CN106772884B - A kind of low-temperature lens compress release type and disappear thermal stress support construction - Google Patents
A kind of low-temperature lens compress release type and disappear thermal stress support construction Download PDFInfo
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- CN106772884B CN106772884B CN201611192366.9A CN201611192366A CN106772884B CN 106772884 B CN106772884 B CN 106772884B CN 201611192366 A CN201611192366 A CN 201611192366A CN 106772884 B CN106772884 B CN 106772884B
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Abstract
A kind of low-temperature lens of the present invention compress release type and disappear thermal stress support construction, include load-carrying construction, camera lens mounting flange, axial stress-removal compressing structure, housing screw, radial positioning column, radial positioning column gland.The method have the characteristics that the characteristics of using the adjustment of low temperature aluminium camera lens room temperature, low-temperature working, which can at normal temperature be fixedly clamped to low-temperature lens using big pretightning force realization, meet dynamic stiffness requirement when low-temperature lens transport and transmitting；In low-temperature working, the release of pressing force is realized using the modified difference that camera lens mounting flange and axial stress-removal compressing structure low-temperature shrink generate, to enable low temperature aluminium camera lens free shrink, eliminates thermal stress.The present invention uses the structure type for compressing under room temperature, discharging under low temperature, and while disappearing thermal stress under realizing operating temperature, can take into account support has biggish dynamic rate, can be applied to the thermal stress support that disappears for the low-temperature lens for working in profound hypothermia.
Description
Technical field
Disappear thermal stress support construction form the present invention relates to a kind of low-temperature lens, works in depth applied to optical remote sensing field
The support of the low temperature aluminium camera lens of low temperature.
Background technique
In optical remote sensing field, when camera lens support construction material and camera lens material thermal expansion coefficient mismatch, temperature becomes
Changing the thermal stress generated will cause the deterioration of lens imaging quality.In order to solve this problem, camera lens support it is usually necessary to use
The thermal stress that disappears structure.The solution generallyd use is camera lens support using flexible hinge structure form, and flexible hinge is by soft
Property element deformation transmit movement and power, specific structure connects two rigid bodies by middle spring deformation unit and forms, pass through
Temporary location flexible deformation realizes two rigid body relative motions.When reflecting mirror or camera lens support are since temperature change generates expansion or receives
When contracting, flexible hinge stress is acted on and is deformed, and when the rigidity of flexible hinge is suitable, deformation can absorb most deformation energy
Amount, to eliminate thermal stress." space optical remote sensor reflecting mirror flexible support is set for paper that optical precision engineering periodical is included
Meter ", describe a kind of above-mentioned flexible hinge structure form.This flexible hinge needs to find reasonable structure shape in design
Formula meets the thermal stress requirement that disappears, while can satisfy dynamic stiffness requirement again, and in the big temperature difference, needs to be significantly increased soft
Property hinge flexibility, this leads to be difficult to take into account the dynamic stiffness requirement of structure, is unable to satisfy fundamental frequency requirement when means of transport and transmitting.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, the adjustment of low temperature aluminium camera lens room temperature, low temperature work are utilized
The characteristics of making designs one kind and disappears thermal stress support construction, can realize camera len fastening using biggish pressing force at normal temperature
It is fixed, in low-temperature working, the release of pressing force is realized using the modified difference that thermal expansion generates, to enable low temperature aluminium camera lens certainly
By shrinking, thermal stress is eliminated, moving while disappearing thermal stress under realizing low-temperature lens operating temperature, and when can take into account inoperative
Rigidity requirement.
Above-mentioned purpose of the invention is achieved by following technical solution:
A kind of low-temperature lens compress release type and disappear thermal stress support construction, comprising: axial stress-removal compressing structure (1), pressure
Tight screw (2), camera lens mounting flange (3), radial positioning column gland (4), radial positioning column (5), load-carrying construction (6)；
Axial stress-removal compressing structure (1), there is one section of annulus of round ring boss for inside, and boss is located at annulus end face
Side is provided with two groups of rectangular straight slot in boss side surfaces, and every group of rectangular straight slot includes the multiple rectangular straight slot of a row, two groups of rectangular straight slot
In parallel and it is staggered；Multiple mounting holes are provided on annulus；
Radial positioning column (5) cuts for cylinder and on the side of cylinder identical slot；
Load-carrying construction (6) is hollow cylindrical structure, and inner wall has protrusion, and side wall has multiple groups installation radial positioning column (5)
The mounting hole of through-hole and radial positioning column gland (4)；
The side of camera lens mounting flange (3) is provided with multiple notches, and multiple notches are uniformly distributed, and camera lens mounting flange (3) has
The side of notch is protruded into load-carrying construction (6), and the male cooperation with load-carrying construction (6)；
Multiple groups installation radial positioning column (5) of the multiple notches and load-carrying construction (6) side wall of camera lens mounting flange (3) is led to
The mounting hole of hole and radial positioning column gland (4) is opposite；
The annulus of axial stress-removal compressing structure (1) is fixed on an end face of load-carrying construction (6) by housing screw (2)
On, the boss of axial stress-removal compressing structure (1) is bonded with the side of camera lens mounting flange (3), camera lens mounting flange (3) it is another
The male cooperation of side and load-carrying construction (6)；
The outer diameter of camera lens mounting flange (3) is less than the internal diameter of load-carrying construction (6)；
Axial stress-removal compressing structure (1) is fixed on load-carrying construction (6) by housing screw (2) with certain pretightning force；
Camera lens mounting flange (3) is pressed on load-carrying construction (6) by the pressing force that housing screw (2) generates simultaneously；
Camera lens mounting flange (3), the annular flange on the outside of lens barrel being supported for needs；
Multiple radial positioning columns (5) are protruded by the through-hole of multiple groups installation radial positioning column (5) of load-carrying construction (6) side wall
In load-carrying construction (6), and cooperate with multiple notches of camera lens mounting flange (3)；
Radial positioning column (5) is pressed on the side wall of load-carrying construction (6) by radial positioning column gland (4) by screw；
Radial positioning column (5) is radially oriented column gland (4) and is pressed in the notch of camera lens mounting flange (3), radial fixed
Circumference radial equipartition of the position column (5) in camera lens mounting flange (3).
When cooling to low temperature from room temperature, when the radial dimension of camera lens mounting flange (3) reduces, radial positioning column (5) can begin
It is withstood on camera lens mounting flange (3) eventually, and applies identical power, play the function of radial positioning.
Face is leaned in load-carrying construction (6), the installation for providing axial stress-removal compressing structure (1) and camera lens mounting flange (3),
Be fixed on low temperature aluminium camera lens can on load-carrying construction (6) by camera lens mounting flange (3).
Through slot on the boss of axial stress-removal compressing structure (1) makes boss have certain flexibility, is compressing boss
The compression deformation and axial deformation difference generated under the pressing force that screw (2) applies is adapted, and the axial deformation difference is by different heat
Production when the axial stress-removal compressing structure (1) of the coefficient of expansion and camera lens mounting flange (3) cool to low-temperature working temperature from room temperature
It is raw.
The material of camera lens mounting flange (3) is aluminium alloy 5A06.
Axial stress-removal compressing structure (1), radial positioning column gland (4), radial positioning column (5), load-carrying construction (6) material
Material is titanium alloy TC 4.
Radial positioning column (5) cuts for cylinder and on the side of cylinder identical slot, by cutting on the side of cylinder
The mode of slot makes radial positioning column (5) axially have certain flexibility.
The invention has the following advantages over the prior art:
(1) present invention is pushed compared with the existing thermal stress structure type that disappears using flexible hinge form using room temperature
Tightly, it is non-can to take into account transport, transmitting etc. while disappearing thermal stress under realizing operating temperature for the structure type discharged under low temperature
Dynamic stiffness requirement when work.
(2) present invention is avoided and is being applied compared with the existing thermal stress structure type that disappears using flexible hinge form
When big temperature difference structure disappears thermal stress, require flexibility excessive flexible hinge, be difficult to design the flexible hinge met the requirements or
The problem of flexible hinge is reduced because of the excessive stability of flexibility, solves the low-temperature lens knot for working in profound hypothermia with the big temperature difference
Structure disappear thermal stress support problem；
(3) present invention is compared with the existing thermal stress structure type that disappears using flexible hinge form, and the present invention is using low
The axial deformation difference of structure is when temperature work come the thermal stress mode that disappears of pressing force when eliminating room temperature compression, rather than using reduces support
The flexible hinge of rigidity disappears thermal stress supporting way, can guarantee the stabilization of optical axis when low-temperature lens cool to low temperature from room temperature
Property, be conducive to improve pointing accuracy when low-temperature lens operation on orbit.
(4) present invention is compared with the existing thermal stress structure type that disappears using flexible hinge form, design structure form
Simply, universality is strong, optimized variable is few.
Detailed description of the invention
Fig. 1 is stress-removal support construction schematic diagram of the present invention；
Fig. 2 is the axial stress-removal compressing structure appearance schematic diagram of the present invention；
Fig. 3 is camera lens mounting flange appearance schematic diagram of the present invention；
Fig. 4 is radial positioning column appearance schematic diagram of the present invention；
Fig. 5 is radial positioning column gland appearance schematic diagram of the present invention；
Fig. 6 is main force support structure appearance schematic diagram of the present invention.
Specific embodiment
Release type is compressed the present invention relates to a kind of low-temperature lens to disappear thermal stress support construction form, is applied to optical remote sensing and is led
Domain works in the support of the low temperature aluminium camera lens of profound hypothermia.The support construction includes load-carrying construction, camera lens mounting flange, axially disappears and answer
Force locking structure, housing screw, radial positioning column, radial positioning column gland.The method have the characteristics that utilizing low temperature aluminium camera lens
The characteristics of room temperature adjustment, low-temperature working, using a kind of novel lens support construction form, which can be at normal temperature using big
Pretightning force realization be fixedly clamped to low-temperature lens, meet low-temperature lens transport and transmitting when dynamic stiffness requirement；In low temperature
When work, releasing for pressing force is realized using the modified difference that camera lens mounting flange and axial stress-removal compressing structure low-temperature shrink generate
It puts, to enable low temperature aluminium camera lens free shrink, eliminates thermal stress.The beneficial effects of the present invention are adopt compared to existing
Work is being realized using the structure type for compressing under room temperature, discharging under low temperature with the thermal stress structure type that disappears of flexible hinge form
While the thermal stress that disappears at a temperature of work, can take into account support has biggish dynamic rate, can be applied to work in profound hypothermia
Low-temperature lens disappear thermal stress support.
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
A kind of low-temperature lens compress release type and disappear thermal stress support construction, characterized by comprising: axial stress-removal compresses
Structure (1), housing screw (2), camera lens mounting flange (3), radial positioning column gland (4), radial positioning column (5), load-carrying construction
(6), as shown in Figure 1；
Axial stress-removal compressing structure (1), material is titanium alloy TC 4, there is one section of annulus of round ring boss, circle for inside
Multiple mounting holes are provided on ring；Boss is located at the side of annulus end face, is provided with two groups of rectangular straight slot, every group of rectangle in boss side surfaces
Through slot includes the multiple rectangular straight slot of a row, and two groups of rectangular straight slot are parallel and are staggered, as shown in Figure 2；
Through slot on the boss of axial stress-removal compressing structure (1) makes boss have certain flexibility, is compressing boss
The compression deformation and axial deformation difference generated under the pressing force that screw (2) applies is adapted, and the axial deformation difference is by different heat
Production when the axial stress-removal compressing structure (1) of the coefficient of expansion and camera lens mounting flange (3) cool to low-temperature working temperature from room temperature
It is raw.
Housing screw (2) is common hexagon socket cap head screw；
Camera lens mounting flange (3), material are aluminium alloy 5A06, the annular flange on the outside of lens barrel being supported for needs,
As shown in Figure 3；
Multiple notches are provided on the outside of camera lens mounting flange (3), multiple notches are uniformly distributed, and camera lens mounting flange (3) has
The side of notch is protruded into load-carrying construction (6), and the male cooperation with load-carrying construction (6)；
Radial positioning column (5), material are titanium alloy TC 4, cut for cylinder and on the side of cylinder identical slot, such as scheme
Shown in 4；
Radial positioning column (5) is radially oriented column gland (4) and is pressed in the notch of camera lens mounting flange (3), radial fixed
Circumference radial equipartition of the position column (5) in camera lens mounting flange (3).When cooling to low temperature, the diameter of camera lens mounting flange (3) from room temperature
When reducing to size, radial positioning column (5) can be withstood on always on camera lens mounting flange (3), and applies identical power, play radial direction
The function of positioning.
Radial positioning column gland (4), material are titanium alloy, and radial positioning column (5) is pressed on load-carrying construction by screw
(6) on side wall, as shown in Figure 5；
Load-carrying construction (6), material are titanium alloy TC 4, are hollow cylindrical structure, and inner wall has protrusion, and side wall has multiple groups peace
The through-hole of radial positioning column (5) and the mounting hole of radial positioning column gland (4) are filled, as shown in Figure 6；
Face is leaned in load-carrying construction (6), the installation for providing axial stress-removal compressing structure (1) and camera lens mounting flange (3),
Be fixed on low temperature aluminium camera lens can on load-carrying construction (6) by camera lens mounting flange (3).
Multiple groups installation radial positioning column (5) of the multiple notches and load-carrying construction (6) side wall of camera lens mounting flange (3) is led to
The mounting hole of hole and radial positioning column gland (4) is opposite；
The annulus of axial stress-removal compressing structure (1) is fixed on an end face of load-carrying construction (6) by housing screw (2)
On, the boss of axial stress-removal compressing structure (1) is bonded with the side of camera lens mounting flange (3), camera lens mounting flange (3) it is another
The male cooperation of side and load-carrying construction (6)；
The outer diameter of camera lens mounting flange (3) and the internal diameter of load-carrying construction (6) cooperate；
Axial stress-removal compressing structure (1) is fixed on load-carrying construction (6) by housing screw (2) with certain pretightning force；
Camera lens mounting flange (3) is pressed on load-carrying construction (6) by the pressing force that housing screw (2) generates simultaneously；
Multiple radial positioning columns (5) are protruded by the through-hole of multiple groups installation radial positioning column (5) of load-carrying construction (6) side wall
In load-carrying construction (6), and cooperate with multiple notches of camera lens mounting flange (3)；
Concrete operating principle, implementation steps, design matching relationship, effect and effect are as follows:
Load-carrying construction and axial stress-removal compressing structure material are titanium alloy TC 4, and camera lens mounting flange material is aluminium conjunction
Golden Al6061.At normal temperature in such a way that housing screw applies pressing force with stress-removal compressing structure by camera lens mounting flange pressure
It fastens on load-carrying construction, low-temperature lens support is made to meet dynamic stiffness requirement.
When dropping to low-temperature lens operating temperature 100K from room temperature 293K, because of thermal expansion coefficient between aluminium alloy and titanium alloy
It is poor to generate axial deformation between axial stress-removal compressing structure and camera lens mounting flange for difference.This programme is by axial stress-removal
The side grooving of compressing structure boss, is designed to elastic element, applies pressing force by housing screw, is equal to elastic deformation amount
The axial deformation that thermal expansion under operating temperature generates is poor.Low-temperature lens are when gradually cooling to low-temperature working temperature in this way, mirror
The pressing force on head mounting flange surface is gradually reduced, and the frictional force for being applied to its surface is also gradually reduced, and camera lens mounting flange exists
Free shrink will be realized under the limit of axial stress-removal compressing structure and radial positioning column, to realize unloading for thermal stress
It carries.Radial positioning column and radial positioning column gland are radially evenly distributed with for 3 groups, for the center in camera lens mounting flange radial heat distortion
Positioning.
Preferred embodiment is carried out by the following steps:
1) first according to the thermal expansion coefficient of selection material, calculate axial stress-removal compressing structure and camera lens mounting flange it
Between axial deformation it is poor.Calculation formula is as follows:
Δ 1=L1 × (Th-Tl)×(α1-α2)
In formula, Δ 1 is that axial deformation is poor；L1 is camera lens mounting flange thickness, is 10mm；ThFor room temperature adjustment temperature spot,
For 293K；TlIt is 100K for low-temperature working temperature spot；α1It is 18 × 10 for aluminium alloy Al6061 mean thermal expansion coefficients-6/K；α2
It is 8 × 10 for titanium alloy T c4 mean thermal expansion coefficients-6/K。
It is computed, the axial deformation difference Δ between axial stress-removal compressing structure and camera lens mounting flange is 1.93 × 10- 2mm。
2) analysis is calculated when axial stress-removal compressing structure generates 1 deflection of Δ, is applied on it by housing screw
Pressing force F, using finite element analysis software carry out statics Analysis be calculated.Analyzing result is preferably in axial stress-removal
When applying the pressing force of 8000N between compressing structure and camera lens mounting flange contact surface, 1.93 × 10 are generated-2The deflection of mm,
This deflection is generated by two groups of staggered rectangular straight slot of axial stress-removal compressing structure convex platform side, with this deflection
Matched preferred boss height is 8mm, and preferably the width of rectangular straight slot is 1.2mm, and the spacing between preferably two groups of through slots is
1.2mm, preferably each through slot are 4 ° to the angle of circle ring center.
This is designed so that applying the compression of 8000N between axial stress-removal compressing structure and camera lens mounting flange contact surface
When power, axial stress-removal compressing structure boss in the deflection and low-temperature working axially generated axial direction stress-removal compressing structure with
Axial deformation difference between camera lens mounting flange is equal, so that low-temperature lens are when gradually cooling to low-temperature working temperature,
The pressing force on camera lens mounting flange surface is gradually reduced, and the frictional force for being applied to its surface is also gradually reduced, camera lens mounting flange
Free shrink will be realized under the limit of axial stress-removal compressing structure and radial positioning column, to realize unloading for thermal stress
It carries.For the present invention compared with the existing thermal stress structure type that disappears using flexible hinge form, design structure form is simple, pervasive
Property is strong, optimized variable is few.And there is enough pressing forces at normal temperature, moving when can take into account the inoperatives such as transport, transmitting
Rigidity requirement.
3) it calculates when head of screw generates the pressing force of numerical value F to axial stress-removal compressing structure, is applied on each screw
The screw-down torque value added.Calculation formula is as follows:
T=K × (F/n) × d
In formula, T is screw-driving torque；K is to pre-tighten force coefficient, preferably according to surface lubrication situation between 0.1~0.3
It changes；F is total pressing force that screw applies on axial stress-removal compressing structure；N is the quantity of screw, is 4；D is that screw thread is public
Claim diameter, the design preferably uses the screw of M8, nominal diameter 8mm.It is computed T=4.8Nm, that is, uses torque spanner, presses
According to the moment values of above-mentioned calculating, defined screw-down torque is applied to screw, axial stress-removal structure and camera lens mounting flange are consolidated
Determine onto load-carrying construction.
4) it designs and determines radial positioning column crush and dimensional parameters.It is preferred that 100K work when, low-temperature lens radially along
Axle center, which generates, shrinks, rather than secundly, devises axial three groups of uniformly distributed camera lens radial positioning columns and radial positioning column pressure
Lid.It is as follows that low-temperature lens cool to the shrinkage difference calculation formula axially generated when preferred 100K:
Δ 2=L2 × (Th-Tl)×(α1-α2)
In formula, Δ 2 is that camera lens mounting flange radial contraction amount is poor, and L2 is rear lens mounting flange diameter, isThFor room temperature adjustment temperature spot, preferably 293K；TlFor low-temperature working temperature spot, preferably 100K；α1For aluminium conjunction
Golden Al6061 mean thermal expansion coefficients, preferably 18 × 10-6/K；α2For titanium alloy T c4 mean thermal expansion coefficients, preferably 8 ×
10-6/K。
It is computed 2=714 μm of Δ.The gap of unilateral generation is preferably 357 μm, and should design and compress deflection is preferably 357 μ
The radial positioning column of m.It is preferably 9.5mm with the matched radial positioning column diameter of this deflection, in fact it is highly preferred that be 15.8mm, in diameter
7 through slots are provided with to positioning column side, highly preferred through slot is 1.2mm, and spacing is preferably 0.8mm between through slot.Such as Fig. 4 institute
Show.Radial positioning column is circumferentially evenly distributed at 3 altogether, is passed through mounting hole at corresponding 3 on load-carrying construction respectively, is inserted into camera lens Method for Installation
At blue 3 in notch, it is highly 4mm that preferably gap width, which is 9.5mm,.Before unused radial positioning column gland compression, preferred diameter
It is higher by 357 μm of main force support structure surface to positioning column end face, flattens radial positioning finally by screw radial positioning column gland
Column.
By the radial positioning column that this is designed, radially apply identical power in camera lens mounting flange, when low-temperature lens are by room temperature
When cooling to low-temperature working temperature, during camera lens mounting flange radially generates shrinkage difference, radial positioning column exists always
Camera lens mounting flange radially applies identical power, to guarantee the stability of low-temperature lens optical axis.
It compresses release type using a kind of low-temperature lens of parameter designing in above-mentioned concrete case to disappear thermal stress support construction, warp
Analyzing fundamental frequency reaches 89Hz, and support stiffness meets dynamic stiffness requirement when ground transport, transmitting.It is tested through low-temperature lens image quality,
Camera lens wave aberration is 0.91 μm under room temperature, and camera lens wave aberration is 0.66 μm when low temperature 100K, and image quality increases under low temperature, does not have
Deterioration illustrates that low-temperature lens compress the release type thermal stress support construction that disappears and play the preferable effect for eliminating thermal stress.
Claims (8)
- The thermal stress support construction 1. a kind of low-temperature lens compression release type disappears, characterized by comprising: axial stress-removal compresses knot Structure (1), housing screw (2), camera lens mounting flange (3), radial positioning column gland (4), radial positioning column (5), load-carrying construction (6)；Axial stress-removal compressing structure (1), there is one section of annulus of round ring boss for inside, and boss is located at the one of annulus end face Side is provided with two groups of rectangular straight slot in boss side surfaces, and every group of rectangular straight slot includes the multiple rectangular straight slot of a row, and two groups of rectangular straight slot are flat It goes and is staggered；Multiple mounting holes are provided on annulus；Radial positioning column (5) cuts for cylinder and on the side of cylinder identical slot；Load-carrying construction (6) is hollow cylindrical structure, and inner wall has protrusion, and side wall has the through-hole of multiple groups installation radial positioning column (5) With the mounting hole of radial positioning column gland (4)；The side of camera lens mounting flange (3) is provided with multiple notches, and multiple notches are uniformly distributed, and camera lens mounting flange (3) is jagged Side protrude into load-carrying construction (6), and the male cooperation with load-carrying construction (6)；The through-hole of the multiple groups of multiple notches of camera lens mounting flange (3) and load-carrying construction (6) side wall installation radial positioning column (5) and The mounting hole of radial positioning column gland (4) is opposite；The annulus of axial stress-removal compressing structure (1) is fixed on an end face of load-carrying construction (6) by housing screw (2), The boss of axial stress-removal compressing structure (1) is bonded with the side of camera lens mounting flange (3), camera lens mounting flange (3) it is another The male cooperation of side and load-carrying construction (6)；The outer diameter of camera lens mounting flange (3) and the internal diameter of load-carrying construction (6) cooperate；Axial stress-removal compressing structure (1) is fixed on load-carrying construction (6) by housing screw (2) with certain pretightning force；Simultaneously Camera lens mounting flange (3) is pressed on load-carrying construction (6) by the pressing force that housing screw (2) generates；Camera lens mounting flange (3), the annular flange on the outside of lens barrel being supported for needs；Multiple radial positioning columns (5) protrude into load by the through-hole of multiple groups installation radial positioning column (5) of load-carrying construction (6) side wall In structure (6), and cooperate with multiple notches of camera lens mounting flange (3)；Radial positioning column (5) is pressed on the side wall of load-carrying construction (6) by radial positioning column gland (4) by screw；
- The thermal stress support construction 2. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: diameter To positioning column (5), it is radially oriented column gland (4) and is pressed in the notch of camera lens mounting flange (3), radial positioning column (5) exists The circumference radial equipartition of camera lens mounting flange (3).
- The thermal stress support construction 3. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: when Low temperature is cooled to from room temperature, when the radial dimension of camera lens mounting flange (3) reduces, radial positioning column (5) can withstand on camera lens always On mounting flange (3), and apply identical power, plays the function of radial positioning.
- The thermal stress support construction 4. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: hold Power structure (6), the installation for providing axial stress-removal compressing structure (1) and camera lens mounting flange (3) make low temperature aluminium mirror by face Head can be fixed on load-carrying construction (6) by camera lens mounting flange (3).
- The thermal stress support construction 5. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: axis Through slot on the boss of stress-removal compressing structure (1) makes boss have certain flexibility, applies boss in housing screw (2) Pressing force under the compression deformation that generates and axial deformation difference be adapted, the axial deformation difference by different heat expansion coefficient axis Generation when cooling to low-temperature working temperature from room temperature to stress-removal compressing structure (1) and camera lens mounting flange (3).
- The thermal stress support construction 6. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: mirror The material of head mounting flange (3) is aluminium alloy 5A06.
- The thermal stress support construction 7. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: axis It is titanium conjunction to the material of stress-removal compressing structure (1), radial positioning column gland (4), radial positioning column (5) and load-carrying construction (6) Golden TC4.
- The thermal stress support construction 8. a kind of low-temperature lens compression release type according to claim 1 disappears, it is characterised in that: diameter To positioning column (5), identical slot is cut for cylinder and on the side of cylinder, made by way of grooving on the side in cylinder Radial positioning column (5) axially has certain flexibility.
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| CN110967798B (en) * | 2019-09-30 | 2021-12-07 | 北京空间机电研究所 | Low-temperature infrared lens supporting device based on radial flexible unloading |
| CN113192994B (en) * | 2021-05-07 | 2023-03-24 | 豪威光电子科技（上海）有限公司 | Lens module and forming method thereof |
| CN115145095B (en) * | 2022-06-30 | 2023-07-18 | 中国科学院长春光学精密机械与物理研究所 | Unidirectional labyrinth type composite flexible structure |
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