JP2014200943A - Method for manufacturing an optical element furnished with functional films - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical element that can simultaneously paste functional films onto both surfaces of an optical element, such as an optical lens and eyeglass lens, and manufacture an optical element furnished with desired functional films and having new added values.SOLUTION: After an optical element held by a holding jig has been set within an openable/closable second chamber in a state in which the second chamber is open, the second chamber is closed. After two functional films have been positioned respectively between first and second chambers and between second and third chambers, hermetic spaces are enclosed within the respective chambers. Then, pressures in the chambers are reduced to specified levels, and gas is introduced into the first and third chambers. After the pressures therein have been elevated, two functional films are contacted, via an adhesive, with both surfaces of an optical element so as to simultaneously paste, via the adhesive, the functional films onto both surfaces of the optical element. Adhesive layers consisting of the adhesive are formed on both surfaces of the optical element and on at least one of the two functional films.

Description

  The present invention relates to a method for manufacturing an optical element having a functional film (film) such as an optical lens or a spectacle lens.

In an optical element such as a spectacle lens, a method of introducing a primer layer between a lens base material and a hard coat layer is generally used in order to provide functionality, for example, impact resistance performance (for example, a patent document). 1).
In this Patent Document 1, a primer layer coating solution is applied to both surfaces of a lens base material by a dip method or to a concave surface of a lens base material by a spin coating method, and cured by heat treatment to form a primer layer. It is disclosed.

On the other hand, in order to impart desired characteristics to optical elements such as optical lenses and spectacle lenses, functional films having desired characteristics on the curved surface of the lens substrate, such as polarizing films, contrast enhancement films, and photochromic films Adhesive films such as antireflective films and other optical properties, and films that impart surface properties such as hydrophobicity, antifouling properties, and scratch resistance (impact resistance, abrasion resistance, scratch resistance), etc. (See, for example, Patent Documents 2 and 3).
In this Patent Document 2, the periphery of the film is fixed above the chamber, the temperature inside the chamber and the air pressure difference inside and outside the chamber are controlled, and the curvature of the adhesion surface of the film is compared with the average curvature of the curved surface of the lens substrate. The lifting and lowering piston attached with the lens base material with the adhesive layer formed on the curved surface is raised to press the curved surface against the adhesive surface of the film, and the film and the curved surface of the lens base material are completely An adhesion method and apparatus for obtaining contact is disclosed.
Further, Patent Document 3 fixes the peripheral edge of the film above the chamber, evacuates the pressure in the container, and activates the activated droplet (water-soluble) on the dry latex layer coated on the curved surface by the vacuum effect. The movable holder on which the lens substrate on which the medium droplet is mounted is mounted is raised until the film contacts the activated droplet, and the film is deformed to coincide with the curved surface of the lens substrate and activated. A processing method of spreading the liquefied droplets onto the dry latex layer and heating to adhere the film to the curved surface of the lens substrate, and releasing the vacuum in the container to take out the lens substrate having the film adhered to the curved surface. Disclosure.

  In particular, Patent Document 2 specifically describes an adhesive layer on a curved surface to which a film is to be bonded on a lens support fixed to the tip of an elevating piston such as an actuator provided in an open chamber. The back surface of the formed lens substrate is placed, the lens substrate is fixed and supported by a lens support, and the periphery of the film is placed above the sidewall of the chamber so that the open portion of the chamber is sealed with the film. It was fixed and air pressure difference was given between both sides of the film, and the film was pre-molded so that the curvature of the sticking surface of the film was larger than the average curvature of the curved surface of the lens substrate by heating the film above a predetermined temperature. Later, when heating is stopped and the temperature of the film drops below a predetermined temperature, the curvature of the sticking surface of the film becomes an air pressure difference that is substantially the same as or less than the average curvature of the curved surface of the lens substrate. After adjusting the air pressure in the chamber, the piston is raised while maintaining this air pressure difference state, and the curved surface of the lens base is pressed against the adhesive surface of the film, so that the film and the curved surface of the lens base are An adhesion method and apparatus for obtaining complete contact is disclosed.

Japanese Patent No. 3482721 Special table 2009-540079 Japanese Patent No. 4861994

  By the way, in the manufacturing method which raises functionality, for example, impact resistance performance, using the primer composition described in Patent Document 1, it is possible to improve impact resistance performance by forming a primer layer on one side or both sides of the lens substrate. Although it is sufficiently clear to the American FDA standard, the method of forming the primer layer has a problem that the impact resistance of the high refractive lens is inferior to that of the low refractive lens.

For this reason, as described in Patent Documents 2 and 3, a desired functionality such as impact resistance of a high refractive lens is obtained by attaching a film having functionality such as impact resistance to a lens substrate. However, in the method for attaching a film described in Patent Documents 2 and 3, since it is necessary to mechanically move the curved surface of the lens base material and press it against the film, the function to one curved surface of the lens base material is possible. Even if the functional film can be applied, there is a problem that the functional film cannot be applied to both surfaces, for example, both curved surfaces or both the curved surface and the flat surface at the same time.
Of course, it is possible to manufacture a lens in which a functional film is attached to both sides of the lens base material sequentially by attaching the film to the lens substrate according to the method for attaching a film described in Patent Documents 2 and 3, but this is costly and laborious. In addition, since the surface on which the film is previously attached is supported by a lens support or a holder, there is a problem that the film surface may be soiled or scratched.
In particular, when a functional film is pasted on both surfaces of an optical element such as a spectacle lens that has already been finished to a desired frequency, the surface on which the film has been pasted is supported by a lens support or holder. Dirt and scratches on the film surface are a serious problem.

  In view of the circumstances and problems of the prior art as described above, the present invention is an optical element such as an optical lens or an eyeglass lens, particularly an optical element such as an eyeglass lens that has already been finished to a desired power. In addition, a functional film, for example, a film having optical characteristics such as polarization characteristics and surface characteristics such as impact resistance performance can be simultaneously attached to both the first surface and the second surface of the optical element. To provide a method for producing an optical element having a functional film capable of producing an optical element having a new added value and having a desired functional film (film) by attaching the functional film. Objective.

  In order to achieve the above object, a method for manufacturing an optical element according to the present invention uses a first chamber, a second chamber that can be opened and closed, and a third chamber, respectively, which form a sealed space, respectively, on both surfaces of the optical element. A method of manufacturing an optical element having a functional film having a step of attaching two functional films simultaneously with an adhesive, wherein the step of attaching opens the second chamber to both surfaces. After the optical element is set in the second chamber with its end face held by a holding jig, the second chamber is closed, and between the first chamber and the second chamber, and the second chamber. Each of the two functional films is disposed between the first chamber and the third chamber to form a sealed space in each chamber, and then the first chamber, the second chamber, and Each of the third chambers is depressurized and maintained at a predetermined pressure, and gas is introduced into the first chamber and the third chamber to increase the pressure in both chambers and set in the second chamber. The two functional films are brought into contact with both surfaces of the optical element from both sides via the adhesive, and the two functional films are simultaneously applied to both surfaces of the optical element with the adhesive. An adhesive layer made of the adhesive is formed on at least one of both surfaces of the optical element and the two functional films.

Here, after depressurizing each of the first chamber, the second chamber, and the third chamber, before introducing gas into the first chamber and the third chamber, both sides of the optical element are provided. It is preferable to heat the two functional films arranged to make them flexible.
In addition, after the attaching step, the second chamber is further opened to take out the optical element with the functional film in which the two functional films are attached to both surfaces, and the holding. A step of removing the optical element with the functional film from the jig and cutting the functional film protruding from the optical element, and both surfaces of the two functional films and the optical element after the cutting step It is preferable to have a curing step of curing the adhesive layer between the two and manufacturing an optical element having the functional film.
Alternatively, after the pasting step, further, a curing step for curing the adhesive layers between the two functional films and both surfaces of the optical element, and after the curing step, the second chamber And removing the optical element with the functional film with the two functional films attached to both surfaces, removing the optical element with the functional film from the holding jig, and removing the optical element with the optical element. It is preferable to include a cutting step of cutting the functional film protruding from the element to manufacture an optical element having the functional film.

The adhesive layer is formed in advance on both surfaces of the optical element before the attaching step, and the holding jig suspends and holds the optical element in advance. The optical element on which the adhesive layer is formed is set in the second chamber with its end face held by a holding jig, and the first chamber, the second chamber, and the third chamber are set. The chamber is preferably arranged in a horizontal direction.
Further, before the attaching step, the optical element is further held in a state where the end face of the optical element is held by the holding jig and the optical element is set in the holding jig, and the optical element is set in the holding jig. A cleaning process for cleaning and drying, and an application process for forming an adhesive layer on both surfaces of the optical element by applying an adhesive to the optical element after drying in a state of being set on the holding jig. It is preferable.
In the cleaning step, the optical element suspended and held on the holding jig is dipped in a cleaning liquid in a cleaning tank for cleaning and then dried, and the coating step is suspended on the holding jig. The optical element held down is immersed in an adhesive solution in an adhesive tank and pulled up to apply the adhesive to the optical element to a predetermined thickness, and the predetermined thickness is applied to both surfaces of the optical element. It is preferable that the adhesive layer is formed.

The holding jig holds the optical element horizontally, and the adhesive layer is formed in advance on one side of the two functional films, and the adhesive layer is formed on the one side, respectively. The two functional films thus formed are disposed between the first chamber and the second chamber, and between the second chamber and the third chamber, respectively. The second chamber and the third chamber are preferably arranged in a vertical direction.
Further, before the attaching step, a cleaning step for cleaning and drying the optical element, and a holding step for holding the end face of the optical element with the holding jig and setting the optical element on the holding jig, It is preferable to have an adhesive layer forming step of forming the adhesive layer on one side of the two functional films in advance.
Moreover, it is preferable that the said adhesive layer formation process affixes a double-sided adhesive type adhesive sheet on the single side | surface of the said 2 functional film, respectively, and forms the said adhesive layer of the said predetermined thickness.

The optical element is preferably an optical lens or a spectacle lens.
In addition, the spectacle lens is preferably a spectacle lens that has already been finished to a desired power.
By the way, the optical element manufacturing method of the present invention is eventually a method for manufacturing an optical element provided with a functional film, in which an adhesive is applied to both the first surface and the second surface of the optical element. Including a step of forming an adhesive layer on both surfaces and a step of simultaneously bonding two functional films to both surfaces of the optical element on which the adhesive layer is formed, or two functional films A process of affixing a double-sided adhesive type adhesive sheet to one side of each to form an adhesive layer;
And simultaneously bonding two functional films, each having the adhesive layer formed on one side, on both surfaces of the optical element.

According to the present invention, since it is configured as described above, the first surface of the optical element such as an optical lens or a spectacle lens, particularly an optical element such as a spectacle lens that has been finished to a desired power, and A functional film, for example, a film having optical characteristics such as polarization characteristics and surface characteristics such as impact resistance can be attached to the second surface at the same time.
Further, according to the present invention, it is possible to manufacture an optical element having a new added value provided with a desired functional film (film) by pasting a desired functional film.

It is sectional drawing of an example of the lens for spectacles which is an optical element manufactured by the manufacturing method of the optical element provided with the functional film which concerns on this invention. It is a flowchart which shows the whole of an example of the manufacturing method of the optical element provided with the functional film which concerns on 1st Embodiment of this invention. FIG. 3 is an explanatory schematic diagram for explaining an example of a lens setting process shown in FIG. 2. It is an explanatory schematic diagram for explaining an example of the adhesive application step shown in FIG. It is a typical perspective view which shows one form of one Example of the sticking apparatus of the functional film which implements the sticking process shown in FIG. It is a typical perspective view which shows the other form of the sticking apparatus shown in FIG. It is sectional drawing which shows the seal structure of the sticking apparatus shown in FIG. FIG. 3 is an explanatory schematic diagram for explaining an example of a lens extraction process shown in FIG. 2. It is a flowchart which shows the whole of an example of the manufacturing method of the optical element provided with the functional film which concerns on 2nd Embodiment of this invention. FIG. 10 is an explanatory schematic diagram for explaining an example of a lens setting process shown in FIG. 9. It is typical sectional drawing which shows one form of one Example of the sticking apparatus of the functional film which implements the sticking process shown in FIG. It is typical sectional drawing which shows the other form of the sticking apparatus shown in FIG.

Hereinafter, a method for producing an optical element having a functional film according to the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.
First, an optical element provided with a functional film manufactured by the method of the present invention will be described.
FIG. 1 is a cross-sectional view of an example of a spectacle lens that is an optical element manufactured by the method for manufacturing an optical element having a functional film according to the present invention.
As shown in the figure, a spectacle lens 10 which is an optical element provided with a functional film includes two main surfaces (first lenses), which are an optical element without a functional film and a spectacle lens 12. Adhesive layer 14 (14a and 14b) laminated on both surfaces of surface 12a and second main surface 12b) and functional film 16 (16a and 16b) laminated on adhesive layer 14 (14a and 14b), respectively. And have.
Below, each element (the spectacles lens 12, the adhesive layer 14, and the functional film 16) which comprises the spectacles lens 10 with a functional film is each explained in full detail.

(Glasses lens)
The spectacle lens 12 (hereinafter, simply referred to as the lens 12) is a spectacle lens without a functional film that has already been finished to a desired frequency, and has two main surfaces, a first surface 12a and a second main surface 12b. Have both sides.
The type of the lens 12 is not particularly limited, and a normal lens such as plastic and inorganic glass can be used. Among them, a plastic lens is preferable in terms of excellent handleability, and particularly a plastic lens for spectacles is more preferable.
The material of the plastic lens is not particularly limited. For example, acrylic resin, thiourethane resin, methacrylic resin, allyl resin, episulfide resin, polycarbonate resin, polyurethane resin, polyester resin, polystyrene resin, Examples thereof include polyether-sulfone resin, poly-4-methylpentene-1 resin, diethylene glycol bisallyl carbonate resin (CR-39), polyvinyl chloride resin, halogen-containing copolymer, and sulfur-containing copolymer.

The thickness of the lens 12 is not particularly limited and is appropriately set depending on the application, but may be a thickness used for a normal spectacle lens, but from the viewpoint of handleability, it is about 1 to 30 mm. There are many.
The lens 12 may not be transparent and may be colored as long as it has translucency.
Further, in FIG. 1, the surface shapes of both surfaces (12a, 12b) of the lens 12 are a convex surface and a concave surface, but the surface shape is not limited and is selected from any shape such as a flat surface, a convex surface, or a concave surface. . Further, the uneven surfaces of both surfaces (12a, 12b) of the lens 12 may be spherical or aspherical.

Here, as an optical element used in the present invention to which a functional film serving as a functional film is attached, an eyeglass lens that has already been finished to a desired power but has not been processed on the frame will be described. However, in the present invention, the present invention is not limited to this, and a spectacle lens in which the frame is processed may be used. In addition, the optical element of the present invention is not limited to a spectacle lens, and may be an optical lens other than a spectacle lens, a lens finished to a predetermined power, or no power. It may be a lens, for example, goggles such as ski goggles, welding goggles and diving goggles, safety glasses, and a clip-on polarization lens.
Of course, the optical elements and lenses described in Patent Documents 1 to 3 can be used as the optical element according to the present invention.
Further, in the optical element which is the spectacle lens 10 with the functional film of the present invention, after the functional film 16 is attached to the lens 12, surface treatment for primer, hardware, antireflection, water resistance / oil resistance, etc. is performed. Of course, it may be.

(Adhesive layer)
The adhesive layer 14 is a layer made of an adhesive for ensuring adhesion between the lens 12 and the functional film 16.
The adhesive forming the adhesive layer 14 preferably includes ester polyurethane. The ester polyurethane is a polyurethane containing an ester bond, and is a polymer obtained by copolymerizing a polyester polyol and a polyisocyanate, for example. The polyester polyol is obtained by reacting a polybasic carboxylic acid and a polyhydric alcohol. In the present invention, it is preferable that the ester-based polyurethane contains an aromatic group in that the adhesive effect is more excellent.

The adhesive that forms the adhesive layer 14 is preferably an adhesive containing the ester polyurethane as described above. However, the present invention is not limited to this, and examples thereof include polycarbonate polyurethane, epoxy, acrylic, and silicon. Adhesives such as vinyl acetate resin, polystyrene, polyvinyl alcohol, and cellulose may be used. The adhesive type may be any of thermosetting, thermoplastic (hot melt type), or ultraviolet thermosetting.
Needless to say, the adhesives described in Patent Documents 1 to 3 can also be used as the adhesive according to the present invention.

The thickness of the adhesive layer 14 is not particularly limited, but is preferably 3.8 μm or more and more preferably 4.0 μm or more in terms of better adhesion between the lens 12 and the functional film 16.
The method for forming the adhesive layer 14 is not particularly limited, and a liquid adhesive composed of a composition containing the ester polyurethane latex is applied in advance on the lens 12, and after the functional film 16 is applied, a curing treatment is performed. Or a double-sided adhesive type adhesive sheet made of the above-mentioned adhesive, and bonded to one side of the functional film 16 in advance, and two sheets with the adhesive sheet attached And a method of applying a curing treatment after the functional film 16 is attached to both surfaces of the lens 12. The adhesive layer 14 may be formed by pasting both sides of the lens 12 in advance with a double-sided adhesive sheet, or the liquid adhesive may be applied in advance to one side of the functional film 16 for adhesion. The layer 14 may be formed.

(Functional film)
The functional film 16 is a film to be bonded onto the adhesive layer 14 described above, and is for imparting functionality such as impact resistance (surface mechanical characteristics) to the lens 12.
The material of such a functional film 16 is not particularly limited. For example, polycarbonate, polyethylene terephthalate, polyamide, polyester, polyimide, polyurethane, olefin elastomer, triacetyl cellulose, cycloolefin polymer, poly (meth) acrylate And polymer materials such as polyvinyl alcohol.
The thickness of the functional film 16 is not particularly limited, but considering the minimum thickness of the optical element 10, the thickness of the functional film 16 is preferably 0.2 mm or less, and more preferably 0.1 mm or less.

In addition, the functional film used in the present invention has been described by taking an impact resistant film to be attached to both surfaces of a spectacle lens, but the present invention is not limited, and includes a spectacle lens, an optical lens, etc. Any film may be used as long as it imparts a predetermined functionality to the optical element. For example, a film imparting optical properties such as a polarizing film, a contrast enhancement film, a photochromic film, an antireflection film, and a hydrophobic property. , Antifouling, scratch resistance (impact resistance, abrasion resistance, scratch resistance) and other desired surface properties such as film, easy dyeability, specific wavelength cut film (ultraviolet / infrared cut film) It may be a functional film having characteristics.
In addition, as a functional film which concerns on this invention, it cannot be overemphasized that the functional film etc. of patent documents 1-3 can be used.

(Method for producing optical element provided with functional film)
(First embodiment)
FIG. 2 is a flowchart showing an entire example of a method for manufacturing an optical element including the functional film according to the first embodiment of the present invention.
As shown in FIG. 2, first, in step S10, the lens 12 is prepared and the lens is set. Specifically, in the lens setting step S10, the end surface of the lens 12 is supported by three arms 18a of a holding jig (lens holding jig) 18 as shown in FIG. The holding jig 18 is set to the above. The holding form of the lens 12 set on the holding jig 18 is not limited to the holding form shown in FIG. 3, and any holding form may be used. The shape of the holding jig 18 is appropriately determined according to the shape of the lens 12. What is necessary is just to select and the holding | maintenance form of the lens 12 should just be selected suitably according to the shape of the holding jig 18. FIG. In FIG. 3, the shapes of the lens 12 and the holding jig 18 are schematically shown for explanation, and it goes without saying that the present invention is not limited to the illustrated shapes.

Next, in step S12 shown in FIG. 2, the lens 12 is washed and dried. Specifically, in the cleaning / drying step S12, the lens 12 is set in the holding jig 18 and immersed in a liquid cleaning agent in a cleaning tank (not shown) to remove dust and dirt adhering to the lens 12. After the cleaning, the lens 12 is set on the holding jig 18 and pulled up from the cleaning agent, pulled out from the cleaning tank, and dried.
The cleaning and drying of the lens 12 in the cleaning / drying step S12 is not particularly limited, and a conventionally known cleaning method and drying method can be applied, and a conventionally known cleaning agent corresponding to the cleaning method can be used. .

  The cleaning agent for cleaning the lens 12 is not particularly limited, and a known cleaning agent can be used. For example, Japanese Patent No. 3355160 suitable for cleaning a lens, particularly a plastic lens. 5 to 5 wt% or more of the alkylene oxide compound described in the above, 95 to 5 wt% of a hydrocarbon having 10 to 18 carbon atoms including an olefinic hydrocarbon, and 0.5 to 0.5% of a nonionic surfactant having an average HLB of 4 to 18 Water, optional additives, etc. are mixed in a conventional manner with a cleaning agent containing 0.1 to 70% by weight of an amine compound having a molecular weight of 35 to 35 wt% and nitrogen atoms of 1 to 5 and a molecular weight of 50 to 300. Can be used. In particular, in the case of a glass lens, an alkaline cleaner obtained by dissolving a water-soluble alkali compound such as sodium hydroxide described in Japanese Patent No. 5137389 in water so as to be 1 to 30 wt% is used. be able to. In addition, when using such an alkali cleaning agent, as long as required detergency is ensured, the well-known component contained in a normal cleaning agent may be mix | blended as needed. Examples of such components include surfactants, chelating agents, sequestering agents, antiseptics, rust inhibitors, antifoaming agents, antioxidants, 1 to 5 nitrogen atoms, and a molecular weight in the range of 50 to 300. Specific amine compounds, esters such as coconut fatty acid methyl and benzyl acetate, solvents such as hydrocarbon solvents or alcohols, and the like.

Next, in step S <b> 14 shown in FIG. 2, an adhesive is applied to both surfaces of the lens 12. Specifically, in the adhesive application step S14, as shown in FIG. 4, with the lens 12 set on the holding jig 18, it is immersed in the liquid adhesive 22 in the adhesive tank 20 and pulled up. In order to form the adhesive layer 14 on both surfaces of the lens 12, an adhesive is applied to both surfaces of the lens 12 to a predetermined thickness.
The method of applying the adhesive to both surfaces of the lens 12 is not limited to the dipping method in the liquid adhesive 22 in the adhesive tank 20 shown in FIG. A known method such as spin coating (rotary coating) or blade coating can be used, and may be appropriately selected according to the holding state of the lens 12 by the holding jig 18. Note that FIG. 4 is schematically shown for explanation, and it goes without saying that the present invention is not limited to the illustrated adhesive application method.

  Next, in step S <b> 16 shown in FIG. 2, the functional films 16 (16 a and 16 b) are attached to both surfaces of the lens 12. Specifically, in the sticking step (process) S16, first, as shown in FIG. 5, the lens 12 is set in the holding jig 18 in a sticking device 24 in which each chamber is divided and opened. (Step S18), the chambers divided as shown in FIG. 6 are closed, and each chamber is depressurized (Step S20), heated (Step S22), and pressurized (released or pressurized) (Step S24). The functional films 16 (16a and 16b) are pasted on both surfaces (12a and 12b) of the lens 12, respectively.

The sticking device 24 shown in FIGS. 5 and 6 is for carrying out the sticking process S16 including the device setting step S18, the pressure reducing step S20, the heating step S22, and the pressure raising step S24 shown in FIG. And three chambers each having a rectangular parallelepiped space divided into four rectangular parallelepiped spaces, a second chamber 28 composed of two divided chambers 28a and 28b, and a third chamber 30, respectively.
The first, second and third chambers 26, 28 and 30 are connected to pipes 32 a, 32 b and 32 c, respectively. These pipes 32 a, 32 b and 32 c are connected to the main pipe 32 and the main pipe 32. Are connected to a vacuum device such as a vacuum pump (not shown) or an air source or a pressurizing device such as a pump. In addition, solenoid valves 34a, 34b, and 34c are connected to the pipes 32a, 32b, and 32c, respectively, and the pipes 32a, 32b, and 32c are opened and closed.
Furthermore, heaters 36a and 36b are attached in the first chamber 26 and the third chamber 30, respectively.

In the device setting step S18 of the pasting process S16 shown in FIG. 2 using such a pasting device 24, the pasting device 24 includes a first chamber 26, a divided chamber 28a of the second chamber 28, as shown in FIG. 28 b and the third chamber 30 are divided into four chamber spaces. Adhesive is applied to both surfaces of the first surface 12a and the second surface 12b in the adhesive application step S14 in the space between the divided chambers 28a and 28b that are divided into two parts in a sealable manner in the second chamber 28. The lens 12 is set in a state where it is set on the holding jig 18. At the same time, the space between the first chamber 26 and the divided chamber 28a of the second chamber 28 divided so as to be sealable, and the divided chamber 28b and the third chamber 30 of the second chamber 28 divided so as to be sealable The functional films 16a and 16b are set in the space between them.
Here, the functional films 16a and 16b may be the same functional film, or may be different functional films having different functionalities, and are appropriately selected according to the use of the spectacle lens. do it.
In the sticking device 24 shown in FIG. 5, the first, second, and third chambers 26, 28, and 30 are divided into four spaces. However, the present invention is not particularly limited, and the first chamber 26 and the second chamber If the functional films 16a and 16b can be set so as to be able to seal between the divided chamber 28a of the chamber 28 and between the divided chamber 28b and the third chamber 30 of the second chamber 28, respectively, for example, the functional film 16a and If it can be set by providing a sealable slit that can pass through 16b, the divided chamber 28a of the first chamber 26 and the second chamber 28, and the divided chamber 28b and the third chamber 30 of the second chamber 28 Of course, it may be configured as a single body so that it cannot be divided, and is not limited to the illustrated form.

Thereafter, as shown in FIG. 6, the divided chambers of the first chamber 26 and the second chamber 28 are divided so that the first, second, and third chambers 26, 28, and 30 become independent spaces. 28a, 28b and the third chamber 30 are closed and integrated so as to be separable.
FIG. 7 shows an example of the sealing structure of the pasting device 24 in which the first, second, and third chambers 26, 28, and 30 are independent spaces and are integrated.
As shown in FIG. 7, the sticking device 24 has a rectangular parallelepiped container 38 that defines the first chamber 26, and a double-sided surface that defines the divided chambers 28 a and 28 b of the second chamber 28. And a rectangular parallelepiped container 40a and 40b constituted by a frame, and a rectangular parallelepiped container 42 defining the third chamber 30 and having one surface open.

In the integrated pasting device 24 shown in FIG. 7, the functional film 16a is set on the wall surface 39 of the open end of the container 38 defining the first chamber 26 so as to seal the open surface of the container 38. An O-ring 44 is inserted between the wall surface 39 of the wall 38 and the wall surface 41a at one end of the container 40a that comes into contact with the wall surface 39 through the set functional film 16a. The contact surface is sealed, and the space in the first chamber 26 in the container 38 is sealed.
In addition, an O-ring 44 is interposed between the wall surface 41b at the other end of the container 40a and the wall surface 41c at the one end of the container 40b that contacts the container 40a, both defining the second chamber 28, and the container 40a The contact surface with the container 40b is sealed.

Further, the functional film 16b is set on the wall 43 of the open end of the container 42 defining the third chamber 30 so as to seal the open surface of the container 42. The wall 43 of the container 42 and the set functionality are set. An O-ring 44 is interposed between the other wall surface 41d of the container 40b that contacts the wall surface 43 via the film 16b, and the contact surface between the container 40b and the container 42 is sealed.
As a result, the space in the third chamber 30 in the container 42 is sealed, and the space in the second chamber 28 in the container 40a and the container 40b is sealed.
Note that the suspended portion of the holding jig 18 for setting the lens 12 in the second chamber 28 extends to the outside of the second chamber 28, so that the contact surface between the container 40 a and the container 40 b is sealed. Although not shown, between the suspended portion of the holding jig 18 and the contact surfaces 41b and 41c between the container 40b and the container 42 is also sealed by a known sealing member such as a packing or an O-ring. Needless to say.

  In the example shown in FIG. 7, the functional films 16 a and 16 b are approximately the same size as the container 38 and the container 42 so as to close the open surfaces of the container 38 and the container 42, respectively. (39, 41a) and between the contact surfaces (41d, 43) between the container 40b and the container 42, and the sealing structure is used. However, the present invention is not limited to this, and the container 38 and the container 42 are sealed. The open end side wall surface of the container 38 is extended inward so that the size of the opening surface is larger than the size of the lens 12 but smaller than the size of the open end side end surfaces of the container 38 and the container 42. It is good also as a seal structure which seals between each container, after making functional film 16a and 16b into the small size which can block | close the opening surface which became small.

As shown in FIGS. 6 and 7, after the first, second, and third chambers 26, 28, and 30 of the sticking device 24 are made into independent spaces, respectively, in step S20 shown in FIG. The third chambers 26, 28, and 30 are decompressed. Specifically, in the decompression step S20, as shown in FIGS. 6 and 7, the solenoid valves 34a to 34c of the pipes 32a, 32b and 32c are opened, and the other end of the pipe 32 is connected to a vacuum pump or the like (not shown). Then, the first, second, and third chambers 26, 28, and 30 are passed through the pipes 32, 32a, 32b, and 32c, so that the functionalities of the lens 12 and the functional films 16a and 16b are bonded to each other. The films 16a and 16b are depressurized or evacuated so as not to cause wrinkles or uneven adhesion.
Here, the chambers 26, 28 and 30 are preferably set to a high vacuum degree of 1.333 × 10 ⁻¹ kPa (1 Torr) or less, for example. The reason is that the bonding is performed without leaving any bubbles.

Next, in step S22 shown in FIG. 2, the functional films 16a and 16b are heated. Specifically, in the heating step S22, as shown in FIGS. 6 and 7, the functional films 16a and 16b are heated by the heaters 36a and 36b installed in the first and third chambers 26 and 30, respectively. And soften.
In addition, when functional film 16 (16a and 16b) has some flexibility to the extent that it is not necessary to heat and soften, heating step S22 can be omitted.
If the elongation of the functional film 16 is 400% or more, the heating step S22 can be omitted.
Therefore, what is necessary is just to perform this heating process S22 with respect to the functional film 16 to be used as needed.

  Next, in step S24 shown in FIG. 2, the pressure in the first and third chambers 26 and 30 is increased. Specifically, in the pressure increasing step S24, as shown in FIGS. 6 and 7, only the solenoid valves 34a and 34c of the pipes 32a and 32c are opened, the other end of the pipe 32 is opened, or a pressurizing source (pump In order to prevent the functional films 16a and 16b from causing wrinkles and adhesion unevenness in the first and third chambers 26 and 30 through the pipes 32, 32a and 32c. The pressure in the first and third chambers 26 and 30 is gradually increased and the pressure in the first and third chambers 26 and 30 is increased, and the space in the first and third chambers 26 and 30 is brought to atmospheric pressure or a pressurized state. During the pressure increasing step S24, the space in the second chamber 28 is kept in a reduced pressure state.

As a result, in the pressure increasing step S24, the functional films 16a and 16b are deformed to the both surfaces 12a and 12b side of the adhesive-coated lens 12, approach the both surfaces 12a and 12b of the lens 12, and the adhesive layers 14a and 14b. In close contact, the functional films 16a and 16b are simultaneously bonded to both surfaces 12a and 12b from both sides of the lens 12 via adhesive layers 14a and 14b, respectively.
Thus, the process S16 for attaching the functional film 16 to the lens 12 is completed.
Here, the pressure in each of the first and third chambers 26 and 30 is preferably atmospheric pressure, and more preferably atmospheric pressure or higher. The reason is that the adhesion can be improved by pressure bonding.
During the boosting step S24, the pressure in the first and third chambers 26 and 30 is preferably boosted while maintaining a balance so as to be substantially the same pressure, but when the functional films 16a and 16b are different, The pressure may be increased while applying a pressure difference to the first and third chambers 26 and 30, and there may be a pressure difference even at the time of final application.

Next, in step S <b> 26 shown in FIG. 2, the lens is taken out from the sticking device 24. Specifically, in the lens extracting step S26, at least a space between the two divided chambers 28a and 28b of the second chamber 28 is opened in the attaching device 24 shown in FIGS. 6 and 7, and as shown in FIG. The lens 12 with a functional film to which the functional film 16 is bonded is taken out.
Next, in step S <b> 28 shown in FIG. 2, the film that protrudes from the lens 12 is cut. Specifically, in the film cutting step S28, the protruding functional film 16 (16a, 16b) is cut with respect to the lens 12 with the functional film shown in FIG. In this way, the lens 12 to which the functional film 16 as shown in FIG. 1 is bonded can be obtained.

Next, in step S30 shown in FIG. 2, the adhesive curing of the functional film bonded lens 12 is performed. Specifically, in the adhesive curing step S30, the functional film bonding lens 12 cut in the film cutting step S28 is heated in an oven or the like, and both surfaces 12a and 12b of the functional film bonding lens 12 are heated. Then, the adhesive for the adhesive layers 14a and 14b between the functional films 16a and 16b can be cured to obtain the spectacle lens 10 with a functional film.
Here, since a thermosetting adhesive is used as the adhesive for the adhesive layers 14a and 14b, the adhesive is cured by heating with an oven or the like. However, the adhesive is UV cured. When a functional adhesive is used, the adhesive may be cured by irradiating the functional film bonding lens 12 with ultraviolet rays.
In addition, when the heaters 36a and 36b installed in the first and third chambers 26 and 30 can be heated only to cure the adhesive, an ultraviolet lamp or the like is installed in the first and third chambers 26 and 30. In the manufacturing method shown in FIG. 2, the final adhesive curing step S30 is performed between the pressure increasing step S24 of the sticking process S16 and the lens extracting step S26 in the manufacturing method shown in FIG. You can go.
Thus, the method for manufacturing the optical element including the functional film according to the first embodiment of the present invention shown in FIG. 2 is completed.

By the above manufacturing method, a functional film can be simultaneously bonded to both the first surface and the second surface of the spectacle lens in a series of flows.
Although not shown, the holding tool 18 is suspended from a rail provided on the ceiling, and is moved horizontally and vertically while controlling the amount of movement of a known horizontal movement device and vertical movement device by a known controller. At the same time, the chambers 26, 28a, 28b, and 30 of the sticking device 24 are opened and closed, the electromagnetic valves 34a, 34b, and 34c are opened and closed, the pressure in the sealed spaces in the chambers 26, 28, and 30 is controlled, and the heaters 36a and 36b are turned on and off. By applying a known opening / closing mechanism, for example, a mold opening / closing mechanism, a known switching mechanism, or a known pressure control mechanism, at least the cleaning / drying step with the lens 12 set in the holding tool 18. From S12 to lens extraction step S26 can be performed fully automatically. Note that the amount of movement in the horizontal movement device and the vertical movement device can be controlled using an encoder or the like provided in a rotation driving unit of the horizontal movement device and the vertical movement device, a rotation driving unit of a driving source, or the like.

5 to 7, the first to third chambers 26, 28 (28a, 28b) and 30 are arranged horizontally, but the present invention is not limited to this. Instead, it may be arranged in the vertical direction. In the present invention, the holding of the lens by the holding jig 18 may not be suspended, and if it is horizontal, the sticking device 24 shown in FIGS. 5 to 7 may be arranged in the vertical direction as it is. .
Further, in the example shown in FIG. 2, two functional films are applied to the lens 12 in which an adhesive is applied to both surfaces of the lens 12 in advance and the adhesive is applied to both surfaces using the sticking device 24. However, the present invention is not limited to this. The adhesive is applied to each side of the two functional films in advance, and the two functions are applied to both surfaces of the lens 12. Each adhesive layer of the adhesive film may be bonded from both sides.

(Second Embodiment)
FIG. 9 is a flowchart showing an entire example of a method for manufacturing an optical element including a functional film according to the second embodiment of the present invention.
In the manufacturing method shown in FIG. 9, the manufacturing method shown in FIG. 2, the lens setting process, and the cleaning / drying process are reversed, and the adhesive layer forming process for the functional film is performed instead of the adhesive coating process for the lens. Yes, the sticking device that performs the sticking process is vertical (vertical) instead of horizontal (horizontal), and the adhesive curing process is performed between the pressurization process and the lens removal process of the sticking process. Except for this, it is performed in the same process, and therefore the different parts will be mainly described.

As shown in FIG. 9, first, in step S50, the lens 12 is prepared, and the lens 12 is cleaned and dried. The lens 12 may be cleaned and dried in any way.
Next, in step S52, lens setting is performed as shown in FIG. Specifically, in the lens setting step S52, as shown in FIG. 10, 3 points of the holding jig 52 having an opening having an inner diameter larger than the outer diameter of the lens 12 at the center of the flat plate at three points on the end surface of the lens 12. The lens 12 is set on the holding jig 52 by being supported by the two extendable arms 54. Here, on both sides of the holding jig 52, belt-like conveyance bodies 56 used for horizontal conveyance are attached and used to horizontally convey the lens 12 set on the holding jig 52.
Needless to say, the holding form of the lens 12 by the holding jig 52 is not limited to the holding form shown in FIG.

Next, in step S54 shown in FIG. 9, an adhesive layer is formed on one side of the functional film 16 (16c, 16d). Specifically, in the adhesive layer forming step S54, a double-sided adhesive type adhesive sheet having a predetermined thickness is adhered to one side of the functional film 16 (16c, 16d), and the double-sided adhesive type adhesive sheet is bonded to the adhesive layer. 14 (14c, 14d) is formed.
Next, in step S56, the functional film 16 (16c and 16d) is stuck on both surfaces of the lens 12 using the sticking device 58 shown in FIGS. Specifically, in the sticking step (process) S56, first, as shown in FIG. 10, the belt 12 is conveyed in a state where the lens 12 is set on the holding jig 52 to the sticking device 58 in which each chamber is divided and opened. Horizontally transported and set by the body 56 (step S58), each chamber divided as shown in FIG. 6 is closed, and each chamber is depressurized (step S60), heated (step S62), and pressurized (atmospheric pressure) Opening or pressurization) (step S64) is performed, and functional films 16 (16c and 16d) are attached to both surfaces (12a and 12b) of the lens 12, respectively.

The pasting device 58 shown in FIGS. 11 and 12 is for carrying out the pasting process S56 including the device setting step S58, the pressure reducing step S60, the heating step S62, and the pressure raising step S64 shown in FIG. Three chambers each having a space divided into four spaces (a rectangular parallelepiped space, a cylindrical space, etc.), a second chamber 62 and a third chamber 64 each composed of two divided chambers 62a and 62b, are stacked in the vertical direction. It has a vertical structure.
In addition, pipes 32 a, 32 b and 32 c are connected to the first, second and third chambers 60, 62 and 64, respectively, and are connected to the main pipe 32.
11 and 12 is similar to the sticking device 24 shown in FIGS. 5 to 7, and is oriented to the device (vertical / horizontal), chamber shape (cuboid / cylindrical), heater shape (vertical / cylindrical). Type) and the lens set direction (vertical hanging / horizontal) are the same except for the apparatus, and the same description is omitted.

In the apparatus setting step S58 of the affixing process S56 shown in FIG. 9, the affixing apparatus 58 includes the first chamber 60, the divided chambers 62a and 62b of the second chamber 62, and the third chamber 64, as shown in FIG. It is divided into two chamber spaces. The lens 12 set on the holding jig 18 in the lens setting step S52 in the space between the divided chambers 62a and 62b divided into two in a sealable manner in the second chamber 62 in that state by the belt-like carrier 56. Set horizontally.
At the same time, in the adhesive layer forming step S54, the functional film 16 (16c, 16d) in which the adhesive layer 14 (14c, 14d) is formed by adhering the adhesive sheet to one side thereof is divided in a sealable manner. In the space between the chamber 60 and the divided chamber 62a of the second chamber 62, and the space between the divided chamber 62b and the third chamber 64 of the second chamber 62 divided in a sealable manner, the adhesive layer 14 (14c, 14d) is set toward the lens 12.
Here, the functional films 16c and 16d may be the same functional film, or may be different functional films having different functionalities, and are appropriately selected according to the use of the spectacle lens. do it.

Thereafter, as shown in FIG. 12, the divided chambers of the first chamber 60 and the second chamber 62 are divided so that the first, second, and third chambers 60, 62, and 64 become independent spaces. 62a, 62b and the third chamber 64 are closed and integrated so as to be divided.
The first, second, and third chambers 60, 62, and 64 become independent spaces, and the integrated sticking device 58 has a seal structure shown in FIG.
As shown in FIGS. 11 and 12, the sticking device 58 includes a rectangular parallelepiped container 66 that defines the first chamber 60, and a double-sided surface that defines the divided chambers 62 a and 62 b of the second chamber 62. And a rectangular parallelepiped container 68a and 68b configured by an open frame, and a rectangular parallelepiped container 70 that defines the third chamber 64 and is open on one side.

In the integrated sticking device 58 shown in FIG. 12, the functional film 16c is set on the wall surface 67 of the open end of the container 66 defining the first chamber 60 so as to seal the open surface of the container 66. The O-ring 44 is inserted between the wall surface 67 of the container 66 and the wall surface 69a at one end of the container 68a that comes into contact with the wall surface 67 through the set functional film 16c. The contact surface is sealed, and the space in the first chamber 60 in the container 66 is sealed. At this time, the adhesive layer 14c is preferably smaller in size (smaller diameter) than the size (diameter) of the functional film 16c so that the O-ring 44 is not adhered to the adhesive layer 14c of the functional film 16c.
In addition, an O-ring 44 is inserted between a wall surface 69b at the other end of the container 68a and a wall surface 69c at the one end of the container 68b that contacts the container 68a, both defining the second chamber 62, and the container 68a The contact surface with the container 68b is sealed.

A functional film 16d is set on the wall surface 71 of the open end of the container 70 that defines the third chamber 64 so as to seal the open surface of the container 70, and the wall surface 71 of the container 70 and the set functionality are set. An O-ring 44 is interposed between the other wall surface 69d of the container 68b that contacts the wall surface 71 via the film 16d, and the contact surface between the container 68b and the container 70 is sealed. Also at this time, the adhesive layer 14d is preferably smaller in size (smaller diameter) than the size (diameter) of the functional film 16d so that the O-ring 44 is not adhered to the adhesive layer 14d of the functional film 16d.
Thus, the space in the third chamber 64 in the container 70 is sealed, and the space in the second chamber 62 in the container 68a and the container 68b is sealed.
The holding jig 52 and the belt-like transport body 56 for setting the lens 12 in the second chamber 62 extend to the outside of the second chamber 62 on both sides, so that the contact surfaces of the container 68a and the container 68b Although not shown in the figure, the gap between the holding jig 52 and the belt-like transport body 56 and the contact surfaces 69b and 69c of the container 68b and the container 70 is also sealed by a known sealing member such as packing or O-ring. Needless to say, it is sealed.

As shown in FIG. 12, after the first, second, and third chambers 60, 62, and 64 of the sticking device 58 are made into independent spaces, the first, second, and third chambers in step S60 shown in FIG. Depressurize 60, 28, and 30. Specifically, in the decompression step S60, the first, second, and third chambers 60, 62, and 64 are passed through the pipes 32, 32a, 32b, and 32c, and both surfaces of the lens 12 and the functional films 16c and 16d are connected. During adhesion, the functional films 16c and 16d are depressurized or evacuated so as not to cause wrinkles or uneven adhesion.
Next, in step S62, the functional films 16c and 16d are heated. Specifically, in the heating step S62, as shown in FIG. 12, the functional films 16c and 16d are heated by the cylindrical heaters 72a and 72b installed in the first and third chambers 60 and 64, respectively. And soften.
In addition, when the functional film 16 (16c and 16d) has some flexibility to the extent that it does not need to be heated and softened, the heating step S22 can be omitted. Therefore, what is necessary is just to perform this heating process S22 with respect to the functional film 16 to be used as needed.

Next, in step S64, the pressure in the first and third chambers 60 and 64 is increased. Specifically, in the pressure increasing step S64, as shown in FIG. 12, a gas such as air is passed through the pipes 32, 32a and 32c into the first and third chambers 60 and 64 and into the functional films 16c and 16d. The pressure in the first and third chambers 60 and 64 is gradually increased by introducing slowly so as not to cause wrinkles, adhesion unevenness and the like, and the space in the first and third chambers 60 and 64 is changed to atmospheric pressure or Apply pressure. During the pressure increasing step S64, the space in the second chamber 62 is kept in a reduced pressure state.
As a result, in the pressure increasing step S64, the functional films 16c and 16d having the adhesive layers 14a and 14b are deformed to the both surfaces 12a and 12b side of the lens 12, and the adhesive layers 14a and 14b are changed to the both surfaces 12a and 12b of the lens 12. The functional films 16c and 16d are simultaneously bonded to both surfaces 12a and 12b from both sides of the lens 12 via the adhesive layers 14a and 14b, respectively, in close contact with 12b.
Thus, the process S56 for attaching the functional film 16 to the lens 12 is completed.

Next, in step S <b> 66, the adhesive curing of the functional film pasting lens 12 is performed in the pasting device 58. Specifically, in the adhesive curing step S <b> 66, the functional film-equipped lens 12 to which the functional film 16 is bonded is used using the heaters 72 a and 72 b installed in the first and third chambers 60 and 64. By heating, the adhesive of the adhesive layers 14c and 14d between the both surfaces 12a and 12b of the lens 12 and the functional films 16c and 16d is cured. When an ultraviolet curable adhesive is used as the adhesive for the adhesive layers 14c and 14d, the adhesive may be cured by irradiating the functional film bonding lens 12 with ultraviolet rays.
Next, in step S68, the lens is taken out from the sticking device 58. Specifically, in the lens extraction step S68, a function in which at least the two divided chambers 62a and 62b of the second chamber 62 of the attaching device 58 shown in FIG. The lens 12 with the adhesive film is horizontally transported by the belt-shaped transport body 56 while being held by the holding jig 52 and is taken out from the sticking device 58.

Next, in step S70, the film cut that protrudes from the lens 12 is performed. Specifically, in the film cutting step S <b> 70, the protruding functional film 16 (16 c, 16 d) is cut from the lens 12 with the functional film with the end face of the lens 12 as a mark. In this way, the functional film-equipped spectacle lens 10 including the functional film 16 as shown in FIG. 1 can be obtained.
Thus, the manufacturing method of the optical element including the functional film according to the second embodiment of the present invention shown in FIG. 9 is completed.
In the manufacturing method shown in FIG. 9 as well, a series of automation is performed by using a sticking device 58 that is automatically controlled and horizontally transporting the lens 12 by a belt-shaped transport body such as a conveyor belt while the lens 12 is set on the holding tool 52. According to this flow, at least the apparatus setting step S12 to the lens taking-out step S26 can be performed fully automatically, and the functional film can be simultaneously applied to both the first surface and the second surface of the spectacle lens.

  As mentioned above, although the various embodiment and the Example were given and demonstrated about the manufacturing method of the optical element provided with the functional film which concerns on this invention, this invention is not limited to the above-mentioned embodiment and an Example, this It goes without saying that various improvements and design changes may be made without departing from the gist of the invention.

10 Glasses lens (optical element) with functional film
12 Glasses lens (lens)
12a, 12b Main surfaces 14, 14a, 14b, 14c, 14d Adhesive layers 16, 16a, 16b, 16c, 16d Functional films 18, 52 Holding jigs 18a, 54 Arm 20 Adhesive tank 22 Liquid adhesives 24, 58 Adhering device 26, 28, 30, 60, 62, 64 Chambers 28a, 28b, 62a, 62b Divided chambers 32, 32a, 32b, 32c Piping 34a, 34b, 34c Solenoid valves 36a, 36b, 72a, 72b Heaters 38, 40a, 40b, 42, 66, 68a, 68b, 70 Container 44 O-ring 56 Band-shaped carrier

Claims (12)

Using a first chamber that forms a sealed space, a second chamber that can be opened and closed, and a third chamber, respectively, a bonding step of simultaneously bonding two functional films to both surfaces of the optical element respectively with an adhesive A method for producing an optical element comprising a functional film,
The affixing step includes
After opening the second chamber and setting the optical element on the both surfaces with the end face held by a holding jig in the second chamber, closing the second chamber;
After disposing the two functional films between the first chamber and the second chamber, and between the second chamber and the third chamber, and making each chamber a sealed space,
Each of the first chamber, the second chamber, and the third chamber is depressurized to maintain a predetermined pressure,
Gases are introduced into the first chamber and the third chamber to increase the pressure inside the two chambers, and the two functional films are respectively formed on both surfaces of the optical element set in the second chamber from both sides. Are contacted via the adhesive, and the two functional films are simultaneously pasted to the both surfaces of the optical element by the adhesive,
An optical element manufacturing method, wherein an adhesive layer made of the adhesive is formed on at least one of both surfaces of the optical element and the two functional films.   After depressurizing the first chamber, the second chamber, and the third chamber, respectively, before the gas is introduced into the first chamber and the third chamber, they are arranged on both sides of the optical element. The method of manufacturing an optical element according to claim 1, wherein the two functional films are heated to be flexible. After the pasting step,
Opening the second chamber and taking out the optical element with a functional film in which the two functional films are bonded to both surfaces, respectively,
While removing the optical element with a functional film from the holding jig, a cutting step of cutting the functional film protruding from the optical element,
After the cutting step, there is a curing step of curing the adhesive layer between the two functional films and both surfaces of the optical element to manufacture the optical element having the functional film. The method of manufacturing an optical element according to claim 1 or 2. After the pasting step,
A curing step of curing each of the adhesive layers between the two functional films and both surfaces of the optical element;
After the curing step, the second chamber is opened, and the functional film-attached optical element with the two functional films attached to the both surfaces is taken out,
A step of removing the optical element with the functional film from the holding jig, and cutting the functional film protruding from the optical element to produce an optical element having the functional film. The manufacturing method of the optical element of Claim 1 or 2. The adhesive layer is formed in advance on both surfaces of the optical element before the attaching step,
The holding jig hangs and holds the optical element,
The optical element having the adhesive layer formed on both surfaces in advance is set in the second chamber with its end face held by a holding jig,
The method for manufacturing an optical element according to claim 1, wherein the first chamber, the second chamber, and the third chamber are arranged in a horizontal direction. Before the attaching step,
Holding the end face of the optical element with the holding jig and setting the optical element on the holding jig; and
In the state of being set on the holding jig, the optical element is washed and dried,
6. The coating step of applying an adhesive to the dried optical element and forming the adhesive layer on both surfaces of the optical element in a state of being set on the holding jig. Of manufacturing the optical element. In the cleaning step, the optical element held by being suspended by the holding jig is immersed in a cleaning liquid in a cleaning tank and cleaned, and then dried.
In the coating step, the optical element suspended and held by the holding jig is dipped in an adhesive liquid in an adhesive tank and pulled up to apply the adhesive to the optical element to a predetermined thickness, The method of manufacturing an optical element according to claim 6, wherein the adhesive layer having the predetermined thickness is formed on both surfaces of the optical element. The holding jig is for holding the optical element horizontally,
The adhesive layer is previously formed on one side of the two functional films,
The two functional films each having the adhesive layer formed on one side thereof are disposed between the first chamber and the second chamber and between the second chamber and the third chamber, respectively. And
The method of manufacturing an optical element according to claim 1, wherein the first chamber, the second chamber, and the third chamber are arranged in a vertical direction. Before the attaching step,
A cleaning step of cleaning and drying the optical element;
Holding the end face of the optical element with the holding jig and setting the optical element on the holding jig; and
The method for producing an optical element according to claim 8, further comprising: an adhesive layer forming step of forming the adhesive layer on one side of the two functional films in advance.   The adhesive layer forming step is characterized in that a double-sided adhesive type adhesive sheet is attached to one side of each of the two functional films to form the adhesive layer having the predetermined thickness. Item 8. A method for producing an optical element according to Item 7.   The method of manufacturing an optical element according to claim 1, wherein the optical element is an optical lens or a spectacle lens.   The method of manufacturing an optical element according to claim 11, wherein the spectacle lens is a spectacle lens that has already been finished to a desired power.