Double-layer lens capable of eliminating bright line of glued lens
By designing the special structure of the first lens and the second lens and adjusting the refractive angle of the light, the bright line problem caused by the glue at the glue joint of the double-layer lens is solved, and a high-yield lens production is achieved.
Patent Information
- Application Number
- CN202422526295.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The existing double-layer lenses contain a large amount of glue at the glued joint, resulting in a high defect rate of bright lines in the glued joint and cannot be processed in batches.
By designing a special structure between the first lens and the second lens, including an adhesive groove composed of the first lens groove and the arc surface of the second lens, the light refractive angle is adjusted, so that the glue is dry and transparent when irradiated, avoid falling off during sponge, and eliminate bright lines.
The glue at the glue joint is dry and transparent, and the refractive index of light changes slightly, eliminating the influence of bright lines, improving the transparency and yield of the lens, and suitable for mass production.
Smart Images
Figure CN223123334U_ABST
Abstract
Description
Technical Field
[0002] The utility model relates to the technical field of lens processing, in particular to a double-layer lens capable of eliminating bright lines of glued lenses.
Background Art
[0004] The double-layer lens makes the astigmatic points on the retina fall on the correct position by changing the incident angle and focusing position of light, thereby improving eyesight. The double-layer lens for glasses is a composite lens formed by hot-pressing two thin lenses together. The double-layer lens can effectively filter ultraviolet rays, thereby reducing the harm to the eyes. The double-layer lens is hot-pressed and formed in the center of the lens, which can effectively reduce reflection and increase transparency. Even in strong light, the glasses can see more clearly. In the existing technology for processing double-layer lenses, there is a large amount of glue hidden at the glued joint between the small lens and the large lens, resulting in the glue not being completely dry when irradiated, and the glue at the glued joint is easily washed away during the soaking process, making the glued joint between the double-layer lenses exposed to the air. When light irradiates, the refractive index of air and the lens is different, generating bright lines. The defective rate of bright lines is too high, resulting in a high rate of defective products and unable to be processed in batches.
Content of the Utility Model
[0006] To overcome the problem of a large amount of glue hidden at the glued joint between the small lens and the large lens and a too high defective rate of bright lines at the glued joint, the technical problem to be solved by the utility model is to provide a double-layer lens capable of eliminating bright lines of glued lenses. The utility model is realized by the following technical solutions:
[0007] A double-layer lens capable of eliminating bright lines of glued lenses, including a first lens for adjusting the refraction angle of light, the first lens is connected with a second lens that secondarily adjusts the refraction angle of light passing through the first lens so that the light focus falls on the correct position. The second lens is provided with a second lens arc surface that can be adhesively connected to the first lens. The first lens is provided with a first lens groove that cooperates with the second lens arc surface. The outer periphery of the first lens groove opening is provided with a first straight surface. The second lens arc surface extends out of the first lens groove and intersects with the first straight surface to form an adhesive groove for preventing glue from coming off during the soaking process.
[0008] For the double-layer lens capable of eliminating bright lines of glued lenses as described above, the diameter of the first lens groove opening is d1, the outermost diameter of the second lens arc surface is d2, and the axial distance of the adhesive groove along the length of the second lens is h3. h3 is half of the difference between d2 and d1, and the length ratio of d1 to h3 is 37 - 200.
[0009] For the double-layer lens capable of eliminating bright lines of glued lenses as described above, the length ratio of the diameter d1 of the first lens groove opening to the axial distance h3 of the adhesive groove along the length of the second lens is 37 - 90.
[0010] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the ratio of the diameter d1 of the notch of the first lens groove to the axial distance h3 along the length of the second lens of the bonding groove is 91-110.
[0011] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the ratio of the diameter d1 of the notch of the first lens groove to the axial distance h3 along the length of the second lens of the bonding groove is 111-200.
[0012] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the ratio of the diameter d1 of the notch of the first lens groove to the axial distance h3 along the length of the second lens of the bonding groove is 102.
[0013] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the outermost diameter d2 of the arc surface of the second lens is 20.8 mm, the diameter d1 of the notch of the first lens groove is 20.4 mm, and the axial distance h3 of the bonding groove along the length of the second lens is 0.2 mm.
[0014] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the axial distance of the bonding groove along the width of the first lens is h4, and the range of the h4 distance is 0.15 mm to 0.5 mm.
[0015] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the axial distance h4 of the bonding groove along the width of the first lens ranges from 0.15 mm to 0.3 mm.
[0016] A double-layer lens capable of eliminating bright lines on glued lenses as described above, wherein the outer diameter of the first lens is 24 mm.
[0017] Compared with the prior art, the present utility model has the following advantages:
[0018] 1. By adjusting the outer diameter dimension structure of the lens, the glue at the glued joint of the double-layer lens dries out when irradiated, and the glue at the glued joint is not washed away during the bubble glue process. When light passes through the lens and then through the glue medium, the refractive index changes slightly, but it does not affect the path of light passing through the double-layer lens and the glue at the glued joint, eliminating the influence of the bright line of the lens on the visual perception. The bright line yield is qualified, and the lens can be processed in large quantities.
[0019] 2. Design the axial distance of the bonding groove along the length of the second lens to be 0.2 mm to ensure that the light transmittance after the combination of the first lens and the second lens is not affected by the change of the size of the second lens during processing, and the light transmittance performance on the side of the lens is not decreased, and the structural quality at the glued joint is stable, and the corners are not easily damaged.
[0020] 3. After changing the outer diameter dimension structure of the lens, the glue at the glued joint is easily dried by irradiation, which speeds up the production demand.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below.
[0023] Figure 1 Front view schematic after eliminating the bright line of a glued lens, which is one of the present utility model Figure 1 ;
[0024] Figure 2 Magnified schematic of double-layer lens A after eliminating the bright line of a glued lens, which is one of the present utility model Figure 2 ;
[0025] Figure 3 Magnified schematic of double-layer lens A after eliminating the bright line of a glued lens, which is one of the present utility model Figure 3 ;
[0026] Figure 4 Magnified schematic of double-layer lens A after eliminating the bright line of a glued lens, which is the fourth one of the present utility model
[0027] Figure 5 Schematic of double-layer lens before eliminating the bright line of a glued lens, which is one of the present utility model Figure 5 ;
[0028] Figure 6 Magnified schematic of double-layer lens B before eliminating the bright line of a glued lens, which is one of the present utility model Figure 6 .
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0031] Please refer to Figures 1 to 6, A double-layer lens capable of eliminating bright lines on glued lenses, including a first lens 1 for adjusting the light refraction angle. The first lens 1 is connected to a second lens 2 that secondarily adjusts the light refraction angle through the first lens 1 so that the light focus falls on the correct position. The second lens is provided with a second lens arc surface 21 that can be adhesively connected to the first lens 1. The first lens 1 is provided with a first lens groove 15 that cooperates with the second lens arc surface 21. The outer periphery of the notch of the first lens groove 15 is provided with a first straight surface 11. The second lens arc surface 21 extends out of the first lens groove 15 and intersects with the first straight surface 11 to form an adhesive groove 3. In the past, the glue in the adhesive groove caused bright lines due to the glue dropping during the glue soaking process when the glue was not dry. The different refractive indices caused by the light passing through different media of air and the lens medium, the light refracts when irradiating from the first lens to the air and then reflects when reaching the second lens, and the reflected light reflects on the first lens repeatedly to form bright lines. The bright line is a layer of white opaque white circle. By changing the structure of the adhesive groove, the bright lines are eliminated. After the glue is irradiated and dried, it is not dropped during the glue soaking process. The refractive index of the light passing through the first lens, the glue, and the second lens does not change significantly, and there is no reflection phenomenon, thus eliminating the existence of bright lines and increasing the transparency of the side of the lens, thereby optimizing the use experience of the lens.
[0032] Further, as a preferred implementation manner of this solution rather than a limitation, the diameter of the notch of the first lens groove 15 is d1, the outermost diameter of the arc surface of the second lens 2 is d2, and the axial distance of the adhesive groove 3 along the length of the second lens 2 is h3. h3 is half of the difference between d2 and d1, and the length ratio of d1 to h3 is 37 to 200. Setting the length ratio range of the outer diameter h1 of the first lens groove 15 and the axial distance h3 of the adhesive groove 3 along the length of the second lens 2 enables the glue in the adhesive groove to be dried after being irradiated by light and the glue does not detach from the adhesive groove after the glue soaking process.
[0033] Further, as a preferred implementation manner of this solution rather than a limitation, the length ratio of the diameter d1 of the notch of the first lens groove 15 to the axial distance h3 of the adhesive groove 3 along the length of the second lens 2 is 37 to 90. Within the length ratio range of 37 to 90, the glue in the adhesive groove can be dried after being irradiated by light and the glue does not detach from the adhesive groove after the glue soaking process, and the glue in the adhesive groove is in a normal adhesive state.
[0034] Further, as a preferred implementation manner of this solution rather than a limitation, the length ratio of the diameter d1 of the notch of the first lens groove 15 to the axial distance h3 of the adhesive groove 3 along the length of the second lens 2 is 91 to 110. The refractive index of the light passing through the first lens, the glue, and the second lens does not change significantly, and there is no reflection phenomenon, thus eliminating the existence of bright lines. It does not cause the light transmittance through the side of the double-layer lens to decrease due to the change in the size of the second lens after the combination of the first lens and the second lens, and it has no impact on the optical performance of the double-layer lens.
[0035] Further, as a preferred implementation manner rather than a limitation of this solution, the ratio of the notch diameter d1 of the first lens groove 15 to the length h3 of the bonding groove 3 along the axial direction of the length of the second lens 2 is 111 to 200. Within the range of the length ratio of 111 to 200, the glue in the bonding groove can still be retained in the bonding groove after foaming the glue. The small size of the bonding groove 3 affects the bonding connection between the first lens and the second lens.
[0036] Further, as a preferred implementation manner rather than a limitation of this solution, the ratio of the notch diameter d1 of the first lens groove 15 to the length h3 of the bonding groove 3 along the axial direction of the length of the second lens 2 is 102. The ratio of the notch diameter d1 of the first lens groove 15 to the length h3 of the bonding groove 3 along the axial direction of the length of the second lens 2 is 102. The outermost diameter d2 of the arc surface of the second lens 2 is 20.8 mm, the notch diameter d1 of the first lens groove 15 is 20.4 mm, and the distance h3 of the bonding groove 3 along the axial direction of the length of the second lens 2 is 0.2 mm. When the outer diameter of the arc surface of the second lens 2 along the axial direction of the length h2 of the second lens 2 is 20.8 mm, the glue in the bonding groove can remain in the bonding groove during the manufacturing process, and thus no light reflection phenomenon occurs in the bonding groove, eliminating the formation of bright lines. When the distance h3 is 0.2 mm, the combination of the first lens and the second lens does not cause the light transmittance through the side of the double-layer lens to decrease due to the change in the size of the second lens, and does not affect the optical performance of the double-layer lens, ensuring the quality of the product.
[0037] Further, as a preferred implementation manner rather than a limitation of this solution, the distance h4 of the bonding groove 3 along the axial direction of the width of the first lens 1 ranges from 0.15 mm to 0.5 mm. When the distance h4 ranges from 0.15 mm to 0.5 mm and the distance h3 is 0.2 mm, the glue is bonded in the bonding groove, and no light reflection phenomenon occurs after the light passes through the first lens, the glue, and the second lens, and thus no bright lines are formed. The adjustment of the size structure does not cause the light transmittance through the side of the double-layer lens to decrease due to the change in the size of the second lens after the combination of the first lens and the second lens, and does not affect the optical performance of the double-layer lens, ensuring the quality of the product.
[0038] Further, as a preferred implementation manner rather than a limitation of this solution, the outer diameter of the first lens 1 is 24 mm, which is customized to 24 mm according to product requirements.
[0039] Further, as a preferred implementation manner rather than a limitation of this solution, the first lens 1 is provided with a second vertical surface 13 perpendicular to the first straight surface 11 for abutting and supporting. The second lens 2 is provided with a third vertical surface 23 for abutting and supporting and connected to the arc surface of the second lens. The design of the second vertical surface 13 and the third vertical surface 23 increases the contact area between the lens and the support structure, which helps to improve the stability of the overall structure, especially it is not easy to shake or tilt during use.
[0040] The working principle of this embodiment is as follows:
[0041] A manufacturing process of a double-layer lens capable of eliminating bright lines of glued lenses, as Figure 1 shown, fix the first lens to the machine table, coaxially glue the second lens to the first lens. There is glue remaining in the bonding groove on the side of the second lens and the first lens. In the past, when the glue in the bonding groove was not dry and the soaking glue process was carried out, the dropped glue caused bright lines. The different refractive indexes caused by the light passing through different air media and lens media. The light is refracted when it irradiates from the first lens to the air and then reflected when it reaches the second lens. The reflected light is reflected on the first lens and reflected repeatedly to form bright lines. The bright line is a white opaque white circle. By changing the structure of the bonding groove, the bright lines are eliminated. After the glue is irradiated and dried, it is not dropped during the soaking glue process. The refractive index of the light passing through the first lens, the glue, and the second lens does not change significantly, and there is no reflection phenomenon, thus eliminating the existence of bright lines and increasing the transparency of the lens side, thereby optimizing the use experience of the lens.
[0042] The above are the implementation manners provided in combination with specific contents, and it is not considered that the specific implementation of this application is only limited to these descriptions. Any approximation to the method structure of this application or several technical deductions or replacements made under the premise of the concept of this application should be regarded as the protection scope of this application.
Claims
1. A double-layer lens capable of eliminating bright lines of glued lenses, characterized in that, It includes a first lens (1) for adjusting the light refraction angle. The first lens (1) is connected to a second lens (2) that further adjusts the light refraction angle through the first lens (1) so that the light focus falls on the correct position. The second lens is provided with a second lens arc surface (21) that can be adhesively connected to the first lens (1). The first lens (1) is provided with a first lens groove (15) that cooperates with the second lens arc surface (21). The outer periphery of the notch of the first lens groove (15) is provided with a first straight surface (11). The second lens arc surface (21) extends out of the first lens groove (15) and intersects with the first straight surface (11) to form an adhesive groove (3) that prevents de-bonding during glueing.
2. The double-layer lens capable of eliminating bright lines of a glued lens according to claim 1, wherein : The diameter of the notch of the first lens groove (15) is d1, the outermost diameter of the arc surface of the second lens (2) is d2, and the axial distance of the adhesive groove (3) along the length of the second lens (2) is h3. h3 is half of the difference between d2 and d1, and the length ratio of d1 to h3 is 37 to 200.
3. A double-layer lens capable of eliminating bright lines of glued lenses according to claim 2, characterized in that : The length ratio of the diameter of the notch of the first lens groove (15) (d1) to the axial distance (h3) of the adhesive groove (3) along the length of the second lens (2) is 37 to 90.
4. A double-layer lens capable of eliminating bright lines of glued lenses according to claim 2, characterized in that : The length ratio of the diameter of the notch of the first lens groove (15) (d1) to the axial distance (h3) of the adhesive groove (3) along the length of the second lens (2) is 91 to 110.
5. A double-layer lens capable of eliminating bright lines of glued lenses according to claim 2, characterized in that : The length ratio of the diameter of the notch of the first lens groove (15) (d1) to the axial distance (h3) of the adhesive groove (3) along the length of the second lens (2) is 111 to 200.
6. The double-layer lens capable of eliminating bright lines of glued lenses according to claim 4, characterized in that : The length ratio of the diameter of the notch of the first lens groove (15) (d1) to the axial distance (h3) of the adhesive groove (3) along the length of the second lens (2) is 102.
7. The double-layer lens capable of eliminating bright lines of a glued lens according to claim 6, characterized in that : The outermost diameter of the arc surface of the second lens (2) (d2) is 20.8 mm, the diameter of the notch of the first lens groove (15) (d1) is 20.4 mm, and the axial distance of the adhesive groove (3) along the length of the second lens (2) (h3) is 0.2 mm.
8. A double-layer lens capable of eliminating bright lines of glued lenses according to claim 2, characterized in that : The axial distance of the adhesive groove (3) along the width of the first lens (1) is h4, and the range of h4 is 0.15 mm to 0.5 mm.
9. The double-layer lens capable of eliminating bright lines of glued lenses according to claim 8, characterized in that : The range of the axial distance of the adhesive groove (3) along the width of the first lens (1) (h4) is 0.15 mm to 0.3 mm.
10. A double-layer lens capable of eliminating bright lines of glued lenses according to claim 7, characterized in that : The outer diameter of the first lens (1) is 24 mm.