CN121274903A - A support device and support control method for detecting the surface shape of a large lens. - Google Patents
A support device and support control method for detecting the surface shape of a large lens.Info
- Publication number
- CN121274903A CN121274903A CN202511834091.3A CN202511834091A CN121274903A CN 121274903 A CN121274903 A CN 121274903A CN 202511834091 A CN202511834091 A CN 202511834091A CN 121274903 A CN121274903 A CN 121274903A
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- lens
- air
- surface shape
- base
- stop block
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Abstract
The invention relates to the technical field of large lens surface shape detection, in particular to a supporting device and a supporting control method for large lens surface shape detection. The supporting device for detecting the surface shape of the large lens comprises an inner side stop block, a base, an air floating device, a side fixing device, a stepped annular groove, an air floating device, a plurality of flexible inner side stop blocks, a plurality of inner side stop block limiting air floating devices, a lens to be detected, a plurality of side fixing devices and a fixing shaft, wherein the stepped annular groove is formed in the top of the base, the air floating device of an annular air charging structure is arranged in the outer annular groove, the inner side stop blocks are arranged in inner side stop block mounting holes formed in an inner annular step, the inner side stop blocks are located in the inner ring of the air floating device so that the lens to be detected can be limited by the air floating device, the top surface of the air floating device is filled with air, and the side fixing devices are uniformly fixed on the side wall of the base and used for clamping and fixing the lens to be detected on the basis of the fixing shafts with radial adjusting functions on the side fixing devices. The invention can effectively eliminate the influence of the detection of the lens surface shape to be detected, which is caused by the processing error of the detection tool or the deformation of the external force.
Description
Technical Field
The invention relates to the technical field of large lens surface shape detection, in particular to a supporting device and a supporting control method for large lens surface shape detection.
Background
With the development of technology, the surface accuracy of an optical lens is a key variable determining the performance of a device. Wherein, the surface shape detection difficulty of the convex lens is far higher than that of the plane lens or the concave lens.
In the prior art, a plane lens or a concave lens is commonly used for detecting the surface shape by an interferometer;
However, the problem that even if the detection lenses with different curvatures are configured, the actual detection will often have the situation of incomplete detection of the edge of the convex lens, and the situation of the convex lens with larger diameter is more serious.
In addition, in the prior art, a spectral confocal method or a multi-wavelength interferometry is commonly used for detecting the surface shape of the convex lens, the convex lens is commonly placed on a rotary table under a detection probe, the detection probe can swing, the convex lens can rotate, and the surface shape of the surface of the convex lens is obtained by collecting data and processing the data through a system. The detection mode is easily influenced by factors such as the machining precision of the supporting surface of the convex lens supporting tool and the deformation of the tool, and the uneven contact surface of the tool and the turntable can cause the inaccuracy of the final detection result. For this reason, the prior art has improved the accuracy of detecting the surface shape from the point of view of the uniformity and balance of the forces applied to the lens to be detected during the detection process, such as the chinese patent with publication No. CN109798840a, entitled detection device for detecting the surface shape of the lens in a splice interferometer, and the chinese patent with publication No. CN101887160B, entitled support system for large-caliber space optical mirror processing, but both of the above techniques are discrete point contacts in nature. Between the support points, the lens to be tested is in a suspended state, and the self weight of the lens still can cause microscopic deformation. The more support points, the more complex the coupling adjustment. And the conventional multipoint support requires repeated adjustment of tens or even hundreds of supports.
Based on this, a need exists for further improvements to existing equipment to ameliorate the above-mentioned technical problems.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, and thus to provide a supporting device and a supporting control method for detecting the surface shape of a large lens.
The supporting device for detecting the surface shape of the large lens comprises an inner side stop block, a base, an air floatation device and a side fixing device;
The top of the base is provided with a stepped annular groove;
the air floatation device of the annular inflatable structure is arranged in the outer annular groove;
The plurality of flexible inner side check blocks are arranged in inner side check block mounting holes formed in the inner ring steps so as to enable the plurality of inner side check blocks positioned in the inner ring of the air floatation device to limit the air floatation device;
the plurality of side fixing devices are uniformly fixed on the side wall of the base, and the lens to be measured is clamped and fixed based on the fixing shafts with radial adjusting functions on the plurality of side fixing devices.
Preferably, the air floatation device comprises an annular air charging pipe and an air charging valve;
The side wall of the annular inflation tube is connected with the output end of the inflation valve;
The other end of the inflation valve is arranged in a valve mounting groove formed in the base.
Preferably, the base is further provided with a central through hole.
Preferably, the height of the inner side stop block is larger than the bottom surface height of the lowest inflation amount of the air floatation device, so that the limit of the inner side stop block to the air floatation device is ensured.
Preferably, the height of the side fixing means is lower than the height of the lens to be measured after it has been mounted on a support means for large lens profile detection.
The supporting control method for detecting the surface shape of the large lens is realized by applying a supporting device for detecting the surface shape of the large lens and specifically comprises the following steps:
S1, sequentially assembling a base, an inner side stop block and an uninflated air floatation device;
S2, assembling the lens to be tested, wherein the air floatation device is not inflated and is contracted in the outer ring groove, so that the lens to be tested is arranged on the inner side stop block;
S3, assembling the side fixing device on the base, and adjusting the fixing shafts until the central shaft of the lens to be detected is overlapped with the central shaft of the air floatation device, so that the plurality of fixing shafts are matched with the limiting lens to be detected;
S4, performing inflation operation on the air floatation device according to actual requirements so as to enable the lens to be tested to leave the inner side stop block;
S5, stopping inflating;
S6, adjusting the fixed shafts so that a plurality of fixed shafts cooperate to clamp the lens to be tested;
s7, moving the whole device completely assembled in the step S6 to detection equipment, and detecting the surface shape of the lens to be detected.
The technical scheme of the invention has the following advantages:
The supporting device and the supporting control method for detecting the surface shape of the large lens have the advantages that the device is simple in integral structure and convenient to operate, the main supporting for detecting the lens to be detected is finished through the air floatation device, and the influence on the surface shape detection of the lens to be detected, which is caused by the machining error of a detection tool or the deformation of an external force, can be effectively eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
fig. 2 is a schematic diagram of the positional relationship in the surface shape detection in embodiment 2.
Reference numerals illustrate:
1-lens to be measured, 2-internal side stop block, 3-air floating device, 4-base, 5-side fixing device and 6-inflation valve.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment of FIG. 1 discloses a supporting device for detecting the surface shape of a large lens, which comprises an inner side stop block 2, a base 4, an air floatation device 3 and a side fixing device 5;
the top of the base 4 is provided with a stepped annular groove;
The air floatation device 3 of the annular inflatable structure is arranged in the outer ring groove;
the plurality of flexible inner side baffle blocks 2 are arranged in inner side baffle block mounting holes formed in the inner ring steps so that the plurality of inner side baffle blocks 2 positioned in the inner ring of the air flotation device 3 limit the air flotation device 3;
The plurality of side fixing devices 5 are uniformly fixed on the side wall of the base 4, and the lens 1 to be measured is clamped and fixed based on the fixed shafts with radial adjusting functions on the plurality of side fixing devices 5.
Specifically:
Unlike the prior art that only a plurality of flexible internal side stoppers 2 are generally selected for balancing through uniform distribution, the air flotation device 3 adopting the annular inflatable structure in the embodiment replaces the traditional side stoppers, so that the complicated assembly process of each assembly correction is simplified when the traditional side stoppers are used, only the input air pressure is required to be controlled, the replicability is realized, and the surface shape detection is more adapted than the traditional non-replicability.
It should be noted that, if only the air floating device 3 is used for replacement, the boundary effect and the surface shape deformation risk will be caused during use, and the influence of the external factors such as noise and motor will generate the influence of low-frequency vibration on dynamic stability, for this embodiment, the stepped annular groove is formed on the base, and the air floating device 3 is limited by adopting the matching of the inner side stop block 2 and the groove wall of the outer ring groove, so that the risk is reduced and the dynamic stability is improved. It should be noted that, the ring width of the outer ring groove for installing the air floating device 3 is set according to actual requirements, and the optimal modes for different requirements can be obtained through experiments, which are not repeated. In practical application, the depth of each step in the stepped annular groove is adjusted according to the lens to be detected.
The further air floatation device 3 comprises an annular air charging pipe and an air charging valve 6;
The side wall of the annular inflation tube is connected with the output end of the inflation valve 6;
the other end of the air charging valve 6 is arranged in a valve mounting groove formed on the base 4. The annular inflation tube comprises, but is not limited to, an air bag, an air tube, a silica gel hose or other devices capable of realizing an annular inflation structure in practical application.
In this embodiment, in order to improve the defects existing in the existing detection of the surface shape of the convex large lens, in order to avoid surface scratch caused by structural interference of the convex surface of the lens 1 to be tested, the base 4 is further provided with a central through hole, and the size of the central through hole is adjusted according to the outer diameter size of the lens 1 to be tested in practical application.
It should be noted that, during practical application, the height of the inner side stop block 2 is greater than the bottom surface height of the air floating device 3 with the lowest inflation amount, so as to ensure the limit of the inner side stop block 2 to the air floating device 3, during surface shape detection application, the lens 1 to be detected and the inner side stop block 2 should not contact, and during practical application, the height of the inner side stop block 2 can be changed according to the thickness of the lens 1 to be detected. The inner side stop block 2 which is different from the traditional mode adopts flexible materials such as polytetrafluoroethylene and the like, avoids scratching the lens and can finish supporting the lens 1 to be tested.
The side fixing means 5 has a lower height than the lens 1 to be measured after it has been mounted on a support means for large lens profile detection. In practical application, the number of the side fixing devices 5 is at least 3, and the number of the side fixing devices 5 is increased or decreased according to the outline dimension of the lens 1 to be tested.
Example 2
The embodiment further discloses a support control method for detecting the surface shape of the large lens on the basis of the embodiment 1, and the support device for detecting the surface shape of the large lens in the embodiment 1 is applied and comprises the following specific steps:
s1, sequentially assembling a base 4, an inner side stop block 2 and an uninflated air floatation device 3;
S2, assembling the lens 1 to be tested, wherein the air floatation device 3 is not inflated and is contracted in the outer ring groove, so that the lens 1 to be tested is arranged on the inner side stop block 2, and the inner side stop block 2 is used for bearing the weight of the lens 1 to be tested when the air floatation device 3 is not inflated.
S3, assembling the side fixing device 5 onto the base 4, and adjusting the fixing shafts until the central shaft of the lens 1 to be detected is overlapped with the central shaft of the air floatation device 3, so that a plurality of fixing shafts are matched with the limiting lens 1 to be detected;
S4, performing inflation operation on the air floatation device 3 according to actual requirements so as to enable the lens 1 to be tested to leave the inner side stop block 2, wherein the stress of the lens 1 to be tested is uniform at the moment, and surface shape errors caused by uneven stress due to rigid support are avoided;
S5, stopping inflation, and disconnecting the inflation valve 6 from the inflation equipment, wherein a supporting device for detecting the surface shape of the large lens is an independent complete device;
s6, adjusting the fixed shafts so that a plurality of fixed shafts cooperate to clamp the lens 1 to be tested;
s7, moving the whole device completely assembled in the step S6 to detection equipment, and detecting the surface shape of the lens to be detected.
Specifically:
Parts are machined according to the structure, wherein the lower surface of the base 4 needs to be placed on the rotating table surface of the detection equipment, the upper surface of the inner ring step and the upper surface of the outer ring groove need to be provided with an inner side stop block 2 and a bearing air floatation device 3, and therefore the roughness and the flatness of the surfaces need to be controlled.
The inner side block 2 is mounted on the base 4 for supporting the lens 1 to be tested when the air floating device 3 is not inflated, and in order to make the force for supporting the lens 1 to be tested uniform as much as possible, the height of the inner side block 2 is strictly controlled during processing, and the heights are equal as much as possible.
The lens 1 to be measured is placed on the inner side stopper 2, and at this time, the lens 1 to be measured is supported by the inner side stopper 2.
The fixing shaft of the side fixing device 5 is adjusted to enable the jackscrew to be close to the lens 1 to be tested, and the lens 1 to be tested is prevented from being deviated when the lens is inflated. Specifically, a jackscrew is adopted as a fixed shaft;
The inflation valve 6 is connected with inflation equipment, inflation pressure is controlled through the barometer and the pressure regulating valve, the air flotation device 3 is inflated, the weight of the lens 1 to be measured is borne, the lens 1 to be measured is separated from the inner side stop block 2, the lens 1 to be measured is supported by the air flotation device 3 at the moment, and the influence of supporting tools is effectively eliminated due to the fact that the property of the air flotation device is uniform in stress on each point of the air flotation device 3.
Closing the air charging valve.
The radial adjusting structural jackscrew on the side fixing device 5 is adjusted, so that the lens 1 to be measured has no lateral external force and cannot laterally displace.
The whole device is moved to a testing device, as shown in fig. 2, to complete the surface shape detection, wherein the testing device is a device for detecting the surface shape.
The method provided by the embodiment can be used for detecting the convex surface, designing the size according to the requirement, and being applicable to detecting the concave surfaces, the aspheric surfaces and other surface shapes with different calibers and different thicknesses, and has wide universality.
The air floatation device adopted by the method provided by the embodiment improves the influence of isolation vibration, reduces the requirement on the detection environment, and has stronger anti-interference capability.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. The supporting device for detecting the surface shape of the large lens comprises an inner side stop block (2) and a base (4) and is characterized by also comprising an air floatation device (3) and a side fixing device (5);
The top of the base (4) is provided with a stepped annular groove;
An air floatation device (3) of the annular air inflation structure is arranged in the outer ring groove;
A plurality of flexible inner side baffle blocks (2) are arranged in inner side baffle block mounting holes formed in the inner ring steps so that the inner side baffle blocks (2) positioned in the inner ring of the air flotation device (3) limit the air flotation device (3);
the side fixing devices (5) are uniformly fixed on the side wall of the base (4), and the lens (1) to be measured is clamped and fixed based on the fixed shafts with radial adjusting functions on the side fixing devices (5).
2. A support device for large lens surface shape detection according to claim 1, characterized in that the air floatation device (3) comprises an annular air inflation tube and an air inflation valve (6);
the side wall of the annular air charging pipe is connected with the output end of the air charging valve (6);
The other end of the air charging valve (6) is arranged in a valve mounting groove arranged on the base (4).
3. A support device for large lens profile detection according to claim 1, characterized in that the base (4) is also provided with a central through hole.
4. The supporting device for detecting the surface shape of a large lens according to claim 1, wherein the height of the inner side stop block (2) is larger than the bottom surface height of the lowest inflation amount of the air floatation device (3) so as to ensure the limit of the inner side stop block (2) on the air floatation device (3).
5. A support device for large lens profile detection according to claim 1, characterized in that the height of the side fixing means (5) is lower than the height of the lens (1) to be measured after it has been mounted on a support device for large lens profile detection.
6. A support control method for large lens surface shape detection, characterized in that the support device for large lens surface shape detection according to any one of claims 1 to 5 is applied, and specifically comprises:
S1, sequentially assembling a base (4), an inner side stop block (2) and an uninflated air floatation device (3);
S2, assembling the lens (1) to be tested, wherein the air floatation device (3) is not inflated and is contracted in the outer ring groove, so that the lens (1) to be tested is arranged on the inner side stop block (2);
s3, assembling the side fixing device (5) onto the base (4), and adjusting the fixing shafts until the central shaft of the lens (1) to be detected is overlapped with the central shaft of the air floatation device (3), so that a plurality of fixing shafts are matched with the limiting lens (1) to be detected;
s4, performing inflation operation on the air floatation device (3) according to actual requirements so as to enable the lens (1) to be tested to leave the inner side stop block (2);
S5, stopping inflating;
s6, adjusting the fixed shafts so that a plurality of fixed shafts cooperate to clamp the lens (1) to be tested;
s7, moving the whole device completely assembled in the step S6 to detection equipment, and detecting the surface shape of the lens to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511834091.3A CN121274903A (en) | 2025-12-08 | 2025-12-08 | A support device and support control method for detecting the surface shape of a large lens. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511834091.3A CN121274903A (en) | 2025-12-08 | 2025-12-08 | A support device and support control method for detecting the surface shape of a large lens. |
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| Publication Number | Publication Date |
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| CN121274903A true CN121274903A (en) | 2026-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511834091.3A Pending CN121274903A (en) | 2025-12-08 | 2025-12-08 | A support device and support control method for detecting the surface shape of a large lens. |
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|---|---|---|---|---|
| JPH0743104A (en) * | 1993-07-30 | 1995-02-10 | Olympus Optical Co Ltd | Spherical measurement device |
| CN103399388A (en) * | 2013-07-29 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Airbag supporting device for optical element |
| CN104457578A (en) * | 2014-12-30 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Air flotation high-precision detection tool |
| CN105259630A (en) * | 2015-11-10 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | A picture frame benchmark torus flatness detection supporting device |
| TW202229810A (en) * | 2021-01-15 | 2022-08-01 | 由田新技股份有限公司 | Air floatation platform and optical inspection system comprising thereof |
| CN114877823A (en) * | 2022-04-11 | 2022-08-09 | 丹阳丹耀光学股份有限公司 | System and method for quickly and accurately detecting prism comprehensive surface shape error based on vertical laser interferometer |
| CN120831780A (en) * | 2024-04-22 | 2025-10-24 | 苏州工业园区汇光科技有限公司 | Adjustment module and measuring microscope |
-
2025
- 2025-12-08 CN CN202511834091.3A patent/CN121274903A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743104A (en) * | 1993-07-30 | 1995-02-10 | Olympus Optical Co Ltd | Spherical measurement device |
| CN103399388A (en) * | 2013-07-29 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Airbag supporting device for optical element |
| CN104457578A (en) * | 2014-12-30 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Air flotation high-precision detection tool |
| CN105259630A (en) * | 2015-11-10 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | A picture frame benchmark torus flatness detection supporting device |
| TW202229810A (en) * | 2021-01-15 | 2022-08-01 | 由田新技股份有限公司 | Air floatation platform and optical inspection system comprising thereof |
| CN114877823A (en) * | 2022-04-11 | 2022-08-09 | 丹阳丹耀光学股份有限公司 | System and method for quickly and accurately detecting prism comprehensive surface shape error based on vertical laser interferometer |
| CN120831780A (en) * | 2024-04-22 | 2025-10-24 | 苏州工业园区汇光科技有限公司 | Adjustment module and measuring microscope |
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