An optical testing device for composite resin lenses

Abstract

The utility model discloses a kind of optical testing devices for composite resin spectacle lens belong to optical testing equipment technical field, including workbench and sliding block, fixedly installed with fixed plate, branch plate and tester on workbench top, fixedly installed with stepper motor on fixed plate side, the output end of stepper motor is fixedly connected with main gear through fixed plate, one side of fixed plate close to main gear is rotatably connected with pinion through pivot.The utility model drives main gear synchronous belt drive velour ball rotation friction and transmission system operation by stepper motor, and transmission system converts rotary motion into the transverse reciprocating motion of lens by crank connecting rod mechanism, so that the circumferential friction of velour ball and the transverse movement of lens composite form irregular friction track, real simulation hand wiping wear effect, finally the optical performance of lens after wear is detected quantitatively by optical tester.

Description

Technical Field

[0001] This utility model relates to the field of optical testing equipment technology, and in particular to an optical testing device for composite resin lenses. Background Technology

[0002] Composite resin lenses are widely used due to their lightweight and impact resistance; however, their inherently low surface hardness makes them prone to scratches during daily cleaning and maintenance. These microscopic scratches cause light scattering, leading to increased lens haze, decreased image contrast, and other optical performance degradation, directly affecting the wearer's visual experience.

[0003] Currently, laboratory assessments of lens abrasion resistance primarily rely on standardized linear reciprocating testing equipment. While such equipment can achieve controlled abrasion testing, its mechanized, fixed trajectory differs significantly from the complex, compound motion patterns experienced by a real person wiping the lens. In actual use, users typically combine rotation, reciprocating motion, and multi-angle pressing actions unconsciously when wiping lenses, creating unique motion trajectories. The single reciprocating motion of existing equipment cannot accurately simulate this real, complex working condition.

[0004] Therefore, existing testing methods struggle to effectively reproduce the wear characteristics of lenses during actual use in a laboratory environment, leading to discrepancies between test results and real-world performance. Developing a device capable of simulating human wiping techniques and generating realistic wear characteristics on lenses during the testing phase is crucial for accurately evaluating the optical durability of resin lenses.

[0005] Therefore, an optical testing device for composite resin lenses is proposed. Utility Model Content

[0006] The purpose of this invention is to solve the technical problems of unrealistic wear simulation, cumbersome testing process and easy lens damage in existing lens testing technology, as well as the inability to comprehensively evaluate the overall optical performance after wear. Therefore, an optical testing device for composite resin lenses is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An optical testing device for composite resin lenses, comprising a workbench and a sliding block. A fixed plate, a support plate and a tester are fixedly mounted above the workbench. A stepper motor is fixedly mounted on one side of the fixed plate. The output end of the stepper motor is fixedly connected with a main gear through the fixed plate. A secondary gear is rotatably connected to the side of the fixed plate close to the main gear through a rotating shaft. The peripheries of the main gear and the secondary gear are both in transmission connection with a transmission belt. A velvet ball is fixedly mounted at the end of the main gear away from the fixed plate through a connecting plate. The end of the secondary gear away from the fixed plate is fixedly connected with a crankshaft, and the bent part of the crankshaft is rotatably connected with a movable plate.

[0009] Preferably, the end of the movable plate away from the crankshaft is rotatably connected with a connecting shaft, the connecting shaft is fixedly mounted at the end of the sliding block close to the crankshaft, a sliding groove is opened on the side of the support plate close to the fixed plate, the sliding block is slidably connected inside the sliding groove of the support plate, and a lens clamp is fixedly mounted on the side of the sliding block away from the support plate.

[0010] Preferably, a gasket is fixedly mounted at the clamping head part of the lens clamp, and the gasket is made of silica gel.

[0011] Preferably, both the main gear and the secondary gear are meshed with the transmission belt.

[0012] Preferably, the crankshaft is in a "Π" shape, and the size of the movable plate is adapted to the crankshaft and the connecting shaft.

[0013] Preferably, the lens clamp can be adapted to lenses of different sizes, and the size of the sliding block is adapted to the groove formed on the surface of the support plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. Non-damage fixation and stable clamping of the lens are realized through the silica gel gasket at the head of the lens clamp. Driven by the stepper motor, the velvet ball performs annular friction on the lens surface, which effectively simulates the real scene of a user wiping the lens in a circular motion; this process can form a micro scratch network conforming to actual use characteristics on the lens surface, providing real and effective sample conditions for subsequent optical testing.

[0016] 2. This compound motion mode breaks through the mechanical limitation of traditional unidirectional friction, and generates wear characteristics highly consistent with real use on the lens surface through accurate reproduction of the motion trajectory; the lens after simulated wear can be directly subjected to quantitative analysis of optical performance. By detecting the attenuation degree of key parameters such as haze value and light transmittance, the corresponding relationship between the wear degree and the deterioration of optical performance is established, which provides an accurate and reliable experimental basis for the evaluation of the wear resistance of the lens. Brief Description of the Drawings

[0017] Figure 1A three-dimensional structural diagram of an optical testing device for composite resin lenses proposed in this utility model. Figure 1 ;

[0018] Figure 2 A three-dimensional structural diagram of an optical testing device for composite resin lenses proposed in this utility model. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the support plate structure of an optical testing device for composite resin lenses proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the structure between the fixing plate and the support plate of an optical testing device for composite resin lenses proposed in this utility model.

[0021] Figure 5 An exploded view of the main gear structure of an optical testing device for composite resin lenses proposed in this utility model;

[0022] Figure 6 This is an exploded view of the movable plate structure of an optical testing device for composite resin lenses proposed in this utility model.

[0023] In the diagram: 1. Workbench; 2. Movable plate; 3. Fixed plate; 4. Crankshaft; 5. Tester; 6. Support plate; 7. Slider; 8. Lens clamp; 9. Stepper motor; 10. Velvet ball; 11. Main gear; 12. Secondary gear; 13. Connecting shaft; 14. Transmission belt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-6An optical testing device for composite resin lenses includes a worktable 1 and a slider 7. A fixed plate 3, a support plate 6, and a testing instrument 5 are fixedly installed on the worktable 1. A stepper motor 9 is fixedly installed on one side of the fixed plate 3. The output end of the stepper motor 9 is fixedly connected to a main gear 11 through the fixed plate 3. A secondary gear 12 is rotatably connected to the side of the fixed plate 3 near the main gear 11 through a rotating shaft. Both the main gear 11 and the secondary gear 12 are connected to a transmission belt 14. A velvet ball 10 is fixedly installed on the end of the main gear 11 away from the fixed plate 3 through a connecting plate. A crankshaft 4 is fixedly connected to the end of the secondary gear 12 away from the fixed plate 3. A movable plate 2 is rotatably connected to the bent part of the crankshaft 4.

[0026] Using the above technical solution, the lens clamping operation is performed first. The composite resin lens to be tested is placed in the clamping area of ​​the dedicated lens clamp 8, and the lens is stably clamped by the adjustment structure of the lens clamp 8. It is particularly important to note that a silicone pad is fixedly installed at the clamping head of the lens clamp 8. This silicone pad has excellent flexibility and cushioning performance, which can ensure the clamping stability of the lens clamp 8 while avoiding the clamping force from acting directly on the lens surface. This effectively prevents scratches, indentations, and other damage to the lens due to clamping, achieving non-destructive fixation of the lens surface and providing a basic guarantee for the accuracy of subsequent test data.

[0027] After the lens is clamped, the stepper motor 9 of the starting device is activated. The stepper motor 9, acting as the power output source, drives the main gear 11, which is fixedly connected to it, to rotate smoothly at a preset speed. Since the velvet ball 10 is fixedly mounted on the end of the main gear 11 away from the fixed plate 3 via a connecting plate, the rotation of the main gear 11 synchronously drives the velvet ball 10 to rotate. During rotation, the velvet ball 10 maintains moderate contact with the lens surface, forming a ring-shaped or near-ring-shaped friction effect. The velvet ball 10 is primarily made of natural fibers (such as silk or cotton) or fiber blends, and its surface texture and softness accurately simulate the contact state between wiping tools and lenses in daily use, thus realistically recreating the scenario of a user wiping the lens in a circular motion. During this process, the fibers on the surface of the velvet ball 10 and any tiny particles that may be trapped there will rub against the lens surface, forming a network of microscopic scratches on the lens surface that conforms to actual usage conditions. This provides realistic sample conditions for subsequent testing by the tester 5 (model DH-12) to determine the extent to which the lens's optical performance (such as light transmittance, refractive index, etc.) is affected by the scratches.

[0028] Specifically, the end of the movable plate 2 away from the crankshaft 4 is rotatably connected to the connecting shaft 13. The connecting shaft 13 is fixedly installed on the end of the slider 7 near the crankshaft 4. The side of the support plate 6 near the fixed plate 3 has a groove. The slider 7 is slidably connected to the groove of the support plate 6. The side of the slider 7 away from the support plate 6 is fixedly installed with a lens clip 8.

[0029] Through the above technical solution, during the operation of the optical testing device for composite resin lenses, the main gear 11 is driven to rotate by the stepping motor 9, which transmits rotational power to the secondary gear 12 through the peripherally meshed transmission belt 14, driving the secondary gear 12 to rotate synchronously, and the several-shaped crankshaft 4 fixedly connected to the secondary gear 12 also rotates together therewith. Since the bent portion of the crankshaft 4 is rotatably connected to the movable plate 2, based on the special structure of the crankshaft 4, its rotational motion can be converted into linear reciprocating motion of the movable plate 2. The end of the movable plate 2 away from the crankshaft 4 is fixedly connected to the slider 7 through the connecting shaft 13. Driven by the linear reciprocating motion of the movable plate 2, the slider 7 moves transversely and linearly along the sliding groove inside the support plate 6, thereby driving the lens clamp 8 fixed on the slider 7 and the clamped lens to move transversely synchronously. At the same time, a velvet ball 10 is fixedly mounted on the end of the main gear 11 away from the fixed plate 3 through a connecting plate. When the main gear 11 rotates, it drives the velvet ball 10 to perform a circular motion. At this time, the circular motion of the velvet ball 10 and the transverse movement of the lens are superimposed on each other, forming a complex irregular friction trajectory on the lens surface. This trajectory effectively overcomes the limitation of unidirectional testing, and can more realistically reproduce the wear caused by manual wiping of the lens in a laboratory environment. Then the lens is accurately moved into the optical tester 5 to quantitatively detect key optical parameters such as haze and light transmittance of the lens.

[0030] Specifically, a gasket is fixedly mounted at the clamping head portion of the lens clamp 8, and the gasket is made of silica gel. Both the main gear 11 and the secondary gear 12 are meshed with the transmission belt 14. The crankshaft 4 is several-shaped, the size of the movable plate 2 is adapted to the crankshaft 4 and the connecting shaft 13, the lens clamp 8 can be adapted to lenses of different sizes, and the size of the slider 7 is adapted to the groove formed on the surface of the support plate 6.

[0031] Working principle:

[0032] When the utility model is in use, firstly, the composite resin lens to be tested is stably clamped by the lens clamp 8 on the slider 7, and the silica gel gasket at the clamping head realizes non-damaging fixation of the lens; the stepping motor 9 on the fixed plate 3 is started, and its output shaft drives the main gear 11 to rotate. On the one hand, the velvet ball 10 fixed on the main gear 11 through the connecting plate rotates synchronously, forming an annular or approximately annular friction with the lens surface. On the other hand, the main gear 11 drives the secondary gear 12 and the several-shaped crankshaft 4 on the secondary gear 12 to rotate through the transmission belt 14. The bent portion of the crankshaft 4 cooperates with the movable plate 2 to convert the rotational motion into linear reciprocating motion of the movable plate 2, and the movable plate 2 further drives the slider 7 to move transversely along the sliding groove of the support plate 6 through the connecting shaft 13, thereby driving the lens to move transversely synchronously; the circular motion of the velvet ball 10 is superimposed with the transverse movement of the lens to form a complex irregular friction trajectory on the lens surface to simulate the wear caused by manual wiping. After the friction is completed, the lens is moved into the tester 5 on the workbench 1 to quantitatively detect key optical parameters such as haze and light transmittance.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An optical testing device for composite resin lenses, comprising a stage (1) and a slider (7), characterized in that, A fixed plate, a support plate and a tester are fixedly mounted above the workbench, a stepper motor is fixedly mounted on one side of the fixed plate, the output end of the stepper motor is fixedly connected with a main gear through the fixed plate, a secondary gear is rotatably connected to the side of the fixed plate adjacent to the main gear through a rotating shaft, the peripheries of the main gear and the secondary gear are both in transmission connection with a transmission belt, one end of the main gear away from the fixed plate is fixedly mounted with a velvet ball through a connecting plate, one end of the secondary gear away from the fixed plate is fixedly connected with a crankshaft, and the bent portion of the crankshaft is rotatably connected with a movable plate.

2. The optical testing device for composite resin lenses according to claim 1, characterized in that, One end of the movable plate away from the crankshaft is rotatably connected with a connecting shaft, the connecting shaft is fixedly mounted at the end of the slider adjacent to the crankshaft, a sliding groove is formed in the side of the support plate adjacent to the fixed plate, the slider is slidably connected inside the sliding groove of the support plate, and a lens clamp is fixedly mounted on the side of the slider away from the support plate.

3. The optical testing device for composite resin lenses according to claim 2, characterized in that, A gasket is fixedly mounted at the clamping head portion of the lens clamp, and the gasket is made of silica gel.

4. The optical testing device for composite resin lenses according to claim 1, characterized in that, Both the main gear and the secondary gear are meshed with the transmission belt.

5. An optical testing device for composite resin lenses according to claim 2, characterized in that, The crankshaft is in a "several" shape, and the size of the movable plate is adapted to the crankshaft and the connecting shaft.

6. An optical testing device for composite resin lenses according to claim 2, characterized in that, The lens clamp can adapt to lenses of different sizes, and the size of the slider is adapted to the groove formed on the surface of the support plate.

Images