Lens for selectively specular eyeglasses and method for implementing selectively specular lens
By applying selective specular reflection on both sides of the lens and forming the absorbing layer and reflecting layer using different processing techniques, the problem that existing lenses cannot provide three-dimensional or perspective effects is solved, and the effect of increasing the attractiveness of the glasses lens is achieved.
Patent Information
- Application Number
- CN202380052784.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-07-29
- Filing Date
- 2023-07-25
- Publication Date
- 2025-02-28
AI Technical Summary
Existing lenses are mirrored only on one side, and cannot provide three-dimensional or perspective effects, and cannot meet the market demand for eyeglasses that have increased attractiveness.
By applying selective specular reflection on both sides of the lens, different processing techniques on the convex and concave sides, such as physical vapor deposition (PVD) and pad printing techniques, are formed to achieve selective specular reflection on both sides.
The selective specular reflection on both sides of the lens is achieved, providing a three-dimensional or perspective image, increasing the attractiveness of the glasses lenses and meeting market demand.
Smart Images
Figure CN119547007A_ABST
Abstract
Description
[0001] The present invention relates to a lens for selectively mirrored spectacles.
[0002] More specifically, the invention relates to a lens for spectacles that envisages a selective specular reflection on both sides capable of providing a three-dimensional or perspective effect on the lens itself.
[0003] Selective specular reflection refers to specular reflection that is confined to precise areas or regions on the surface of the lens.
[0004] The present invention also relates to a method for achieving selectively specularly reflecting lenses.
[0005] In the following, lenses will refer to any type of lenses, corrective or non-corrective, and lenses of any shape, including mask shapes, and made of glass and / or plastic.
[0006] Lenses for selective specular reflection spectacles are already available on the market. However, the known lenses envisage specular reflection only on one side of the lens (mainly on the outside), whereby the image obtained by selective specular reflection on the lens is two-dimensional.
[0007] There is a demand in the market for eyeglass lenses with increased appeal and therefore also for mirror reflections with three-dimensional or see-through image effects.
[0008] Currently, no lenses exist that have this type of effect because the technology has not yet been developed to achieve this type of result.
[0009] In view of this need, the applicant has studied and implemented a product that can solve the market demand, obtain a lens with selective mirror reflection on both sides, and have a three-dimensional or perspective effect of the graphics that appear from the selective mirror reflection.
[0010] Applicants have also discovered and implemented a method for achieving a lens having selective specular reflection and having a three-dimensional or see-through effect.
[0011] These and other results are obtained according to the invention by a lens with selective specular reflection according to independent claim 1 .
[0012] Further features of the lens with selective specular reflection are specified in dependent claims 2-7.
[0013] In independent claim 8, a method for realizing a lens with selective specular reflection is described.
[0014] The invention will now be described for illustrative and non-limiting purposes according to a preferred embodiment of the invention, with particular reference to the figures in the accompanying drawings, in which:
[0015] Figure 1a-1d Some lenses with selective specular reflection on both sides according to the invention are shown as viewed in transmission;
[0016] Figure 2 shows a variant of a lens according to the invention with selective specular reflection on the convex side, observed in reflection; and
[0017] Figure 3 A variation of a lens with selective specular reflection on the concave side observed in reflection is shown.
[0018] Turning now to the figures of the accompanying drawings, and in particular to FIG. 1 , it can be seen that each spectacle lens, generally indicated by the reference numeral 10 , is conceived to have a convex side 20 and a concave side 30 .
[0019] After the selective specular reflection treatment according to the invention, a three-dimensional or see-through image, generally indicated by reference numeral 40, is observed on each lens 10 (see in particular FIG. 1 ). The see-through image is only visible when the lens is viewed in transmission.
[0020] Next, still referring to the figures in the accompanying drawings, a method for realizing a lens 10 having selective specular reflection on both sides is described.
[0021] As will become clear below, the solution according to the invention envisages applying a selective specular reflection on both faces of a lens 10 for spectacles.
[0022] As mentioned above, the lens 10 may be of any shape, made of glass and / or plastic material, and may also be vision corrective, as long as the perspective effect is outside the optical center.
[0023] In a preferred embodiment, the method according to the invention envisages the following steps:
[0024] 1. Prepare lens 10,
[0025] 2. Apply pad printing on the convex side 20 of the lens,
[0026] 3. Dry the coating applied in step 2,
[0027] 4. Apply pad printing on the concave side 30 of the lens,
[0028] 5. Dry the coating applied in step 4,
[0029] 6. Performing physical vapor deposition or PVD treatment on the concave side 30 of the lens 10,
[0030] 7. Performing physical vapor deposition or PVD treatment on the convex side 20 of the lens 10,
[0031] 8. Obtaining the final lens 10 subjected to the previous step for removing the pad printing coating.
[0032] In particular, it should be observed that the two concave sides 30 (step 6) and the convex side 20 (step 7) are treated differently from each other and therefore they cannot be reversed, since in this way, according to the invention, the desired three-dimensional or perspective effect described above is obtained on the lens 10.
[0033] In more detail, the PVD treatment on the concave side 30 consists in applying a series of layers or a multilayer structure consisting of:
[0034] - an absorption layer (also made of a precious metal, such as gold, white gold, rose gold, silver, titanium or chrome).
[0035] - Antireflective multilayer structures (eg composed of titanium oxide, zirconium oxide and silicon oxide).
[0036] The reflectivity of the internal treatment does not exceed 5% (so as not to cause disturbing reflections towards the eye of the wearer of the lens 10 ).
[0037] As for the processing on the convex side 20 according to step 7, it involves the application of dichroic mirrors (called specular reflections in the art) of the various colors.
[0038] In fact, the order in which steps (1, 2) and (3, 4) are performed can be reversed without affecting the final product.
[0039] Any removable solvent based pad printing ink can be used for pad printing.
[0040] Many other treatments may also be applied to the lens 10, such as, but not limited to, anti-reflective, specular, anti-fog or water-repellent, hydrophobic and / or oleophobic or anti-fouling, anti-scratch, anti-static treatments, and other treatments known in the art. These treatments may be applied on the convex side 20 and / or the concave side 30 of the lens 1.
[0041] The present invention has been described according to preferred embodiments thereof for purposes of illustration and not limitation, modifications may be made thereto by those skilled in the art without departing from the scope of protection defined in the appended claims.
Claims
1. A lens (10) for selective mirror reflection glasses, the lens having a convex side (20) and a concave side (30), wherein the selective mirror reflection is realized on both the convex side (20) and the concave side (30) of the lens (10), and the realization of the selective mirror reflection on both the convex side (20) and the concave side (30) of the lens (10) realizes an image (40) with a three-dimensional or perspective effect on the lens (10) itself.
2. The lens (10) according to claim 1, wherein: The concave side (30) of the lens is processed first and then the convex side (20) of the lens is processed.
3. The lens (10) according to claim 2, wherein: A physical vapor deposition or PVD process is performed on at least one of the concave side (30) or the convex side (20).
4. The lens (10) according to claim 2, wherein: A physical vapor deposition or PVD process is performed on both the concave side (30) or the convex side (20).
5. The lens (10) according to claim 3, wherein: The PVD treatment on the concave side (30) consists in applying a multilayer structure consisting of: - an absorber layer (also made of a noble metal), and -Anti-reflective multi-layer structure, The reflectivity of the treatment on the concave side (30) does not exceed 5% in order not to cause disturbing reflections towards the eye of the wearer of the lens (10).
6. The lens (10) according to claim 4, wherein: The absorption layer consists of a metal such as gold, white gold, rose gold, silver, titanium or chromium.
7. The lens (10) according to claim 4, wherein: The anti-reflection multilayer structure is composed of titanium oxide, zirconium oxide and silicon oxide.
8. The lens (10) according to claim 6, wherein: The PVD process envisages applying dichroic mirrors or specular reflections of various colors.
9. A method for obtaining a lens (10) for spectacles having selective specular reflection, said method envisaging the following steps:
1. preparing a lens (10), 2. applying pad printing on the convex side (20) of the lens, 3. Dry the coating applied in step 2, 4. applying pad printing on the concave side (30) of the lens, 5. Dry the coating applied in step 4, 6. Performing physical vapor deposition or PVD treatment on the concave side (30) of the lens (10), 7. Performing physical vapor deposition or PVD treatment on the convex side (20) of the lens (10), 8. Obtaining the final lens (10) subjected to the previous step for removing the pad printing coating, The step 2 and the step 4 can also be performed in reverse, that is, step 4 is performed first, and then step 2 is performed after step 3.
10. The method according to claim 8, wherein: The PVD treatment on the concave side (30) consists in applying a multilayer structure consisting of: - an absorbing layer (composed of metal), and -Anti-reflective multi-layer structure, The reflectivity of the concave side (30) of the lens does not exceed 5%.
11. The method according to claim 9, wherein: The absorption layer consists of a metal such as gold, white gold, rose gold, silver, titanium or chromium.
12. The method according to claim 9, wherein: The anti-reflection multilayer structure is composed of titanium oxide, zirconium oxide and silicon oxide.
13. The method according to claim 8, wherein: The treatment on the convex side (20) envisages applying dichroic mirrors or specular reflections of the various colors.
14. The method according to any one of claims 8 to 10, wherein: Any removable solvent based pad printing ink can be used for pad printing.