CN107045251A - A kind of space camera active refrigeration vacuum sealing focal plane subassembly - Google Patents
A kind of space camera active refrigeration vacuum sealing focal plane subassembly Download PDFInfo
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- CN107045251A CN107045251A CN201710343241.XA CN201710343241A CN107045251A CN 107045251 A CN107045251 A CN 107045251A CN 201710343241 A CN201710343241 A CN 201710343241A CN 107045251 A CN107045251 A CN 107045251A
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- focal plane
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- casing
- cold screen
- active refrigeration
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 title claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract 2
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 229910017083 AlN Inorganic materials 0.000 claims description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000005679 Peltier effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910021418 black silicon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Studio Devices (AREA)
Abstract
The present invention proposes a kind of active refrigeration, vacuum-packed space camera active refrigeration vacuum sealing focal plane subassembly, can effectively solve the problems, such as moisture contamination during traditional camera focal plane detector refrigeration by detector refrigeration to less than 60 DEG C.The component is repaiied including focal plane case cuts pad, trim ring, vacuum glazing, vacuum focal plane casing, vacuum sealing connector, cooling assembly, focal plane bottom seat, focal plane bottom plate, heat pipe, relaying casing, thermistor and TEC；Vacuum glazing compresses incidence hole by trim ring sealing, and the front end of trim ring, which is provided with focal plane case, repaiies and cut pad；Cooling assembly includes cold screen window, cold screen, active refrigeration CCD components and cold screen substrate；Cold screen window is arranged in cold screen breach；The back side of cold screen substrate is provided with multiple TECs and thermistor；Cooling assembly, focal plane bottom seat, focal plane bottom plate, heat pipe are arranged in the cavity of vacuum focal plane casing and relaying casing composition, and the back side of focal plane bottom plate is provided with heat pipe.
Description
Technical field
The present invention relates to camera sealing device field, and in particular to a kind of space camera active refrigeration vacuum sealing focal plane group
Part.
Background technology
The space astronomy camera integration time for observing dark weak signal target is long, and the requirement suppressed to noise of detector is very high, typically
Detector dark current is reduced by the way of refrigeration detector, camera signal to noise ratio is improved.Thermoelectric cooling (Thermo-Electric
Cooling, TEC) technology is a kind of refrigerating method using peltier effect, it does not need any working medium, no-movable part, knot
Structure is simple, is extremely suitable for the refrigeration application of camera space focal plane, but spacecraft cooling focal plane is in ground progress testing experiment,
Refrigeration focal plane temperature is generally below ambient dew point, and condensation vapor has a strong impact on testing experiment effect to low temperature detector surface, very
Space probe may extremely be damaged.
To eliminate the solidifying white phenomenon of condensation, camera space on the ground testing experiment when focal plane case is typically stored in nitrogen cabinet
In, make to be filled with nitrogen in focal plane, and moisture content is absorbed using drier.But this mode is for needing to carry out testing experiment for a long time
Astronomical camera, steam can slowly enter casing, influence test effect, and the powder of drier can pollute focal plane, be unfavorable for
AEROSPACE APPLICATION.
Traditional camera space focal plane case typically uses the aluminum alloy materials of good heat conductivity.But it is very low for cryogenic temperature
Astronomical camera focal plane for, the thermal conductive resin of aluminium alloy can make the temperature of seal glass window be reduced to dew-point temperature with
Under, make condensation vapor to glass window, be unfavorable for testing experiment, while the thermal coefficient of expansion of aluminium alloy and TEC is not
Matching, can make TEC produce larger thermal stress, reduce focal plane security.
The content of the invention
To solve the technical problem of existing low temperature focal plane condensation vapor, the invention provides a kind of active refrigeration, vacuum are close
The space camera active refrigeration vacuum sealing focal plane subassembly of envelope, detector refrigeration can be arrived less than -60 DEG C, effectively solve tradition
Moisture contamination problem when camera focal plane detector freezes.
Technical solution provided by the present invention is：
A kind of space camera active refrigeration vacuum sealing focal plane subassembly, including focal plane case are repaiied and cut pad 1, trim ring 2, vacuum glass
Glass window 3, vacuum focal plane casing 4, vacuum sealing connector 7, cooling assembly, focal plane bottom seat 10, focal plane bottom plate 11, heat pipe
12nd, relaying casing 13, thermistor and TEC 14；The front end of vacuum focal plane casing 4 is provided with outside incidence hole, incidence hole
Edge be provided with boss, vacuum glazing 3 compresses incidence hole by the sealing of trim ring 2, and the front end of trim ring 2, which is provided with focal plane case, repaiies and cut
Pad 1；The side of vacuum focal plane casing 4 is provided with insert hole；The side of vacuum focal plane casing 4 is provided with vacuum suction interface 15 and very
Porosimter interface 16；Cooling assembly is arranged in the cavity of focal plane bottom seat 10；Cooling assembly include cold screen window 5, cold screen 6,
Active refrigeration CCD components 8 and cold screen substrate 9；The front end of cold screen 6 is provided with breach, and cold screen window 5 is arranged in breach；Cold screen bottom
Plate 9 is provided with window, and active refrigeration CCD components 8 are arranged between cold screen 6 and cold screen substrate 9, the back side of active refrigeration CCD components 8 peace
The window of the TEC 14 and thermistor of dress through cold screen substrate 9 is stretched out outside cold screen substrate 9, the back side of cold screen substrate 9
Provided with multiple TECs 14 and thermistor, active refrigeration CCD components 8, thermistor and TEC 14 are by true
The insert hole of the empty side of focal plane casing 4 is connected with vacuum sealing connector 7；Cooling assembly, focal plane bottom seat 10, focal plane bottom plate
11st, heat pipe 12 is arranged in the cavity that vacuum focal plane casing 4 and relaying casing 13 are constituted；Focal plane bottom plate 11 is arranged on focal plane
The rear of bottom seat 10, the back side of focal plane bottom plate 11 is provided with heat pipe 12, using focal plane bottom seat 10 and focal plane bottom plate 11
Seal the rear end of vacuum focal plane casing 4；Contact surface, vacuum focal plane casing 4 and the focal plane of vacuum focal plane casing 4 and vacuum glazing 3
Sealing ring is equipped with the contact surface of the contact surface of bottom seat 10, focal plane bottom seat 10 and focal plane bottom plate 11.
Further, the material of vacuum focal plane casing 4 is titanium alloy.The relatively low coefficient of heat conduction of titanium alloy can be effectively improved
Vacuum glass window temperature, prevents condensation vapor to glass window.
Further, the section of vacuum sealing connector 7 is track type circular section, and the section of vacuum sealing connector 7 is provided with rubber
Rubber cushion 17.Ensure the vacuum leakproofness with extraneous electrical connections.
Further, the surrounding of vacuum focal plane casing 4 is evenly arranged with eight lugs, and the surrounding of relaying casing 13 is provided with
Eight screwing through hole, the vacuum focal plane casing 4 is fixedly connected with relaying casing 13 respectively by screw.
Further, focal plane bottom plate 11 is using the modulated molybdenum-copper bottom plate of thermal coefficient of expansion.Selection and thermoelectricity system
The molybdenum-copper material of cooler (TEC) material thermal expansion coefficient matching solves TEC under big temperature difference condition as focal plane bottom plate
Thermal stress issues, meet the requirement of camera space focusing plane case high rigidity, high intensity and high reliability.
Further, the back side of cold screen substrate 9 is provided with four TECs 14 and four thermistors；Active refrigeration
The back mounted TEC 14 of CCD components 8 and thermistor quantity are two.
Further, it is provided with heat insulating mattress between vacuum focal plane casing 4 and relaying casing 13.
Further, the substrate of active refrigeration CCD components 8 is the gold-plated processing of other surfaces outside aluminium nitride ceramics, photosurface,
Reduce radiation heat transfer.
Further, the surfaces externally and internally of cold screen 6 and cold screen substrate 9 carries out gold-plated processing, and focal plane bottom plate 11 is towards master
The gold-plated processing in side of dynamic refrigeration CCD components 8, reduces radiation heat transfer.
Further, coated with thermally conductive silicone grease between the contact surface of heat pipe 12 and focal plane bottom plate 11, to reduce thermal contact resistance.
Advantages of the present invention is：
1. can effectively it be solved when traditional camera focal plane detector freezes by detector active refrigeration to less than -60 DEG C
Moisture contamination problem.
2nd, the molybdenum-copper material matched with TEC (TEC) material thermal expansion coefficient is selected as focal plane bottom plate,
The thermal stress issues of TEC under big temperature difference condition are solved, camera space focusing plane case high rigidity, high intensity and highly reliable is met
The requirement of property.
The structure such as detachable vacuum seal when 3. focal plane subassembly has active refrigeration, vacuum sealing, small light, transmitting
Feature.
4th, the present invention is sealed using rubber seal to cavity where camera focal plane CCD/CMOS, solves steam
The problem of being polluted into focal plane cavity focusing plane.
5th, focal plane case side wall of the present invention has vacuum suction interface and vacuometer interface, and gas inside focal plane case can be shown in real time
Pressure.
6th, the CCD component externals inside focal plane case of the present invention are covered with cold screen, and cold screen is freezed using 4 small-sized TEC, is
Internal focal plane creates low temperature environment, and influence of the exterior space heat radiation to CCD temperature is reduced to greatest extent.
7th, connector is contacted using track type circular section rubber blanket with focal plane case side wall in the present invention, it is ensured that be electrically connected with the external world
The vacuum leakproofness of socket part point.
8th, the sub-buckle structure design in the present invention between part, had both met the overall closure of focal plane case, Jiao is prevented again
The problems such as there is electromagnetic leakage in face case.
9th, the bottom plate of focal plane case uses the material heat of TEC in molybdenum-copper material, with CCD components in the present invention
The coefficient of expansion is consistent, it is ensured that security of the TEC in a wide range of temperature changing process.
Brief description of the drawings
Fig. 1 is camera vacuum focal plane case overall structure sectional view；
Fig. 2 is the explosive view of camera vacuum focal plane case；
Fig. 3 is vacuum focal plane case shell mechanism schematic diagram；
Fig. 4 is CCD components and gold-plated cold screen structural representation；
Fig. 5 is the structural representation of vacuum sealing connector.
Wherein reference is：1- focal plane casees, which are repaiied, cuts pad, 2- trim rings, 3- vacuum glazings, 4- vacuum focal plane casings, 5-
Cold screen window, the cold screens of 6-, 7- vacuum sealing connectors, 8- active refrigeration CCD components, the cold screen substrates of 9-, 10- focal planes bottom seat,
11- focal plane bottom plates, 12- heat pipes, 13- relaying casings, 14- TECs (TEC), 15- vacuum suction interfaces, 16- vacuum
Degree meter interface, 17- rubber blankets.
Embodiment
Present disclosure is described in further detail below in conjunction with the drawings and specific embodiments：
As shown in Figure 1, Figure 2, Figure 3 shows, space camera active refrigeration vacuum sealing focal plane subassembly is repaiied including focal plane case and cuts pad
1st, trim ring 2, vacuum glazing 3, vacuum focal plane casing 4, vacuum sealing connector 7, cooling assembly, focal plane bottom seat 10, focal plane
Bottom plate 11, heat pipe 12, relaying casing 13, thermistor and TEC 14；The front end of vacuum focal plane casing 4 is provided with into light
Edge outside hole, incidence hole is provided with boss, and vacuum glazing 3 is sealed on the casing being pressed on outside incidence hole by trim ring 2, pressure
The front end of circle 2, which is provided with focal plane case and repaiied, cuts pad 1；The side of vacuum focal plane casing 4 is provided with insert hole；Vacuum focal plane casing 4
Side is provided with vacuum suction interface 15 and vacuometer interface 16；Cooling assembly is arranged in the cavity of focal plane bottom seat 10；System
Cold component includes cold screen window 5, cold screen 6, active refrigeration CCD components 8 and cold screen substrate 9；The front end of cold screen 6 is provided with breach, cold
Shield window 5 to be arranged in breach, active refrigeration CCD components 8 are arranged between cold screen 6 and cold screen substrate 9；Cold screen substrate 9 is provided with
Window, the back mounted TEC 14 of active refrigeration CCD components 8 and thermistor stretch out cold through the cold window of screen substrate 9
Outside screen substrate 9, the back side of cold screen substrate 9 is provided with multiple TECs 14 and thermistor, active refrigeration CCD components 8, temperature-sensitive
Resistance and TEC 14 are connected by the insert hole of the side of vacuum focal plane casing 4 with two vacuum sealing connectors 7.
Cooling assembly, focal plane bottom seat 10, focal plane bottom plate 11, heat pipe 12 are arranged at vacuum focal plane casing 4 and relaying
In the cavity that casing 13 is constituted；Focal plane bottom plate 11 is arranged on the rear of focal plane bottom seat 10, and the back side of focal plane bottom plate 11 is set
Heat pipe 12 is equipped with, the rear end of vacuum focal plane casing 4 is sealed using focal plane bottom seat 10 and focal plane bottom plate 11.Vacuum focal plane casing 4
Contact surface, focal plane bottom seat 10 and the focal plane of contact surface, vacuum focal plane casing 4 and focal plane bottom seat 10 with vacuum glazing 3
Sealing ring is equipped with the contact surface of bottom plate 11.
The front end of vacuum focal plane casing 4 is connected with camera rear optical system flange, is designed using flange, prevents veiling glare from entering burnt
Face, the front end incidence hole of vacuum focal plane casing 4 is sealed using vacuum glazing 3, using focal plane bottom seat 10 and molybdenum-copper focal plane
Active refrigeration CCD components 8, back are installed on the rear end of the sealing vacuum focal plane of bottom plate 11 casing 4, molybdenum-copper focal plane bottom plate 11
Using heat pipe 12 is installed, the heat of CCD components is transferred out, vacuum focal plane casing 4 with relaying casing 13 using screw and every
Heat pad is connected, and relaying casing 13 is connected with rear end focal plane electronic packages.CCD components are freezed by two two grades of TEC, CCD components
Outer cover low temperature cold screen 6.
Focal plane case, which is repaiied, cuts pad 1 positioned between the front end of vacuum focal plane casing 4 and rear optical system, and focal plane case, which is repaiied, cuts pad 1
Made using heat-barrier material, the focusing plane case of perpendicularity and focal plane case can be with to(for) optical axis be entered for the distance of rear optical system
Row is repaiied and cut, and the heat transfer of front panel can be completely cut off again to vacuum focal plane case.
The thickness of vacuum glazing 3 is calculated analytically, and the thickness of vacuum glazing 3 is 8 ㎜, a diameter of 40 ㎜, can
Ensure optics focal plane correct position, face shape at atmosheric pressure is can guarantee that again, vacuum glazing 3 is arranged on true using trim ring 2
The empty front end of focal plane casing 4.Sealing effectiveness is obtained using rubber blanket.
The substrate of active refrigeration CCD components 8 is aluminium nitride ceramics, in addition to photosurface, the gold-plated processing of CCD components other surfaces.
2 thermistors are pasted in CCD module boards upper surface close to read-out area, for CCD temperature to be monitored and controlled.CCD flexible cables
It is connected with vacuum sealing connector 7, CCD substrates back is using two TEC active refrigerations, it is ensured that the temperature in CCD runnings.
As shown in figure 4, gold-plated cold screen 6 and gold-plated cold screen substrate 9, are made using the higher aluminium alloy of thermal conductivity, in order to subtract
Small radiation heat transfer, its surfaces externally and internally carries out gold-plated processing, and cold screen substrate 9 is designed using symmetrical plug-in type, the left half of and right side half
While from the right and left insertion active refrigeration CCD components 8, avoiding TEC.Cold screen substrate 9 is connected by screw with cold screen 6, using 4
TEC refrigeration is built for CCD respectively pastes a thermistor at low-temp radiating environment, cold 4 TEC positions of the surface of screen 6 correspondence.Cold screen
Window 5 is corresponding with CCD photosurfaces, is cuboid window.
Molybdenum-copper bottom plate 11 is gold-plated towards CCD sides, and inner surface is 6 TEC hot junction mounting surface, passes through GD-414C
TEC is pasted on TEC substrate inner surfaces by black silicon rubber, and is connected by 12 screws with focal plane bottom seat 10, with rubber blanket
Realize vacuum sealing.The outer surface of focal plane bottom plate 11 be the evaporation ends mounting surface of heat pipe 12, two heat pipes by 12 mounting holes with
The back side of focal plane bottom plate 11 is connected, coated with thermally conductive silicone grease between contact surface, to reduce thermal contact resistance.
Vacuum focal plane casing 4 is integrally formed processing and fabricating by titanium alloy, is pacified between rear optical system using Titanium Alloy Screw
Dress is fixed, and is connected by 12 screws.Two sides of focal plane casing are provided with 2 hermetically sealed connectors, are utilized respectively flexible cable
CCD and TEC is connected, two other side is respectively vacuum suction interface 15 and vacuometer interface 16.
As shown in figure 5, the Surface Machining annular groove of vacuum sealing connector 7, embedded track type circular section rubber blanket 17, with
Vacuum focal plane casing 4 is installed to obtain vacuum sealing effect.
Claims (10)
1. a kind of space camera active refrigeration vacuum sealing focal plane subassembly, it is characterised in that：Repaiied including focal plane case cut pad (1),
Trim ring (2), vacuum glazing (3), vacuum focal plane casing (4), vacuum sealing connector (7), cooling assembly, focal plane bottom seat
(10), focal plane bottom plate (11), heat pipe (12), relaying casing (13), thermistor and TEC (14)；
The edge that the front end of vacuum focal plane casing (4) is provided with outside incidence hole, incidence hole is provided with boss, and vacuum glazing (3) leads to
Trim ring (2) sealing incidence hole is crossed, the front end of trim ring (2), which is provided with focal plane case, repaiies and cut pad (1)；The side of vacuum focal plane casing (4)
Face is provided with insert hole；The side of vacuum focal plane casing (4) is provided with vacuum suction interface (15) and vacuometer interface (16)；
Cooling assembly is arranged in the cavity of focal plane bottom seat (10)；Cooling assembly includes cold screen window (5), cold screen (6), active
Freeze CCD components (8) and cold screen substrate (9)；The front end of cold screen (6) is provided with breach, and cold screen window (5) is arranged in breach；It is cold
Screen substrate (9) is provided with window, and active refrigeration CCD components (8) are arranged between cold screen (6) and cold screen substrate (9), active refrigeration
The window of CCD components (8) back mounted TEC (14) and thermistor through cold screen substrate (9) stretches out cold screen substrate
(9) outside, the back side of cold screen substrate (9) is provided with multiple TECs (14) and thermistor, active refrigeration CCD components (8), heat
Quick resistance and TEC (14) are connected by the insert hole of vacuum focal plane casing (4) side with vacuum sealing connector (7)；
Cooling assembly, focal plane bottom seat (10), focal plane bottom plate (11), heat pipe (12) be arranged at vacuum focal plane casing (4) and
In the cavity for relaying casing (13) composition；Focal plane bottom plate (11) is arranged on the rear of focal plane bottom seat (10), focal plane bottom plate
(11) the back side is provided with heat pipe (12), and vacuum focal plane casing is sealed using focal plane bottom seat (10) and focal plane bottom plate (11)
(4) rear end；
The contact surface of vacuum focal plane casing (4) and vacuum glazing (3), vacuum focal plane casing (4) and focal plane bottom seat (10)
Sealing ring is equipped with the contact surface of contact surface, focal plane bottom seat (10) and focal plane bottom plate (11).
2. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 1, it is characterised in that：Vacuum focal plane
Casing (4) material is titanium alloy.
3. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 2, it is characterised in that：Vacuum sealing
Connector (7) section is track type circular section, and vacuum sealing connector (7) section is provided with rubber blanket (17).
4. the space camera active refrigeration vacuum sealing focal plane subassembly according to claim 1 or 2 or 3, it is characterised in that：Very
The surrounding of empty focal plane casing (4) is evenly arranged with eight lugs, and the surrounding of relaying casing (13) is provided with eight screwing through hole, institute
Vacuum focal plane casing (4) is stated to be fixedly connected with relaying casing (13) by screw.
5. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 4, it is characterised in that：Focal plane bottom
Plate (11) is using the modulated molybdenum-copper bottom plate of thermal coefficient of expansion.
6. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 5, it is characterised in that：Cold screen substrate
(9) the back side is provided with four TECs (14) and four thermistors；Active refrigeration CCD components (8) back mounted heat
Electric refrigerator (14) and thermistor quantity are two.
7. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 6, it is characterised in that：Vacuum focal plane
Heat insulating mattress is provided between casing (4) and relaying casing (13).
8. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 7, it is characterised in that：Active refrigeration
CCD components (8) substrate is the gold-plated processing of other surfaces outside aluminium nitride ceramics, photosurface.
9. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 8, it is characterised in that：Cold screen (6)
Gold-plated processing is carried out with the surfaces externally and internally of cold screen substrate (9), and focal plane bottom plate (11) is towards active refrigeration CCD components (8)
The gold-plated processing in side.
10. space camera active refrigeration vacuum sealing focal plane subassembly according to claim 9, it is characterised in that：Heat pipe
(12) the coated with thermally conductive silicone grease between the contact surface of focal plane bottom plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343241.XA CN107045251B (en) | 2017-05-16 | 2017-05-16 | Space camera active refrigeration vacuum seal focal plane assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343241.XA CN107045251B (en) | 2017-05-16 | 2017-05-16 | Space camera active refrigeration vacuum seal focal plane assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107045251A true CN107045251A (en) | 2017-08-15 |
| CN107045251B CN107045251B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710343241.XA Expired - Fee Related CN107045251B (en) | 2017-05-16 | 2017-05-16 | Space camera active refrigeration vacuum seal focal plane assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752198A (en) * | 2019-10-28 | 2020-02-04 | 中国电子科技集团公司第四十四研究所 | Back-illuminated avalanche gain type EMCCD refrigeration packaging structure and method |
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2017
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| Publication number | Publication date |
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| CN107045251B (en) | 2022-08-19 |
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