth is reached is reached «.
Die Beheizung des Metalles kann in beliebiger Form erfolgen. Zweokmftssig ist eine Beheizung mittels Hochfrequenzinduktionsspulen.,The metal can be heated in any form. Heating is two-fold by means of high frequency induction coils.,
Die Metalle sind die für Vakuumverschmelzungen üblichen, insbesondere Silber. Ihre Stärke beträgt vorzugsweise 0,05 bis 0,1 mau Die Fenster stehen zweckmässig etwa 0,5 - 1 mm über*den Rand der zu verachiiea8enden öffnung über·The metals are those customary for vacuum fusing, especially silver. Your strength is preferably 0.05 to 0.1 mau The windows are open expediently about 0.5 - 1 mm over * the edge of the to verachiiea8enden opening over
In der Zeichnung ist das Verfahren nach der Erfindung schematisch dargestellt« Die Fig. \ und 2 zeigen zwei verschiedene Durchführunosmöglichkeiten.. In the drawing, the method according to the invention is shown schematically, "FIGS. \ And 2 show two different business opportunities Accomplishment o ..
Fig. 1 betrifft das Verschlieasen eines Rohrendes, Figo 2 das Verschliessen einer Öffnung in einem ebenen Blech.Fig. 1 relates to the closing of a pipe end, Figo 2 shows the closure of an opening in a flat sheet metal.
3 die Haltevorrichtung für das Kristallfenster und3 the holding device for the crystal window and
4 die Hochfrequenzinduktionsspule» Sobald das Metall ,5^auf die Schmelztemperatur des Fenstermaterials erhitzt ist, dringt es bei 5 in das Fenster 1 ein, bis dieses auf der Haltevorrichtung 3 aufliegt. Bann wird die Beheizung unterbrochen.4 the high frequency induction coil »once the metal , 5 ^ to the melting temperature of the window material is heated, it penetrates at 5 into the window 1 until it rests on the holding device 3. The heating is then interrupted.
Ud zu erreionen, dass bei der Ausführungsform gemöes Fig. 2 das Fenatermaterial die Blechkante unten wulstförmig umsohliesst, ist es zwecknäsaig, der Haltevorrichtung 3 etwa die Grosse des Fensters zu geben und ihren Rand etwa» hochzuwölben0 •»Ft- 1991 H νοβ 13. 5. 1963 bad Cf GTo achieve that, in the embodiment according to FIG. 2, the window material surrounds the sheet metal edge in a bead-like shape, it is expedient to give the holding device 3 approximately the size of the window and to bulge its edge up approximately 0 • »Ft- 1991 H νοβ 13. 5. 1963 Bad Cf G
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0039733 | 1963-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1496499A1 true DE1496499A1 (en) | 1969-07-03 |
Family
ID=7097915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19631496499 Pending DE1496499A1 (en) | 1963-05-14 | 1963-05-14 | Method for the vacuum-tight connection of infrared-permeable windows with the housing of an infrared detector |
Country Status (3)
Country | Link |
---|---|
US (1) | US3458379A (en) |
DE (1) | DE1496499A1 (en) |
GB (1) | GB1033750A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5067492A (en) * | 1990-08-07 | 1991-11-26 | Critikon, Inc. | Disposable airway adapter |
US10847853B1 (en) | 2016-11-22 | 2020-11-24 | Wavefront Research, Inc. | Broadband windows |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419049A (en) * | 1943-03-29 | 1947-04-15 | Westinghouse Electric Corp | Metal supported glass window |
US2542702A (en) * | 1947-05-29 | 1951-02-20 | Rca Corp | Dielectric heat sealer |
US2744592A (en) * | 1948-10-29 | 1956-05-08 | Sylvania Electric Prod | Wave-guide window |
US2649392A (en) * | 1950-03-30 | 1953-08-18 | Kraft Foods Co | Method of forming seal in synthetic plastic packages |
GB968277A (en) * | 1960-05-02 | 1964-09-02 | English Electric Co Ltd | Improvements in or relating to bonding agents and processes and bonded assemblies produced therewith |
-
1963
- 1963-05-14 DE DE19631496499 patent/DE1496499A1/en active Pending
-
1964
- 1964-05-11 GB GB19572/64A patent/GB1033750A/en not_active Expired
- 1964-05-11 US US366257A patent/US3458379A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB1033750A (en) | 1966-06-22 |
US3458379A (en) | 1969-07-29 |
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