CN206804968U - For at low temperature to the device of Infrared Lens group centering - Google Patents
For at low temperature to the device of Infrared Lens group centering Download PDFInfo
- Publication number
- CN206804968U CN206804968U CN201720603856.7U CN201720603856U CN206804968U CN 206804968 U CN206804968 U CN 206804968U CN 201720603856 U CN201720603856 U CN 201720603856U CN 206804968 U CN206804968 U CN 206804968U
- Authority
- CN
- China
- Prior art keywords
- hole
- thousand points
- frame
- heat insulation
- lens group
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
It is used for this patent discloses a kind of at low temperature to the device of Infrared Lens group centering, device includes outer casing base, passes cold copper chamber, liquid storage inner bag, strain adjusted frame, mounting cap, thousand points of nuts, magnet, lens group base, transition mounting blocks, suction interface, pin interfaces, optical transmission window.By the cavity being made up of outer casing base, the cold copper chamber of biography, liquid storage inner bag and mounting cap low-temperature vacuum environment is provided to lens group is conditioned.Magnet is placed on strain adjusted frame and hull outside, thousand outside adjusting means point nut, lens centering fine setting is driven using repulsive force caused by the change of magnet spacing.Spot welding is carried out with laser-beam welding machine to lens fixed edge and lens assembly housing to fix, complete the centering operation under lens group low temperature after centering.It solves the centering regulation problem at low temperature to Infrared Lens group, improves centering dress school precision.
Description
Technical field
This patent is related to infrared detector module encapsulation technology and Infrared Lens group cryogenic opticses centering technology, specifically liquid
The Infrared Lens group centering dress calibration device and dress calibration method of nitrogen warm area work, it is applied to infrared detector module Infrared Lens
The centering regulation operation of group at low temperature.
Background technology
Infrared detector module technology of preparing is in space flight, aviation infrared regime important in inhibiting.As wavelength is to long wave
Extension and the raising of detectivity, infrared detector must could work under profound hypothermia, so also cause infrared detector
Using when mostly encapsulate to form infrared detector dewar assembly using Dewar.In infrared detector module encapsulation technology developing direction
In, one of trend be towards low temperature after light path integrated form encapsulation development.Light path integrated form encapsulates after developing low temperature, is first
Because it be must operate at for optical lens after some long wave interference formula survey meter requirements under profound hypothermia environment, in addition when lens position
Optical system size can be reduced when resting against nearly detector, especially for the smaller optical systems of F#, and meanwhile it is this by optical lens
The way of low-temperature end is packaged in, pair is favourable with the spuious Xanthophyll cycle of whole optical system.But due to needing lens group collection
Into with component internal, and require that it possesses ten microns even several microns of accuracy of alignment, while also to meet at low temperature
Accuracy of alignment demand, this results in high-precision centering problem when being assembled between each lens of Infrared Lens group of low-temperature working.For
The lens group of low-temperature working, traditional method is that centering operates between carrying out lens at normal temperatures, then is applied at low temperature.Due to existing
The influence of expanding with heat and contract with cold of erection stress and lens arrangement, accuracy of alignment under normal temperature at low temperature by can not be unavoidably appearance centering
Precision misalignment and deviation immeasurability problem.In the preparation of traditional infrared lens group, a kind of method is by controlling parts public
Difference coordinates and repeatedly alignment measurement is realized to heart precision controlling, is not only due to that each parts machining required precision is high, and it adds
Work preparation cost, subsequent survey and assembling prepare with high costs；In addition in patent《A kind of Method of Adjustment of infrared lens》It is (open
Number：CN102998767A the method that Infrared Lens centering dress school is carried out using double-optical path instrument is described in).But two methods
Due to that can not realize the centering operation of lens group at low temperature, it can not solve the accuracy of alignment misalignment of lens group during low temperature use
And deviation can not survey problem.For low temperature dress between the lens of above-mentioned Infrared Lens group compared with centering problem, it is necessary to explore a kind of efficient
Feasible solution method.
The content of the invention
The purpose of this patent is to provide a kind of infrared detector module Infrared Lens group cryogenic opticses centering dress calibration device,
It is applied to low-temperature infrared detector component and fills school with the centering of Infrared Lens group at low temperature.It solves Infrared Lens
The dress school problem of group at low temperature, improve centering dress school precision.
What the purpose of this patent was realized in：Described is a kind of at low temperature to the device of Infrared Lens group centering
As shown in Figure 1, mainly include outer casing base 1, activated charcoal 2, pass cold copper chamber 3, liquid storage inner bag 4, heat insulation flange 5, should modify tone
Save frame 6,7, thousand points of nut framves 8 of mounting cap, magnet 9, upside optical transmission window 10, device for fixing screen on headrest 11, coarse adjustment screw 12, transition peace
Fill block 14, suction interface 15, pin interfaces 16, activated carbon 17, downside optical transmission window 19.
Described outer casing base 1 is barrel-shaped structure, and material is stainless steel, and bucket wall thickness is 1.5mm-3mm, is highly
60mm-70mm, bottom outside are fixing hole 102, and base seal groove 103 and base installing hole 104, bucket wall side cloth are arranged at top
Suction interface mounting hole 105 and pin interfaces mounting hole 106 are equipped with, is lower side window mounting hole 107 among bottom, such as Fig. 2 institutes
Show.
Described activated charcoal 2 is circular ring structure, and material is aluminium alloy, wall thickness 1mm-2mm, is highly 15mm-20mm,
Air-vent 201 is distributed evenly at the bottom of, centre is the fixation internal thread 202 for installing activated charcoal 2, as shown in Figure 3.
The cold copper chamber 3 of described biography is circular ring structure, and material is oxygen-free copper, is highly 40mm-60mm, and centre is printing opacity chamber
301, there is transition block fixing threaded hole 302 upper end, as shown in Figure 4.
Described liquid storage inner bag 4 is thin-wall circular barrel structure, and material is stainless steel, and wall thickness 0.2mm-0.3mm, thin-walled is highly
For 40mm-50mm, its lower end is the fixation external screw thread 401 for installing activated charcoal 2, and top is welding chimb 402, and centre is
Copper chamber pilot hole 403, as shown in Figure 5.
Described heat insulation flange 5 is disk-shaped part, and material is stainless steel, and strain frame is respectively arranged with its flange face
Installation screw 501, outer casing base installation screw 502, mounting cap installation screw 503 and heat-insulated air slot 504, it is circumferentially convex at middle part
Rising and weld chimb 505 for inner bag, central aperture is copper chamber via 506, and the side of heat insulation flange 5 is provided with liquid nitrogen hand-hole 507,
The wall thickness of thin-walled heat insulation loop 508 is 0.15mm-0.2mm, and wall thickness is highly 15mm-20mm, as shown in Figure 6 and Figure 7.
Described strain adjusted frame 6 is upper and lower two layers of circular ring structure, material selection stainless steel, it is a diameter of to strain connecting rod 602
0.5mm-2mm, length 25mm-30mm, the lower surface of strain adjusted frame 6 have height to install heat-insulated boss 601 for 3mm-5mm, should
Become the upper surface of adjusting bracket 6 and be disposed with auxiliary frame fixing threaded hole 603, as shown in Figure 8.
Described mounting cap 7 is inverted drum structure, and material is stainless steel, wall thickness 2mm-3mm, is highly 40mm-
60mm.Mounting cap seal groove 702 and mounting cap mounting hole 703 are arranged at bottom, and top surrounding is provided with thousand points of nut frame installation spiral shells
Hole 704, top centre is upper side window mounting hole 705, as shown in Figure 9.
Thousand points of described nut framves 8 are thickness 5mm-10mm disc structure, and material is aluminium alloy, in thousand points of nut framves 8
Surrounding is thousand points of nuts 801, and top is nut frame fixing hole 802, and thousand points of inside of nut fixing hole 803 are thousand points of nut fixed columns
804, as shown in Figure 9.
Described device for fixing screen on headrest 11 is that disk band grabs structure, and material is stainless steel, and thickness 1mm-2mm, top has auxiliary
Frame mounting hole 1101 is helped, bottom is the structure of auxiliary frame top pin 1102, as shown in Figure 8.
Described transition mounting blocks 14 are wafer architecture, and material is oxygen-free copper, thickness 2mm-5mm, transition mounting blocks 14
Base fixing hole 1401 is arranged at bottom, and centre is light hole 1402, and outside is transition block fixing hole 1403, and top circumferential projection side is
Base is oriented to step 1404, as shown in figure 11.
Described upside optical transmission window 10 is printing opacity wafer architecture with downside optical transmission window 19, and a diameter of 20mm-40mm is thick
It is K7 glass to spend for 1mm-3mm, material.
Suction interface 15 and pin interfaces 16 are welded on the side of outer casing base 1, and downside optical transmission window 19 is glued shell bottom
The lower surface of seat 1.Liquid storage inner bag 4 welds together with heat insulation flange 5, passes cold copper chamber 3 and is arranged on through heat insulation flange 5 in liquid storage
On courage 4, heat insulation flange 5 welds together with passing cold copper chamber 3, welds together on liquid storage inner bag 4 with passing cold copper chamber 3.Activated carbon
17 are put into activated charcoal 2, then activated charcoal 2 and liquid storage inner bag 4 are spirally connected fixation.The upper end of outer casing base 1 and heat insulation flange 5
Sealing is fixed together.Transition mounting blocks 14 are installed into fixation with passing cold copper chamber 3 by screw, thermometric RTD 18 was glued to
Cross the lateral location of mounting blocks 14.The S poles of four magnet 9, which are glued, is fixed on the top surrounding of strain adjusted frame 6, and device for fixing screen on headrest 11 is pacified
It is placed on strain adjusted frame 6.Upside optical transmission window 10 is airtight to be glued to the upper end of mounting cap 7, and four thousand points of nuts 24 are arranged on
On thousand points of nut framves 8, then the S poles of four magnet 9 are glued on four thousand points of nuts 24, thousand points of nut framves 8 with mounting cap 7
Thousand points of nut framves fixed by screw.Strain adjusted frame 6 equipped with device for fixing screen on headrest 11 is placed on heat insulation flange 5, auxiliary
Fixed mount 11 is pressed in the upper end of strain adjusted frame.Four coarse adjustment screws 12 are respectively against device for fixing screen on headrest 11.Thousand points of nut framves 8
Magnet 9 respectively at corresponding with the magnet 9 on strain adjusted frame 6, with heat insulation flange 5 by screw fixed by mounting cap 7.Above
Complete a kind of be used at low temperature to the device of Infrared Lens group centering, as shown in Figure 1.
When carrying out centering regulation to lens group, the lens group base 13 equipped with secondary mirror 23 and secondary mirror retainer ring 21 is fixed on
On transition mounting blocks 14, this device is vacuumized by suction interface 15, vacuum is higher than 1.0 × 10-3Pa.Injected to liquid nitrogen
Appropriate liquid nitrogen is constantly injected in hole 507, carries out resistance measurement to the stitch interconnected on pin interfaces 16 with thermometric RTD 18, waits survey
After resistance value stabilization shown in warm RTD 18, suction interface 15 is blocked to the low temperature suction dimension of airtight activated carbon 17 in device
Hold vacuum.The center of lens group base 13 is consistent with the center adjustment of double light path equipment, then thousand points of nuts of 4 are adjusted respectively
24, by homopolar-repulsion power between magnet, drive device for fixing screen on headrest 11 secondary mirror retainer ring 21 is produced corresponding displacement, complete secondary mirror 23
Centering with lens group base 13 operates.The present apparatus is removed from double light path equipment, secondary mirror is fixed through upside light inlet window 10
The laser welding that ring 21 carries out circumferential multiple spot is fixed.Mounting cap 7 and device for fixing screen on headrest 11 are removed, the primary mirror with primary mirror 22 is consolidated
Determine ring 20 and be placed in the top of lens group base 13, after screwing four coarse adjustment screws 12, then mounting cap 7 is sealed and is fixed on heat-insulated method
On orchid 5.It is consistent with the center of secondary mirror 23 to adjust the center of double light path equipment centering regulation platform, then respectively 4 corresponding to regulation
Thousand points of nuts 24, the centering for completing primary mirror 22 and secondary mirror 23 operate.The present apparatus is removed from double light path equipment, through upside printing opacity
Window 10 carries out the laser welding of circumferential multiple spot to primary mirror retainer ring 20, as shown in figure 13.So it is achieved that at low temperature to red
The centering for microscope group of passing through inside.
The implementation method of this patent is as follows：
1. suction interface 15 is by laser welding on the suction interface hole 105 of outer casing base 1, pin interfaces 16 are by swashing
On the pin interfaces hole 106 of outer casing base 1, downside optical transmission window 18 is glued to outer casing base using epoxy glue is airtight for photocoagulation
On 1 lower side window mounting hole 107.
2. chimb 402 will be welded on liquid storage inner bag 4 and the upper inner-liner of heat insulation flange 5 welding chimb 505 is airtight by Laser Welding
Welding, then cold copper chamber 3 will be passed and pass through copper chamber via 506 on heat insulation flange 5 to be attached to the copper chamber pilot hole 403 on liquid storage inner bag 4
On, the copper chamber pilot hole 403 of the copper chamber via 506 of heat insulation flange 5 and liquid storage inner bag 4 is airtight by soldering with passing cold copper chamber 3
Welding.
3. activated carbon 17 is put into activated charcoal 2, then by the fixation internal thread 202 of activated charcoal 2 and liquid storage inner bag 4
The fixed rotation of external screw thread 401 installation is fixed.O-ring seal is put at the base seal groove 103 of shell base 1, then will be every
Hot flange 5 is placed to the upper surface of outer casing base 1, by screw by the installation screw 502 of heat insulation flange 5 and outer casing base 1
Base installing hole 104 is fixed.
4. step 1404 will be oriented to equipped with the base that is placed in nested with the lens group base 13 of secondary mirror retainer ring 21 of secondary mirror 23
It is interior, then the base fixing hole 1401 of transition mounting blocks 14 and lens group base 13 are installed by screw and fixed, finally by transition
The transition block fixing hole 1403 of mounting blocks 14 installs fixation with passing transition block fixing threaded hole 302 on cold copper chamber 3 by screw.
5. the side of transition mounting blocks 14 will be glued to using epoxy glue with the thermometric RTD 19 of the UNICOM of pin interfaces 16.Will
Secondary mirror 23 is fixed in secondary mirror retainer ring 21 using epoxy glue, then the secondary mirror retainer ring 21 for being fixed with secondary mirror 23 is placed in into lens
The secondary mirror retainer ring mounting surface 1302 of group base 13 bottom, primary mirror 22 is fixed on stand-by in primary mirror retainer ring 20 using epoxy glue.
6. the S poles of four magnet 9 are fixed on the top surrounding of strain adjusted frame 6 using epoxy glue, by device for fixing screen on headrest 11
The auxiliary frame fixing threaded hole 603 of auxiliary frame mounting hole 1101 and strain adjusted frame 6 be fixedly mounted by screw.By upside printing opacity
Window 10 is glued on the upper side window mounting hole 705 of mounting cap 7 using epoxy glue is airtight.
7. four thousand points of nut fixing holes 803 of four thousand points of nuts 24 and thousand points of nut framves 8 are fixed using epoxy glue,
The S poles of four magnet 9 are glued on four thousand points of nuts 24 using epoxy glue again, the nut frame of thousand points of nut framves 8 is fixed
Hole 802 and thousand points of nut frame installation screws 704 of mounting cap 7 are fixed by screw, each thousand points of nuts 24 of regulation to maximum scale.
8. the fixing hole 102 and the centering regulation platform of double light path equipment on present apparatus outer casing base 1 are fixed by screw,
The centering of double light path equipment is adjusted into the center of platform to adjust unanimously with the center of lens group base 13.
9. it will be answered on the heat-insulated boss 601 of the installation being provided with the strain adjusted frame 6 of device for fixing screen on headrest 11 and heat insulation flange 5
Become frame installation screw 501 and fixation is installed by screw, screwing four coarse adjustment screws 12 makes auxiliary frame top pin 1102 fix secondary mirror
The banding of ring 21.
10. an O-ring seal 25 is put into mounting cap seal groove 702, thousand points of nut framves 8 are placed in the upper of mounting cap 7
End, is fixed by screw.By the magnet 9 on thousand points of nut framves 8 and the 9 corresponding installation of magnet on strain adjusted frame 6, finally will
The mounting cap mounting hole 703 of mounting cap 7 is fixed with the mounting cap screw 503 of heat insulation flange 5 by screw.
11. vacuumized by the suction interface 15 of vavuum pump pairing device, it is desirable to which vacuum is higher than 1.0 × 10-3Pa。
Using liquid nitrogen funnel, appropriate liquid nitrogen is injected to the liquid nitrogen hand-hole 507 of heat insulation flange 5, using universal meter on pin interfaces 16
Resistance measurement is carried out with the stitch that thermometric RTD 18 interconnects, and supplements liquid nitrogen in good time, avoids liquid nitrogen from being exhausted, waits thermometric platinum
After resistance value stabilization shown in resistance 18, suction interface 15 is blocked airtight, dimension is acted on the low temperature suction of activated carbon in device 17
Hold device vacuum.
12. adjusting double light path equipment, according to the secondary mirror 23 that equipment is shown and equipment center offset relation, regulation is corresponding respectively
Thousand points of nuts 24, distance is close between making the magnet 9 on the magnet 9 and strain adjusted frame 6 on thousand points of nuts 24, by between magnet
Homopolar-repulsion power, make the stress deformation of strain connecting rod 602 of strain adjusted frame, drive device for fixing screen on headrest 11 to produce secondary mirror retainer ring 21
Raw corresponding displacement, the centering for completing secondary mirror 23 and lens group base 13 operate.
13. removing the present apparatus from double light path equipment, and avoid touching each thousand points of nuts 24, using laser-beam welding machine, thoroughly
Cross the laser welding that upside light inlet window 10 carries out circumferential multiple spot to secondary mirror gap adjustment seam 2101 to fix, empty in liquid storage inner bag 4
Residual liquid nitrogen waiting device is risen again.
14. removing mounting cap 7 and device for fixing screen on headrest 11, the primary mirror retainer ring 20 with primary mirror 22 is placed in lens group pipe
On the primary mirror retainer ring mounting surface 1303 at the top of seat 13, four coarse adjustment screws 12 are screwed by the banding of primary mirror retainer ring 20.
15. repeat the above steps (10)-(12), using the lower light path of double light path equipment through the printing opacity chamber for passing cold copper chamber 3
The center of 301 capture secondary mirrors 23, and the centering regulation platform for adjusting double light path equipment makes secondary mirror 23 complete centering with equipment.
16. adjusting the upper light path of double light path equipment and capturing the vertex position of primary mirror 22, the primary mirror 22 shown according to equipment pushes up
Point position and equipment center offset relation, respectively thousand points of nuts 801 corresponding to regulation, the centering for completing primary mirror 22 and secondary mirror 23 are grasped
Make.
17. removing the present apparatus from double light path equipment, and avoid touching each thousand points of nuts 801, using laser-beam welding machine, thoroughly
Cross the laser welding that upside light inlet window 10 carries out circumferential multiple spot to primary mirror gap adjustment seam 2001 to fix, empty in liquid storage inner bag 4
The liquid nitrogen waiting device of residual is risen again.
The centering dress school at low temperature to Infrared Lens group is achieved that above.
The advantages of this patent is：
1 realizes the centering regulatory function of lens group at low temperature；
Micropositioning stage can be changed according to different lens groups and used in 2 devices, adapt to the operational requirements of all kinds lens group；
3 at low temperature, and the deviation between lens can pass through double light path device measuring.
Brief description of the drawings
Fig. 1 is lens low temperature centralising device structure chart；
In figure：1-outer casing base；2-activated charcoal；3-pass cold copper chamber；4-liquid storage inner bag；5-heat insulation flange；6—
Strain adjusted frame；7-mounting cap；701-mounting cap sealing ring；8-thousand points of nut framves；9-magnet；10-upside light inlet window
Mouthful；11-device for fixing screen on headrest；12-coarse adjustment screw；13-lens group base；14-transition mounting blocks；15-suction interface；
16-pin interfaces；17-activated carbon；18-thermometric RTD；19-downside optical transmission window；24-thousand points of nuts；25-O-shaped
Sealing ring；
Fig. 2 is outer casing base schematic diagram；
In figure：102-fixing hole；103-base seal groove；104-base installing hole；105-suction interface is installed
Hole；106-pin interfaces mounting hole；107-lower side window mounting hole；
Fig. 3 is activated charcoal schematic diagram；
In figure：201-air-vent；202-fix internal thread；
Fig. 4 is the cold copper chamber schematic diagram of biography；
In figure：301-printing opacity chamber；302-transition block fixing threaded hole；
Fig. 5 is liquid storage inner bag schematic diagram；
In figure：401-fix external screw thread；402-welding chimb；403-copper chamber pilot hole；
Fig. 6 is heat insulation flange top view；
In figure：501-strain frame installation screw；502-outer casing base installation screw；503-mounting cap installation screw；
504-heat-insulated air slot；
Fig. 7 is heat insulation flange sectional view；
In figure：505-inner bag welds chimb；506-copper chamber via；507-liquid nitrogen hand-hole；508-thin-walled heat insulation loop；
Fig. 8 is adjusting bracket structural representation；
In figure：The heat-insulated boss of 601-installation；602-strain connecting rod；603-auxiliary frame fixing threaded hole；1101-auxiliary frame
Mounting hole；1102-auxiliary frame top pin；
Fig. 9 is mounting cap schematic diagram；
In figure：702-mounting cap seal groove；703-mounting cap mounting hole；704-thousand points of nut frame installation screws；
705-go up side window mounting hole；801-thousand points of nuts；802-nut frame fixing hole；803-thousand points of nut fixing holes；804—
Thousand points of nut fixed columns；
Figure 10 is lens group base schematic diagram；
In figure：1301-installation screw；1302-secondary mirror retainer ring mounting surface；1303-primary mirror retainer ring mounting surface；
Figure 11 is transition mounting blocks schematic diagram；
In figure：1401-base fixing hole；1402-light hole；1403-transition block fixing hole；1404-base is oriented to
Step；
Figure 12 lens group header assemblies schematic diagrames；
In figure：21-secondary mirror retainer ring；2101-secondary mirror gap adjustment is stitched；20-primary mirror retainer ring；Between 2001-primary mirror
Gap regulation seam；22-primary mirror；23-secondary mirror；
Figure 13 is that primary mirror fills school schematic diagram.
Embodiment
Specific implementation of the patent mode is described in further detail below in conjunction with the accompanying drawings：
Example is that the centering dress school of lens group in certain Long Wave Infrared Probe component project uses.The lens group is integrated in spy
Survey inside device assembly Dewar, operating temperature 80K.
1. the method for the preparation of each parts in this patent：
The material of described outer casing base 1 is stainless steel, and bucket wall thickness is 2mm, is highly 65mm, bottom outside uniform 8
Base seal groove 103, groove width 2mm, groove depth 1mm, base installing hole are arranged at individual a diameter of 4.5mm fixing hole 102, top
104 circumferential uniform 8 diameters 4.5mm unthreaded holes, there are suction interface mounting hole 105 and pin interfaces mounting hole 106, bottom in bucket wall side
It is lower side window mounting hole 107 among portion, a diameter of 30mm, as shown in Figure 2.
The material of described activated charcoal 2 is aluminium alloy, wall thickness 1mm, is highly 17mm, is distributed evenly at the bottom of 12
Individual a diameter of 2mm air-vent 201, fixed internal thread 202 are M20, length 9mm, as shown in Figure 3.
The material of the described cold copper chamber 3 of biography is oxygen-free copper, a diameter of 20mm, is highly 50mm, centre of tree open chamber 301 it is straight
Footpath is 14mm, and transition block fixing threaded hole 302 is circumferential 4 M2 screws, as shown in Figure 4.
The material of described liquid storage inner bag 4 is stainless steel, is highly 42mm, wall thickness 0.2mm, and its lower end is used to install work
Property charcoal box 2 fixation external screw thread 401 be M20, length 9mm, top welding chimb 402 protrudes thin-wall outer 0.5mm, middle
The internal diameter of copper chamber pilot hole 403 is 20mm, is highly 1.5mm, as shown in Figure 5.
The material of described heat insulation flange 5 is stainless steel, a diameter of 102mm, height 21mm, strains frame installation screw 501
For 4 M2 screw, 8 M4 spiral shells of outer casing base installation screw 502 and the respectively circumference of mounting cap installation screw 503
Hole, and the anglec of rotation is 8 °, a diameter of 20mm of copper chamber via 506 between holes, the liquid nitrogen hand-hole 507 of the side of heat insulation flange 5
A diameter of 6mm, the wall thickness of thin-walled heat insulation loop 508 are 0.15mm, are highly 18mm, as shown in Figure 6 and Figure 7.
The material of described strain adjusted frame 6 is stainless steel, strains a diameter of 1mm, the length 30mm of connecting rod 602, should
Become the height of the heat-insulated boss 601 of installation of the lower surface of adjusting bracket 6 as 3mm, the upper surface auxiliary frame fixing threaded hole of strain adjusted frame 6
603 be 4 M2 screws, as shown in Figure 8.
The material of described mounting cap 7 is stainless steel, wall thickness 2mm, is highly 50mm, and bottom uniform 8 is a diameter of
4.2mm mounting cap mounting hole 703, bottom outside have diameter 2mm mounting cap seal groove 702, and top is that 4 M2 thousand divide spiral shell
The blind hole of female frame installation screw 704,705 a diameter of 30mm of window mounting hole, as shown in Figure 9.
The material of thousand points of described nut framves 8 is aluminium alloy, and thickness 6mm, being circumferentially evenly distributed with 4 regulation strokes is
0-20mm thousand points of nuts 24, the nut frame fixing hole 802 at top are 4 diameter 2.2mm through hole, as shown in Figure 9.
The material of described device for fixing screen on headrest 11 is stainless steel, and thickness 1.5mm, length 38mm, 4 diameters are arranged at top
For 2.2mm auxiliary frame mounting hole 1101, bottom is the structure of auxiliary frame drift angle 1102, as shown in Figure 8.
The material of described transition mounting blocks 14 is oxygen-free copper, and thickness 4mm, 4 diameters are arranged at the bottom of transition mounting blocks 14
For 2.2mm base fixing hole 1401, a diameter of 15mm of middle light hole 1402, outside transition block fixing hole 1403 is 4
A diameter of 2.2mm through hole, it is 2mm that base, which is oriented to the height of projection of step 1404, as shown in figure 11.
Described upside optical transmission window 10 and downside optical transmission window 18 are printing opacity wafer architecture, a diameter of 30mm, and thickness is
2mm, material are K5 glass.
2. assemble and use step：
(1) by laser welding on the suction interface hole 105 of outer casing base 1, pin interfaces 16 pass through suction interface 15
Laser welding is on the pin interfaces hole 106 of outer casing base 1, bonding power 0.66kw, pulsewidth 7ms.Downside optical transmission window
18 are glued on the lower side window mounting hole 107 of outer casing base 1 using epoxy glue is airtight.
(2) chimb 402 will be welded on liquid storage inner bag 4 and the upper inner-liner of heat insulation flange 5 welding chimb 505 is airtight by Laser Welding
Welding, then cold copper chamber 3 will be passed and pass through copper chamber via 506 on heat insulation flange 5 to be attached to the copper chamber pilot hole 403 on liquid storage inner bag 4
On, the copper chamber pilot hole 403 of the copper chamber via 506 of heat insulation flange 5 and liquid storage inner bag 4 is airtight by soldering with passing cold copper chamber 3
Welding, brazing temperature are 1050 DEG C.
(3) be that 14 grams of activated carbon 17 is put into activated charcoal 2 and tiled by weight, then by activated charcoal 2 fix in spiral shell
Line 202 is installed with fixing the rotation of external screw thread 401 on liquid storage inner bag 4, is fixed after extruding activated carbon 17.O-ring seal 25 is smeared
It is put into after vacuum grease in the base seal groove 103 of shell base 7, then heat insulation flange 5 is placed to base sealing ring 101
On, the installation screw 502 of heat insulation flange 5 and the upper bed-plate mounting hole 104 of outer casing base 1 are fixed by 8 M4 screws.
(4) step 1404 will be oriented to equipped with the base that is placed in nested with the lens group base 13 of secondary mirror retainer ring 21 of secondary mirror 23
It is interior, then the base fixing hole 1401 of transition mounting blocks 14 and lens group base 13 are fixed by 4 M2 screws installations, finally will
The transition block fixing hole 1403 of transition mounting blocks 14 is installed with passing transition block fixing threaded hole 302 on cold copper chamber 3 by 4 M2 screws
It is fixed.
(5) transition mounting blocks 14 will be glued to using DW3 type epoxy glues with the thermometric RTD 19 of the UNICOM of pin interfaces 16
Lateral location.Secondary mirror 23 is fixed in secondary mirror retainer ring 21 using DW3 type epoxy glues, then the secondary mirror for being fixed with secondary mirror 23 is consolidated
Determine the secondary mirror retainer ring mounting surface 1302 that ring 21 is placed in the bottom of lens group base 13, primary mirror 22 is fixed using DW3 type epoxy glues
In stand-by in primary mirror retainer ring 20.
(6) the S poles of 4 a diameter of 5mm × 3mm magnet 9 are fixed on the top four of strain adjusted frame 6 using epoxy glue
In week, the auxiliary frame mounting hole 1101 of device for fixing screen on headrest 11 and auxiliary frame fixing threaded hole 603 are fixedly mounted by 4 M2 screws.
Upside optical transmission window 10 is glued on the upper side window mounting hole 705 of mounting cap 7 using DW3 type epoxy glues are airtight.
(7) 4 thousand points of nuts circumferentially of four stroke 0-20mm thousand points of nuts 24 and thousand points of nut framves 8 are consolidated
Determine hole 803 to fix using DW3 type epoxy glues, then the S poles of 4 a diameter of 5mm × 3mm magnet 9 are glued to four using epoxy glue
Individual thousand points of tops of nut 24, by the nut frame fixing hole 802 of thousand points of nut framves 8 and thousand points of nut frame installation screws of mounting cap 7
704 are fixed by 4 M2 screw, each thousand points of nuts 24 of regulation to range 20mm positions.
(8) the centering regulation platform of the fixing hole 102 on present apparatus outer casing base 1 and double light path equipment is passed through into 8 M4
Screw is fixed, and the amesdial that double light path equipment is carried is directed at the outer wall of lens group base 13, is made by adjusting centering regulation platform
The change of the amesdial number of degrees is less than 5um, and present apparatus lens group base 13 completes centering with equipment.
(9) the heat-insulated boss 601 of installation of the strain adjusted frame 6 of device for fixing screen on headrest 11 will be installed with being answered on heat insulation flange 5
Become frame installation screw 501 to fix by 4 M2 screws installations, screwing four coarse adjustment screws 12 makes auxiliary frame top pin 1102 by secondary mirror
The banding of retainer ring 21.
(10) it is 87mm by internal diameter, a diameter of 2mm O-ring seal 25 is put into mounting cap seal groove 702, thousand points of spiral shells
Female frame 8 is placed in the upper end of mounting cap 7, is fixed by screw.Magnet 9 on thousand points of nut framves 8 and the magnetic on strain adjusted frame 6
9 corresponding installation of iron, the magnet 9 of 4 thousand points of nut framves 8 is directed at installation with 4 magnet 9 on strain adjusted frame 6 on mounting cap 7,
Finally mounting cap mounting hole 703 is fixed with mounting cap installation screw 503 on heat insulation flange 5 by 8 M4 screws.
(11) vacuumized by the suction interface 15 of Agilent vacuum exhauster pairing device, vacuum higher than 5.0 ×
10-4During Pa, using liquid nitrogen funnel, appropriate liquid nitrogen is constantly injected to the liquid nitrogen hand-hole 507 of heat insulation flange 5, at liquid nitrogen hand-hole
Frosting is also easy to produce, frosting need to be avoided using nitrogen injection, when resistance value shown in thermometric RTD 18 is 23.6 Ω, temperature 85K
When, maintain device vacuum by the low temperature suction effect of activated carbon in device 17.
(12) adjust double light path equipment and capture the vertex position of secondary mirror 23, deviation between secondary mirror 23 and equipment center before not adjusting
For 65 μm, thousand points of nuts 24 corresponding to regulation respectively, it is 1 μm finally to make between secondary mirror 23 and equipment center deviation, completes secondary mirror 23
Centering with lens group base 13 operates.
(13) present apparatus is removed from double light path equipment, and avoids touching each thousand points of nuts 24, using laser-beam welding machine, thoroughly
Cross the laser welding that upside light inlet window 10 is often located at 4 points to secondary mirror gap adjustment seam 2101 to fix, then empty in liquid storage inner bag 4
The liquid nitrogen of residual, risen again using nitrogen by liquid nitrogen hand-hole 507 to the air blowing accelerator of liquid storage inner bag 4, as shown in figure 12.
(14) mounting cap 7 and device for fixing screen on headrest 11 are removed, the primary mirror retainer ring 20 with primary mirror 22 is placed in lens group
On the primary mirror retainer ring mounting surface 1303 at the top of base 13, screwing four coarse adjustment screws 12 makes four coarse adjustment screws 12 consolidate primary mirror
Determine the banding of ring 20.
(15) repeat the above steps (10)-(12), using the lower light path of double light path equipment through the printing opacity chamber for passing cold copper chamber 3
The summit of 301 capture secondary mirrors 23, deviation is 40 μm between secondary mirror 23 and equipment center before not adjusting, respectively thousand points of spiral shells corresponding to regulation
Mother 801, it is 1 μm finally to make deviation between secondary mirror 23 and equipment center.
(16) the upper light path capture vertex position of primary mirror 22 of double light path equipment, primary mirror 22 and equipment center before not adjusting are adjusted
Between deviation be 72 μm, thousand points of nuts 801 corresponding to regulation respectively, it is 1 μm finally to make between primary mirror 22 and equipment center deviation, is completed
The centering of primary mirror 22 and secondary mirror 23 operates, as shown in figure 13.
(17) present apparatus is removed from double light path equipment, and avoids touching each thousand points of nuts 24, uses German ROFIN laser
Bonding machine, the circumferential laser welding for often locating at 4 points is carried out to primary mirror gap adjustment seam 2001 through upside light inlet window 10 and fixed, is emptied
The liquid nitrogen of residual, is risen again using nitrogen by liquid nitrogen hand-hole 507 to the air blowing accelerator of liquid storage inner bag 4 in liquid storage inner bag 4.
It is achieved that the centering dress school of lens group in certain Long Wave Infrared Probe component project uses above.
Claims (1)
1. a kind of infrared detector module lens group low temperature centering device, including outer casing base (1), activated charcoal (2), biography are cold
Copper chamber (3), liquid storage inner bag (4), heat insulation flange (5), strain adjusted frame (6), mounting cap (7), thousand points of nut framves (8), magnet
(9), upside optical transmission window (10), device for fixing screen on headrest (11), coarse adjustment screw (12), lens group base (13), transition mounting blocks
(14), suction interface (15), pin interfaces (16), activated carbon (17), downside optical transmission window (19)；It is characterized in that：
Described outer casing base (1) is barrel-shaped structure, and material is stainless steel, and bucket wall thickness is 1.5mm-3mm, is highly
60mm-70mm, bottom outside are fixing hole (102), and base seal groove (103) and base installing hole (104), bucket wall are arranged at top
There are suction interface mounting hole (105) and pin interfaces mounting hole (106) in side, is lower side window mounting hole (107) among bottom；
Described activated charcoal (2) is circular ring structure, and material is aluminium alloy, wall thickness 1mm-2mm, is highly 15mm-20mm bottoms
There is equally distributed air-vent (201) in portion, and centre is the fixation internal thread (202) for installing activated charcoal (2)；
The cold copper chamber (3) of described biography is circular ring structure, and material is oxygen-free copper, highly to be printing opacity chamber among 40mm-60mm
(301), there is transition block fixing threaded hole (302) upper end；
Described liquid storage inner bag (4) is thin-wall circular barrel structure, and material is stainless steel, wall thickness 0.2mm-0.3mm, and thin-walled is highly
40mm-50mm, its lower end are the fixation external screw thread (401) for installing activated charcoal (2), and top is welding chimb (402), in
Between be copper chamber pilot hole (403)；
Described heat insulation flange (5) is disk-shaped part, and material is stainless steel, and strain frame peace is respectively arranged with its flange face
Screw (501), outer casing base installation screw (502), mounting cap installation screw (503) and heat-insulated air slot (504) are filled, at middle part
Circumferential projection is that inner bag welds chimb (505), and central aperture is copper chamber via (506), and heat insulation flange (5) side is provided with liquid
Nitrogen hand-hole (507), thin-walled heat insulation loop (508) wall thickness are 0.15mm-0.2mm, and wall thickness is highly 15mm-20mm；
Described strain adjusted frame (6) is upper and lower two layers of circular ring structure, and material is stainless steel, and strain connecting rod (602) is a diameter of
There is the heat-insulated boss of installation that height is 3mm-5mm 0.5mm-2mm, length 25mm-30mm, strain adjusted frame (6) lower surface
(601), there is auxiliary frame fixing threaded hole (603) strain adjusted frame (6) upper surface；
Described mounting cap (7) is inverted drum structure, and material is stainless steel, wall thickness 2mm-3mm, is highly 40mm-
Mounting cap seal groove (702) and mounting cap mounting hole (703) are arranged at 60mm, bottom, and top surrounding is provided with thousand points of nut frame peaces
Screw (704) is filled, is upper side window mounting hole (705) among top；
Thousand points of described nut framves (8) are thickness 5mm-10mm disc structure, and material is aluminium alloy, in thousand points of nut framves (8)
Surrounding is thousand points of nuts (801), and top is nut frame fixing hole (802), and internal thousand points of nut fixing holes (803) are thousand points of nuts
Fixed column (804)；
Described device for fixing screen on headrest (11) is that disk band grabs structure, and material is stainless steel, and thickness 1mm-2mm, auxiliary is arranged at top
Frame mounting hole (1101), bottom are auxiliary frame top pin (1102) structure；
Described transition mounting blocks (14) are wafer architecture, and material is oxygen-free copper, thickness 2mm-5mm, transition mounting blocks (14)
Base fixing hole (1401) is arranged at bottom, and centre is light hole (1402), and outside is transition block fixing hole (1403), and top is circumferentially convex
It is that base is oriented to step (1404) to play side；
Described upside optical transmission window (10) is printing opacity wafer architecture with downside optical transmission window (19), and a diameter of 20mm-40mm is thick
It is K7 glass to spend for 1mm-3mm, material；
Suction interface (15) and pin interfaces (16) are welded on the side of outer casing base (1), and downside optical transmission window (19) is glued outer
The lower surface of shell base (1)；Liquid storage inner bag (4) welds together with heat insulation flange (5), passes cold copper chamber (3) and passes through heat insulation flange
(5) it is arranged on liquid storage inner bag (4), heat insulation flange (5) welds together with passing cold copper chamber (3), cold with biography on liquid storage inner bag (4)
Copper chamber (3) welds together；Activated carbon (17) is put into activated charcoal (2), then by activated charcoal (2) and liquid storage inner bag (4) spiral shell
Connect fixation；The upper end of outer casing base (1) and heat insulation flange (5) sealing are fixed together；By transition mounting blocks (14) with passing cold copper
Chamber (3) is installed by screw and fixed, and thermometric RTD (18) is glued to transition mounting blocks (14) lateral location；Four magnet (9)
S poles be glued be fixed on strain adjusted frame (6) top surrounding, device for fixing screen on headrest (11) is placed on strain adjusted frame (6)；Upside
Optical transmission window (10) is airtight to be glued to mounting cap (7) upper end, and four thousand points of nuts (24) are arranged on thousand points of nut framves (8),
The S poles of four magnet (9) are glued on four thousand points of nuts (24) again, thousand points of nut framves (8) and thousand points on mounting cap (7)
Nut frame is fixed by screw；Strain adjusted frame (6) equipped with device for fixing screen on headrest (11) is placed on heat insulation flange (5), auxiliary
Fixed mount (11) is pressed in the upper end of strain adjusted frame；Four coarse adjustment screws (12) are respectively against device for fixing screen on headrest (11)；Thousand points of spiral shells
The magnet (9) of female frame (8) is respectively at, mounting cap (7) and heat insulation flange (5) corresponding with the magnet (9) on strain adjusted frame (6)
Fixed by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720603856.7U CN206804968U (en) | 2017-05-27 | 2017-05-27 | For at low temperature to the device of Infrared Lens group centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720603856.7U CN206804968U (en) | 2017-05-27 | 2017-05-27 | For at low temperature to the device of Infrared Lens group centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206804968U true CN206804968U (en) | 2017-12-26 |
Family
ID=60743154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720603856.7U Withdrawn - After Issue CN206804968U (en) | 2017-05-27 | 2017-05-27 | For at low temperature to the device of Infrared Lens group centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206804968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144938A (en) * | 2017-05-27 | 2017-09-08 | 中国科学院上海技术物理研究所 | A kind of device being used at low temperature to Infrared Lens group centering |
-
2017
- 2017-05-27 CN CN201720603856.7U patent/CN206804968U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144938A (en) * | 2017-05-27 | 2017-09-08 | 中国科学院上海技术物理研究所 | A kind of device being used at low temperature to Infrared Lens group centering |
| CN107144938B (en) * | 2017-05-27 | 2022-11-08 | 中国科学院上海技术物理研究所 | Device for centering infrared lens group at low temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107144938A (en) | A kind of device being used at low temperature to Infrared Lens group centering | |
| CN102928088B (en) | A kind of poly-lens profound hypothermia infrared detector package structure be encapsulated in Dewar | |
| US20150346440A1 (en) | Optical fibre alignment | |
| CN206804968U (en) | For at low temperature to the device of Infrared Lens group centering | |
| CN205898305U (en) | Miniature dewar inner tube of integrated form | |
| US4262200A (en) | Detectors, and envelope arrangements and mounts for detectors | |
| CN109084902A (en) | Dewar and Dewar component are surveyed in chip testing alternating temperature | |
| CN105136313A (en) | Liquid nitrogen horizontal refrigeration device for testing infrared detector Dewar assembly and design method thereof | |
| CN105203006B (en) | Obturage the parallel installation of pressing disc in the-loop test bed high temperature furnace and Parallel testing method | |
| CN107526159A (en) | A kind of heavy caliber beat mirror | |
| CN109940066A (en) | A kind of semi-automatic aligning method of high purity copper rotary target welding end | |
| CN108045624A (en) | A kind of rotary type vacuum sealing system | |
| CN104357900A (en) | Crystal weighing apparatus applied to single crystal furnace | |
| CN109360670B (en) | Multifunctional detection device for self-adaptive centering nuclear fuel assembly | |
| CN110142546A (en) | Use the bellows J-T refrigerator self-adjusting mechanism assembling jig of diaphragm spring | |
| CN109807452A (en) | A kind of end welding method of rafifinal rotary target | |
| CN109807453A (en) | A kind of end welding method of high purity copper rotary target | |
| CN106872050A (en) | A kind of Dewar container for liquefied nitrogen of upper surface windowing | |
| CN105911670A (en) | Planar mirror optical pointing assembly used for space | |
| CN204148772U (en) | A kind of bellows jig | |
| CN206756337U (en) | Total air temperature sensor | |
| CN105511050B (en) | A kind of speculum elastic center supporting construction | |
| CN204356439U (en) | Be applied to the crystals weighed device of single crystal growing furnace | |
| CN107825156A (en) | A kind of aero-engine low-pressure turbine director assembly processing unit (plant) | |
| CN206649905U (en) | A kind of gusseted device of fast leveling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20221108 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20221108 |