Optical lens stress testing device and testing method

Abstract

The invention relates to the technical field of optical lens stress testing, and discloses an optical lens stress testing device and a testing method.The optical lens stress testing device comprises an optical lens and a base, the bottom face and the top face of the optical lens are both in an ellipsoid shape, a lower shell and an upper shell are arranged on the base, a first stress mechanism is arranged on the lower shell, and a second stress mechanism is arranged on the upper shell. A stress detection device and a second stress mechanism are arranged on the upper shell; pressure is applied to the bottom surface and the top surface of the optical lens through the first stress mechanism and the second stress mechanism respectively, and the stress state of the optical lens is detected through the stress detection equipment. According to the optical lens stress testing device and the testing method, pressure can be applied to different areas of the concave surface and the convex surface of the optical lens, so that the overall stress of the optical lens is uniform, the direction of each pressure is perpendicular to the contact point of the optical lens and the ellipsoidal surface, and the accuracy of a stress testing result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lens stress testing, and in particular to an optical lens stress testing device and a testing method. Background Art

[0002] Optical lenses are made of high-purity oxides of silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium, etc. according to a specific formula. Optical lenses must be measured by optical instruments to check whether the stress, purity, transparency, uniformity, refractive index and dispersion rate meet the specifications.

[0003] When performing stress testing on optical lenses, it is usually necessary to use stress detection equipment based on the principle of polarized light. The polarization camera is used to obtain relevant images of the optical lens and analyze the stress state of the optical lens. In addition to testing the optical lens at rest under normal conditions, a certain external force can be applied to the optical lens according to needs to detect the stress changes of the optical lens under the action of external force.

[0004] In the prior art, when applying external force to an optical lens, pressure equipment such as a cylinder or a hydraulic cylinder is usually used, and two pressure equipments apply pressure to the two sides of the optical lens respectively. However, this test method does not take into account that the two sides of the optical lens are different ellipsoidal surfaces, and only relies on two pressure points to contact the two sides of the optical lens, which cannot make the overall force of the optical lens uniform, and the stress test results of the optical lens are not comprehensive enough.

[0005] Therefore, in order to solve the above technical problems existing in the prior art, an optical lens stress testing device and a testing method are proposed. Summary of the invention

[0006] The present invention provides an optical lens stress testing device and a testing method, which can respectively apply pressure to different areas on the concave and convex surfaces of the optical lens, so that the optical lens is subjected to uniform stress as a whole, and the directions of various pressures are perpendicular to their respective contact points with the ellipsoidal surface of the optical lens, thereby improving the accuracy of the stress test results. It solves the problem that in the prior art mentioned in the above background technology, it does not take into account that the two sides of the optical lens are different ellipsoidal surfaces, and only relies on two pressure points to contact the two sides of the optical lens, which cannot make the optical lens subjected to uniform stress as a whole, and the stress test results of the optical lens are not comprehensive enough.

[0007] The present invention provides the following technical solution: an optical lens stress testing device, comprising an optical lens and a base, wherein the bottom surface and the top surface of the optical lens are both ellipsoidal, a lower shell and an upper shell are arranged on the base, a first stress mechanism is arranged on the lower shell, and a stress detection device and a second stress mechanism are arranged on the upper shell;

[0008] Applying pressure to the bottom surface and the top surface of the optical lens respectively by the first stress mechanism and the second stress mechanism, and detecting the stress state of the optical lens by the stress detection device;

[0009] The first stress mechanism comprises a first cylinder and a second cylinder assembly disposed on the lower housing, and a piston rod of the first cylinder is aligned with the center of the bottom surface of the optical lens;

[0010] There are a plurality of second cylinder assemblies, and the plurality of second cylinder assemblies are arranged in an equidistant circular array based on the central axis of the optical lens. The second cylinder assembly includes a second cylinder and a rotating assembly. The piston rod of the second cylinder is aligned with the edge of the bottom surface of the optical lens. The rotating assembly is used to control the rotation adjustment angle of the second cylinder so that the piston rod of the second cylinder is perpendicular to the bottom surface contact portion of the optical lens.

[0011] As an optional solution of the optical lens stress testing device described in the present invention, the rotating assembly includes a support seat, the second cylinder is connected to the support seat, a fixed cylinder is provided on the support seat, a first spur gear is provided on the fixed cylinder, a first rack is provided in the lower shell body, and the first rack is meshed with the first spur gear.

[0012] As an optional solution of the optical lens stress testing device of the present invention, wherein: the first stress mechanism further includes a first slide groove provided on the lower shell, and the support seat is slidably connected in the first slide groove;

[0013] The second cylinder assembly also includes a telescopic assembly. When the support seat is lifted or lowered along the first slide groove, the second cylinder rotates based on the fixed cylinder, and the telescopic assembly drives the second cylinder to extend or retract relative to the support seat.

[0014] As an optional solution of the optical lens stress testing device described in the present invention, wherein: the first slide groove includes a telescopic seat slidably set on the support seat, the second cylinder is set on the telescopic seat, a bearing is set in the support seat, a screw rod is set on the bearing, a nut is set on the telescopic seat, and the nut is threadedly connected to the screw rod.

[0015] As an optional solution of the optical lens stress testing device described in the present invention, wherein: a rotating rod is rotatably arranged on the fixed cylinder, and a second spur gear and a first bevel gear are arranged on the rotating rod; a second rack is arranged in the lower shell body, and the second rack is meshed with the second spur gear; a second bevel gear is arranged on the screw rod, and the second bevel gear is meshed with the first bevel gear.

[0016] As an optional solution of the optical lens stress testing device described in the present invention, the number of teeth of the second spur gear is consistent with that of the first spur gear, and the diameter of the second spur gear is smaller than that of the first spur gear.

[0017] As an optional solution of the optical lens stress testing device described in the present invention, the first stress mechanism also includes a supporting assembly and a lifting assembly, the supporting assembly includes a plurality of limit grooves opened in the lower shell body, and limit blocks are slidably arranged in the plurality of limit grooves, and the plurality of fixed tubes are respectively connected to the plurality of limit blocks.

[0018] As an optional solution of the optical lens stress testing device described in the present invention, wherein: the lifting assembly includes a third cylinder arranged in the lower shell, a first connecting seat is arranged on the piston rod of the third cylinder, a plurality of second connecting seats are arranged on the first connecting seat, and a third connecting seat is arranged on each of the plurality of supporting seats;

[0019] The lifting assembly also includes a plurality of connecting rods, one end of each of the connecting rods is movably hinged to a plurality of the second connecting seats through hinge shafts, and the other end of each of the connecting rods is movably hinged to a plurality of the third connecting seats through hinge shafts.

[0020] As an optional solution of the optical lens stress testing device of the present invention, the second stress mechanism includes a fourth cylinder arranged on the upper shell, the piston rod of the fourth cylinder is aligned with the center of the top surface of the optical lens, a plurality of second slide grooves are opened on the upper shell, a plurality of second slide grooves are slidably provided with slide seats, and a fifth cylinder assembly is rotatably provided on a plurality of slide seats;

[0021] A plurality of the fifth cylinder assemblies are arranged in an equidistant circular array based on the central axis of the optical lens, the piston rod of the fifth cylinder assembly is aligned with the edge of the top surface of the optical lens, the structure of the fifth cylinder assembly is consistent with that of the second cylinder assembly, a sixth cylinder is arranged on the upper shell, a connecting frame is arranged on the piston rod of the sixth cylinder, and the connecting frame is connected to a plurality of the slide seats;

[0022] The piston rods of the first cylinder, the plurality of the second cylinders, the fourth cylinder and the plurality of the fifth cylinder assemblies are all provided with rubber caps.

[0023] The present invention also provides the following technical solution: a testing method for an optical lens stress testing device, comprising the following steps:

[0024] S1. Place the optical lens between the first cylinder and the fourth cylinder, and adjust the positions of several second cylinders according to the curvature of the bottom surface of the optical lens;

[0025] When the curvature at the bottom edge of the optical lens is small, the operation of the third cylinder drives several support seats and several second cylinders to move downward. During the downward movement, the support seat and the second cylinder are rotated toward the central axis of the optical lens through the rotating assembly and the telescopic assembly. At the same time, the second cylinder is extended relative to the support seat, so that the piston rod of the second cylinder is perpendicular to the contact portion between the rubber cap and the bottom surface of the optical lens;

[0026] When the curvature at the edge of the bottom surface of the optical lens is large, the operation of the third cylinder drives several support seats and several second cylinders to move upward, and the second cylinders are rotated in a direction away from the central axis of the optical lens. At the same time, the second cylinder is shortened relative to the support seat, so that the piston rod of the second cylinder is perpendicular to the contact part between the rubber cap and the bottom surface of the optical lens;

[0027] S2, driving a plurality of fifth cylinder assemblies to move up and down by operating the sixth cylinder, so that the piston rods of the plurality of fifth cylinder assemblies are respectively perpendicular to the contact portion between the rubber cap and the bottom surface of the optical lens;

[0028] S3, controlling the first cylinder, several second cylinders, the fourth cylinder and several fifth cylinder assemblies to synchronously apply pressure to the bottom surface and the top surface of the optical lens, and detecting the stress state of the optical lens through a stress detection device.

[0029] The present invention has the following beneficial effects:

[0030] 1. The optical lens stress testing device and testing method apply equal pressure to different points on the surface of the optical lens through multiple evenly distributed cylinders on both sides of the optical lens, and can test the stress state change of the optical lens under the condition of external force.

[0031] 2. The optical lens stress testing device and testing method, in addition to the first cylinder located at the center of the bottom surface of the optical lens, is fixed, and the positions of the second cylinder assemblies around it are adjustable. According to the curvature change of the bottom surface of the optical lens, the positions of several second cylinder assemblies can be adjusted synchronously so that the piston rods of several second cylinder assemblies always remain perpendicular to the surface of the optical lens, that is, multiple pressure vectors of equal size directly act on different points on the surface of the optical lens, and no component vectors are generated due to deviation from the direction. The second stress mechanism is similar to the adjustment of the top surface of the optical lens.

[0032] 3. When adjusting the positions of a plurality of second cylinders, the optical lens stress testing device and testing method only need to control the lifting and lowering of the support base that carries the plurality of second cylinders, so that the plurality of second cylinders and the plurality of support bases can automatically rotate clockwise or counterclockwise, and at the same time, the plurality of second cylinders can automatically extend or shorten relative to the support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0035] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0036] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle.

[0037] Figure 5 For the present invention Figure 2 A partial enlarged view of point C in the middle.

[0038] Figure 6 It is a schematic cross-sectional structural diagram of the lower shell in the present invention.

[0039] Figure 7 For the present invention Figure 6 A partial enlarged view of point D in the middle.

[0040] Figure 8 It is a schematic diagram of the working principle of the present invention.

[0041] Fig. 9 It is a schematic structural diagram of the first stress mechanism and the second stress mechanism in the present invention.

[0042] Fig.10 It is a schematic diagram of the explosion structure of the second stress mechanism in the present invention.

[0043] Fig.11 It is a schematic diagram of the explosion structure of the first stress mechanism in the present invention.

[0044] Fig.12 It is a schematic diagram of the explosion structure of the second cylinder assembly in the present invention.

[0045] Fig.13 It is a schematic diagram of the exploded structure of the rotating assembly in the present invention.

[0046] In the figure: 100, optical lens; 200, base; 210, lower shell; 220, upper shell; 230, stress detection device; 300, first stress mechanism; 310, first cylinder; 320, second cylinder assembly; 321, second cylinder; 322, rotating assembly; 3221, supporting seat; 3222, fixing cylinder; 3223, first spur gear; 3224, first rack; 323, telescopic assembly; 3231, telescopic seat; 3232, bearing; 3233, screw rod; 3234, nut; 3235, rotating rod; 3236, second spur gear; 3237, second rack; 3238, first bevel gear; 3239, second bevel gear; 330, first slide groove; 340, support assembly; 341, limit groove; 342, limit block; 350, lifting assembly; 351, third cylinder; 352, first connecting seat; 353, second connecting seat; 354, third connecting seat; 355, connecting rod; 400, second stress mechanism; 410, fourth cylinder; 420, second slide groove; 430, slide seat; 440, fifth cylinder assembly; 450, sixth cylinder; 460, connecting frame; 500, rubber cap. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] For example, see Figure 1-Figure 8 , an optical lens stress testing device, comprising an optical lens 100 and a base 200, wherein the bottom surface and the top surface of the optical lens 100 are both ellipsoidal, a lower shell 210 and an upper shell 220 are arranged on the base 200, a first stress mechanism 300 is arranged on the lower shell 210, and a stress detection device 230 and a second stress mechanism 400 are arranged on the upper shell 220;

[0049] Apply pressure to the bottom surface and the top surface of the optical lens 100 through the first stress mechanism 300 and the second stress mechanism 400 respectively, and detect the stress state of the optical lens 100 through the stress detection device 230;

[0050] The first stress mechanism 300 includes a first cylinder 310 and a second cylinder assembly 320 disposed on the lower housing 210, and the piston rod of the first cylinder 310 is aligned with the center of the bottom surface of the optical lens 100;

[0051] A plurality of second cylinder assemblies 320 are provided, and the plurality of second cylinder assemblies 320 are arranged in an equidistant circular array based on the central axis of the optical lens 100. The second cylinder assembly 320 comprises a second cylinder 321 and a rotating assembly 322. The piston rod of the second cylinder 321 is aligned with the edge of the bottom surface of the optical lens 100. The rotating assembly 322 is used to control the rotation adjustment angle of the second cylinder 321 so that the piston rod of the second cylinder 321 is perpendicular to the bottom surface contact portion of the optical lens 100.

[0052] The rotating assembly 322 includes a support base 3221 , and the second cylinder 321 is connected to the support base 3221 .

[0053] In this embodiment: the optical lens 100 can be a common myopia optical lens, especially an aspherical lens, whose top and bottom surfaces are ellipsoidal surfaces, that is, the curvature close to the central axis is larger, and the curvature gradually decreases toward the periphery.

[0054] Secondly, when applying pressure to a certain point on the surface of the optical lens 100, the vector direction of the pressure should be as perpendicular as possible to the point where the vector contacts the surface of the optical lens 100. This can ensure that the pressure vector will not generate component vectors due to not being perpendicular to the corresponding point, resulting in different actual pressures on multiple points on the surface of the optical lens 100 when multiple cylinders have the same output.

[0055] In order to apply uniform pressure to the upper and lower surfaces of the optical lens 100, first, pressure is applied to the center of the lower concave surface of the optical lens 100 by means of the first cylinder 310, and the position of the first cylinder 310 is fixed.

[0056] Different lenses have different concave and convex curvatures on the top and bottom, so the positions of the second cylinder assemblies 320 around the lens need to be adjusted. The second cylinder assemblies 320 are arranged equidistantly around the circumference. Four second cylinder assemblies 320 can be arranged left and right, front and back. Take the second cylinder assembly 320 on the left side as an example. Figure 8 As shown in , assuming that the first arc surface indicated by the dotted line corresponds to the ellipsoidal surface of the bottom surface of the optical lens 100, the position of the second cylinder assembly 320 should be as indicated by the first position.

[0057] When the curvature of the bottom surface of the optical lens 100 decreases as a whole, when changing from the first curved surface to the second curved surface, the second cylinder assembly 320 should still be perpendicular to the contact point with the second curved surface. The support seat 3221 and the second cylinder 321 need to be rotated clockwise toward the intermediate axis by a certain angle as a whole, and then the position of the support seat 3221 is lowered along the vertical line in the figure, and the position of the second cylinder 321 is extended relative to the support seat 3221 to keep the rubber cap 500 on the piston rod of the second cylinder 321 in contact with the second curved surface. The three movements of lowering, rotating and extending can be achieved simultaneously.

[0058] Similarly, if the curvature of the bottom surface of the optical lens 100 becomes larger, the support base 3221 needs to be raised and rotated counterclockwise by a certain angle, and at the same time, the distance between the second cylinder 321 and the support base 3221 is shortened.

[0059] The same is true for the top surface of the optical lens 100. At the center of the top surface, the fourth cylinder 410 applies a pressure to the optical lens 100 equal to that of the first cylinder 310. The difference is that the piston rods of the surrounding fifth cylinder assembly 440 are perpendicular to their respective contact points with the top surface of the optical lens 100.

[0060] The stress detection device 230 can select different types of optical instruments according to actual conditions, such as the fully automatic polarization stress meter NMV-145L. As a conventional technical means, its specific structure and working principle are not described in detail.

[0061] Embodiment 2: This embodiment is an improvement on Embodiment 1. For details, please refer to Figure 1-Figure 13 A fixing cylinder 3222 is disposed on the support seat 3221, a first spur gear 3223 is disposed on the fixing cylinder 3222, a first rack 3224 is disposed in the lower housing 210, and the first rack 3224 is meshed with the first spur gear 3223;

[0062] The first stress mechanism 300 further includes a first slide groove 330 formed on the lower housing 210, and the support seat 3221 is slidably connected in the first slide groove 330;

[0063] The second cylinder assembly 320 further includes a telescopic assembly 323. When the support seat 3221 is lifted and lowered along the first slide groove 330, the second cylinder 321 rotates based on the fixed cylinder 3222, and the telescopic assembly 323 drives the second cylinder 321 to telescope relative to the support seat 3221.

[0064] The first slide slot 330 includes a telescopic seat 3231 slidably disposed on the support seat 3221, the second cylinder 321 is disposed on the telescopic seat 3231, a bearing 3232 is disposed in the support seat 3221, a screw rod 3233 is disposed on the bearing 3232, a nut 3234 is disposed on the telescopic seat 3231, and the nut 3234 is threadedly connected to the screw rod 3233;

[0065] A rotating rod 3235 is rotatably provided on the fixed cylinder 3222, and a second spur gear 3236 and a first bevel gear 3238 are provided on the rotating rod 3235. A second rack 3237 is provided in the lower housing 210, and the second rack 3237 meshes with the second spur gear 3236. A second bevel gear 3239 is provided on the screw rod 3233, and the second bevel gear 3239 meshes with the first bevel gear 3238.

[0066] The number of teeth of the second spur gear 3236 is the same as that of the first spur gear 3223 , and the diameter of the second spur gear 3236 is smaller than that of the first spur gear 3223 ;

[0067] The first stress mechanism 300 further includes a support assembly 340 and a lifting assembly 350. The support assembly 340 includes a plurality of limit slots 341 provided in the lower housing 210. Limit blocks 342 are slidably disposed in the plurality of limit slots 341. A plurality of fixing cylinders 3222 are respectively connected to the plurality of limit blocks 342.

[0068] The lifting assembly 350 includes a third cylinder 351 disposed in the lower housing 210, a first connecting seat 352 is disposed on the piston rod of the third cylinder 351, a plurality of second connecting seats 353 are disposed on the first connecting seat 352, and a third connecting seat 354 is disposed on each of the plurality of supporting seats 3221;

[0069] The lifting assembly 350 further includes a plurality of connecting rods 355 , one end of each of the connecting rods 355 is movably hinged to a plurality of second connecting seats 353 through hinge shafts, and the other end of each of the connecting rods 355 is movably hinged to a plurality of third connecting seats 354 through hinge shafts.

[0070] In this embodiment: first, the piston rod of the third cylinder 351 descends, the first connecting seat 352 and the four second connecting seats 353 descend, and the four third connecting seats 354 and the four supporting seats 3221 are driven to descend synchronously through the transmission of the four connecting rods 355.

[0071] Still taking the left side group of second cylinder assemblies 320 as an example, the support seat 3221 and its fixed fixed cylinder 3222 and the first spur gear 3223 descend at the same time. Since the first spur gear 3223 is engaged with the first rack 3224 located on its left side, the support seat 3221 and the second cylinder 321 will rotate clockwise toward the center axis position based on the fixed cylinder 3222.

[0072] At the same time, the rotating rod 3235 coaxial with the fixed cylinder 3222 and the second spur gear 3236 fixed on the rotating rod 3235 move downward synchronously, and the second spur gear 3236 also meshes with the second rack 3237 located on the left side thereof, so that the second spur gear 3236 rotates clockwise, but because the teeth of the second spur gear 3236 are smaller in size, the teeth of the second rack 3237 are denser than those of the first rack 3224, that is, when moving downward by the same distance, the second spur gear 3236 passes by more teeth of the second rack 3237, so that the second spur gear 3236 and the rotating rod 3235 rotate clockwise faster than the fixed cylinder 3222 and the supporting seat 3221. Therefore, the rotating rod 3235 rotates clockwise relative to the supporting seat 3221.

[0073] At this time, the rotating rod 3235 and the first bevel gear 3238 rotate, driving the second bevel gear 3239 and the screw rod 3233 to rotate, and the screw rod 3233 rotates to move the nut 3234 threadedly connected thereto upward, so that the telescopic seat 3231 slides upward relative to the support seat 3221. The second cylinder 321 on the telescopic seat 3231 is extended upward relative to the support seat 3221.

[0074] The limiting block 342 is lifted and lowered along the limiting groove 341 during the lifting and lowering process of the supporting seat 3221 , so as to support and limit the supporting seat 3221 .

[0075] Similarly, the piston rod of the third cylinder 351 descends, drives the four second cylinders 321 to descend, rotate, and lengthen synchronously, and the curvature of the bottom surface of the corresponding optical lens 100 decreases as a whole. The piston rod of the third cylinder 351 rises, drives the four second cylinders 321 to rise, rotate, and shorten synchronously, and the curvature of the bottom surface of the corresponding optical lens 100 increases as a whole.

[0076] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1-Figure 10 The second stress mechanism 400 includes a fourth cylinder 410 disposed on the upper shell 220, the piston rod of the fourth cylinder 410 is aligned with the center of the top surface of the optical lens 100, and a plurality of second slide grooves 420 are provided on the upper shell 220, and a slide seat 430 is slidably disposed in each of the plurality of second slide grooves 420, and a fifth cylinder assembly 440 is rotatably disposed on each of the plurality of slide seats 430;

[0077] A plurality of fifth cylinder assemblies 440 are arranged in an equidistant circular array based on the central axis of the optical lens 100, and the piston rod of the fifth cylinder assembly 440 is aligned with the edge of the top surface of the optical lens 100. The structure of the fifth cylinder assembly 440 is consistent with that of the second cylinder assembly 320. A sixth cylinder 450 is arranged on the upper housing 220, and a connecting frame 460 is arranged on the piston rod of the sixth cylinder 450. The connecting frame 460 is connected to the plurality of slide seats 430.

[0078] The piston rods of the first cylinder 310 , the plurality of second cylinders 321 , the fourth cylinder 410 and the plurality of fifth cylinder assemblies 440 are all provided with rubber caps 500 .

[0079] In this embodiment: in the second stress mechanism 400 located at the upper side, the position of the fourth cylinder 410 is fixed, and the four slide seats 430 are driven by the sixth cylinder 450 and the connecting frame 460 to rise and fall along the four second slide slots 420 to support the four fifth cylinder assemblies 440. The structure of the fifth cylinder assembly 440 is consistent with that of the second cylinder assembly 320.

[0080] Taking the fifth cylinder assembly 440 on the left side as an example, when the curvature of the top surface of the optical lens 100 decreases as a whole, the fifth cylinder assembly 440 on the left side needs to rotate clockwise to the left by a certain angle relative to the central axis while rising, and extend at the same time. For the fifth cylinder assembly 440 on the left side, the rack structure corresponding to the first rack 3224 and the second rack 3237 is arranged on the right side of the gear structure corresponding to the first spur gear 3223 and the second spur gear 3236.

[0081] In addition, the rubber caps 500 installed on the heads of all piston rods play a role in protecting the optical lens 100 and can reduce the pressure on the surface of the optical lens 100 .

[0082] Example 4, please refer to Figure 1-Figure 13 , a testing method for an optical lens stress testing device comprises the following steps:

[0083] S1, placing the optical lens 100 between the first cylinder 310 and the fourth cylinder 410, and adjusting the positions of the plurality of second cylinders 321 according to the curvature of the bottom surface of the optical lens 100;

[0084] When the curvature at the bottom edge of the optical lens 100 is small, the third cylinder 351 is operated to drive a plurality of support seats 3221 and a plurality of second cylinders 321 to move downward. During the downward movement, the support seats 3221 and the second cylinders 321 are rotated toward the central axis of the optical lens 100 through the rotating assembly 322 and the telescopic assembly 323. At the same time, the second cylinder 321 is extended relative to the support seat 3221, so that the piston rod of the second cylinder 321 is perpendicular to the contact portion between the rubber cap 500 and the bottom surface of the optical lens 100.

[0085] When the curvature at the bottom edge of the optical lens 100 is large, the third cylinder 351 drives the plurality of support seats 3221 and the plurality of second cylinders 321 to move upward, and the second cylinders 321 rotate in a direction away from the central axis of the optical lens 100. At the same time, the second cylinder 321 is shortened relative to the support seat 3221, so that the piston rod of the second cylinder 321 is perpendicular to the contact portion between the rubber cap 500 and the bottom surface of the optical lens 100.

[0086] S2, driving the plurality of fifth cylinder assemblies 440 to move up and down by the operation of the sixth cylinder 450, so that the piston rods of the plurality of fifth cylinder assemblies 440 are respectively perpendicular to the contact parts between the rubber cap 500 and the bottom surface of the optical lens 100;

[0087] S3. Control the first cylinder 310, several second cylinders 321, the fourth cylinder 410 and several fifth cylinder assemblies 440 to synchronously apply pressure to the bottom and top surfaces of the optical lens 100, and detect the stress state of the optical lens 100 through the stress detection device 230.

[0088] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0089] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An optical lens stress testing device, comprising an optical lens (100) and a base (200), characterized in that: The bottom surface and the top surface of the optical lens (100) are both ellipsoidal, a lower shell (210) and an upper shell (220) are provided on the base (200), a first stress mechanism (300) is provided on the lower shell (210), and a stress detection device (230) and a second stress mechanism (400) are provided on the upper shell (220); applying pressure to the bottom surface and the top surface of the optical lens (100) respectively through the first stress mechanism (300) and the second stress mechanism (400), and detecting the stress state of the optical lens (100) through the stress detection device (230); The first stress mechanism (300) comprises a first cylinder (310) and a second cylinder assembly (320) arranged on the lower housing (210), and the piston rod of the first cylinder (310) is aligned with the center of the bottom surface of the optical lens (100); The second cylinder assembly (320) is provided in a plurality, and the plurality of second cylinder assemblies (320) are arranged in an equidistant circular array based on the central axis of the optical lens (100). The second cylinder assembly (320) includes a second cylinder (321) and a rotating assembly (322). The piston rod of the second cylinder (321) is aligned with the edge of the bottom surface of the optical lens (100). The rotating assembly (322) is used to control the rotation adjustment angle of the second cylinder (321) so that the piston rod of the second cylinder (321) is perpendicular to the bottom surface contact portion of the optical lens (100).

2. The optical lens stress testing device according to claim 1, characterized in that: The rotating assembly (322) includes a support seat (3221), the second cylinder (321) is connected to the support seat (3221), a fixing cylinder (3222) is provided on the support seat (3221), a first spur gear (3223) is provided on the fixing cylinder (3222), a first rack (3224) is provided in the lower shell (210), and the first rack (3224) is meshed with the first spur gear (3223).

3. The optical lens stress testing device according to claim 2, characterized in that: The first stress mechanism (300) further comprises a first slide groove (330) provided on the lower shell (210), and the support seat (3221) is slidably connected in the first slide groove (330); The second cylinder assembly (320) also includes a telescopic assembly (323). When the support seat (3221) is lifted or lowered along the first slide groove (330), the second cylinder (321) rotates based on the fixed cylinder (3222), and at the same time, the telescopic assembly (323) drives the second cylinder (321) to extend and retract relative to the support seat (3221).

4. The optical lens stress testing device according to claim 3, characterized in that: The first slide groove (330) includes a telescopic seat (3231) slidably arranged on the support seat (3221), the second cylinder (321) is arranged on the telescopic seat (3231), a bearing (3232) is arranged in the support seat (3221), a screw rod (3233) is arranged on the bearing (3232), a nut (3234) is arranged on the telescopic seat (3231), and the nut (3234) is threadedly connected to the screw rod (3233).

5. The optical lens stress testing device according to claim 4, characterized in that: A rotating rod (3235) is rotatably arranged on the fixed cylinder (3222), and a second spur gear (3236) and a first bevel gear (3238) are arranged on the rotating rod (3235); a second rack (3237) is arranged in the lower shell (210), and the second rack (3237) is meshed with the second spur gear (3236); a second bevel gear (3239) is arranged on the screw rod (3233), and the second bevel gear (3239) is meshed with the first bevel gear (3238).

6. The optical lens stress testing device according to claim 5, characterized in that: The number of teeth of the second spur gear (3236) is consistent with that of the first spur gear (3223), and the diameter of the second spur gear (3236) is smaller than that of the first spur gear (3223).

7. The optical lens stress testing device according to claim 6, characterized in that: The first stress mechanism (300) further comprises a support assembly (340) and a lifting assembly (350), wherein the support assembly (340) comprises a plurality of limit slots (341) provided in the lower shell (210), a limit block (342) being slidably arranged in each of the limit slots (341), and a plurality of the fixing cylinders (3222) being respectively connected to the plurality of limit blocks (342).

8. The optical lens stress testing device according to claim 7, characterized in that: The lifting assembly (350) comprises a third cylinder (351) arranged in the lower shell (210); a first connecting seat (352) is arranged on the piston rod of the third cylinder (351); a plurality of second connecting seats (353) are arranged on the first connecting seat (352); and a third connecting seat (354) is arranged on each of the plurality of supporting seats (3221); The lifting assembly (350) further comprises a plurality of connecting rods (355), one end of each of the connecting rods (355) being movably hinged to a plurality of the second connecting seats (353) via hinge shafts, and the other end of each of the connecting rods (355) being movably hinged to a plurality of the third connecting seats (354) via hinge shafts.

9. The optical lens stress testing device according to claim 8, characterized in that: The second stress mechanism (400) comprises a fourth cylinder (410) arranged on the upper shell (220), the piston rod of the fourth cylinder (410) is aligned with the center of the top surface of the optical lens (100), a plurality of second slide grooves (420) are provided on the upper shell (220), a plurality of second slide grooves (420) are each slidably provided with a slide seat (430), and a fifth cylinder assembly (440) is rotatably provided on a plurality of the slide seats (430); A plurality of the fifth cylinder assemblies (440) are arranged in an equidistant circular array based on the central axis of the optical lens (100); the piston rod of the fifth cylinder assembly (440) is aligned with the edge of the top surface of the optical lens (100); the structure of the fifth cylinder assembly (440) is consistent with that of the second cylinder assembly (320); a sixth cylinder (450) is arranged on the upper shell (220); a connecting frame (460) is arranged on the piston rod of the sixth cylinder (450); and the connecting frame (460) is connected to a plurality of the slide seats (430); The piston rods of the first cylinder (310), the plurality of the second cylinders (321), the fourth cylinder (410) and the plurality of the fifth cylinder assemblies (440) are all provided with rubber caps (500).

10. The testing method of the optical lens stress testing device according to claim 9, characterized in that: The steps include: S1, placing the optical lens (100) between the first cylinder (310) and the fourth cylinder (410), and adjusting the positions of the plurality of second cylinders (321) according to the curvature of the bottom surface of the optical lens (100); When the curvature at the bottom edge of the optical lens (100) is small, the third cylinder (351) is operated to drive a plurality of support seats (3221) and a plurality of second cylinders (321) to move downward. During the downward movement, the support seats (3221) and the second cylinders (321) are rotated toward the center axis of the optical lens (100) through the rotating assembly (322) and the telescopic assembly (323). At the same time, the second cylinder (321) is extended relative to the support seat (3221), so that the piston rod of the second cylinder (321) is perpendicular to the contact portion between the rubber cap (500) and the bottom surface of the optical lens (100); When the curvature of the bottom edge of the optical lens (100) is relatively large, the third cylinder (351) is operated to drive the plurality of support seats (3221) and the plurality of second cylinders (321) to move upward, and the second cylinders (321) are rotated in a direction away from the central axis of the optical lens (100), and at the same time, the second cylinder (321) is shortened relative to the support seat (3221), so that the piston rod of the second cylinder (321) is perpendicular to the contact portion between the rubber cap (500) and the bottom surface of the optical lens (100); S2, driving the plurality of fifth cylinder assemblies (440) to move up and down by operating the sixth cylinder (450), so that the piston rods of the plurality of fifth cylinder assemblies (440) are respectively perpendicular to the contact portions between the rubber cap (500) and the bottom surface of the optical lens (100); S3, controlling the first cylinder (310), a plurality of second cylinders (321), a fourth cylinder (410) and a plurality of fifth cylinder assemblies (440) to synchronously apply pressure to the bottom surface and the top surface of the optical lens (100), and detecting the stress state of the optical lens (100) through the stress detection device (230).

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