CN107144938A - A kind of device being used at low temperature to Infrared Lens group centering - Google Patents
A kind of device being used at low temperature to Infrared Lens group centering Download PDFInfo
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- CN107144938A CN107144938A CN201710388013.4A CN201710388013A CN107144938A CN 107144938 A CN107144938 A CN 107144938A CN 201710388013 A CN201710388013 A CN 201710388013A CN 107144938 A CN107144938 A CN 107144938A
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- hole
- thousand points
- frame
- heat insulation
- lens group
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/003—Alignment of optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/007—Pressure-resistant sight glasses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a kind of device being used at low temperature to 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 windows.By by outer casing base, pass cold copper chamber, cavity that liquid storage inner bag and mounting cap are constituted to lens group is conditioned provides low-temperature vacuum environment.Magnet is placed on strain adjusted frame and hull outside, thousand outside adjusting means point nut, changes the repulsive force produced using magnet spacing and drive lens centering to finely tune.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.The present invention solves centering regulation problem at low temperature to Infrared Lens group, improves centering dress school precision.
Description
Technical field
The present invention relates 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 encapsulate to form infrared detector dewar assembly using Dewar mostly.In infrared detector module encapsulation technology developing direction
In, one of trend is the light path integrated form encapsulation development towards after low temperature.Develop light path integrated form after low temperature to encapsulate, be first
Because 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#, while 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 it is due to need 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 is operated between carrying out lens at normal temperatures, then is applied at low temperature.Due to existing
Accuracy of alignment under the influence of expanding with heat and contract with cold of erection stress and lens arrangement, 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, 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 described in) and carry out the method that Infrared Lens centering fills school using double-optical path instrument.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 when low temperature is used
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.
The content of the invention
Calibration device is filled with the centering of Infrared Lens group cryogenic opticses it is an object of the invention to provide a kind of infrared detector module,
It is applied to low-temperature infrared detector component and fills school with the centering of Infrared Lens group at low temperature.The present invention solves Infrared Lens
The dress school problem of group at low temperature, improves centering dress school precision.
The object of the present invention is achieved like this：A kind of described device being used at low temperature to 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, 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, transition peaces
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 is fixing hole 102, and base seal groove 103 and base installing hole 104, bucket wall side cloth are arranged at top
It is lower side window mounting hole 107 to be equipped with the middle of suction interface mounting hole 105 and pin interfaces mounting hole 106, bottom, such as Fig. 2 institutes
Show.
Described activated charcoal 2 is circular ring structure, and material is aluminium alloy, and wall thickness is 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 is 0.2mm-0.3mm, thin-walled height
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
Rise 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 two layers of circular ring structure up and down, and material selection stainless steel, strain connecting rod 602 is a diameter of
0.5mm-2mm, length is 25mm-30mm, and the lower surface of strain adjusted frame 6 has 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, and wall thickness is 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 framves and installs spiral shell
It is upper side window mounting hole 705 in the middle of hole 704, top, 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 is 1mm-2mm, and 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, and thickness is 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
Spend for 1mm-3mm, material is K7 glass.
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 fixed with passing cold copper chamber 3 by screw installation, 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 is respectively at corresponding with the magnet 9 on strain adjusted frame 6, and mounting cap 7 is fixed with heat insulation flange 5 by screw.Above
A kind of device being used at low temperature to Infrared Lens group centering is completed, as shown in Figure 1.
When carrying out centering regulation to lens group, the lens group base 13 that will be 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 is operated.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, screw after four coarse adjustment screws 12, then the sealing of mounting cap 7 is fixed on heat-insulated method
On orchid 5.The center for adjusting double light path equipment centering regulation platform is consistent with the center of secondary mirror 23, then adjusts corresponding 4 respectively
Thousand points of nuts 24, the centering for completing primary mirror 22 and secondary mirror 23 is operated.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 the present invention 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
Photocoagulation is on the pin interfaces hole 106 of outer casing base 1, and downside optical transmission window 18 is glued to outer casing base using epoxy glue is airtight
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 the copper chamber pilot hole 403 that cold copper chamber 3 is attached to through copper chamber via 506 on heat insulation flange 5 on liquid storage inner bag 4 will be passed
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, which is installed, to be 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. will be 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 is oriented to step 1404
It is interior, then the base fixing hole 1401 of transition mounting blocks 14 and lens group base 13 are fixed by screw installation, 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 installation corresponding with the magnet 9 on strain adjusted frame 6 of the magnet 9 on thousand points of nut framves 8, 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. the suction interface 15 of device is vacuumized by vacuum pump group, 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 is interconnected, and supplements liquid nitrogen in good time, it is to avoid liquid nitrogen is exhausted, and waits thermometric platinum
After resistance value stabilization shown in resistance 18, suction interface 15 is blocked airtight, acted on and tieed up with the low temperature suction of activated carbon in device 17
Hold device vacuum.
12. adjusting double light path equipment, the secondary mirror 23 and equipment center offset relation shown according to equipment adjusts correspondence 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, makes the stress deformation of strain connecting rod 602 of strain adjusted frame, drives 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 is operated.
13. remove the present apparatus from double light path equipment, and avoid touching each thousand points of nuts 24, using laser-beam welding machine, thoroughly
Cross upside light inlet window 10 to fix the laser weldings of the circumferential multiple spots of the progress of secondary mirror gap adjustment seam 2101, 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 adjusting the centering regulation platform of 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 is pushed up
Point position and equipment center offset relation, adjust corresponding thousand points of nuts 801 respectively, and the centering for completing primary mirror 22 and secondary mirror 23 is grasped
Make.
17. remove the present apparatus from double light path equipment, and avoid touching each thousand points of nuts 801, using laser-beam welding machine, thoroughly
Cross upside light inlet window 10 to fix the laser weldings of the circumferential multiple spots of the progress of primary mirror gap adjustment seam 2001, empty in liquid storage inner bag 4
The liquid nitrogen waiting device of residual is risen again.
It is achieved that the centering at low temperature to Infrared Lens group fills school above.
It is an advantage of the invention that：
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：601-heat-insulated boss is installed；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
The embodiment to the present invention 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 is used.The lens group is integrated in spy
Survey inside device assembly Dewar, operating temperature is 80K.
1. the method for the preparation of each parts in the present invention：
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 is arranged at individual a diameter of 4.5mm fixing hole 102, top, and groove width is 2mm, and groove depth is 1mm, base installing hole
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 in the middle of portion, a diameter of 30mm, as shown in Figure 2.
The material of described activated charcoal 2 is aluminium alloy, and wall thickness is 1mm, is highly 17mm, is distributed evenly at the bottom of 12
Individual a diameter of 2mm air-vent 201, fixed internal thread 202 is M20, and length is 9mm, as shown in Figure 3.
The material of the described cold copper chamber 3 of biography is oxygen-free copper, and 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 is 0.2mm, and its lower end is used to install work
Property charcoal box 2 fixation external screw thread 401 be M20, length is 9mm, and 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, strain 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
The anglec of rotation is 8 ° between hole, and holes, a diameter of 20mm of copper chamber via 506, 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 is 0.15mm, is 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 of connecting rod 602, length is 30mm, should
Become the height of the heat-insulated boss 601 of installation of the lower surface of adjusting bracket 6 into 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, and wall thickness is 2mm, is highly 50mm, and bottom uniform 8 is a diameter of
4.2mm mounting cap mounting hole 703, bottom outside has diameter 2mm mounting cap seal groove 702, and top is 4 M2, thousand points of spiral shells
The blind hole of female frame installation screw 704, a diameter of 30mm of window mounting hole 705, as shown in Figure 9.
The material of thousand points of described nut framves 8 is aluminium alloy, and thickness is 6mm, is circumferentially evenly distributed with 4 regulation strokes and is
0-20mm thousand points of nuts 24, the nut frame fixing hole 802 at top is 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 is 1.5mm, and length is 38mm, and 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 is 4mm, and 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 is K5 glass.
2. assemble and use step：
(1) suction interface 15 is by laser welding on the suction interface hole 105 of outer casing base 1, and pin interfaces 16 pass through
Laser welding is on the pin interfaces hole 106 of outer casing base 1, and bonding power is 0.66kw, and pulsewidth is 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 the copper chamber pilot hole 403 that cold copper chamber 3 is attached to through copper chamber via 506 on heat insulation flange 5 on liquid storage inner bag 4 will be passed
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 is 1050 DEG C.
(3) weight is put into tiling in activated charcoal 2 for 14 grams of activated carbon 17, then activated charcoal 2 is fixed into interior spiral shell
Line 202 is fixed after the rotation installation of external screw thread 401, extruding activated carbon 17 with being fixed on liquid storage inner bag 4.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 is fixed with the upper bed-plate mounting hole 104 of outer casing base 1 by 8 M4 screws.
(4) it will be 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 and be oriented to step 1404
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 using epoxy glue the S poles of 4 a diameter of 5mm × 3mm magnet 9 are glued into four
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 and fixation is installed by 4 M2 screws, 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
Iron 9 is corresponding to be installed, and 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) suction interface 15 of device is vacuumized by Agilent vacuum exhaust unit, vacuum higher than 5.0 ×
10-4During Pa, using liquid nitrogen funnel, constantly injected at appropriate liquid nitrogen, liquid nitrogen hand-hole to the liquid nitrogen hand-hole 507 of heat insulation flange 5
Frosting is also easy to produce, nitrogen injection need to be used to avoid frosting, when resistance value shown in thermometric RTD 18 is 23.6 Ω, temperature is 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, corresponding thousand points of nuts 24 are adjusted respectively, and it is 1 μm finally to make deviation between secondary mirror 23 and equipment center, completes secondary mirror 23
Centering with lens group base 13 is operated.
(13) remove the present apparatus from double light path equipment, and avoid touching each thousand points of nuts 24, using laser-beam welding machine, thoroughly
Cross upside light inlet window 10 to fix the laser weldings that secondary mirror gap adjustment seam 2101 is often located at 4 points, then empty in liquid storage inner bag 4
The liquid nitrogen of residual, is risen again, as shown in figure 12 using nitrogen by liquid nitrogen hand-hole 507 to the air blowing accelerator of liquid storage inner bag 4.
(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, and corresponding thousand points of spiral shells are adjusted respectively
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 regulation double light path equipment, primary mirror 22 and equipment center before not adjusting
Between deviation be 72 μm, corresponding thousand points of nuts 801 are adjusted 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 is operated, as shown in figure 13.
(17) present apparatus is removed from double light path equipment, and avoids touching each thousand points of nuts 24, German ROFIN laser is used
Bonding machine, stitches 2001 laser weldings for circumferentially often locate at 4 points to primary mirror gap adjustment through upside light inlet window 10 and fixes, empty
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 is used 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 is fixing hole (102), and base seal groove (103) and base installing hole (104), bucket wall are arranged at top
It is lower side window mounting hole (107) that side, which has in the middle of suction interface mounting hole (105) and pin interfaces mounting hole (106), bottom,；
Described activated charcoal (2) is circular ring structure, and material is aluminium alloy, and wall thickness is 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, and it is printing opacity chamber in the middle of 40mm-60mm to be highly
(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, and wall thickness is 0.2mm-0.3mm, and thin-walled is highly
40mm-50mm, its lower end is 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 inner bag welding 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 is 0.15mm-0.2mm, and wall thickness is highly 15mm-20mm；
Described strain adjusted frame (6) is two layers of circular ring structure up and down, and material is stainless steel, and strain connecting rod (602) is a diameter of
0.5mm-2mm, length is 25mm-30mm, and there is the heat-insulated boss of installation that height is 3mm-5mm 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, and wall thickness is 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
Fill in the middle of screw (704), top is upper side window mounting hole (705)；
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 for thousand points of nuts inside nut frame fixing hole (802), thousand points of nut fixing holes (803)
Fixed column (804)；
Described device for fixing screen on headrest (11) is that disk band grabs structure, and material is stainless steel, and thickness is 1mm-2mm, and auxiliary is arranged at top
Frame mounting hole (1101), bottom is auxiliary frame top pin (1102) structure；
Described transition mounting blocks (14) are wafer architecture, and material is oxygen-free copper, and thickness is 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
Spend for 1mm-3mm, material is K7 glass；
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), with passing cold 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388013.4A CN107144938B (en) | 2017-05-27 | 2017-05-27 | Device for centering infrared lens group at low temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388013.4A CN107144938B (en) | 2017-05-27 | 2017-05-27 | Device for centering infrared lens group at low temperature |
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| CN107144938B CN107144938B (en) | 2022-11-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683278A (en) * | 2019-01-30 | 2019-04-26 | 杭州电子科技大学 | Heavy caliber infrared telescope adjustable support based on gradient type porous structure |
| CN112946852A (en) * | 2021-03-24 | 2021-06-11 | 中国科学院西安光学精密机械研究所 | Primary and secondary mirror system assembling and adjusting device and assembling and adjusting process |
| CN113985559A (en) * | 2021-10-27 | 2022-01-28 | 河南平原光电有限公司 | Wide-spectrum long-focus high-resolution lens and adjustment method |
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| JP2010197892A (en) * | 2009-02-27 | 2010-09-09 | Hitachi Media Electoronics Co Ltd | Lens drive device and optical pickup device incorporating the same |
| 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 |
| CN206804968U (en) * | 2017-05-27 | 2017-12-26 | 中国科学院上海技术物理研究所 | For at low temperature to the device of Infrared Lens group centering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001304564A (en) * | 2000-04-17 | 2001-10-31 | Matsushita Electric Ind Co Ltd | High frequency heating device |
| JP2010197892A (en) * | 2009-02-27 | 2010-09-09 | Hitachi Media Electoronics Co Ltd | Lens drive device and optical pickup device incorporating the same |
| 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 |
| CN206804968U (en) * | 2017-05-27 | 2017-12-26 | 中国科学院上海技术物理研究所 | For at low temperature to the device of Infrared Lens group centering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109683278A (en) * | 2019-01-30 | 2019-04-26 | 杭州电子科技大学 | Heavy caliber infrared telescope adjustable support based on gradient type porous structure |
| CN112946852A (en) * | 2021-03-24 | 2021-06-11 | 中国科学院西安光学精密机械研究所 | Primary and secondary mirror system assembling and adjusting device and assembling and adjusting process |
| CN113985559A (en) * | 2021-10-27 | 2022-01-28 | 河南平原光电有限公司 | Wide-spectrum long-focus high-resolution lens and adjustment method |
| CN113985559B (en) * | 2021-10-27 | 2023-08-22 | 河南平原光电有限公司 | Wide-spectrum long-focal-length high-resolution lens and adjustment method |
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|---|---|
| CN107144938B (en) | 2022-11-08 |
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