CN118112694A - Lens film sticking device and optical film sticking method - Google Patents

Abstract

The present disclosure provides a lens film sticking device and a sticking method of an optical film. The lens film sticking device comprises a first jig for fixing an optical lens, a profiling piece opposite to the first jig, a first heater for heating the optical film, an optical sensor and a light emitting device. The profiling piece and the first jig can rotate relatively. One surface of the profiling piece, which is close to the first jig, is a bearing surface for placing the optical film. The shape of the bearing surface is matched with the shape of the optical lens. One of the light emitting device and the optical sensor is positioned on one side of the first jig, which is away from the profiling piece, and the other is positioned on one side of the profiling piece, which is away from the first jig. The profiling piece is provided with an alignment part opposite to the light emitting device and the optical sensor, and light rays emitted by the light emitting device pass through the optical lens, the optical film and the alignment part to the optical sensor. The lens film sticking device is used for shaping the optical film through the copying piece and then aligning with the optical lens, so that the alignment precision of the optical lens and the optical film can be improved.

Description

Lens film sticking device and optical film sticking method

Technical Field

The disclosure relates to the technical field of film laminating, in particular to a lens film laminating device and a laminating method of an optical film.

Background

As a common optical device, an optical lens is widely used in various optical devices. In order to improve the optical performance of an optical lens, it is often necessary to attach an optical film to the optical lens.

At present, the main modes of sticking the optical film on the optical lens are as follows: firstly, carrying out thermalization treatment on an optical film in a plane state; and then, optically aligning the optical film with the optical lens, and pressing the optical film on the optical lens in a vacuum pressing mode.

In the above-described method, the optical film and the optical lens are optically aligned before the optical film and the optical lens are bonded, but there is still a problem in that alignment deviation is large.

Disclosure of Invention

The disclosure provides a lens film sticking device and a sticking method of an optical film, which are used for solving the problem of large sticking alignment deviation between the optical film and the optical lens in the prior art.

In one aspect, the present disclosure provides a lens film attachment device comprising: the device comprises a first jig, a dummy, a first heater, an optical sensor and a light emitting device. The first heater is used for heating the optical film; the first jig is used for fixing the optical lens; the profile is opposite to the first jig, and the profile and the first jig are configured to be rotatable relative to each other. The surface of the profiling piece, which is close to the first jig, is a bearing surface, the appearance of the bearing surface is matched with the appearance of the optical lens, and the bearing surface is used for placing the optical film; one of the light emitting device and the optical sensor is positioned at one side of the first jig, which is away from the profiling piece, and the other one of the light emitting device and the optical sensor is positioned at one side of the profiling piece, which is away from the first jig; the profiling piece comprises an alignment part, wherein the alignment part is respectively opposite to the light emitting device and the optical sensor, so that light rays emitted by the light emitting device can pass through the optical lens, the optical film and the alignment part to the optical sensor. The profiling piece and the first jig relatively rotate according to the optical signals received by the optical sensor until the optical diaphragm and the optical lens are in optical alignment.

In the above embodiment, the first heater may heat the optical film to soften the optical film, so that the optical film may be attached to the bearing surface, and the optical film may have the same or similar appearance as the bearing surface. Further, after the optical film is formed, that is, the optical film is shaped into a curved shape matched with the optical lens, the light emitting device emits light, the optical sensor obtains the illumination intensity of the light passing through the optical lens, the optical film and the alignment part, and the first jig and/or the profiling piece is adjusted according to the illumination intensity of the light of the optical sensor, so that the curved optical film and the optical lens are aligned accurately. In the process of implementing the lamination of the optical film and the optical lens, the lens lamination device can firstly mold the optical film in a plane state into the curved film matched with the optical lens through the first heater and the profiling piece, and then optically align the curved optical film with the optical lens, thereby being beneficial to reducing the deformation of the optical film after the optical alignment with the optical lens, and further improving the optical alignment precision of the optical film and the optical lens.

On the other hand, the disclosure also provides a laminating method of the optical film. The attaching method of the optical film comprises the following steps:

Fixing the optical lens on the first jig;

heating the optical film by a first heater;

Attaching the optical film to the bearing surface of the profiling piece, wherein the shape of the bearing surface is matched with the shape of the optical lens;

acquiring illumination intensity passing through the optical lens and the optical film by an optical sensor;

According to the illumination intensity obtained by the optical sensor, controlling the profile modeling piece and the first jig to rotate relatively until the optical film and the optical lens are aligned;

And controlling the first jig and the profiling piece to move relatively until the optical film is attached to the optical lens.

In the bonding method of the optical film, the optical film is heated and formed into the curved optical film which is matched with the shape of the optical lens, and then the curved optical film and the optical lens are optically aligned, so that the deformation of the optical film and the optical lens after optical alignment can be reduced, further, the optical alignment deviation between the optical film and the optical lens caused by the deformation of the optical film is avoided, and the alignment precision between the optical film and the optical lens is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic illustration of a first heater heating an optical film in some alternative embodiments of the present disclosure;

FIG. 2 is a schematic diagram of an optical alignment of an optical film and an optical lens in a first alternative embodiment of the disclosure;

FIG. 3 is a schematic illustration of an optical film attached to an optical lens according to some alternative embodiments of the present disclosure;

FIG. 4 is a schematic view of a first fixture according to some alternative embodiments of the present disclosure;

FIG. 5 is a flow chart of a method for attaching an optical film according to a first alternative embodiment of the present disclosure;

FIG. 6 is a flow chart of a method for attaching an optical film according to a second alternative embodiment of the disclosure;

fig. 7 is a flow chart illustrating a method for attaching an optical film according to a third alternative embodiment of the disclosure.

Reference numerals illustrate: 10-an optical film; 11-an optical film; 12-a protective film; 13-an adhesive layer; 20-an optical lens; 21-a first sub-lens; 22-a second sub-lens; 100-a first jig; 110-limit grooves; 200-profiling; 210-bearing surface; 220-an alignment part; 221-light holes; 230-a light-transmitting member; 240-adsorption holes; 300-a first heater; 400-light emitting devices; 500-an optical sensor; 600-a second heater; 700-a first housing; 710—a first cavity; 720-a first suction port; 800-a second housing; 810-a second cavity; 820-a second suction port; 900-second jig.

Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

As described in the background art, in the related art, there is a problem that the alignment deviation of the optical film attached to the optical lens is large.

The inventor finds that the problem of large alignment deviation of the optical film attached to the optical lens in the related art is mainly two kinds of possibility. Firstly, the optical film is attached to the optical lens by firstly optically aligning the optical film in a planar state with the optical lens, and then attaching the optical film to the optical lens. Since the surface of the optical lens is entirely planar, e.g., convex, concave. Therefore, when the surface of the optical lens is convex or concave, the optical film deforms in the process from the completion of optical alignment to the attachment of the optical film to the optical lens, so that the corresponding optical parameters of the optical film are easily changed, and the optical alignment between the optical film and the optical lens is easily deviated.

Secondly, the optical lens has manufacturing errors in the manufacturing process, so that the diagonal position between curved surfaces cannot be accurately found, and larger alignment deviation occurs between the optical film and the optical lens.

Aiming at the technical problems, the embodiment of the disclosure provides a lens film sticking device. According to the lens film sticking device, the first heater is arranged, so that the optical film can be softened under the heating of the first heater, and the optical film is convenient to deform, so that a curved shape attached to the surface of the optical lens is formed. By arranging the profiling piece, the optical film is shaped conveniently, and the alignment part is arranged on the profiling piece, so that the optical film and the optical lens can be aligned under the condition that the optical film is placed on the profiling piece. That is, the lens film sticking apparatus of the present disclosure can perform optical alignment of the optical film and the optical lens in a case where the optical film is formed in a curved shape. Therefore, the deformation of the optical film after optical alignment with the optical lens can be reduced. Therefore, the lens film sticking device is beneficial to improving the alignment precision between the optical film and the optical lens so as to solve the problem of large optical alignment deviation between the optical film and the optical lens in the related technology.

The following describes the technical solutions of the present disclosure and how the technical solutions of the present disclosure solve the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present disclosure will be described below with reference to fig. 1 to 7.

Referring to fig. 1-3, in some alternative embodiments of the present disclosure, a lens film attachment apparatus includes a first jig 100, a dummy 200, a first heater 300, a light emitting device 400, and an optical sensor 500. Wherein the first heater 300 is used for heating the optical film 10. The first jig 100 is used for fixing the optical lens 20. The dummy 200 is opposite to the first jig 100, and the dummy 200 and the first jig 100 are configured to be rotatable relative to each other. The surface of the dummy mold 200 near the first fixture 100 is a carrying surface 210. The shape of the carrying surface 210 is matched with the shape of the optical lens 20, and the carrying surface 210 is used for placing the optical film 10.

In the above embodiment, the first heater 300 heats the planar optical film 10, so that the planar optical film 10 is softened after being heated, and thus the optical film 10 is shaped conveniently. Further, the topography of the bearing surface 210 of the dummy 200 is matched to the topography of the optical lens 20. Thus, the heated optical film 10 may be shaped by the bearing surface 210 of the dummy 200, so that the heated softened optical film 10 may form a curved shape that matches the shape of the optical lens 20. That is, the optical film 10 on the carrying surface 210 of the dummy 200 can be adhered to the surface of the optical lens 20 on the first fixture 100. As the corresponding surface topography features of different optical lenses 20 are different. For example, the surface of the convex lens is convex, and the surface of the concave lens is concave. For this reason, the present embodiment does not define the topographical features of the bearing surface 210.

Referring to fig. 2 and 3, as some alternative embodiments, one of the light emitting device 400 and the optical sensor 500 is located on a side of the first jig 100 facing away from the dummy 200, and the other is located on a side of the dummy 200 facing away from the first jig 100. Further alternatively, the dummy device 200 includes an alignment portion 220, and the alignment portion 220 is opposite to the light emitting device 400 and the optical sensor 500, respectively, so that the light emitted from the light emitting device 400 can reach the optical sensor 500 through the optical lens 20, the optical film 10, and the alignment portion 220. That is, in the present embodiment, the light emitted from the light emitting device 400 can pass through the optical lens 20, the optical film 10 and the alignment part 220 to the optical sensor 500.

In a further alternative embodiment, the dummy 200 and the first jig 100 are rotated relative to each other according to the optical signal received by the optical sensor 500 until the optical film 10 is optically aligned with the optical lens 20.

Illustratively, the light emitting device 400 may emit light to the optical sensor 500. Further optionally, it is determined whether the optical film 10 and the optical lens 20 are optically aligned according to the illumination information received by the optical sensor 500. In the case that there is a deviation in the optical alignment between the optical film 10 and the optical lens 20, the optical alignment between the optical film 10 and the optical lens 20 can be adjusted by controlling the relative rotation of the dummy 200 and the first jig 100 to further drive the relative rotation of the optical film 10 and the optical lens 20.

In the above embodiment, the alignment portion 220 is disposed on the dummy 200, so that the light can pass through the dummy 200 from the alignment portion 220. Thus, optical alignment can be performed with the optical film 10 and the optical lens 20 with the optical film 10 on the dummy 200.

As an alternative embodiment, during the process of attaching the optical film 10 to the optical lens 20, the first heater 300 may be used to heat the optical film 10 in a planar state, so as to soften the optical film 10, and then the softened optical film 10 is placed on the bearing surface 210 of the dummy 200, so that the softened optical film 10 may be deformed and attached to the bearing surface 210, and further the shape of the optical film 10 may be adapted to the optical lens 20, that is, the shape of the optical film 10 is curved.

Specifically, the shape of the optical film 10 may be adapted to the optical lens 20: the surface of the optical film 10 away from the dummy 200 is adapted to the surface of the first jig 100 near the dummy 200, so that the surface of the optical film 10 away from the dummy 200 can be bonded to the surface of the first jig 100 near the dummy 200.

After the heated optical film 10 is placed on the bearing surface 210 for shaping, the light emitting device 400 emits light to the optical sensor 500, and adjusts the relative positions of the first jig 100 and the dummy pattern 200 according to the illumination information received by the optical sensor 500, so that the optical film 10 on the dummy pattern 200 and the optical lens 20 on the first jig 100 realize optical alignment.

There are many ways to adjust the relative positions of the first jig 100 and the dummy 200. For example: rotating at least one of the first jig 100 and/or the dummy 200 to adjust the relative positions of the first jig 100 and the dummy 200; and/or moving at least one of the first jig 100 and/or the dummy 200 adjusts the relative position of the first jig 100 and the dummy 200.

The lens film sticking device provided in the above embodiment may firstly shape the optical film 10, so that the optical film 10 is curved to adapt to the optical lens 20. Then, optical alignment is performed on the curved optical film 10 and the optical lens 20, so that the deformation of the optical film 10 after alignment with the optical lens 20 can be reduced. Therefore, the lens film sticking device is beneficial to reducing the influence of the deformation amount of the optical film 10 on the optical alignment precision between the optical lens 20 and the optical film 10, improving the alignment precision after the optical film 10 is stuck to the optical lens 20, and reducing the optical alignment deviation after the optical film 10 is stuck to the optical lens 20.

In some alternative embodiments, the relative positions of the first jig 100 and the dummy 200 may be manually adjusted, and the relative positions of the first jig 100 and the dummy 200 may also be adjusted by a driving mechanism. Optionally, the lens film sticking device further includes a second driving member, where at least one of the first jig 100 and the dummy 200 is connected to the second driving member, so that the second driving member can be used to drive the first jig 100 and the dummy 200 to rotate or move relatively. Illustratively, the second driving member is of a wide variety, such as: a motor and a mechanical arm. For this reason, the present embodiment is not limited to a specific kind of the second driving member.

In some alternative implementations, the optical element formed after the optical lens 20 and the optical film 10 described in the present disclosure are attached to various types of optical devices. For example: augmented Reality (Augmented Reality, AR) glasses, virtual Reality (VR) glasses, cell phones, tablets, cameras, etc.

By way of example, the optical film 10 described in the present disclosure may be any type of optical film. In particular, the optical film 10 described in the present disclosure may be an optical film having an optical axis. For example: reflective polarizing film, quarter wave plate, half wave plate. Of course, the optical film 10 described in the present disclosure may also be an antireflection film, a scratch-resistant film, an antifogging film, or the like.

The film sticking device is used for sticking the optical film 10 on the optical lens 20, and can correspondingly improve the optical performance and/or mechanical performance of an optical element formed after the optical lens 20 is stuck to the optical film 10.

In some alternative embodiments, the first heater 300 may be an infrared light heater, thereby facilitating simultaneous heating of the interior and exterior of the optical film 10. In addition, the infrared heater can avoid the contact between the infrared heater and the heated device in the process of heating the heated device. Therefore, in this embodiment, the first heater 300 is an infrared heater, so that the first heater 300 can be prevented from contacting the optical film 10, and further friction between the first heater 300 and the optical film 10 can be avoided, which is beneficial to preventing the optical film 10 from being scratched by the first heater 300.

As shown in fig. 1, the first heater 300 may be an infrared light heating plate. In the process of heating the optical film 10 by the first heater 300, the first heater 300 may be parallel to the optical film 10, thereby being beneficial to uniformly heating the optical film 10 everywhere, and further being beneficial to preventing the optical film 10 from being deformed due to uneven heating, so as to avoid affecting the optical performance of the optical film 10.

Referring to fig. 1, in some alternative embodiments, the lens film attachment device further comprises a second jig 900. Optionally, the second fixture 900 may be used to fix the optical film 10. Specifically, the second fixture 900 may be opposite to the first heater 300, so that the first heater 300 may heat the optical film 10 on the second fixture 900.

In some alternative embodiments, the second jig 900 may be a clamping mechanism. Optionally, the second jig 900 clamps the edge portion of the optical film 10 along the peripheral direction of the optical film 10, so that it is beneficial for the optical film 10 to remain planar after being heated.

In some alternative embodiments, the second jig 900 is configured to be movable relative to the dummy 200 such that the second jig 900 can place the heated optical film 10 on the carrier surface 210. Illustratively, at least one of the second jig 900 and the dummy 200 is movably disposed such that the second jig 900 can move relative to the dummy 200.

Referring to fig. 1, in some alternative embodiments, the second jig 900 is disposed opposite to the dummy 200, and the dummy 200 is configured to be movable in a direction approaching the second jig 900, so that the dummy 200 can be attached to the optical film 10 on the second jig 900 by controlling the dummy 200 to move in a direction approaching the second jig 900, so as to shape the softened optical film 10.

Of course, in other alternative embodiments, the second jig 900 is disposed opposite to the dummy 200, and the second jig 900 may be further configured to be movable in a direction approaching or separating from the second jig 900, so that the optical film 10 on the second jig 900 may be attached to the dummy 200 by controlling the second jig 900 to move in a direction approaching to the dummy 200, so as to shape the softened optical film 10.

In some alternative embodiments, second jig 900 is configured to move between a third position and a fourth position. In the case that the second jig 900 is located at the third position, the second jig 900 is opposite to the first heater 300, so that the first heater 300 can heat the optical film 10 on the second jig 900. In the case that the second jig 900 is located at the fourth position, the second jig 900 is opposite to the dummy pattern 200, so that the optical film 10 on the second jig 900 may be opposite to the bearing surface 210 of the dummy pattern 200, so as to shape the optical film 10.

Of course, in some alternative embodiments, the second jig 900 is located between the first jig 100 and the dummy 200, and such that the second jig 900 may be opposite to the first jig 100 and the dummy 200, respectively.

In some alternative embodiments, optical film 10 includes an optical film 11, a protective film 12, and an adhesive layer 13. Wherein the protective film 12 and the adhesive layer 13 are respectively located at both sides of the optical film 11. Specifically, in the case where the optical film 10 is placed on the carrying surface 210, the protective film 12 is located on the side of the optical film 11 close to the carrying surface 210. The adhesive layer 13 is located on a side of the optical film 11 facing away from the carrying surface 210 to adhere to the optical lens 20 through the adhesive layer 13. The optical film 11 may be a polarizing film, for example.

In the above embodiment, the optical film 10 may be protected by the protective film 12, so as to be beneficial to prevent friction between the optical film 11 and the dummy 200, and prevent the optical film 11 from being scratched.

Referring to fig. 2, in some alternative embodiments, the alignment portion 220 is provided with light holes 221, the light holes 221 are opposite to the light emitting device 400 and the optical sensor 500, respectively, and light emitted from the light emitting device 400 can pass through the dummy 200 along the light holes 221.

In the lens film pasting device in the above example, the light emitted by the light emitting device 400 may pass through the light transmitting hole 221 and be received by the optical sensor 500, so as to determine whether the optical film 10 and the optical lens 20 implement optical alignment according to the light signal received by the optical sensor 500.

In some alternative embodiments, the light transmission holes 221 may be cylindrical through holes. In the case where the optical film 10 is an optical film having an optical axis, the axis corresponding to the light transmitting hole 221 coincides with the optical axis of the optical film on the dummy 200. This embodiment is beneficial for optically aligning the optical film 10 with the optical lens 20, improving the optical alignment accuracy of the optical film 10 with the optical lens 20, and further reducing the deviation of the optical alignment between the optical film 10 and the optical lens 20.

Referring to fig. 1, in some alternative embodiments, the dummy part 200 further includes a light-transmitting part 230, the light-transmitting part 230 is embedded in the light-transmitting hole 221, and an end surface of the light-transmitting part 230 near one end of the first fixture 100 is at least a part of the bearing surface 210. The transparent member 230 is made of a head-face material, for example: inorganic glass, transparent plastic, organic glass, transparent resin, etc.

In the above embodiment, the light transmitting member 230 can ensure that the light for optical alignment passes through the light transmitting portion of the dummy member 200, and the alignment portion 220 of the dummy member 200 can support the optical film 10, so as to be beneficial to improving the matching degree of the shape of the optical film 10 and the shape of the optical lens 20. Therefore, the scheme can be beneficial to reducing the deformation of the optical film 10 after the optical film 10 is aligned with the optical lens 20 and improving the optical alignment precision between the optical film 10 and the optical lens 20.

In some alternative embodiments, as shown in fig. 1-3, the lens film attachment device further includes a second heater 600, the second heater 600 is disposed on the mold 200, and the second heater 600 can heat the mold 200 and/or the optical film 10 on the bearing surface 210. Optionally, the dummy 200 has a mounting hole in which the second heater 600 is disposed. As an alternative embodiment, the second heater 600 is provided to the alignment part 220. Specifically, the mounting hole penetrates the alignment portion 220. Further, the light hole 221 is disposed in the second heater 600, and the light hole 221 penetrates the second heater 600.

In the above embodiment, the second heater 600 may be used to heat the dummy 200. Specifically, the second heater 600 may be used to heat the dummy 200 to reduce the temperature difference between the dummy 200 and the softened optical film 10, so as to avoid the adverse effect on the molding of the optical film 10 caused by the overlarge temperature difference between the side close to the bearing surface 210 and the side far from the bearing surface 210 after the optical film 10 is placed on the bearing surface 210.

In addition, the second heater 600 may further heat the optical film 10 by heating the dummy 200 and performing heat exchange between the dummy 200 and the optical film 10 on the bearing surface 210, so as to ensure that the optical film 10 can maintain a constant temperature during the bonding of the optical lens 20, and further facilitate the bonding of the optical film 10 and the optical lens 20.

Of course, the second heater 600 may also directly heat the optical film 10 on the dummy 200. Specifically, the second heater 600 may heat the optical film 10 by means of heat radiation or direct heat conduction.

There are many kinds of the second heater 600, such as an infrared light heater, a resistance wire heater, and the like. For this reason, the present embodiment defines a specific kind of the second heater 600.

Referring to fig. 2 to 4, in some alternative embodiments, the first jig 100 has a limiting groove 110, at least part of the optical lens 20 is embedded in the limiting groove 110, and the first jig 100 is in limiting fit with the optical lens 20 through the limiting groove 110. For example, the limiting groove 110 may be a circular groove, and the side wall of the limiting groove 110 is in stop fit with the side wall of the optical lens 20, so as to implement limiting and positioning on the optical lens 20.

In the lens film sticking device of the above embodiment, the first jig 100 is provided with the limiting groove 110, which is not only beneficial to improving the stability of the assembly between the first jig 100 and the optical lens 20, but also beneficial to improving the assembly precision between the first jig 100 and the optical lens 20. Further alternatively, the notch of the limiting groove 110 is opposite to the bearing surface 210 of the dummy mold 200, so that the relative position of the optical lens 20 and the optical film 10 can be defined by the first jig 100 and the dummy mold 200, which is beneficial to reducing the difficulty of optical alignment between the first jig 100 and the dummy mold 200.

In the process of optically aligning the optical lens 20 and the optical film 10, not only the relative positions of the optical lens 20 and the optical film 10, but also the optical properties of the optical lens 20 and the optical film 10, such as the polarization direction of the optical lens 20 and/or the optical film 10, are ensured.

In an alternative embodiment, as shown in fig. 2 and 3, the optical lens 20 includes a first sub-lens 21 and a second sub-lens 22, the first sub-lens 21 and the second sub-lens 22 being disposed in a stacked relationship. Illustratively, the first sub-mirror 21 is an optical lens and the second sub-mirror 22 is a quarter wave plate. The optical film 10 may be a linear polarizing film. For some optical devices, for example: VR glasses require the quarter wave plate to be at 45 degrees to the linear polarizer.

In an alternative embodiment, light emitting device 400 is a circularly polarized laser such that light emitting device 400 may act as a circularly polarized light source. The optical sensor 500 is an intensity receiver. Specifically, the light emitting device 400 emits circularly polarized light, so that the circularly polarized light passes through the optical lens 20 and the optical film 10, and further, when the intensity of illumination received by the optical sensor 500 reaches the maximum, the quarter wave plate forms an angle of 45 degrees with the linear polarizer.

Referring to fig. 2, in some alternative embodiments, the dummy 200 has a plurality of suction holes 240, the suction holes 240 penetrate the dummy 200 to the bearing surface 210, and the dummy 200 sucks the optical film 10 on the bearing surface 210 through the suction holes 240. Illustratively, a first end of the suction hole 240 extends through to the bearing surface 210, and a second end of the suction hole 240 is connected to a negative pressure device. Specifically, the negative pressure device discharges the gas in the adsorption hole 240, so that a negative pressure is formed in the adsorption hole 240, and the optical film 10 is adsorbed on the dummy 200 under the action of atmospheric pressure.

In the above embodiment, the adsorption hole 240 is formed on the dummy 200, so as to ensure the bonding stability of the optical film 10 and the dummy 200, prevent the optical film 10 from moving relative to the dummy 200 during the bonding process of the optical lens 20, and thus improve the accuracy of optical alignment between the optical film 10 and the optical lens 20, and reduce the alignment deviation between the optical film 10 and the optical lens 20. In addition, the adsorption of the optical film 10 by the adsorption hole 240 is also beneficial to ensure that the optical film 10 is better attached to the dummy 200, and the adsorption hole 240 can avoid air bubbles between the optical film 10 and the optical lens 20.

In some alternative embodiments, the adsorption holes 240 are uniformly distributed on the bearing surface 210, so as to ensure that the optical film 10 can be adsorbed and fixed by the adsorption holes 240 everywhere, further, separation between a part of the optical film 10 and the dummy 200 can be prevented, and the optical film 10 is ensured to be attached to the dummy 200 everywhere, thereby being beneficial to improving the shaping precision of the dummy 200 to the optical film 10.

In some alternative embodiments, as shown in fig. 3, the lens film device further includes a first housing 700 and a second housing 800 that cooperates with the first housing 700. Specifically, the first housing 700 may provide a mounting base for the dummy 200, and the second housing 800 may provide a mounting base for the first jig 100. Illustratively, the dummy 200 is located within the first housing 700. The first jig 100 is located in the second housing 800.

The first housing 700 is opposite the second housing 800, and the first housing 700 is configured to move between a first position and a second position relative to the second housing 800. With the first housing 700 in the first position relative to the second housing 800, the first housing 700 and the second housing 800 are separated. With the first housing 700 in the second position relative to the second housing 800, the first housing 700 abuts against a side of the optical film 10 adjacent to the dummy 200 and forms a first cavity 710 in sealing engagement with the optical film 10. The second housing 800 abuts against one side of the optical film 10 near the first fixture 100, and forms a second cavity 810 in sealing fit with the optical film 10.

In a further alternative embodiment, the first housing 700 has a first suction port 720, the first suction port 720 communicates with the first cavity 710, and the gas enters or exits the first cavity 710 along the first suction port 720, and the suction hole 240 communicates with the first suction port 720 and/or the first cavity 710; the second housing 800 has a second suction port 820, the second suction port 820 communicates with the second cavity 810, and gas enters or exits the second cavity 810 along the second suction port 820. Illustratively, the first suction port 720 and the second suction port 820 are each in communication with a negative pressure device such that the gases in the first cavity 710 and the second cavity 810 may be evacuated through the negative pressure device. Further, the first suction port 720 and the second suction port 820 may be further connected to an inflator by which the first cavity 710 and the second cavity 810 may be inflated.

In the above embodiment, two independent cavities, i.e., the first cavity 710 and the second cavity 810, may be formed using the first housing 700, the second housing 800, and the optical film 10. And the air in the first cavity 710 and the second cavity 810 can be pumped out through the first pumping port 720 and the second pumping port 820 respectively, so that preparation can be made for the optical film 10 to be attached to the optical lens 20, and air bubbles are prevented from being formed between the optical film 10 and the optical lens 20.

In addition, the first cavity 710 and the second cavity 810 are separated by the optical film 10, and thus the optical film 10 can be closely attached to the optical lens 20 by controlling the pressure difference between the first cavity 710 and the second cavity 810. Also, the pressure difference between the first cavity 710 and the second cavity 810 may be set according to the requirement of the bonding process of the optical film 10 and the optical lens 20.

In some alternative embodiments, the side of the first housing 700 adjacent to the second housing 800 is flush with the edge portion of the dummy 200. Therefore, in the case where the first case 700 is in the second position with respect to the second case 800, it is possible to avoid the first case 700 and the second case 800 from pulling the optical film 10, and to prevent the optical film 10 from being deformed under the pulling of the first case 700 and the second case 800. Further, the deformation amount of the optical film 10 is reduced in the process of attaching the optical film 10 to the optical lens 20, and the deviation of optical alignment between the optical film 10 and the optical lens 20 is reduced.

In some alternative embodiments, the first jig 100 is movably disposed on the second housing 800, so that the first jig 100 can move toward or away from the dummy mold 200 relative to the second housing 800.

The lens film attaching device of the above embodiment can prevent the optical lens 20 from attaching to the optical film 10 when the first housing 700 is at the second position relative to the second housing 800. Specifically, the first and second housings 700 and 800 are first controlled to be close to each other, so that the first and second housings 700 and 800 and the optical film 10 may form the first and second cavities 710 and 810. And after the first cavity 710 and the second cavity 810 are vacuumized, the optical lens 20 on the first jig 100 is attached to the optical film 10 on the dummy 200 by moving the first jig 100. According to the scheme, the first cavity 710 and the second cavity 810 can be formed first, then the optical lens 20 and the optical film 10 are attached after the gas in the first cavity 710 and the gas in the second cavity 810 are pumped out, so that the optical lens 20 and the optical film 10 can be attached in a vacuum environment, and the formation of bubbles between the optical lens 20 and the optical film 10 is prevented.

In some alternative embodiments, the lens film pasting device further includes a first driving member, the first driving member is connected with the first jig 100, and the first driving member drives the first jig 100 to approach or depart from the dummy 200, so that the first driving member can drive the first jig 100 and drive the optical lens 20 on the first jig 100 to be pasted with the optical film 10 on the dummy 200. Illustratively, the first driver is disposed in the second housing 800.

In some alternatives, the first drive member may be, but is not limited to, a telescoping mechanism. Specifically, the first driving member may be a screw mechanism, a hydraulic cylinder, an air cylinder, an electromagnetic linear module, a crank block mechanism, or the like.

Of course, in some alternative embodiments, the first driving member may also be provided to the second housing 800. The first driving member is connected to the dummy member 200, and the first driving member drives the dummy member 200 to move toward or away from the first jig 100, so that the optical film 10 on the dummy member 200 is attached to the optical lens 20 on the first jig 100 by the movement of the dummy member 200 in the direction toward the first jig 100.

In some alternative embodiments, the first jig 100 is rotatably disposed on the second housing 800, and an axis of rotation of the first jig 100 coincides with an optical axis of the optical lens 20 on the first jig 100. The embodiment can control the rotation of the first fixture 100 relative to the second housing 800 to achieve the optical alignment of the optical lens 20 on the first fixture 100 and the optical film 10 on the dummy 200.

Specifically, the first jig 100 may be rotated to make the quarter wave plate in the optical lens 20 and the linear polarizer in the optical film 10 at an angle of 45 degrees, so as to realize optical alignment of the optical lens 20 and the optical film 10.

In another aspect, embodiments of the present disclosure also provide a method of attaching an optical film, which may be used to attach the optical film 10 to the optical lens 20.

Referring to fig. 5 to 7, in some alternative embodiments, the method for attaching an optical film according to the present disclosure includes:

step S101: the optical lens 20 is fixed on the first fixture 100.

In the present disclosure, the optical lens 20 is mounted on the first jig 100 to fix the optical lens 20. Further, when the optical lens 20 is mounted in the first fixture 100, the surface of the optical lens 20 to be attached to the optical film 10 faces away from the first fixture 100, so as to attach the optical film 10 to the optical lens 20.

In some alternative embodiments of the present disclosure, the surface of the optical lens 20 that is required to be bonded to the optical film 10 is convex, concave, or planar. Illustratively, as shown in fig. 2, the surface of the optical lens 20 to which the optical film 10 is to be attached is concave.

Step S103: the optical film 10 is heated by the first heater 300.

For example, the first heater 300 may be controlled such that the first heater 300 may be opposite to the optical film 10, thereby allowing the first heater 300 to heat the optical film 10. Further, the heating temperature of the first heater 300 may be controlled according to the kind and model of the optical film 10 to soften the optical film 10 by heating.

Step S105: the optical film 10 is attached to the bearing surface 210 of the dummy 200, and the shape of the bearing surface 210 is matched with the shape of the optical lens 200. Optionally, the topography of the bearing surface 210 matches the topography of the desired side of the optical lens 20 to which the optical film 10 is to be applied.

Optionally, after the optical film 10 is softened, the optical film 10 is placed on the bearing surface 210, so that the softened optical film 10 can adapt to the shape of the bearing surface 210, and the optical film 10 is shaped. The shape of the bearing surface 210 is matched with the shape of the optical lens 200, so that the shape of the optical film 10 can be matched with a signal of one surface of the optical lens 20, which is required to be attached to the optical film 10, thereby being beneficial to reducing deformation of the optical film 10 after optical alignment with the optical lens 20 and improving the accuracy of optical alignment between the optical lens 20 and the optical film 10.

In some alternative embodiments, the optical film 10 is adhered to the bearing surface 210 of the dummy 200 with the first heater 300 heating the temperature of the optical film 10 to 130 ℃ to achieve shaping of the optical film 10.

Step S107: the intensity of illumination passing through the optical lens 20 and the optical film 10 is acquired by the optical sensor 500.

Step S109: according to the illumination intensity obtained by the optical sensor 500, the dummy 200 and the first jig 100 are controlled to rotate relatively until the optical film 10 is aligned with the optical lens 20.

In the present disclosure, the alignment of the optical lens 20 and the optical film 10 may be performed according to the intensity of light passing through the optical lens 20 and the optical film 10. For example, the optical alignment of the optical film 10 and the optical lens 20 may be achieved by rotating one of the first jig 100 and the dummy 200.

In some alternative embodiments, a quarter wave plate is included in the optical lens 20 and a linear polarizing film is included in the optical film 10. Further, the optical alignment of the optical film 10 and the optical lens 20 can be achieved by controlling the relative rotation of the first jig 100 and the dummy mold 200. Specifically, in the process of relatively rotating the first jig 100 and the dummy 200, the illumination intensity obtained by the optical sensor 500 reaches the maximum, and then the quarter wave plate in the optical lens 20 and the linear polarizer in the optical film 10 are at an included angle of 45 ° to realize optical alignment of the optical lens 20 and the optical film 10.

Step S111: the first jig 100 and the dummy 200 are controlled to move relatively until the optical film 10 is attached to the optical lens 20.

In some alternative embodiments, the first jig 100 and the dummy 200 are controlled to move relatively, which may be that the first jig 100 is kept stationary, and the dummy 200 moves towards the direction approaching the first jig 100, so as to drive the optical film 10 on the dummy 200 to approach the optical lens 20 on the first jig 100, so that the optical film 10 is attached to the optical lens 20.

In other alternative embodiments, the first jig 100 and the dummy 200 are controlled to move relatively, which may be that the dummy 200 is kept stationary, and the first jig 100 is controlled to move towards the direction close to the dummy 200, so as to drive the optical lens 20 on the first jig 100 to move towards the square direction close to the dummy 200, so that the optical film 10 is attached to the optical lens 20.

The laminating method of the optical film provided by the implementation of the disclosure firstly shapes the optical film 10, and performs optical alignment on the optical film 10 and the optical lens 20 after the shaping, so that the deformation amount of the optical film 10 and the optical lens 20 after the alignment can be reduced, and further the alignment deviation between the optical film 10 and the optical lens 20 is reduced.

Referring to fig. 6 and 7, in some alternative embodiments, before the optical film 10 is attached to the bearing surface 210 of the dummy 200 in step S105, the attaching method of the optical film 10 provided in the present disclosure further includes:

step S113: the dummy 200 is heated by the second heater 600.

The present disclosure heats the dummy 200 through the second heater 600, not only can reduce the temperature difference between the optical film 10 and the dummy 200, but also can maintain the temperature of the optical film 10 on the dummy 200 through the second heater 600, so as to avoid the influence of the temperature change of the optical film 10 on the alignment precision between the optical film 10 and the optical lens 20 in the lamination process of the optical film 10 and the optical lens 20.

Specifically, in some alternative embodiments, the temperature of the dummy 200 may be heated to 150 ℃ by the second heater 600 before the optical film 10 is attached to the bearing surface 210 of the dummy 200, and the heating may be continued by the second heater 600 after the optical film 10 is attached to the bearing surface 210, so that the temperature of the optical film 10 may be maintained at 130 ℃.

Referring to fig. 7, in some alternative embodiments, before controlling the relative movement of the first jig 100 and the dummy 200 in step S111 until the optical film 10 and the optical lens 20 are attached, the attaching method of the optical film provided in the embodiments of the present disclosure further includes:

In step S115, the first housing 700 and the second housing 800 are controlled to move relatively until the first housing 700 and the second housing 800 respectively stop against two opposite sides of the optical film 10.

Illustratively, the first housing 700 abuts the optical film 10 and sealingly engages the optical film 10 to form a first cavity 710. The second housing 800 abuts against the optical film 10 and forms a second cavity 810 in sealing engagement with the optical film 10.

Step S117: the inside of the first and second cases 700 and 800 is evacuated. I.e., the gas in the first cavity 710 and the second cavity 810 is evacuated.

The first suction port 720 and the second suction port 820 are connected to a negative pressure device, so that the first housing 700 and the second housing 800 are vacuumized by the negative pressure device, so that the optical film 10 and the optical lens 20 can be bonded in a vacuum environment, which is beneficial to preventing air bubbles from forming between the optical film 10 and the optical lens 20, so as to avoid the air bubbles from affecting the optical performance of the optical element formed after the optical film 10 and the optical lens 20 are bonded.

In some alternative embodiments, after controlling the relative movement of the first jig 100 and the dummy 200 in step S111 until the optical film 10 and the optical lens 20 are attached, the attaching method of the optical film provided in the embodiments of the present disclosure further includes:

Step S119: air is introduced into the first housing 700 until the optical film 10 and the optical lens 20 are in close contact.

In the present disclosure, air can be introduced into the first cavity 710 through the first suction port 720, and then the optical film 10 is tightly attached to the optical lens 20 by using the pressure difference between the first cavity 710 and the second cavity 810, so as to ensure the quality of the film attached to the optical lens 20.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. A lens film sticking device is characterized by comprising a first jig (100), a profiling piece (200), a first heater (300), an optical sensor (500) and a light emitting device (400), wherein the first heater (300) is used for heating an optical film (10); the first jig (100) is used for fixing the optical lens (20);

The dummy (200) is opposite to the first jig (100), and the dummy (200) and the first jig (100) are configured to be relatively rotatable; one surface of the profiling piece (200) close to the first jig (100) is a bearing surface (210), the appearance of the bearing surface (210) is matched with the appearance of the optical lens (20), and the bearing surface (210) is used for placing the optical film (10);

One of the light emitting device (400) and the optical sensor (500) is located at a side of the first jig (100) facing away from the dummy (200), and the other is located at a side of the dummy (200) facing away from the first jig (100);

The dummy (200) comprises an alignment part (220), wherein the alignment part (220) is respectively opposite to the light emitting device (400) and the optical sensor (500), so that the light emitted by the light emitting device (400) can pass through the optical lens (20), the optical film (10) and the alignment part (220) to the optical sensor (500);

The profiling piece (200) and the first jig (100) relatively rotate according to the optical signals received by the optical sensor (500) until the optical membrane (10) and the optical lens (20) are in optical alignment.

2. The lens film laminating apparatus according to claim 1, wherein the alignment portion (220) is provided with a light hole (221), the light hole (221) is opposite to the light emitting device (400) and the optical sensor (500), respectively, and light emitted by the light emitting device (400) passes through the dummy pattern (200) along the light hole (221).

3. The lens film laminating device according to claim 2, wherein the dummy member (200) further comprises a light-transmitting member (230), the light-transmitting member (230) is embedded in the light-transmitting hole (221), and an end surface of the light-transmitting member (230) near one end of the first jig (100) is at least part of the carrying surface (210).

4. The lens film laminating device of claim 1, further comprising a second heater (600), the second heater (600) being disposed on the dummy (200), and the second heater (600) being configured to heat the optical film (10) on the dummy (200) and/or the bearing surface (210).

5. The lens film sticking apparatus according to claim 1, wherein the first jig (100) has a limiting groove (110), at least part of the optical lens (20) is embedded into the limiting groove (110), and the first jig (100) is in limiting fit with the optical lens (20) through the limiting groove (110).

6. The lens film attachment device according to any one of claims 1 to 5, wherein the dummy (200) has a plurality of adsorption holes (240), the adsorption holes (240) penetrate the dummy (200) to the bearing surface (210), and the dummy (200) adsorbs the optical film (10) located on the bearing surface (210) through the adsorption holes (240).

7. The lens film laminating apparatus according to claim 6, wherein said adsorption holes (240) are uniformly distributed on said carrying surface (210).

8. The lens film laminating apparatus of claim 6, further comprising a first housing (700) and a second housing (800) for use with the first housing (700), the dummy (200) being located within the first housing, the first jig (100) being located within the second housing (800), the first housing (700) and the second housing (800) being opposite, and the first housing (700) being configured to move between a first position and a second position relative to the second housing (800);

-with the first housing (700) in the first position relative to the second housing (800), the first housing (700) and the second housing (800) are separated; with the first housing (700) in the second position relative to the second housing (800), the first housing (700) is abutted against one side of the optical film (10) against the dummy (200) and is in sealing fit with the optical film (10) to form a first cavity (710); the second shell (800) is abutted against one side, close to the first jig (100), of the optical film (10) and is in sealing fit with the optical film (10) to form a second cavity (810);

The first housing (700) has a first suction port (720), the first suction port (720) is communicated with the first cavity (710), and gas enters or exits the first cavity (710) along the first suction port (720), and the adsorption hole (240) is communicated with the first suction port (720) and/or the first cavity (710); the second housing (800) has a second suction port (820), the second suction port (820) communicates with the second cavity (810), and gas enters or exits the second cavity (810) along the second suction port (820).

9. The lens film laminating apparatus of claim 8, further comprising a first drive member,

The first driving piece is connected with the first jig (100), and drives the first jig (100) to be close to or far away from the profiling piece (200); or alternatively

The first driving piece is connected with the profiling piece (200), and the first driving piece drives the profiling piece (200) to be close to or far away from the first jig (100).

10. A method of bonding an optical film, the method comprising:

Fixing the optical lens on the first jig;

heating the optical film by a first heater;

Attaching the optical film to a bearing surface of the profiling piece, wherein the shape of the bearing surface is matched with that of the optical lens;

Acquiring the illumination intensity passing through the optical lens and the optical film by an optical sensor;

According to the illumination intensity obtained by the optical sensor, controlling the profile modeling piece and the first jig to rotate relatively until the optical film and the optical lens are aligned;

and controlling the first jig and the profiling piece to move relatively until the optical film is attached to the optical lens.

11. The method of claim 10, wherein the adhesive layer is formed by laminating the optical film,

Before said attaching the optical film to the bearing surface of the dummy, the method further comprises:

The dummy is heated by a second heater.