JP2006195073A - Method of manufacturing lens with built-in hologram element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a lens with built-in hologram element by which an adhesive swelled out of a joint part between a hologram optical base material having a hologram element and an optical base material is easily removed in a short period of time without causing flaws. <P>SOLUTION: The method of manufacturing the lens with built-in hologram element comprises: a coating layer forming process that forms coating layers 104a, 107a on a peripheral part of a joint surface 102a of the hologram optical base material L100 and a peripheral part of a joint surface 105a of the optical base material L2; an adhesive applying process that applies the adhesive AD on the joint surface of at least one side of the hologram optical base material L100 or the optical base material L2; a lens joining process that joins the joint surface 102a of the hologram optical base material L100 to the joint surface 105a of the optical base material L2 and swells out the adhesive AD to the upper surfaces of the coating layers 104a, 107a; and an adhesive removal process that hardens the adhesive and, thereafter, removes the hardened adhesive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a lens with a built-in hologram element.

In recent years, eyeglass-type wearable displays (hereinafter referred to as WD) and head-mounted displays (hereinafter referred to as HMD) for the purpose of improving workability by hand-free and information retrieval, visual acuity correction for low-sighted people, various amusement experiences, and the like. ) Is being developed.
An WD or HMD lens is provided with an optical substrate for optically guiding the image from the display unit to the eyes. This optical base material is provided with a hologram element as a reflective film for reflecting an image such as an LCD or an organic EL in front of the eyes and displaying the image superimposed on the foreground.

  A WD or HMD that uses a hologram element is lighter and consumes less power than a hologram element that does not use a hologram element, and can withstand long-term use. Furthermore, it is possible to use a see-through type in which a real image of a real landscape and a virtual image of a hologram image can be seen at the same time without using a prism to block the front view.

  Then, a hologram element built-in lens is formed by adhering and combining an optical base material (hereinafter referred to as a “hologram optical base material”) to which the hologram element is attached to the optical base material using an adhesive or the like. To do. In this bonding process, if the bonding part is not sufficiently filled with adhesive, when external force is applied to the hologram element built-in lens, stress concentration occurs in the insufficiently filled part of the adhesive, resulting in a decrease in adhesive strength. There is a fear of inviting, and there is a problem that the refractive index of the hologram optical base material and the optical base material is different from that of the joint portion, which is further inferior in appearance. Therefore, it is necessary to fill the joint with a sufficient amount of adhesive and then press-contact it so as to protrude the excess and remove the protruded adhesive.

As a measure for removing the protruding adhesive, for example, the edge of the first plate protrudes outward from the second plate, and the adhesive protruding from between the joints at the time of bonding is cured, and then the first plate Synthetic resin plate cross-joining method (see Patent Document 1) that cuts and removes the protruding portion together with the protruding portion of the adhesive, light is applied to the bonding surface, the adhesive is cured, and both arrays are temporarily fixed, Next, a method of manufacturing a detector for an X-ray CT scanner in which the adhesive protruding from the outer edge of the adhesive surface is wiped off and then the adhesive surface is irradiated with light to cure the adhesive and permanently fix both arrays. Reference 2) is disclosed.
JP-A-5-84832 JP-A-6-308249

  However, when the method of cutting and removing the protruding portion as in Patent Document 1 is used for the method of removing the adhesive after the bonding process between the hologram optical substrate and the optical substrate, the cured adhesive, the hologram optical substrate, and If there is a difference in hardness from the optical base material, there is a problem that the blade of the tool may bite into a softer one and cause scratches, which makes it impossible to use as a lens. Further, in the method of wiping off the protruding portion as in Patent Document 2, since the curing proceeds even during the wiping operation, it is difficult to completely wipe off, and the work efficiency and the production efficiency are reduced.

  An object of the present invention is to provide a hologram element-containing lens manufacturing method that easily and quickly removes an adhesive protruding from a joint between a hologram optical substrate having a hologram element and the optical substrate without scratching the adhesive. Is to provide.

  According to the first aspect of the present invention, a hologram element is formed on the bonding surface of the first optical substrate, and the first optical substrate is sandwiched between the hologram element and the bonding surface of the second optical substrate. In the method of manufacturing a hologram element built-in lens for manufacturing a lens with a built-in hologram element by bonding the second optical substrate and the second optical substrate, before bonding the first optical substrate and the second optical substrate, A coating layer forming step of forming a coating layer on the outer surfaces of the first optical substrate and the second optical substrate in the vicinity of the bonding surface, and the first optical substrate and the second optical substrate on which the coating layer is formed An adhesive application step of applying an amount of adhesive that protrudes from the joint surface when the first optical base material and the second optical base material are joined to at least one of the joint surfaces with the material; After the curing, the first optical substrate and the second optical It cemented surface the end surface of the wood is a manufacturing method of the hologram elements incorporated lens characterized by comprising a bonding agent removing step of removing the adhesive protruding on the coating layer, it is characterized in.

  According to a second aspect of the present invention, in the method of manufacturing a hologram element built-in lens according to the first aspect, in the coating layer forming step, the coating layer is in a liquid or semi-liquid state and can be removed by washing. It is characterized by being formed by coating.

  The invention described in claim 3 is the method for manufacturing a hologram element built-in lens according to claim 2, wherein the property is a silicone agent.

  Invention of Claim 4 protruded on the said coating layer from the said joint surface in the manufacturing method of the hologram element built-in lens as described in any one of Claim 1 to 3 after the said adhesive agent coating process. The adhesive includes a peeling piece bonding step of bonding the peeling piece as a clue member when removing the protruding adhesive.

  According to a fifth aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to the fourth aspect, in the adhesive removing step, the adhesive protruding on the coating layer is peeled off using the release piece as a clue. To remove the protruding adhesive.

  According to a sixth aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to any one of the second to fifth aspects, the property as the coating layer is removed by washing after the adhesive removing step. It is characterized by.

  According to a seventh aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to the first aspect, in the coating layer forming step, the coating layer is disposed outside the first optical substrate and the second optical substrate. It is characterized by being formed by sticking a film-like sheet material on the surface.

  According to an eighth aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to the seventh aspect, after the adhesive application step, the adhesive protruded from the joint surface onto the coating layer. It is characterized by including a peeling piece bonding step of bonding the peeling piece as a clue member at the time of removing the adhesive.

  According to a ninth aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to the seventh aspect, before the coating layer forming step, in the vicinity of the joint surface between the first optical base material and the second optical base material And a peeling piece installation step of providing a peeling piece as a clue member at the time of removing the protruding adhesive on the outer surface and below the coating layer.

  According to a tenth aspect of the present invention, in the method for manufacturing a hologram element built-in lens according to the eighth or ninth aspect, the adhesive removing step is performed together with the coating layer by peeling off the coating layer with the peeling piece as a clue. The protruding adhesive is removed.

  According to the first aspect of the present invention, the adhesive protrudes from the upper surface of the coating layer on the outer surface in the vicinity of the bonding surface of the first optical substrate and the bonding surface of the second optical substrate, and is cured. Since the adhesive can be easily removed, it is possible to prevent the adhesive from being directly attached and cured on the outer surface in the vicinity of the bonding surface of the first optical base and the second optical base, scratches, etc. It is possible to provide a method of manufacturing a lens with a built-in hologram element that can be removed easily and in a short period of time without adding a mark.

  According to the second aspect of the present invention, the effect similar to that of the first aspect can be obtained, and the coating layer is formed by applying a liquid or semi-liquid film which can be removed by washing. can do.

  According to the third aspect of the present invention, the effect similar to that of the second aspect can be obtained, and a silicone agent can be used as a property, and a coating layer can be easily formed.

  According to the invention described in claim 4, it is possible to obtain the same effect as in any one of claims 1 to 3, as well as to remove the adhesive that has easily protruded by bonding the peeling piece. A clue can be obtained.

  According to the fifth aspect of the invention, it is possible to obtain the same effect as that of the fourth aspect of the invention, as well as adhesion that easily protrudes by peeling off the adhesive that protrudes from the coating layer using the release piece as a clue. The agent can be removed.

  According to the sixth aspect of the invention, the same effect as in any one of the second to fifth aspects can be obtained, and after the adhesive removing step, the property as the coating layer is washed. By removing, the adhesive can be removed without damaging the surfaces of the hologram optical substrate and the second optical substrate.

  According to the seventh aspect of the invention, the same effect as in the first aspect can be obtained, and the film layer is formed on the outer surfaces of the first optical base and the second optical base. It can be formed by sticking a material.

  According to the eighth aspect of the invention, the same effect as that of the seventh aspect can be obtained, and the exfoliation can be easily carried out by adhering the peeling piece to the adhesive protruding from the joint surface onto the coating layer. A clue for removing the adhesive can be obtained.

  According to the ninth aspect of the invention, it is possible to obtain the same effect as that of the seventh aspect, but also on the outer surface in the vicinity of the bonding surface of the first optical base material and the second optical base material and of the coating layer. By providing the peeling piece at the lower part, a clue for removing the adhesive that has easily protruded can be obtained.

  According to the tenth aspect of the present invention, it is possible to remove both the adhesive and the coating layer protruding from the upper surface of the coating layer at the same time, as well as to obtain the same effect as the eighth or ninth aspect. Therefore, the work efficiency can be improved.

Hereinafter, a method for manufacturing a hologram element built-in lens according to the present invention will be described with reference to FIGS.
The manufacturing method of the hologram element built-in lens 200, which is a hologram optical lens, forms an optical substrate L1 as a first optical substrate and an optical substrate L2 as a second optical substrate in a predetermined shape, and the optical substrate L1. An optical base material forming step (1) for forming an inclined surface at one end of the optical base material, and forming a hologram element 100 on the inclined surface formed at one end of the optical base material L1, thereby forming a hologram optical base material L100 as an eyepiece optical unit. A hologram optical base material forming step (2) to be formed and an integration step (3) for integrating the hologram optical base material L100 with the optical base material L2 as the second optical base material are included. However, the scope of the invention is not limited to the illustrated examples.

(1) Optical base material formation process An example of the shape of the optical base material L1 and the optical base material L2 is shown in FIG. Here, the direction in which an optical lens is attached to a spectacle frame and a pupil when a human wears it is referred to as a back direction, and the direction in which a visible image is present is referred to as a front direction.
The optical substrate forming process includes an injection mold process, an injection compression molding process, a cutting process, a polishing process, and the like. In the optical base material forming process such as an injection mold process, the optical base material L1 and the optical base material L2 are formed in a predetermined shape. At this time, an inclined surface to be formed on the hologram element is formed by attaching the hologram sensitive material to one end of the optical substrate L1. Moreover, the shape of the optical base material L2 is formed corresponding to the external shape of the optical base material L1.

The inclined surface 101 to which the island-shaped portion 19 of the hologram sensitive material formed at one end of the outer shape of the optical base material L1 is attached is a human pupil when the hologram element built-in lens 200 is mounted as WD, HMD or the like. It is formed so as to have an inclination angle capable of guiding a hologram image.
The optical base material L1 is preferably formed before the attaching step of the hologram optical base material forming step.

  Moreover, when forming the optical base material L2 which is a 2nd optical base material which has a recessed part as shown in FIG. 1, the recessed part which forms a recessed part corresponding to the external shape of the optical base material L1 Preferably a forming step is included. When integrating the optical base material L1 and the optical base material L2 by pick-and-place or the like, the outer shape of the optical base material L1 and the recessed portion of the optical base material L2 can be easily fitted, and the substantially circular shape can be obtained. This is because the hologram element built-in lens can be formed, and the hologram element built-in lens 200 having a shape corresponding to the needs of the user can be formed by cutting. Moreover, it is preferable that formation of the optical base material L2 is formed before the adhesion process of an integration process.

The optical base material L1 and the optical base material L2 which are formed by the recess formation process shown in FIG. 1 will be described.
On the surface of the optical base material L1 in the downward direction and the both side surface directions, a joint surface 102 is formed that is joined when the optical base material L1 is fitted into the recessed portion of the optical base material L2. This externally shaped joining surface 102 is composed of a joining surface 102a in the downward direction, a joining surface 102b in the right side direction in the front direction, and a joining surface 102c in the left side direction in the front direction.
A concave portion corresponding to the outer shape joining surface 102 of the optical base material L1 is formed at the center of the optical base material L2. The concave portion includes corresponding joint surfaces 105a, 105b, and 105c so that the joint surface 102a, the joint surface 102b, and the joint surface 102c can be joined.

  2A and 2B illustrate examples of the shapes of the joining surfaces 102 and 105 of the first optical base material and the second optical base material. You may form the recessed part 110, a micro recessed part, and the pear grain 100e in the joint surfaces 102 and 105 at an optical base material formation process. Moreover, you may form the recessed part 110 so that it may communicate with the exterior to either one or both surfaces at the joint surface of an optical base material. The number of recesses 110 to be formed is not particularly limited. The shape of the recess is not particularly limited, but is preferably a polygonal and / or semicircular shape. By this, the adhesive force of optical base materials can be strengthened. Further, the adhesive can uniformly penetrate the entire joining surfaces 102 and 105. Further, it is possible to reduce the adhesive that protrudes from the lens surface.

(2) Hologram optical substrate forming step The hologram optical substrate forming step includes (a) a laminated sheet forming step, (b) a cutting step, (c) a first peeling step, (d) a pasting step, and (e) a second. The hologram optical material L100 is formed by forming the island-like portion 19 of the hologram sensitive material pasted on the inclined surface 101 of the optical substrate L1 on the hologram element 100, comprising the peeling step, (f) exposure step, and (g) development step. Form.

  (A) In the laminated sheet forming step, the hologram sensitive material sheet is detachably bonded between the pair of protective sheets to form a laminated sheet formed in a cross-sectional sandwich shape. (B) In the cutting step, an incision is made from the outer surface side of any one of the protective sheets to the depth at which the hologram sensitive material sheet is cut at least in the thickness direction of the laminated sheet, and the island-shaped portions 19 are formed in the hologram sensitive material sheet. Make a half cut as follows. (C) A 1st peeling process peels one protective sheet from a hologram photosensitive material sheet. (D) In the attaching step, the island-shaped portion 19 of the hologram sensitive material is attached to the inclined surface 101 of the optical substrate L1 that is the first optical substrate with the island-like portion 19 attached to the other protective sheet. (E) In the second peeling step, only the island-shaped portion 19 of the hologram photosensitive material is left on the inclined surface 101 of the optical substrate L1 that is the first optical substrate, and the hologram photosensitive material together with the other protective sheet is left. Peel the ladder. (F) An exposure process exposes a laser beam to the island-shaped part 19 of the hologram sensitive material affixed on the inclined surface 101 of the optical base material L1 which is a 1st optical base material after a 2nd peeling process. (G) In the developing step, the exposed island portions 19 are developed.

(3) Integration Step Hereinafter, an integration step for combining the hologram optical base material L100 with the optical base material L2 for integration will be described.

  The integration step includes an optical base material forming step for forming the optical base material L2 as the second optical base material so as to correspond to the outer shape of the optical base material L1 as the first optical base material, and a hologram on the optical base material L2. It is comprised from the adhesion | attachment process etc. which adhere | attach the optical base material L100.

The optical substrate forming step is described in the above (1) Optical substrate forming step.
The bonding step is a third peeling step for peeling the barrier sheet 3 bonded to the surface of the hologram element 100 of the hologram optical substrate L100, and bonding the two before joining the hologram optical substrate L100 and the optical substrate L2. A coating layer forming step of forming a coating layer on the outer surface in the vicinity of the surface, and at least one of the bonding surface between the hologram optical substrate L100 and the optical substrate L2 on which the coating layer is formed, and the hologram optical substrate L100 and optical An adhesive application step of applying an amount of adhesive that protrudes from the joint surface when the base material L2 is joined, the joint surface 102 of the hologram optical base material L100 and the joint surface 105 of the optical base material L2 are joined, and the upper surface of the coating layer The lens bonding process that causes the adhesive to protrude, the adhesive curing process that cures the adhesive, and the adhesive removal work that removes the cured adhesive that protrudes onto the coating layer And an outer surface in the vicinity of the bonding surface between the hologram optical base material L100 and the optical base material L2 before the stripping piece bonding step or the coating layer forming step. It consists of various processes including any of the peeling piece installation process which provides a peeling piece on the upper part and the lower part of the coating layer formed.

  The coating layer is formed depending on whether it is formed by applying a liquid or semi-liquid and removable property that can be removed by washing, and when it is formed by applying a film-like sheet material.

  (A) An adhesion process in the case where the coating layer is formed by applying a liquid or semi-liquid film and can be removed by washing will be described with reference to FIGS.

  3 is an external view of the hologram optical base material L100 and the optical base material L2 before the lens joining step, FIG. 4 is an external view of the hologram optical base material L100 and the optical base material L2 after the lens joining step, and FIG. The AA sectional view of Drawing 4 in each process of an adhesion process is shown.

First, a coating layer forming process is performed.
As shown in FIGS. 3 and 5A, the coating process is performed in a liquid or semi-liquid manner on the peripheral portions 103 and 106 on the outer surface in the vicinity of the joining surfaces 102 and 105 of the hologram optical base material L100 and the optical base material L2. A silicone agent, which is a property that can be removed by washing, is applied by spraying or brushing to apply a silicone coating, and coating layers 104 a and 107 a of the silicone agent are formed on the peripheral portions 103 and 106. In addition, it is preferable to apply a silicone agent after masking as a measure for preventing erroneous application to unnecessary portions.

  As a characteristic of the formed coating layer, it has releasability and non-adhesiveness, has a small intermolecular force at the interface, and has a characteristic of reducing the adhesive strength of the adhesive when the adhesive is peeled off. preferable.

  As the silicone agent, for example, silicone oil can be used. Examples of silicone oil include straight silicone oil bonded with a methyl group, a phenyl group, and a hydrogen atom as a substituent, and modified silicone oil having a component in which a substitution machine is introduced at the side chain and terminal of straight silicone oil. However, a modified silicone oil is preferable in order to improve releasability. The modified silicone oil is classified into non-reactive and reactive, and a reactive silicone oil having a reactive substituent is more preferable. As the reactive silicone oil, amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, and alcohol-modified silicone oil are most preferable.

  As described above, since the coating layers 104a and 107a are formed by the silicone coating process, the coating layers 104a and 107a are directly bonded to the peripheral portions 103 and 106 on the outer surfaces of the joining surfaces 102 and 105 of the hologram optical base material L100 and the optical base material L2. It is possible to easily prevent the agent AD from being attached and cured.

Next, an adhesive application process is performed.
In the adhesive application step, as shown in FIG. 5B, the hologram optical substrate L100 and the optical substrate L2 are bonded to at least one of the bonding surfaces of the hologram optical substrate L100 and the optical substrate L2. The amount of adhesive AD that protrudes from the joint surface when applied is applied. In the example shown in FIG. 5B, a case where the adhesive AD is applied to the bonding surface 105a of the optical substrate L2 is shown.

  The adhesive AD may be any adhesive that exhibits the same refractive index as the optical refractive index of the optical substrate when cured. Among these, a photocurable adhesive, particularly an ultraviolet curable adhesive is preferable. This is because curing can be performed by irradiating light energy such as ultraviolet rays, and the optical base material L1 and the optical base material L2 in the range of the optical refractive index can be selected. Further, the ultraviolet curable adhesive is preferable because it hardly erodes the surfaces of the optical substrate L1 and the optical substrate L2. In particular, acrylic PMMA and polycarbonate PC are preferable because they are included in the refractive index range of the optical substrate L1 and the optical substrate L2. For example, Norland product NOA series or EMI product OPTOCAST3400 series.

After the adhesive application step, a lens bonding step is performed.
In the lens bonding step, as shown in FIGS. 3, 4, and 5 (c), at least one of the hologram optical base material L <b> 100 and the optical base material L <b> 2 is moved in the front direction or the back direction, The joint surface 102 and the joint surface 105 of the optical base material L2 are fitted in combination and joined. At the time of joining, the excess adhesive AD1 protrudes from the upper surfaces of the coating layers 104a and 107a by press-contacting so that the joining surface 102 and the joining surface 105 are in close contact with each other.

After the lens bonding step, a peeling piece bonding step is performed.
As shown in FIGS. 4 and 5 (d), the peeling piece bonding process is performed by removing the peeling piece on the surplus adhesive AD1 protruding from the upper surface of the coating layer before the adhesive AD is cured after the lens bonding process. Glue.

  The release piece is a clue member for removing the excess adhesive AD1, and is preferably made of a flexible and thin material having high bending and elongation strength. For example, polyethylene (PE), polyethylene terephthalate (PET), polypropylene Examples thereof include a film made of (PP) and polystyrene (PS), and a thick metal foil made of stainless steel (SUS), aluminum (Al), copper (Cu), and the like.

  In addition, the position where the peeling piece is provided is not limited to the position shown in FIG. 4, and it is preferable to provide the peeling piece in the vicinity of the peripheral edge where the two joining surfaces intersect with each other in order to improve the removal efficiency of the excess adhesive AD1.

After the peeling piece bonding step, an adhesive curing step is performed.
The adhesive curing step irradiates the fitted joint surface to which the adhesive AD is applied with a certain amount of time and a certain amount of light to cure the adhesive. When an ultraviolet curable adhesive is used as the adhesive AD, it is cured by irradiating with ultraviolet rays.

An adhesive curing mechanism (not shown) includes an optical lens support unit for fixing the optical substrate L2 fitted with the hologram optical substrate L100, an adhesive curing irradiation unit for curing the adhesive, a temperature control unit, A control unit or the like for controlling these is provided.
In the adhesive curing irradiation section, a light source is disposed above and / or below the optical substrate L2 into which the hologram optical substrate L100 is fitted. Examples of the light source include a low-pressure or high-pressure mercury lamp, an ultraviolet lamp, a black light, a fluorescent lamp, and natural light. The temperature control unit includes a thermostat for baking, and an adhesive curing irradiation unit is disposed in the thermostat. The curing of the adhesive is adjusted by controlling the control unit, the irradiation time of the light source, the irradiation amount, the irradiation intensity, the heating time, the temperature range, and the like.

After the adhesive curing step, an adhesive removing step is performed.
The adhesive removing step includes an adhesive peeling step of peeling off the excess adhesive AD1 that has been protruded and cured on the upper surfaces of the coating layers 104a and 107a, and a coating layer removing step of removing the coating layers 104a and 107a after the adhesive peeling step. Including.

  In the adhesive peeling step, as shown in FIG. 5 (e), the peeling piece P is peeled off from the outer surfaces of the hologram optical base material L100 and the optical base material L2, whereby the peeling piece P is adhered and cured. The adhesive AD1 is peeled off from the coating layers 104a and 107a as the peeling piece P moves.

  In the coating layer removal step, as shown in FIG. 5 (f), a method of applying and cleaning a solvent that dissolves the coating layers 104a and 107a formed on the peripheral portions 103 and 106, or cleaning with a detergent is used. It is the process of removing by a method. In view of working efficiency, it is preferable to use a solvent.

As a solvent for dissolving the coating layers 104a and 107a using the silicone agent, it is preferable to dissolve only the coating layer without affecting the optical substrate.
Examples thereof include solvents such as toluene, xylene, cyclohexane, gasoline, kerosene, mineral spirit, naphtha, diisopropyl ether, methyl ethyl ketone, and methyl isobutyl ketone.

  The bonding element 102 of the hologram optical base material L100 and the bonding surface 105 of the optical base material L2 that are fitted together are bonded through an adhesive by such an adhesion process, so that the hologram element built-in lens as shown in FIG. 200 is formed.

As described above, since the adhesive AD is protruded from the upper surfaces of the coating layers 104a and 107a and cured, the excess adhesive AD1 can be easily removed, so that the hologram optical base material L100 and the optical base material L2 are joined. Hologram element that can prevent excess adhesive AD1 from being directly adhered to and cured on peripheral portions 103 and 106 on the outer surface in the vicinity of surfaces 102 and 105, and can be easily and quickly removed without scratching or the like. A method for manufacturing a built-in lens can be provided.
Further, by bonding the release piece P to the excess adhesive AD1, the release piece P and the excess adhesive AD1 are firmly bonded together with the curing of the adhesive AD. Therefore, the excess adhesive is removed by peeling off the release piece P. Since AD1 is peeled off from the upper surfaces of the coating layer 104a of the bonding surface 102 of the hologram optical substrate L100 and the coating layer 107a of the bonding surface 105 of the optical substrate L2, the surfaces of the hologram optical substrate L100 and the optical substrate L2 are removed. The excess adhesive AD1 can be removed without being damaged.

  (B) The adhesion process in the case where the coating layer is formed by sticking a film-like sheet material will be described with reference to FIGS.

  6 is an external view of the hologram optical base material L100 and the optical base material L2 before the lens joining step, FIG. 7 is an external view of the hologram optical base material L100 and the optical base material L2 after the lens joining step, and FIG. The BB sectional view of Drawing 7 in each process of an adhesion process is shown.

  In addition, description of the process similar to the process included in the adhesion | attachment process in the case where a film layer is formed by carrying out a silicone film process is abbreviate | omitted.

First, a peeling piece installation process is performed.
As shown in FIGS. 6, 7, and 8 (a), the peeling piece installation step is performed when the coating layer is formed before the coating layer forming step, and the coating layer, the hologram optical base material L <b> 100, and the optical base described later. Separation pieces are placed under the peripheral portions 103 and 106 on the outer surface in the vicinity of the joining surfaces 102 and 105 of the material L2 and the lower part of the formed coating layer.

  The properties and the material configuration of the release piece, the position to be provided are the same characteristics as the release piece used in the release piece adhesion step included in the adhesion step (a) when the coating layer is formed by being processed with a silicone film, The description is omitted because of the material configuration and position.

  In the peeling piece installation step, the peeling piece is not limited to be provided between a film-like sheet material, which will be described later, and at least one of the hologram optical base material L100 or the optical base material L2. It may be provided by bonding, or may be provided in advance as part of a film-like sheet material.

Next, a coating layer forming step is performed.
As shown in FIGS. 6 and 8 (b), the coating process is performed by using peripheral portions 103 and 106 (partially peeled pieces) on the outer surface in the vicinity of the joint surfaces 102 and 105 of the hologram optical base material L100 and the optical base material L2. The film layers 104b and 107b are formed by applying a film-like sheet material to the upper part of the film.

  As a characteristic of the coating layer to be formed, it has peelability while having adhesive strength with the peripheral portions 103 and 106 of the hologram optical base material L100 and the optical base material L2, and has high adhesive strength with an adhesive. It is preferable to have.

  Examples of the material for the film-like sheet material include ethylene acetate copolymer (EVA), polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), and polystyrene (PS).

  As described above, since the coating layers 104b and 107b are formed by applying the film-like sheet material, the peripheral portion on the outer surface in the vicinity of the joining surfaces 102 and 105 of the hologram optical base material L100 and the optical base material L2. It is possible to prevent the adhesive AD from being directly adhered to the 103 and 106 and cured.

Next, an adhesive application process is performed.
The adhesive application process is shown in FIG. The adhesive application step is the same as the adhesive application step included in the adhesion step (a) in the case where the coating layer is formed by being processed with a silicone coating, and thus description thereof is omitted.

After the adhesive application step, a lens bonding step is performed.
The lens bonding process is shown in FIGS. 6, 7, and 8D. The lens bonding step is the same as the lens bonding step included in the bonding step (a) in the case where the coating layer is formed by being processed with a silicone coating, and thus description thereof is omitted.

  After the lens bonding step, an adhesive curing step is performed. Since the adhesive curing step is the same as the adhesive curing step included in the adhesion step (a) when the coating layer is formed by being processed with a silicone coating, the description thereof is omitted.

After the adhesive curing step, an adhesive removing step is performed.
As shown in FIG. 8 (f), the adhesive removing step is a step of removing the surplus adhesive AD1 that has protruded and hardened on the upper surfaces of the coating layers 104b and 107b together with the coating layers 104b and 107b and the peeled pieces.

  When the peeling piece P is peeled off from the outer surfaces of the hologram optical base material L100 and the optical base material L2, the coating layers 104b and 107b together with the peeling piece P move to the peripheral portions 103 and 106 (hologram optical base material L100 and The excess adhesive AD1 peeled off from the surface of the optical substrate L2 and cured on the coating layers 104b and 107b is removed.

  The bonding element 102 of the hologram optical base material L100 and the bonding surface 105 of the optical base material L2 that are fitted together are bonded through an adhesive by such an adhesion process, so that the hologram element built-in lens as shown in FIG. 200 is formed.

Thus, the excess adhesive AD1 is easily removed by protruding the adhesive AD on the upper surfaces of the coating layers 104b and 107b of the joining surfaces 102 and 105 of the hologram optical base L100 and the optical base L2, thereby curing the adhesive AD. Therefore, it is possible to prevent the excess adhesive AD1 from being directly attached to the peripheral portions 103 and 106 of the joining surfaces 102 and 105 of the hologram optical base material L100 and the optical base material L2, and to be scratched. Therefore, it is possible to provide a method for manufacturing a hologram element built-in lens that can be easily and quickly removed.
Further, since the peeling piece P is provided so that the coating layers 104b and 107b and the peeling piece P are bonded, the peeling pieces P are peeled off so that the coating layers 104b and 107b together with the peeling piece P become the hologram optical base material L100 and the optical piece. Since it peels from the upper surfaces of the peripheral portions 103 and 106 of the bonding surfaces 102 and 105 of the base material L2, excessive adhesion of the upper surfaces of the coating layers 104b and 107b without damaging the surfaces of the hologram optical base material L100 and the optical base material L2. Since the agent AD1 and the coating layers 104b and 107b can be removed together, the working efficiency can be improved.

  In addition, when a coating layer is formed by sticking a film-like sheet material, it may be the above-described peeling piece adhesion step instead of the peeling piece installation step.

  Further, the present invention is not limited to the contents of the above embodiment, and can be appropriately changed without departing from the gist of the present invention.

It is an external view of the shape of the optical base material L1 and the optical base material L2 in embodiment to which this invention is applied. It is an external view of the shape of the joint surfaces 102 and 105 of the optical base material L1 and the optical base material L2. FIG. 3 is an external view of the hologram optical base material L100 and the optical base material L2 before the lens joining step in the adhesion step when the coating layer is formed by being processed with a silicone coating. FIG. 5 is an external view of the hologram optical base material L100 and the optical base material L2 after the lens joining step in the adhesion step when the coating layer is formed by being processed with a silicone coating. FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 in each step of the bonding step in the bonding step when the coating layer is formed by being processed with a silicone coating. FIG. 5 is an external view of the hologram optical base material L100 and the optical base material L2 before the lens joining step in the adhesion step when the coating layer is formed by sticking a film-like sheet material to the base material. FIG. 4 is an external view of the hologram optical base material L100 and the optical base material L2 after the lens joining step in the adhesion step when the coating layer is formed by sticking a film-like sheet material to the base material. FIG. 8 is a cross-sectional view taken along line BB of FIG. 7 in each step of the bonding step in the bonding step when the coating layer is formed by sticking a film-like sheet material to the substrate. It is the hologram element built-in lens 200 in the present embodiment.

Explanation of symbols

19 Island-shaped part 100 Hologram element 101 Inclined surfaces 102a, 102b, 102c Joining surface 103 Peripheral parts 104a, 104b Coating layers 105a, 105b, 105c Joining surface 106 Peripheral parts 107a, 107b Coating layer AD Adhesive AD1 Surplus adhesion crime L1 Optical base Material (first optical substrate)
L2 optical substrate (second optical substrate)
P Peeling piece

Claims (10)

A hologram element is formed on the bonding surface of the first optical substrate, and the first optical substrate and the second optical substrate are bonded so that the hologram element is sandwiched between the bonding surface of the second optical substrate. In the manufacturing method of the hologram element built-in lens to produce the hologram element built-in lens,
Before the first optical substrate and the second optical substrate are bonded, the coating film forms a coating layer on the outer surfaces of the first optical substrate and the second optical substrate in the vicinity of the bonding surfaces of the two. A layer forming step;
When the first optical substrate and the second optical substrate are bonded to at least one of the bonding surfaces of the first optical substrate and the second optical substrate on which the coating layer is formed, from the bonding surface An adhesive application process for applying an amount of adhesive that protrudes;
After the adhesive is cured, an adhesive removal step of removing the adhesive protruding on the coating layer from the joining surface end surface of the first optical base and the second optical base;
A method for manufacturing a lens with a built-in hologram element, comprising: In the manufacturing method of the lens with a built-in hologram element according to claim 1,
In the coating layer forming step, the coating layer is formed by applying a property that is liquid or semi-liquid and can be removed by washing,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the hologram element built-in lens according to claim 2,
The property is a silicone agent;
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the hologram element built-in lens according to any one of claims 1 to 3,
After the adhesive application step, including an exfoliation piece adhesion step of adhering an exfoliation piece as a clue member at the time of removing the overhanging adhesive to the adhesive that protrudes from the joint surface onto the coating layer,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the hologram element built-in lens according to claim 4,
The adhesive removing step is to remove the protruding adhesive by peeling off the adhesive protruding on the coating layer using the release piece as a clue;
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the hologram element built-in lens according to any one of claims 2 to 5,
After the adhesive removing step, removing the property as the coating layer by washing,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the lens with a built-in hologram element according to claim 1,
In the coating layer forming step, the coating layer is formed by sticking a film-like sheet material on the outer surfaces of the first optical substrate and the second optical substrate,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the lens with a built-in hologram element according to claim 7,
After the adhesive application step, including an exfoliation piece adhesion step of adhering an exfoliation piece as a clue member at the time of removing the overhanging adhesive to the adhesive that protrudes from the joint surface onto the coating layer,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the lens with a built-in hologram element according to claim 7,
Before the coating layer forming step, it is peeled off as a clue member when removing the protruding adhesive on the outer surface in the vicinity of the bonding surface between the first optical substrate and the second optical substrate and below the coating layer. Including a stripping piece installation step of providing a piece,
A method for manufacturing a lens with a built-in hologram element. In the manufacturing method of the lens with a built-in hologram element according to claim 8 or 9,
The adhesive removing step is to remove the protruding adhesive together with the coating layer by peeling off the coating layer with the release piece as a clue;
A method for manufacturing a lens with a built-in hologram element.

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