CN114791663A - Heat dissipation and image stabilization lens of astronomical spectrometer camera based on liquid lens - Google Patents

Heat dissipation and image stabilization lens of astronomical spectrometer camera based on liquid lens Download PDF

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CN114791663A
CN114791663A CN202210439592.1A CN202210439592A CN114791663A CN 114791663 A CN114791663 A CN 114791663A CN 202210439592 A CN202210439592 A CN 202210439592A CN 114791663 A CN114791663 A CN 114791663A
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lens
fused silica
refractive index
index matching
calcium fluoride
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CN114791663B (en
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胡中文
汤丽峰
季杭馨
李世林
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Nanjing Institute of Astronomical Optics & Technology
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    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
    • G—PHYSICS
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Abstract

本发明公开了一种基于液体透镜的天文光谱仪相机的消热稳像镜头，包括熔融石英透镜和氟化钙透镜，熔融石英透镜和氟化钙透镜之间填充有折射率匹配液层，折射率匹配液层的前后表面分别与熔融石英透镜和氟化钙透镜直接接触，熔融石英透镜、折射率匹配液层和氟化钙透镜共同组成透镜三联体结构，当折射率匹配液前后表面的曲率相同时，折射率匹配液层用于消除透镜‑空气分界面的反射损失，当折射率匹配液前后表面的曲率不同时，折射率匹配液层相当于一个液体透镜。利用本发明的消热稳像镜头，可以实现在宽温度范围变化下，相机的成像像质保持稳定，可以解决天文光学望远镜在台址温差大的环境下进行观测时所导致的光谱仪谱线漂移的问题。

Figure 202210439592

The invention discloses a liquid lens-based astronomical spectrometer camera with heat dissipation and image stabilization lens, comprising a fused silica lens and a calcium fluoride lens, a refractive index matching liquid layer is filled between the fused silica lens and the calcium fluoride lens, and the refractive index The front and rear surfaces of the matching liquid layer are in direct contact with the fused silica lens and the calcium fluoride lens respectively. The fused silica lens, the refractive index matching liquid layer and the calcium fluoride lens together form a lens triplet structure. At the same time, the refractive index matching liquid layer is used to eliminate the reflection loss of the lens-air interface. When the curvatures of the front and rear surfaces of the refractive index matching liquid are different, the refractive index matching liquid layer is equivalent to a liquid lens. By using the adiabatic image stabilization lens of the present invention, the imaging quality of the camera can be kept stable under wide temperature range changes, and the spectral line drift of the spectrometer caused by the astronomical optical telescope during observation in the environment with large temperature difference at the site can be solved. The problem.

Figure 202210439592

Description

Heat dissipation and image stabilization lens of astronomical spectrometer camera based on liquid lens
Technical Field
The invention belongs to the technical field of astronomical optical instruments, and particularly relates to a heat-dissipation image-stabilizing lens of an imaging spectrometer camera for an astronomical optical telescope based on a liquid lens.
Background
Astronomy is a science promoted by telescopes, and the telescopes play an important role in promoting the development of astronomy. The astronomical telescope is a main tool for observing celestial bodies and capturing celestial body information, and a plurality of astronomical instruments are arranged at the rear end of the astronomical telescope and used for processing observation signals. The spectrometer is used as one of main terminal instruments of the optical telescope, decomposes the complex color light collected at the front end of the telescope into spectral lines and images on the image surface of the detector. A typical astronomical spectrometer system typically comprises an entrance slit, a collimating element, a dispersive element, a focusing element and a detector. The focusing element is a camera imaging system, which is divided into a transmission type camera and a reflection type camera, wherein the transmission type camera comprises a series of lenses, and the reflection type camera is composed of different reflectors.
With the design and construction of a new generation of larger-caliber telescopes, the number of medium and large astronomical observation spectrometers in optical wave bands in the world is continuously increased, the updating and upgrading time between new and old instruments is rapidly shortened, and the requirement on the fineness of optical imaging is higher and higher. The optical telescope is usually installed in high altitude areas, has thin atmosphere, good seeing, and many times in sunny night, and is suitable for observation. However, the environmental temperature difference of the high-altitude astronomical site is large, the temperature change is fast, the lens in the spectrometer camera can generate heat effect, the thermal expansion is generated, the imaging drift is caused, the imaging effect of the spectrometer is directly influenced, and therefore the camera lens for eliminating heat and stabilizing images is necessary.
For a transmission camera system, there are two methods that can effectively solve the problem of temperature drift of spectrometer imaging. Firstly, the focus position is kept through the compensation of positive and negative refractive indexes of a plurality of groups of cemented lenses, and the camera needs a large number of lenses and is long in lens barrel; secondly, a temperature control system is additionally arranged on the whole spectrometer, the drift of spectral lines is reduced through constant temperature control, but the temperature control system is complex in structure, so that the whole structure of the spectrometer occupies more and limited rear-end space of a telescope, therefore, the method has fewer telescopes, and is not suitable for the transformation of old instruments.
Disclosure of Invention
In order to overcome at least one defect in the prior art, the invention provides a heat-eliminating and image-stabilizing lens of an astronomical spectrometer camera based on a liquid lens.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a heat dissipation steady image camera lens of astronomical spectrometer camera based on liquid lens, includes fused quartz lens and calcium fluoride lens, it has refractive index matching liquid to fill between fused quartz lens and the calcium fluoride lens, forms refractive index matching liquid layer, the front and back surface of refractive index matching liquid layer respectively with fused quartz lens and calcium fluoride lens direct contact, fused quartz lens, refractive index matching liquid layer and calcium fluoride lens constitute the lens triplet structure jointly, and the camber of surface is the same around the refractive index matching liquid, the refractive index matching liquid layer is used for eliminating the reflection loss of lens-air interface, and the camber of surface is different around the refractive index matching liquid, the refractive index matching liquid layer is equivalent to a liquid lens.
Further, the refractive index matching fluid is Cargille LL5610 type laser fluid.
Further, the fused silica lens comprises a first fused silica lens and a second fused silica lens, the refractive index matching liquid layer comprises a first refractive index matching liquid layer and a second refractive index matching liquid layer, the calcium fluoride lens is clamped between the first fused silica lens and the second fused silica lens, the first refractive index matching liquid layer is filled between the first fused silica lens and the calcium fluoride lens, and the second refractive index matching liquid layer is filled between the second fused silica lens and the calcium fluoride lens.
Furthermore, the first fused quartz lens and the second fused quartz lens are separated through an inner cylindrical ring, the outer side of the lens triplet structure is clamped and limited through an outer cylindrical ring, isolation patches are arranged at the contact position of the fused quartz lens and the inner cylindrical ring and the contact position of the fused quartz lens and the outer cylindrical ring, the inner cylindrical ring is indirectly contacted with the fused quartz lens through the isolation patches and applies axial force, and the outer cylindrical ring is indirectly contacted with the fused quartz lens through the isolation patches and applies axial force.
Further, the inner cylindrical ring is an aluminum cylindrical ring, the outer cylindrical ring is a titanium cylindrical ring, and the isolation patch is a polyimide patch.
Furthermore, an outer sealing ring is arranged between the outer cylindrical ring and the fused silica lens, an inner sealing ring is arranged at the junction of the calcium fluoride lens and the inner cylindrical ring, a through hole for flowing the refractive index matching fluid is formed in the side wall of the inner cylindrical ring, the outer sealing ring is used for sealing the refractive index matching fluid and providing radial force for the fused silica lens, and the calcium fluoride lens is restrained by the inner cylindrical ring and the inner sealing ring.
Further, the outer sealing ring is a Parker 2-361 type O-shaped sealing ring, and the inner sealing ring is a Parker 2-159 type O-shaped sealing ring.
Further, the volume of the heat dissipation and image stabilization lens has heat dissipation requirements:
Figure BDA0003613201570000021
wherein, is Δ V Ti ，ΔV Al ，ΔV CaF2 ，ΔV Silica And Δ V O-ring The volume changes corresponding to titanium, aluminum, calcium fluoride, fused quartz and all sealing rings are substituted into the thermal expansion coefficient, and then the following results are obtained:
Figure BDA0003613201570000022
wherein, V Ti ，V Al ，V CaF2 ，V Silica And V O-ring Respectively the volumes corresponding to titanium, aluminum, calcium fluoride, fused quartz and all sealing rings, alpha Ti ，α Al ，α CaF2 And alpha Silica The linear thermal expansion coefficients, beta, corresponding to titanium, aluminum, calcium fluoride and fused silica respectively O-ring Is the volume thermal expansion coefficient of the seal ring.
Compared with the prior art, the invention has the beneficial effects that:
the heat-eliminating and image-stabilizing lens of the astronomical spectrometer camera based on the liquid lens can keep the imaging quality of the camera stable under the condition of wide temperature range change, and can solve the problem of spectrometer spectral line drift caused by observation of an astronomical optical telescope in an environment with large temperature difference of a station.
Drawings
FIG. 1 is a schematic structural diagram of a thermal extinction and image stabilization lens;
FIG. 2 is a schematic diagram of the optical path of the spectrometer camera optical system with a thermal extinction and image stabilization lens;
FIG. 3 is a schematic diagram showing the variation of the refractive index matching fluid with temperature in the image stabilizing lens;
FIG. 4 is a schematic diagram of the image quality of the spectrometer camera with the image-stabilizing lens for thermal extinction and imaging at different temperatures;
the labels in the figure are: 1. a heat-eliminating image-stabilizing lens; 101. a first fused silica lens; 102. a second fused silica lens; 2. a calcium fluoride lens; 301. a first index matching liquid layer; 302. a second index matching liquid layer; 4. an inner cylindrical ring; 401. a through hole; 5. isolating the patch; 6. an outer cylindrical ring; 7. an outer seal ring; 8. an inner seal ring; 9. a third fused quartz lens; 10. a fourth fused silica lens; 11. a CCD.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment provides the heat dissipation image stabilization lens which can keep the imaging quality of a camera stable under the condition of wide temperature range change and can solve the problem of spectral line drift of a spectrometer caused by observation of an astronomical optical telescope in an environment with large temperature difference of a station. Optically, the refractive index of Fused Silica (Fused Silica) increases with increasing temperature, calcium fluoride (CaF) 2 ) The Refractive Index of the Refractive Index Matching Fluid (RIMF) decreases with the increase of temperature, but the Refractive Index of the Refractive Index Matching Fluid (RIMF) changes relatively quickly with the increase of temperature. Optimization of each by optical design simulationThe curvature and thickness of the lens, and the phase change of the fused silica and calcium fluoride lens caused by the thermal effect can be compensated by the refractive index matching fluid, so that the optical heat dissipation is realized. Mechanically, the thermal expansion of fused silica, calcium fluoride, refractive index matching liquid and lens interlayer material inside the lens is matched with the thermal expansion of lens external lens vector material, so as to realize the heat dissipation on the mechanical structure. The purpose of stabilizing the image of the spectrograph camera is finally achieved through optical and mechanical heat dissipation.
The heat dissipation image stabilization lens of the astronomical spectrometer camera based on the liquid lens comprises a fused quartz lens and a calcium fluoride lens, a thin layer of refractive index matching liquid is filled between the fused quartz lens and the calcium fluoride lens to form a refractive index matching liquid layer, the front surface and the rear surface of the refractive index matching liquid layer are in direct contact with the fused quartz lens and the calcium fluoride lens respectively, the shape and the curvature of the front surface and the rear surface of the refractive index matching liquid are consistent with the contact lens surface, and the fused quartz lens, the refractive index matching liquid layer and the calcium fluoride lens jointly form a lens triplet structure. When the curvatures of the front and rear surfaces of the refractive index matching fluid are the same, the refractive index matching fluid mainly plays a role in eliminating reflection loss of a lens-air interface; when the curvatures of the front and rear surfaces of the index matching fluid are different, the index matching fluid layer can be regarded as a lens and thus is called a liquid lens. Specifically, as shown in fig. 1, the fused silica lens in the present embodiment is provided with 2 pieces, that is, a first fused silica lens 101 and a second fused silica lens 102, and a calcium fluoride lens 2 is interposed between the first fused silica lens 101 and the second fused silica lens 102, and accordingly, two layers of refractive index matching liquid are shared in the entire lens group, that is, a first refractive index matching liquid layer 301 is filled between the first fused silica lens 101 and the calcium fluoride lens 2, and a second refractive index matching liquid layer 302 is filled between the second fused silica lens 102 and the calcium fluoride lens 2. An index matching fluid is typically used between multiple optical devices or on one or more external surfaces of a single optical device to improve the optical performance of the interface with air, the index of refraction of the index matching fluid being close to the index of refraction of the optical device itself for optimal optical performance improvement, the index matching fluid being a blend of two or more different materialsThe thickness of the layer is typically in the millimeter to micron range, and a Laser Liquid of type Cargille LL5610 (Laser Liquid) is preferred as the refractive index matching Liquid in this embodiment; the present embodiment prefers the center thickness h of the first fused silica lens 101 Silica-1 Is 16 mm; center thickness h of the second fused silica lens 102 Silica-2 Is 18 mm; center thickness h of calcium fluoride lens CaF2 Is 46 mm; center thickness d of each layer of laser liquid LaserLiquid Is 0.065 mm.
In order to make the fused silica lens, the refractive index matching liquid layer and the calcium fluoride lens efficiently constitute the above lens triplet structure, the present embodiment is further provided with an inner cylindrical ring 4 and an outer cylindrical ring 6. Specifically, as shown in fig. 1, the first fused quartz lens 101 and the second fused quartz lens 102 are separated by the inner cylindrical ring 4, the outer side of the lens triplet structure is clamped and limited by the outer cylindrical ring 6, the contact position of the fused quartz lens and the inner cylindrical ring 4 and the contact position of the fused quartz lens and the outer cylindrical ring 6 are both provided with the isolation patches 5, the inner cylindrical ring 4 indirectly contacts with the fused quartz lens through the isolation patches 5 and applies an axial force, and the outer cylindrical ring 6 indirectly contacts with the fused quartz lens through the isolation patches 5 and applies an axial force. In this embodiment, an aluminum (Al) cylindrical ring is preferably used as the inner cylindrical ring 4 as the lens inner lens vector material, a Polyimide (PI) patch is preferably used as the isolation patch 5, and a titanium (Ti) cylindrical ring is preferably used as the lens outer lens vector material as the outer cylindrical ring 6. The preferred inner diameter of the aluminum cylindrical ring of this embodiment is phi Al_in Is 136mm and has an outer diameter phi Al_out 155mm, inner diameter phi of the titanium cylindrical ring Ti_in 155mm, outer diameter phi Ti_out 163.7 mm.
In this embodiment, the refractive index matching fluid is sealed by using the outer seal ring 7 and the inner seal ring 8. Specifically, as shown in fig. 1, the outer sealing ring 7 is disposed between the outer cylindrical ring 6 and the fused silica lens, the outer sealing ring 7 is used for sealing the refractive index matching fluid and providing a radial force to the fused silica lens, the inner sealing ring 8 is disposed at a junction of the calcium fluoride lens 2 and the inner cylindrical ring 4, the calcium fluoride lens 2 is constrained by the inner cylindrical ring 4 and the inner sealing ring 8, and a through hole 401 for flowing the refractive index matching fluid when the lens expands with heat and contracts with cold is disposed on a side wall of the inner cylindrical ring 4. In the present embodiment, a Parker type 2-361O-ring is preferably used as the outer sealing ring 7, and the cross-sectional diameter thereof is 5.33mm, and a Parker type 2-159O-ring is preferably used as the inner sealing ring 8, and the cross-sectional diameter thereof is 2.62 mm.
In order to realize the optical heat dissipation of the athermal image stabilization lens, the camera optical system of the athermal image stabilization lens of the embodiment is simulated by Zemax software, which comprises the athermal image stabilization lens 1 of the astronomical spectrograph camera based on the liquid lens, the third fused quartz lens 9, the fourth fused quartz lens 10 and the CCD11, and the optical path of the athermal image stabilization lens is shown in fig. 2. Parallel light beams with the diameter of 100mm enter the athermalization image stabilization lens 1, pass through the third fused quartz lens 9 and the fourth fused quartz lens 10, and are imaged on a target surface of the CCD 11. The refractive index of fused silica on two sides of the athermal image stabilization lens is increased along with the temperature rise, the refractive index of calcium fluoride is reduced along with the temperature rise, but the refractive index of the fused silica and the refractive index of the calcium fluoride are changed slowly along with the temperature, the refractive index of the laser liquid is changed relatively quickly along with the temperature, and the refractive index of the Cargille LL5610 type laser liquid is changed along with the temperature as shown in figure 3. By optimizing the curvature and the thickness of each lens, the phase change of the fused quartz and the calcium fluoride lens caused by the thermal effect is compensated by the laser liquid, the camera keeps excellent image quality in a large-range working temperature range of-10-30 ℃, and the root mean square value of the radius of an imaging spot of each view field on the target surface of the CCD11 is shown in figure 4. After optimization, the specific parameters of each element of the liquid lens are shown in Table 1, and the height h of the titanium cylindrical ring Ti For the purpose of calculation, the heat dissipation is calculated through the volume.
Table 1 liquid lens element specific parameters, units: mm.
Figure BDA0003613201570000051
Figure BDA0003613201570000061
In order to realize the heat dissipation of the liquid lens camera on a mechanical structure, the total volume thermal expansion of quartz, calcium fluoride, interlayer material aluminum, laser liquid and an O-shaped ring in the lens is matched with the thermal expansion of external lens vector material titanium. When calculating the volume heat dissipation, the volume of the interlayer material aluminum in the lens is the actual volume of the inner cylindrical ring 4, and when calculating the volume of the outer lens vector material titanium, the titanium is regarded as the actual volume of the cylinder instead of the outer cylindrical ring 6. The laser liquid in the embodiment can flow when thermal expansion occurs inside the lens through the through hole on the wall of the aluminum cylindrical ring, so that the volume thermal expansion of the laser liquid does not act on the external mirror vector. The volume heat dissipation of the heat dissipation image stabilization lens needs to satisfy:
Figure BDA0003613201570000062
wherein, is Δ V Ti ，ΔV Al ，ΔV CaF2 ，ΔV Silica And Δ V O-ring The volume changes corresponding to titanium, aluminum, calcium fluoride, fused quartz and all sealing rings are substituted into the thermal expansion coefficient, and then the following results are obtained:
Figure BDA0003613201570000063
wherein, V Ti ，V Al ，V CaF2 ，V Silica And V O-ring Respectively the volumes corresponding to titanium, aluminum, calcium fluoride, fused quartz and all sealing rings, alpha Ti ，α Al ，α CaF2 And alpha Silica The linear thermal expansion coefficients, beta, corresponding to titanium, aluminum, calcium fluoride and fused silica respectively O-ring Is the volume thermal expansion coefficient of the seal ring.
According to specific parameters of each element of the liquid lens in the table 1, the height h of the external sagittal titanium is calculated Ti ＝57.2mm。
In summary, in the present embodiment, the heat-removal image-stabilization lens of the astronomical spectrometer camera based on the liquid lens compensates phase change of the lens due to temperature through the refractive index matching fluid, so as to achieve optical heat removal. The volume thermal expansion of the internal elements of the lens is matched with the volume thermal expansion of the external lens vector of the lens, so that the heat dissipation on the mechanical structure is realized. The camera lens is athermalized optically and mechanically, so that the imaging quality of the camera can be kept stable under wide temperature range change.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1.一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，包括熔融石英透镜和氟化钙透镜，所述熔融石英透镜和氟化钙透镜之间填充有折射率匹配液，形成折射率匹配液层，所述折射率匹配液层的前后表面分别与熔融石英透镜和氟化钙透镜直接接触，所述熔融石英透镜、折射率匹配液层和氟化钙透镜共同组成透镜三联体结构，当折射率匹配液前后表面的曲率相同时，所述折射率匹配液层用于消除透镜-空气分界面的反射损失，当折射率匹配液前后表面的曲率不同时，所述折射率匹配液层相当于一个液体透镜。1. a kind of heat dissipation and image stabilization lens based on the astronomical spectrometer camera of liquid lens, it is characterized in that, comprise fused silica lens and calcium fluoride lens, be filled with refractive index matching liquid between described fused silica lens and calcium fluoride lens , form a refractive index matching liquid layer, the front and rear surfaces of the refractive index matching liquid layer are in direct contact with the fused silica lens and the calcium fluoride lens respectively, and the fused silica lens, the refractive index matching liquid layer and the calcium fluoride lens together form a lens Triplet structure, when the curvature of the front and rear surfaces of the refractive index matching liquid is the same, the refractive index matching liquid layer is used to eliminate the reflection loss of the lens-air interface. When the curvatures of the front and rear surfaces of the refractive index matching liquid are different, the refractive index matching liquid layer The rate matching liquid layer is equivalent to a liquid lens. 2.根据权利要求1所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述折射率匹配液为Cargille LL5610型激光液。2 . The adiabatic image stabilization lens for an astronomical spectrometer camera based on a liquid lens according to claim 1 , wherein the refractive index matching liquid is a Cargille LL5610 laser liquid. 3 . 3.根据权利要求1或2所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述熔融石英透镜包括第一熔融石英透镜和第二熔融石英透镜，所述折射率匹配液层包括第一折射率匹配液层和第二折射率匹配液层，所述氟化钙透镜夹设于所述第一熔融石英透镜和第二熔融石英透镜之间，所述第一熔融石英透镜与氟化钙透镜之间填充有所述第一折射率匹配液层，所述第二熔融石英透镜与氟化钙透镜之间填充有所述第二折射率匹配液层。3. The adiabatic image stabilization lens for an astronomical spectrometer camera based on a liquid lens according to claim 1 or 2, wherein the fused silica lens comprises a first fused silica lens and a second fused silica lens, and the The refractive index matching liquid layer includes a first refractive index matching liquid layer and a second refractive index matching liquid layer, the calcium fluoride lens is sandwiched between the first fused silica lens and the second fused silica lens, and the calcium fluoride lens is sandwiched between the first fused silica lens and the second fused silica lens. The first refractive index matching liquid layer is filled between the first fused silica lens and the calcium fluoride lens, and the second refractive index matching liquid layer is filled between the second fused silica lens and the calcium fluoride lens. 4.根据权利要求3所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述第一熔融石英透镜和第二熔融石英透镜通过内圆柱环间隔开，所述透镜三联体结构的外侧通过外圆柱环夹紧限位，所述熔融石英透镜与内圆柱环的接触位置以及所述熔融石英透镜与外圆柱环的接触位置均设置有隔离贴片，所述内圆柱环通过隔离贴片与熔融石英透镜间接接触并施加轴向力，所述外圆柱环通过隔离贴片与熔融石英透镜间接接触并施加轴向力。4. The adiabatic image stabilization lens of a liquid lens-based astronomical spectrometer camera according to claim 3, wherein the first fused silica lens and the second fused silica lens are spaced apart by an inner cylindrical ring, so that the The outer side of the lens triplet structure is clamped and limited by the outer cylindrical ring, and the contact position of the fused silica lens and the inner cylindrical ring and the contact position of the fused silica lens and the outer cylindrical ring are provided with isolation patches. The inner cylindrical ring indirectly contacts the fused silica lens through the isolation patch and applies axial force, and the outer cylindrical ring indirectly contacts the fused silica lens through the isolation patch and applies axial force. 5.根据权利要求4所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述内圆柱环为铝圆柱环，所述外圆柱环为钛圆柱环，所述隔离贴片为聚酰亚胺贴片。5. The adiabatic image stabilization lens of a liquid lens-based astronomical spectrometer camera according to claim 4, wherein the inner cylindrical ring is an aluminum cylindrical ring, the outer cylindrical ring is a titanium cylindrical ring, and the The isolation patch is a polyimide patch. 6.根据权利要求4所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述外圆柱环与熔融石英透镜之间设置有外密封圈，所述氟化钙透镜与内圆柱环的交界处设置有内密封圈，所述内圆柱环的侧壁上设置有用于折射率匹配液流动的通孔，所述外密封圈用于密封折射率匹配液并对熔融石英透镜提供径向力，所述氟化钙透镜由内圆柱环和内密封圈进行约束。6 . The adiabatic image stabilization lens for an astronomical spectrometer camera based on a liquid lens according to claim 4 , wherein an outer sealing ring is arranged between the outer cylindrical ring and the fused silica lens, and the fluorinated The junction of the calcium lens and the inner cylindrical ring is provided with an inner sealing ring, the side wall of the inner cylindrical ring is provided with a through hole for the flow of the refractive index matching liquid, and the outer sealing ring is used to seal the refractive index matching liquid and The radial force is provided by a fused silica lens, which is restrained by an inner cylindrical ring and an inner sealing ring. 7.根据权利要求6所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述外密封圈为Parker 2-361型O型密封圈，所述内密封圈为Parker 2-159型O型密封圈。7. The adiabatic image stabilization lens of a liquid lens-based astronomical spectrometer camera according to claim 6, wherein the outer sealing ring is a Parker 2-361 type O-ring, and the inner sealing ring For Parker Type 2-159 O-rings. 8.根据权利要求1所述的一种基于液体透镜的天文光谱仪相机的消热稳像镜头，其特征在于，所述消热稳像镜头的体积消热满足：8. The heat-dissipating image stabilization lens of a liquid lens-based astronomical spectrometer camera according to claim 1, wherein the volume heat dissipation of the heat-dissipating image stabilization lens satisfies:
Figure FDA0003613201560000011
Figure FDA0003613201560000011
 其中，ΔVTi，ΔVAl，ΔVCaF2，ΔVSilica和ΔVO-ring分别为钛、铝、氟化钙、熔融石英和全部密封圈对应的体积变化，代入热膨胀系数，则得到：Among them, ΔV Ti , ΔV Al , ΔV CaF2 , ΔV Silica and ΔV O-ring are the volume changes corresponding to titanium, aluminum, calcium fluoride, fused silica and all sealing rings, respectively.
Figure FDA0003613201560000021
Figure FDA0003613201560000021
 其中，VTi，VAl，VCaF2，VSilica和VO-ring分别为钛、铝、氟化钙、熔融石英和全部密封圈对应的体积，αTi，αAl，αCaF2和αSilica分别为钛、铝、氟化钙和熔融石英对应的线热膨胀系数，βO-ring为密封圈的体积热膨胀系数。Among them, V Ti , V Al , V CaF2 , V Silica and V O-ring are the corresponding volumes of titanium, aluminum, calcium fluoride, fused silica and all sealing rings, respectively, α Ti , α Al , α CaF2 and α Silica are respectively is the linear thermal expansion coefficient corresponding to titanium, aluminum, calcium fluoride and fused silica, and β O-ring is the volume thermal expansion coefficient of the sealing ring.
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US5345337A (en) * 1993-01-28 1994-09-06 Lockheed Missiles & Space Company, Inc. Viscous supercooled liquid lens elements having abnormal dispersion
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CN107272213A (en) * 2017-07-25 2017-10-20 中国科学院西安光学精密机械研究所 A laser beam homogenization and beam expansion shaping device

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