Method for manufacturing optical devices, manufacturing apparatus for manufacturing optical devices, optical devices, and eyewear

Abstract

A method for manufacturing an optical device, a manufacturing apparatus for manufacturing an optical device, an optical device, and eyewear. The optical device includes a first optical element and a second optical element. The method includes arranging a plurality of layers on a support, each layer comprising the first optical element, a layer of compression-activated adhesive, and the second optical element in sequence. The layer of compression-activated adhesive is between the first optical element and the second optical element. The support includes spacers arranged around the plurality of layers. The spacers have a height greater than the height of the plurality of layers. The method also includes arranging a layer of elastic material covering the plurality of layers and the spacers, and compressing the plurality of layers to achieve compression of the compression-activated adhesive beyond a predetermined compression level.

Description

Technical Field

[0001] The present disclosure relates to a method for manufacturing an optical device, a manufacturing apparatus for manufacturing an optical device, an optical device, and eyewear including the optical device. The optical device is composed of two optical elements adhered to each other.

Background Art

[0002] According to some state-of-the-art bonding methods, the optical elements can be adhered to each other using a compression-activated adhesive. The compression-activated adhesive is between the two optical elements. To activate the adhesive, compression can be applied to one or both of the two optical elements.

[0003] With these state-of-the-art bonding methods, the compression can be non-uniform or very significant.

[0004] This non-uniform compression can lead to incomplete activation of the adhesive. Incomplete activation of the adhesive can lead to inaccurate optical properties of the optical device. This very significant compression can lead to deformation or breakage of one or both of the optical elements. Deformation can lead to inaccurate optical properties of the optical device.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The method according to the present disclosure enables two optical elements to be adhered to each other to form an optical device by avoiding the drawbacks described above.

Means for Solving the Problems

[0006] The following is a simplified overview to provide a basic understanding of the various aspects of this disclosure. This overview is not a comprehensive overview of all intended aspects, nor is it intended to identify the main or essential elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as an introduction to the more detailed descriptions that will be presented later.

[0007] One aspect of the present disclosure is a method for manufacturing an optical device. The optical device includes a first optical element and a second optical element. The method includes arranging a plurality of layers on a support, each layer comprising the first optical element, a layer of compression-activated adhesive, and the second optical element in sequence. The layer of compression-activated adhesive is located between the first optical element and the second optical element. The support includes spacers arranged around the plurality of layers. The spacers have a height greater than the height of the plurality of layers. The method also includes arranging a layer of elastic material covering the plurality of layers and the spacers, and compressing the plurality of layers to achieve compression of the compression-activated adhesive beyond a predetermined compression level.

[0008] Furthermore, the manufacturing method of the present disclosure has the advantage of overcoming the lack of flatness of the surface of the first or second optical element, reducing the risk of damage to the first and / or second optical element, and obtaining a better boundary of the optical element.

[0009] Another aspect of the present disclosure is a manufacturing apparatus. The manufacturing apparatus includes a support containing spacers and a compression means. The manufacturing apparatus is configured to manufacture an optical device. The optical device includes a first optical element and a second optical element. The manufacturing apparatus is configured to place a plurality of layers on the support, each layer containing the first optical element, a layer of compression-activated adhesive, and the second optical element in that order. The layer of compression-activated adhesive is located between the first optical element and the second optical element. Spacers are placed around the plurality of layers, and the spacers are taller than the height of the plurality of layers. The manufacturing apparatus is also configured to place a layer of elastic material covering the plurality of layers and the spacers, and to use the compression means to compress the plurality of layers to achieve compression of the compression-activated adhesive beyond a predetermined compression level.

[0010] Another aspect of the present disclosure is an optical device. The optical device includes a first optical element and a second optical element. The first optical element and the second optical element are bonded to each other. The optical device is formed by arranging a plurality of layers on a support, each layer comprising the first optical element, a layer of compression-activated adhesive, and the second optical element in sequence. The layer of compression-activated adhesive is between the first optical element and the second optical element. The support includes spacers arranged around the plurality of layers. The spacers have a height greater than the height of the plurality of layers. The optical device is also formed by arranging a layer of elastic material covering the plurality of layers and the spacers, and by compressing the plurality of layers to achieve compression of the compression-activated adhesive beyond a predetermined compression level.

[0011] Another aspect of the present disclosure is eyewear. The eyewear includes an optical device. The optical device includes a first optical element and a second optical element. The first optical element and the second optical element are bonded to each other. The optical device is formed by arranging a plurality of layers on a support, each layer comprising the first optical element, a layer of compression-activated adhesive, and the second optical element in sequence. The layer of compression-activated adhesive is between the first optical element and the second optical element. The support includes spacers arranged around the plurality of layers. The spacers have a height greater than the height of the plurality of layers. The optical device is also formed by arranging a layer of elastic material covering the plurality of layers and the spacers, and by compressing the plurality of layers to achieve compression of the compression-activated adhesive beyond a predetermined compression level.

[0012] A computer may include memory and a processor. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, discrete hardware circuits, and other suitable hardware configured to perform various functions described throughout this disclosure. Memory may be computer-readable media. Examples, but not limited to, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage devices, magnetic disk storage devices, other magnetic storage devices, combinations of the computer-readable media of the types described above, or any other media that can be used to store computer executable code in the form of instructions or data structures that can be accessed by the computer's processor.

[0013] Another aspect of the present disclosure is a non-temporary program storage device that is computer-readable and tangibly embodies a program of computer-executable instructions for carrying out a method for manufacturing an optical element.

[0014] All embodiments of the computing module described can be applied individually or in combination to non-temporary program storage devices.

[0015] To gain a more detailed understanding of the descriptions and advantages provided herein, refer hereto to the following brief description, which will be interpreted in relation to the accompanying drawings and detailed description, where similar reference numbers represent similar parts. [Brief explanation of the drawing]

[0016] [Figure 1] This is a diagram representing the first element of a manufacturing apparatus for producing optical devices. [Figure 2a] This diagram shows the second element of a manufacturing apparatus for producing optical devices. [Figure 2b] This diagram shows the second element of a manufacturing apparatus for producing optical devices. [Figure 3] This is a diagram illustrating a method for manufacturing optical devices. [Figure 4] This is a diagram representing the compensation module. [Figure 5] This is a diagram showing multiple layers and spacers. [Figure 6] This is another diagram showing multiple layers and spacers. [Modes for carrying out the invention]

[0017] The detailed description set forth below in connection with the accompanying drawings is intended as a description of various possible embodiments and is not intended to represent the only embodiments in which the concepts described herein can be implemented. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to one of ordinary skill in the art that the concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

[0018] Description of a manufacturing apparatus for manufacturing an optical device FIG. 1, FIGS. 2a and 2b represent different elements of a manufacturing apparatus 101. This manufacturing apparatus 101 can be configured to manufacture an optical device.

[0019] The optical device can be intended to be incorporated into eyewear or glasses. The eyewear or glasses can be intended to be worn by a wearer, and the optical device can be adapted to the prescription of the wearer.

[0020] The optical device can include a first optical element and a second optical element.

[0021] The first optical element and the second optical element are · passive optical elements and · active optical elements can be selected from among.

[0022] In multiple embodiments, one of the first optical element and the second optical element is an active optical element and the other is a passive optical element. In other embodiments, the first optical element and the second optical element are active optical elements. In other embodiments, the first optical element and the second optical element are passive optical elements.

[0023] A passive optical element means an optical element whose value of a parameter of the function of the element may not be modified.

[0024] The non-active optical element may be an optical lens or an optical wafer. The optical wafer may have a thickness of about 0.5 mm.

[0025] An active optical element refers to an optical element whose functional parameter values ​​can be modified. These parameter values ​​can be modified by applying a signal, such as an electrical signal, to the terminals of the active optical element. This function is as follows: • Transmittance level of active optical elements, • The color of the active optical element, · The reflectance level of the active optical element, and • Polarization parameters of the active optical element, for example, the polarization angle of the active optical element. • Refractive power of active optical elements, • Elements displayed by active optical elements It could be one of the following. The element can be an image, a symbol, a character, or text.

[0026] An active optical element may be an electrochromic lens, a photochromic lens, a liquid crystal lens, a lens with variable refractive power, or a lens configured to display an element. To display an element, the active optical element may include an optical combiner, such as a photo-optical element (LOE). The active optical element may also be an optical wafer from which the values ​​of functional parameters can be modified.

[0027] Non-active optical elements can be made from organic materials. Active optical elements can be made from inorganic materials. Inorganic materials may be harder than organic materials and may be more prone to breakage. Furthermore, the method of this disclosure has the advantage of reducing the risk of damaging optical elements made from inorganic materials compared to state-of-the-art methods.

[0028] The method of this disclosure may be useful when one of two optical elements is an active optical element that has been deprived of the refractive power suited to the wearer's optical prescription. In this case, it is possible to obtain an optical device having refractive power suited to the wearer's optical prescription by defining the boundary of at least one ophthalmic lens or at least one wafer having refractive power suited to the wearer's optical prescription relative to the active optical element.

[0029] The manufacturing apparatus 101 may include a compression means 101-a, which may be something like the roll-to-roll stacking module in Figure 1. In other embodiments, the compression means 101-a may be a press, such as a hydraulic press, or a stamp.

[0030] As shown in Figure 2a, the manufacturing apparatus 101 may also include a support 102 and a spacer 103. In the example in Figure 2a, the support 102 and spacer 103 are a single block and form a jig. In other embodiments, the support 102 and spacer 103 may be separate elements. Figure 2b shows another example of a single-block support 102 and spacer 103.

[0031] The embodiments of the support 102 and spacer 103 shown in Figure 2a are merely examples, and other shapes of the support 102 and spacer 103 are also possible. Advantageously, the shape of the spacer 103 may follow a general shape of multiple layers.

[0032] The support 102 may be made entirely of polytetrafluoroethylene (PTFE) or may include an outer layer made of polytetrafluoroethylene (PTFE). The use of polytetrafluoroethylene (PTFE) makes it possible to make the support 102 flat and to avoid elements placed on the support adhering to the support.

[0033] As shown in Figures 2a and 2b, when the support 102 and space 103 are a single block and form a jig, this jig can be machined using a three-dimensional numerically controlled machine tool (also known as computer numerical control, commonly referred to as CNC).

[0034] The height of the spacer 103 or the height of the jig, in comparison to the recesses that receive the first and second optical elements, is selected according to the combined height of the first and second optical elements.

[0035] The manufacturing apparatus 101 may also include positioning means configured to position the first optical element and the second optical element on a support.

[0036] The positioning means may be, for example, an industrial robot including a robotic arm. The robotic arm may have at least two fingers at one of its ends that are capable of grasping, moving, and releasing different elements to be placed on a support.

[0037] In other embodiments, the robotic arm may have a suction cup at one of its tips that can grasp, move, and release different elements to be placed on a support.

[0038] In the embodiment, the manufacturing apparatus 101 may also include a conveyor, such as a belt conveyor, for moving the support 102, optical element and spacer 103 toward a position suitable for compression by the compression means 101-a.

[0039] The manufacturing apparatus 101 may also include a control module. The control module may be configured to control the compression means and, optionally, the positioning means and the conveyor.

[0040] The control module may include memory and a processor.

[0041] Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure.

[0042] Memory can be a computer-readable medium. For example, and not limited to, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage devices, magnetic disk storage devices, other magnetic storage devices, combinations of the above types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by the processor of a computing module.

[0043] The control module may be included in a separate module, such as a smartphone or computer, a system-on-a-chip (SoC), or a graphics processing unit (GPU). The computing module may also be a virtual machine located on a cloud network or a server not in the same location as the manufacturing equipment 101.

[0044] The use of control modules may offer advantages such as enabling the partially or fully automated manufacturing of optical devices and obtaining more accurate optical devices (meaning that the optical device adheres more precisely to the expected specifications).

[0045] Description of a method for manufacturing optical devices. The method for manufacturing an optical device is schematically represented in Figure 3. Figures 4, 5, and 6, described later, show different elements used in manufacturing the optical device. The method for manufacturing an optical device is: · ○A first layer 501 formed of a first elastic material, ○ The first optical element 402, 〇A layer 503 of compression-activated adhesive, ○ Second optical element 502 and Step 301 includes arranging multiple layers containing in order on a support 102, The compression-activated adhesive layer 503 is located between the first optical element 402 and the second optical element 502. The method is, Step 302 involves arranging a second layer 601 made of a second elastic material that covers multiple layers and spacers 103, The process includes step 303, which involves using the compression means 101-a of the manufacturing apparatus 101 to compress multiple layers and achieve compression of the compression-activated adhesive 503 beyond a predetermined compression level.

[0046] As explained earlier, the support 102 includes spacers 103 positioned around multiple layers. The spacers 103 have a height exceeding the height of the multiple layers. The height of the multiple layers is calculated when the layers are stacked on top of each other. The spacers 103 may be pre-selected so that their height exceeds the height of the multiple layers. When the support 102 and spacers 103 are a single block and form a jig, a suitable jig can be selected from a plurality of jigs, each having recesses of different heights intended to accommodate the multiple layers.

[0047] Using this method, an optical device can be realized that includes a first optical element 402 and a second optical element 502 bonded to each other.

[0048] In other embodiments, three or more optical elements, for example, three, four, five, six, or even more optical elements, may be connected to one another. For example, Figures 5 and 6, described later in this disclosure, illustrate an embodiment in which three optical elements are bonded to one another. When three or more optical elements are bonded to one another, the method in Figure 3 is identical, except that the multiple layers include N optical elements and N-1 layers of compression-activated adhesive. The layers of compression-activated adhesive may be placed between each pair of optical elements.

[0049] In this embodiment, the height of the spacer 103 can be selected according to the thickness of the second layer 601 and the type of the second elastic material.

[0050] In this embodiment, the second elastic material may be an elastomer, such as silicone (polysiloxane).

[0051] In this embodiment, the second elastic material may have a Shore hardness of A10 to A90.

[0052] In the embodiment, the first elastic material is selected to avoid rolling of the optical element and to avoid damage to the optical element during compression. The first elastic material may be polymethyl methacrylate (PMMA), which the inventors have surprisingly found to be excellent in preventing the aforementioned rolling and damage. By using polymethyl methacrylate, it is also possible to evaluate the appearance control of the adhesion, which is easier to achieve.

[0053] In this embodiment, the height of the spacer 103 can be selected to allow for precise compression of the compression-activated adhesive without damaging the first or second optical element, based on the difference between the height of the spacer 103 and the heights of the multiple layers.

[0054] In this embodiment, the difference between the height of the spacer 103 and the heights of the multiple layers may be 50 μm to 400 μm, or more precisely, 80 μm to 400 μm.

[0055] By using the second layer 601, it is possible to widen the range of differences that allow optical elements to bond to each other without damaging one of the optical elements. If the second layer 601 is not present, the range of differences that allows bonding without damage is limited to 50 μm to 80 μm.

[0056] In this embodiment, the spacer 103 may be parallel to the longitudinal axis of the first optical element 402 or the longitudinal axis of the second optical element 502.

[0057] In the embodiment, compression can be achieved by a roll-to-roll stacking module of the manufacturing apparatus.

[0058] In some embodiments, compression can be achieved by a press in a manufacturing apparatus. This press may be a hydraulic press.

[0059] In this embodiment, compression can be achieved by a stamp in the manufacturing apparatus.

[0060] In embodiments, if the surface of the first optical element 402 facing the first layer 501 is not planar, or if the surface of the second optical element 502 facing the second layer 601 is not planar, the method may include the step of adding a compensation module 401 between the first layer 501 and the first optical element 402, or between the second optical element 502 and the second layer 601.

[0061] The compensation module 401 may be a substantially flat element, the first surface of the compensation module 401 may be planar, and the second surface may have a shape that is linked to the shape of the non-planar surface of the first optical element 402 or the shape of the non-planar surface of the second optical element 502.

[0062] Figure 4 shows such a compensation module 401 when positioned relative to the first optical element 402. As previously described in embodiments not shown in Figure 4, the compression module 401 may be positioned relative to a second optical element 502 with multiple layers. In embodiments, two compensation modules may be used if both the first optical element 402 and the second optical element 502 include non-planar surfaces. One of the two compensation modules may face the non-planar surface of the first optical element 402, and the other of the two compensation modules may face the non-planar surface of the second optical element 502.

[0063] In the embodiment, the method can be implemented by one or more operators.

[0064] In embodiments, the method may be implemented partially or fully automatically, in which case the control module of the manufacturing apparatus 101 may be configured to control the positioning means and the compression means 101-a for manufacturing the optical apparatus.

[0065] In other words, when the method shown in Figure 3 is implemented by an operator, the operator can achieve the following steps: - A step of cleaning the first optical element 402 and the second optical element 502, more precisely, the surfaces of the first optical element 402 and the surfaces of the second optical element 502 that face each other. - A step of depositing a layer 503 of compression-activated adhesive on the first optical element 402 or the second optical element 502. If only one of the optical elements is made of an inorganic material, the layer of compression-activated adhesive may be advantageously deposited on this optical element. In embodiments, one of the optical elements may be pre-recovered by the layer of compression-activated adhesive. If necessary, any excess adhesive may be removed. - The step of placing one of the optical elements on a support is advantageous, wherein the optical element made of an inorganic material is placed on the support. - A step of placing one optical element on top of another optical element that is already placed on a support. - A step of adding a layer of elastic material on top of the two optical elements. - A step of compressing the two optical elements and the layer of elastic material. The compression step can be achieved using compression means 101-a. - An optional step to control the quality of the optical device by implementing optical control and appearance control. During appearance control, it is possible to control the absence of dirt in the central region of the optical device. The edges of the optical device may contain vibrations that can be removed during a later cutting step. Optical control (e.g., using a focal rangefinder) and appearance control by arc lamp can be performed. - An optional step of removing air bubbles between the first and second optical elements. This step can be achieved by placing the optical apparatus in an autoclave at 50°C for 20 minutes. This step also improves the quality of the adhesion.

[0066] Figure 5 shows a diagram of multiple layers and spacers 103. A first layer 501, formed of a first elastic material, may be placed on a support 102. A first optical element 402 may be placed on the first layer 501. A second optical element 502 may be placed on the first optical element 501. A layer 503 of compression-activated adhesive is located between the first optical element 402 and the second optical element 502. In Figure 5, a third optical element 504 is bonded to the second optical element 502. To achieve this, a further layer 505 of compression-activated adhesive may be added. The further layer 505 of compression-activated adhesive is located between the second optical element 502 and the third optical element 504.

[0067] Advantageously, as shown in Figure 5, the difference between the heights 506 of the multiple layers and the height 507 of the spacer 103 is denoted as d.

[0068] Figure 6 shows the position of the second layer 601 formed of the second elastic material. During the compression step 303, the compression means 101-a may be supported by the second layer 601 to achieve compression of the first optical element 402 and the second optical element 502. Figure 6 also shows a third optical element 504 and a further layer 505 of compression-activated adhesive. However, these two elements are optional and are not included in other embodiments.

[0069] In this embodiment, layer 501 and / or layer 601 may consist of a plurality of layers aggregated together. [Explanation of symbols]

[0070] 101 Manufacturing equipment 102 Support 103 Spacer 401 Compensation Module 401 Compression Module 402 First optical element 403 Compensation Module 501 First Layer 502 Second optical element 503 Compression-activated adhesive layer 504 Third optical element 505 Further layer of compression-activated adhesive 601 Second Layer 602 Second optical element

Claims

1. A method for manufacturing an optical device, wherein the optical device includes a first optical element (402) and a second optical element (502), and the method is The first optical element (402) and, A layer of compression-activated adhesive (503), The second optical element (502) and, This includes arranging (301) multiple layers containing in order on a support (102), The layer (503) of the compression-activated adhesive is located between the first optical element (402) and the second optical element (502). The support (102) includes spacers (103) arranged around the plurality of layers, and the spacers (103) have a height exceeding the height of the plurality of layers. The aforementioned method also, Arranging (302) a layer (601) of elastic material that covers the plurality of layers and the spacer (103), Compressing the plurality of layers to achieve compression of the compression-activated adhesive that exceeds a predetermined compression level (303), Methods that include...

2. The method according to claim 1, wherein the layer (601) of the elastic material is made of an elastomer, for example, silicone.

3. The method according to claim 1, wherein the layer (601) of the elastic material has a hardness of Shore A10 to A90.

4. The aforementioned method also, The method according to any one of claims 1 to 3, comprising selecting the height of the spacer (103) according to the thickness of the layer (601) of the elastic material and / or according to the type of elastic material.

5. The method according to any one of claims 1 to 4, wherein the spacer (103) is parallel to the longitudinal axis of the first optical element (402) or the longitudinal axis of the second optical element (502).

6. The method according to any one of claims 1 to 5, wherein the spacer (103) and the support (102) are a single block.

7. The method according to claim 6, wherein the spacer (103) and the support (102) form a jig with respect to each other.

8. This is achieved by the aforementioned compression (303) roll-to-roll stacking machine, or The compression (303) is achieved by a press, for example, a hydraulic press, or The compression (303) is achieved by a stamp, according to any one of claims 1 to 7.

9. The first optical element (402) and the second optical element (502) are, Non-active optical elements, and Active optical elements The method according to any one of claims 1 to 8, selected from among them.

10. The method also includes adding a compensation module (403) between the support (102) and the first optical element (402) or between the second optical element (502) and the layer (601) of the elastic material if the surface of the first optical element (402) facing the support (102) is not planar, or the surface of the second optical element (502) facing the layer (601) of the elastic material is not planar. The compensation module (403) is a substantially flat element, The first surface of the compensation module (403) is a plane, The method according to any one of claims 1 to 9, wherein the second surface of the compensation module (403) has a shape that is linked to the shape of the non-planar surface of the first optical element (502) or the shape of the non-planar surface of the second optical element (602).

11. The method according to any one of claims 1 to 10, wherein the height of the spacer (103) is selected such that the difference between the height of the spacer (103) and the heights of the plurality of layers allows for precise compression of the compression-activated adhesive without damaging the first optical element (402) or the second optical element (502).

12. The method according to any one of claims 1 to 10, wherein the difference between the height of the spacer (103) and the heights of the plurality of layers is 50 μm to 400 μm.

13. A support (102) including a spacer (103), Compression means (101-a), A manufacturing apparatus (101) including, The manufacturing apparatus (101) is configured to manufacture an optical device, the optical device includes a first optical element (402) and a second optical element (502), and the manufacturing apparatus (101) is configured to manufacture an optical device. The first optical element (402) and, A layer of compression-activated adhesive (503), The second optical element (502) and, Multiple layers containing the above in order are arranged on a support (102), The layer (503) of the compression-activated adhesive is located between the first optical element (402) and the second optical element (502). The spacer (103) is arranged around the plurality of layers, and the spacer (103) has a height that exceeds the height of the plurality of layers. The manufacturing apparatus (101) also includes, A layer (601) of elastic material is arranged to cover the plurality of layers and the spacer (103), A manufacturing apparatus (101) configured to use the compression means (101-a) to compress the plurality of layers and achieve compression of the compression-activated adhesive beyond a predetermined compression level.

14. An optical device comprising a first optical element (402) and a second optical element (502), wherein the first optical element (402) and the second optical element (502) are bonded to each other. The optical device is The first optical element (402) and, A layer of compression-activated adhesive (503), The second optical element (502) and, It is formed by arranging multiple layers containing in order on a support (102), The layer (503) of the compression-activated adhesive is located between the first optical element (402) and the second optical element (502). The support (102) includes spacers (103) arranged around the plurality of layers, and the spacers (103) have a height exceeding the height of the plurality of layers. The optical device also A layer (601) of elastic material is arranged to cover the plurality of layers and the spacer (103), To compress the plurality of layers to achieve compression of the compression-activated adhesive that exceeds a predetermined compression level, An optical device formed by [a specific mechanism / method].

15. Eyewear including an optical device, wherein the optical device is It includes a first optical element (402) and a second optical element (502), the first optical element (402) and the second optical element (502) being bonded to each other. The optical device is The first optical element (402) and, A layer of compression-activated adhesive (503), The second optical element (502) and, It is formed by arranging multiple layers containing in order on a support (102), The layer (503) of the compression-activated adhesive is located between the first optical element (402) and the second optical element (502). The support (102) includes spacers (103) arranged around the plurality of layers, and the spacers (103) have a height exceeding the height of the plurality of layers. The optical device also A layer (601) of elastic material is arranged to cover the plurality of layers and the spacer (103), To compress the plurality of layers to achieve compression of the compression-activated adhesive that exceeds a predetermined compression level, Eyewear formed by [this method].

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