Contact angle contact lens test fixture
By designing a contact angle contact lens test fixture, the problem of low contact angle measurement accuracy in the prior art is solved, and higher measurement accuracy and better contact lens quality and wear comfort are achieved.
Patent Information
- Application Number
- CN202420021283.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-05
AI Technical Summary
The prior art cannot effectively measure the contact angle of contact lenses, resulting in a reduced accuracy of the test data and a large error, which affects the quality and wear comfort of contact lenses.
A contact angle contact lens test fixture is designed, including a support fixture and a load-bearing mold. Through the imaging channel, the light source, lens and load-bearing mold of the contact angle measuring device are in line to ensure the stability of the droplet data acquisition on the contact lens. sex.
It improves the accuracy of the test data, reduces measurement errors, ensures the quality and wear comfort of the contact lenses, and provides a better adaptation experience.
Smart Images
Figure CN222481783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of contact angle contact lens testing jigs, in particular to a contact angle contact lens testing jig. Background Art
[0002] Contact lenses are widely used in people's daily lives. From the perspective of interfacial chemistry, contact lenses are one of the objects that have the most and closest contact with humans besides cosmetics. Although contact lenses are in direct contact with the human body, which is fragile and precious, their interfacial chemical properties, especially the properties of contact angles, have not received widespread attention. At present, there is no professional contact angle contact lens test fixture in domestic contact angle measuring equipment. When measuring non-planar materials, the stability of contact lens placement cannot be guaranteed, which reduces the accuracy of test data and leads to large errors. At the same time, it will also reduce the quality and wearing comfort of contact lenses, resulting in a reduced user adaptation experience. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a contact angle contact lens testing jig.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a contact angle contact lens test fixture, including a support fixture, the support fixture includes a pair of right-angle frames and a base, the right-angle frames are arranged above the base, the right-angle frames are symmetrically arranged, the right-angle frames include columns and beams, the columns are perpendicular to the base, the beams extend from the top of the columns in the horizontal direction, the beams are arranged vertically on the columns and protrude from the base, an imaging channel is formed between the two beams, a bearing mold for bearing contact lenses is arranged between the beams, and the bearing mold is located above the imaging channel. The imaging channel makes the light source, lens and bearing mold of the contact angle measuring instrument equipment in the same straight line, which is convenient for data collection of droplets on the contact lens, and the imaging channel provides a movable adjustment position for the needle of the syringe.
[0005] Preferably, the supporting mold includes a base mold and a pressure mold detachably arranged on the base mold, and a side of the pressure mold close to the base mold is provided with a plurality of spherical convex surfaces, and the spherical convex surfaces are arranged in a convex arc shape, and a side of the base mold close to the pressure mold is provided with a plurality of spherical grooves for the spherical convex surfaces to be embedded.
[0006] Preferably, the supporting mold is a bottom mold, the bottom mold is provided with a spherical groove sunken into the bottom mold surface, the spherical groove has a through hole penetrating the bottom mold, and the diameter of the through hole is greater than the diameter of the small contact lens.
[0007] Preferably, the load-bearing mold is a pressing mold, and the pressing mold is provided with a spherical convex surface.
[0008] Preferably, the right-angle frame and the base are integrally formed.
[0009] Preferably, two bracket assembly holes may be provided on the crossbeam of each right-angle frame, and the bracket assembly holes facilitate the bottom mold or the pressure mold to be installed on the right-angle frame.
[0010] Preferably, at least one pair of first magnet grooves is provided around the spherical groove, and the first magnet grooves are used to place the first magnets. At least one pair of second magnet grooves is provided around the spherical convex surface, and the second magnet grooves are used to place the second magnets. The first magnets can be magnetically attracted to each other. The bottom mold and the pressing mold are detachably connected by magnets.
[0011] Preferably, four corners of the bottom mold are respectively provided with a bottom mold assembly hole, and the bottom mold mounting holes penetrate through the upper and lower surfaces of the bottom mold.
[0012] Preferably, four corners of the die are each provided with a die assembly hole, and the die assembly hole runs through the upper and lower surfaces of the bottom die.
[0013] The beneficial effects of the utility model are as follows: the overall structure of the contact angle contact lens testing fixture of the utility model is simple, and the components can be detachably installed, which is convenient for testing and practical use, and can provide comprehensive and accurate measurements with high scalability. When measuring non-planar materials, the spherical convex surface and the spherical concave surface can ensure the stability of the placement of the contact lenses, make the positioning measurement and analysis images more stable, improve the efficiency and accuracy of the test data, reduce the measurement errors, make the product measurement repeatability more stable, more research-worthy, meet more test functions, and improve the measurement accuracy and production efficiency. At the same time, it will also play a great role in improving the quality and wearing comfort of contact lenses, and provide a good adaptation experience effect between the eyes and the lenses. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The utility model is a schematic diagram of a contact lens testing fixture installed in a quartz glass pool for testing.
[0015] Figure 2 It is a structural schematic diagram of a contact lens testing fixture of the utility model.
[0016] Figure 3 It is a structural schematic diagram of the supporting clamp of the utility model.
[0017] Figure 4 It is a structural schematic diagram of the bottom mold of the utility model.
[0018] Figure 5 It is a structural schematic diagram of the compression mold of the utility model.
[0019] Figure 6The utility model is a schematic diagram of the explosion structure of the contact lens testing fixture.
[0020] Figure 7 It is a schematic diagram of the first testing method of the utility model.
[0021] Figure 8 It is an explosion schematic diagram of the first test method of the utility model.
[0022] Fig. 9 It is a schematic diagram of the second testing method of the utility model.
[0023] Fig.10 It is an explosion schematic diagram of the second test method of the utility model.
[0024] Fig.11 It is a schematic diagram of the third testing method of the utility model.
[0025] Fig.12 It is a schematic diagram of the overall structure of the utility model applied to contact angle measuring instrument detection equipment.
[0026] Reference numerals
[0027] 1. Contact lens test fixture; 11. Support fixture; 111. Base; 112. Right angle frame; 1121. Column; 1122. Beam; 1123. Bracket assembly hole; 12. Bottom mold; 121. Spherical groove; 122. First magnet groove; 123. First magnet; 124. Bottom mold assembly hole; 13. Press mold; 131. Spherical convex surface; 132. Second magnet groove; 133. Second magnet; 134. Press mold assembly hole; 2. Quartz glass pool; 21. Glass pool opening; 3. Syringe; 4. Contact lens; 5. Contact angle measuring instrument detection equipment. DETAILED DESCRIPTION
[0028] See also Figure 1-12 As shown, the utility model relates to a contact angle contact lens test fixture, the contact lens test fixture 1 is adapted to test the contact angle measuring instrument detection equipment 5, the contact lens test fixture 1 comprises a support fixture 11 and a load-bearing mold, the support fixture 11 comprises a pair of right-angle frames 112 and a base 111, the right-angle frame 112 is arranged at the upper end of the base 111, the right-angle frame 112 and the base 111 are integrally formed, the right-angle frames 112 are symmetrically arranged, the right-angle frame 112 comprises a column 1121 and a beam 1122, the column 1121 is perpendicular to the base 111, the beam 1122 extends in the lateral direction from the top of the column 1121, the beam 1122 is perpendicular to the column 1121 and protrudes out of the base 111, and an imaging channel (such as Fig.12A supporting mold for supporting the contact lens 4 is set between the beams 1122, and the supporting mold is located above the imaging channel.
[0029] Furthermore, in this embodiment, two bracket assembly holes 1123 are provided on each crossbeam 1122 .
[0030] In this embodiment, the bearing mold includes a bottom mold 12 and a pressing mold 13. The bottom mold 12 has a quadrilateral shape. The spherical groove 121 is arranged at the center of the bottom mold 12. At least one pair of first magnet grooves 122 are arranged around the spherical groove 121. The first magnet groove 122 is used to place the first magnet 123. The four corners of the bottom mold 12 are provided with bottom mold assembly holes 124. The bottom mold 12 assembly holes penetrate the upper and lower surfaces of the bottom mold 12. The positions of the bottom mold assembly holes 124 match the positions of the bracket assembly holes 1123. The bottom mold assembly holes 124 can be installed on the bracket assembly holes 1123 through fixing parts.
[0031] In this embodiment, the shape of the die 13 is a quadrilateral, and the spherical convex surface 131 is arranged at the center of the die 13. It should be noted that the spherical convex surface 131 matches the shape of the spherical groove 121, so that the spherical convex surface 131 can be embedded and installed in the groove. At least one pair of second magnet grooves 132 are arranged around the spherical convex surface 131. The second magnet grooves 132 are used to place the second magnets 133. The positions of the second magnet grooves 132 and the first magnet grooves 122 match each other. When installed, the second magnets 133 and the first magnets 123 are attracted by magnetic force, so that the die 13 and the bottom die 12 are positioned. The four corners of the die 13 are provided with die assembly holes 134. The die assembly holes 134 run through the upper and lower surfaces of the die 13. The positions of the die assembly holes 134 match those of the bottom die assembly holes 124. The die assembly holes 134 can be installed on the bottom die assembly holes 124 or the bracket assembly grooves through fixing parts.
[0032] Furthermore, in this embodiment, a highly transparent quartz glass pool 2 is used as a water tank for placing the new contact lens test fixture 1. The upper part of the quartz glass pool 2 has a glass pool opening 21. When the contact lens test fixture 1 is assembled, it enters the interior of the quartz glass pool 2 from the glass pool opening 21. It should be noted that the contact lens test fixture 1 matches the internal size of the quartz glass pool 2. The contact lens test fixture 1 is installed in the quartz glass pool 2 and cannot be too loose or firm, so that it is easy to take out and better observe the image. In addition, the utility model is tested by dripping liquid with a syringe 3. The material of the syringe 3 is 304 stainless steel to prevent rust. The syringe 3 is connected and bent or vertically needled according to the size. The syringe 3 can inject bubbles or water droplets. The image obtained by the contact angle measuring instrument detection device 5 is inverted or directly subjected to surface fitting measurement and analysis.
[0033] The contact angle refers to the tangent of the gas-liquid interface at the intersection of gas, liquid and solid. The angle θ between this tangent on the liquid side and the solid-liquid boundary line is a measure of the degree of wettability.
[0034] The contact angle measuring device (optical contact angle measuring device) is used to test contact lenses. The testing methods include a bubble capture method, a top view measurement method or a common testing method. In view of the above testing methods, the utility model provides a contact angle contact lens testing fixture that cooperates with the contact angle measuring device to be applicable to a variety of testing methods.
[0035] If the bubble capture method is used, the bubble capture method is to immerse the contact lens in physiological saline, and then float a small bubble upward to the contact lens to measure its contact angle value. The contact angle contact lens test fixture is composed of a supporting fixture 11, a bottom mold 12 and a pressing mold 13. The bottom mold 12 and the pressing mold 13 are fixed by magnetic attraction with the first magnet 123 through the second magnet 133, and the bottom mold 12 is fixed on the supporting fixture 11. The contact lens test fixture 1 is placed in the quartz glass pool 2, and the contact lens test fixture 1 is in the bottom mold 1. The bottom mold 12 is installed on the supporting fixture 11, and the pressing mold 13 is installed on the bottom mold 12. The spherical convex surface 131 is embedded and installed in the spherical groove 121. At the same time, the first magnet 123 and the second magnet 133 between the bottom mold 12 and the pressing mold 13 are magnetically attracted to complete the positioning. After installation, the spherical convex surface 131 protrudes from the through hole at the bottom of the bottom mold 12 through the spherical groove 121, and the syringe 3 is bent according to the size and arranged under the spherical convex surface 131. The contact lens 4 is attached to the spherical convex surface 131, and the contact lens 4 is tested by blowing air with the syringe 3 to form bubbles.
[0036] If the top view measurement method is adopted, the contact angle contact lens test fixture is composed of a support fixture 11 and a bottom mold 12. The contact lens test fixture 1 is taken out of the quartz glass pool 2 and directly placed on the contact angle test carrier platform. The bottom mold 12 is installed on the support fixture 11, and the spherical groove 121 of the bottom mold 12 faces upward. The contact lens 4 is placed in the spherical groove 121, and the syringe 3 is vertically or obliquely arranged above the spherical groove 121, and the liquid is dropped on the concave surface of the contact lens 4, and the dripping liquid is observed by top view to achieve the test of the concave surface by top view.
[0037] If the ordinary measurement method (parallel observation of droplet contact) is adopted, the contact angle contact lens test jig is composed of a support fixture 11 and a die 13. The contact lens test jig 1 is taken out of the quartz glass pool 2 and directly placed on the contact angle test carrier platform (not shown in the figure). The die 13 is installed on the support fixture 11, and the spherical convex surface 131 of the die 13 faces upward. The syringe 3 is perpendicular to the spherical convex surface 131, and the contact lens 4 is placed on the spherical convex surface 131, and the contact lens 4 is dripped with liquid through the syringe 3 for testing and observation.
[0038] The utility model is used in conjunction with a contact angle measuring instrument. When different testing methods are adopted, the bottom die, the pressing die and the supporting fixture of the utility model can be used in any combination, and has a wide range of applications.
[0039] The utility model has a simple overall structure of a contact angle contact lens testing jig, and the components can be detachably installed, which is convenient for testing and practicality, and can provide comprehensive and accurate measurements with high expandability. When measuring non-planar materials, the spherical convex surface 131 and the spherical concave surface can ensure the stability of the placement of the contact lenses, make the positioning measurement and analysis images more stable, improve efficiency and test data accuracy, reduce measurement errors, make product measurement repeatability more stable, more research-worthy, meet more test functions, and improve measurement accuracy and production efficiency. At the same time, it will also play a great role in improving the quality and wearing comfort of contact lenses, and provide a good adaptation experience effect between the eyes and the lenses.
[0040] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A contact angle contact lens testing fixture, characterized in that: It includes a supporting fixture, which includes a pair of right-angle frames and a base. The right-angle frames are arranged above the base and are symmetrically arranged between the right-angle frames. The right-angle frames include columns and beams. The columns are perpendicular to the base. The beams extend from the tops of the columns in the lateral direction. The beams are perpendicular to the columns and protrude from the base. An imaging channel is formed between the two beams. A bearing mold for bearing contact lenses is arranged between the beams, and the bearing mold is located above the imaging channel.
2. A contact angle contact lens testing jig according to claim 1, characterized in that: The supporting mold includes a bottom mold and a pressing mold detachably arranged on the bottom mold, and a side of the pressing mold close to the bottom mold is provided with a plurality of spherical convex surfaces, and the spherical convex surfaces are arranged in a convex arc shape. A side of the bottom mold close to the pressing mold is provided with a plurality of spherical grooves for the spherical convex surfaces to be embedded.
3. A contact angle contact lens testing jig according to claim 2, characterized in that: The bearing mold is a bottom mold, and the bottom mold is provided with a spherical groove sunken into the bottom mold surface. The spherical groove has a through hole penetrating the bottom mold, and the diameter of the through hole is greater than the diameter of the small contact lens.
4. A contact angle contact lens testing jig according to claim 2, characterized in that: The bearing mold is a pressing mold, and the pressing mold is provided with a spherical convex surface.
5. A contact angle contact lens testing jig according to claim 1, characterized in that: The right-angle frame and the base are integrally formed.
6. A contact angle contact lens testing jig according to claim 1, characterized in that: Two bracket assembly holes may be provided on the crossbeam of each right-angle frame.
7. The contact angle contact lens testing fixture according to claim 2, characterized in that: At least one pair of first magnet grooves are provided around the spherical groove, and the first magnet grooves are used to place the first magnets. At least one pair of second magnet grooves are provided around the spherical convex surface, and the second magnet grooves are used to place the second magnets. The first magnets can be magnetically attracted to each other.
8. A contact angle contact lens testing jig according to claim 2 or 3, characterized in that: The four corners of the bottom mold are respectively provided with bottom mold assembly holes, and the bottom mold installation holes penetrate through the upper and lower surfaces of the bottom mold.
9. A contact angle contact lens testing jig according to claim 2 or 4, characterized in that: The four corners of the die are respectively provided with die assembly holes, and the die assembly holes penetrate through the upper and lower surfaces of the bottom die.