JP2626305B2 - How to make a fly-eye lens plate stamper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to three-dimensional photographs, optical cards, X
The present invention relates to a method for manufacturing a fly-eye lens plate forming die (stamper) used for easily manufacturing a fly-eye lens plate used for a YZ plotter or the like.

[0002]

2. Description of the Related Art A fly-eye lens plate (a convex lens array formed by two-dimensionally arranging a plurality of minute convex lenses in a predetermined arrangement mode; hereinafter, sometimes simply referred to as a convex lens array) is provided. In addition to being applied in the technical field of stereo photography for a long time, for example, computer output devices, CAD output devices used in the field of mechanical design, creation of hard copies of medical three-dimensional images, An XYZ plotter proposed by the present applicant as a hard copy of a three-dimensional image, a hard copy of a three-dimensional image in the study of molecular structure, and other applications widely used in various applications (for example, Japanese Unexamined Patent Publication No. -419
No. 21 and many other publications) or used in an optical card proposed by the present applicant (for example, disclosed in Japanese Patent Application Laid-Open No. 2-66724). I have. For example, the optical card mentioned as one of the application examples of the fly-eye lens is a bank card that has recently been put to practical use, as described in detail in the above-mentioned Japanese Patent Application Laid-Open No. 2-66724. An optical recording material layer is provided on a rectangular card having the same shape and dimensions as a credit card, an identification card, a memory card, a card for various purposes, etc., and the card is used as a so-called optical card for various kinds of information. In order to be usable as a recording medium, for example, a long-time irradiation of light having a light intensity equal to or less than a predetermined threshold value is performed on a rectangular card having a shape and a size similar to a credit card widely used in society. And a recording layer having a two-dimensional spread is provided by a recording material on which recording is performed by irradiation with light having a light intensity equal to or higher than the predetermined threshold. , And the 11 and 12 show a side sectional view for explaining the operation and perspective view illustrating a configuration example of an optical card LAC disclosed by JP-2-66724 JP described above.

The optical card LAC illustrated in FIG. 11 comprises a convex lens array FEL in which a plurality of minute convex lenses are two-dimensionally arranged in a predetermined arrangement manner, and the above-mentioned convex lens array FEL. A recording layer RML in which a recording / reproducing area individually corresponding to each convex lens is formed, and the individual recording / reproducing areas in the recording layer RML are each two-dimensionally divided to record and reproduce individual information. Each of the predetermined number of recording / reproducing areas set as desired is a specific one when viewed through the convex lens from a different predetermined angle with respect to the optical axis of the convex lens. The recording layer is provided near the focal plane of each convex lens in the convex lens array FEL so that only the recording / reproducing area of the unit is seen enlarged by the convex lens. It is of the configuration form in which positions the ML. In the optical card LAC shown in FIGS. 11 and 12, the substrate BP has a laminated structure of the protective layer 1 and the base material 2, and the recording layer RML is irradiated with light having a light intensity less than a predetermined threshold for a long time. It is shown as being formed by a two-dimensional spread of a recording material such that recording is performed by irradiation of light having a light intensity equal to or higher than the predetermined threshold, without being recorded even by Recording layer R
As the ML, for example, a silver salt pattern layer (crust layer) 4
When a light having a light intensity equal to or higher than a threshold value for recording an information signal is made incident on the optical card 1 as a two-layer structure of a lower gelatin layer 3 and the lower layer, the heat of the light is provided on the optical card LAC. The pits are formed by dissolving silver particles of an organic colloidal (gelatin) silver salt pattern layer 4 containing silver particles provided on the focal plane of a convex lens of the convex lens array FEL into a lower gelatin layer 3 to form information. It is described that a recording layer RML having a configuration in which recording corresponding to a signal is performed on the recording layer is used.

[0004] Recording (writing) of required information on the recording layer RML in the optical card LAC configured as described above is shown in, for example, FIG. 8 of Japanese Patent Application Laid-Open No. 2-66724. It can be performed using an optical card recording / reproducing apparatus having such a configuration. FIG. 12 shows an optical card LAC provided with a convex lens array FEL having a configuration as shown in FIG.
When a parallel light beam having a cross-sectional shape and a cross-sectional dimension substantially equal to the shape and size of one convex lens of the convex lens array FEL provided in the convex lens array FEL is incident on one convex lens of the convex lens array FEL, By changing the incident direction so as to be a specific direction, the position of the light spot imaged in the recording / reproducing area corresponding to the convex lens on which the light is incident is specified in the recording / reproducing area. Position.
This is illustrated and described. That is, FIG.
In No. 2, the lens 50 of the recording / reproducing structure moves from the convex lens array F
A case in which a parallel light beam having a cross-sectional shape and a cross-sectional dimension substantially equal to the shape and the size of one convex lens in the EL is incident on one convex lens Lα in the convex lens array FEL provided in the optical card LAC. The direction of light incident on one convex lens Lα in the convex lens array FEL from the recording / reproducing structure is indicated by P1, P2,
When changed as shown by P3, the incident light in each direction such as P1, P2, and P3 described above becomes a light spot Sα1, a light spot at a different position in the recording / reproducing area corresponding to the convex lens Lα. This indicates that a point Sα2 and a light point Sα3 occur.

As described with reference to FIG. 12, the direction of light incident from the recording / reproducing structure to one successive convex lens in the convex lens array FEL provided on the optical card LAC is set to a specific direction, and the convex lens is set. Array F
Each recording / reproduction area corresponding to each convex lens in the EL is two-dimensionally divided, and a predetermined number of units of recording / reproduction are recorded in each recording / reproduction area corresponding to each of the recording / reproduction areas. The information recorded in each area is recorded in the recording / reproducing area of the unit in the same incident direction as that of the light incident on the convex lens when the information signal is recorded in the recording / reproducing area of the unit. When a signal is recorded, light having the same cross-sectional area as light incident on the convex lens is read out by reflected light obtained by being incident on the convex lens, and recording information to be read corresponds to recording information corresponding to one convex lens. A specific one of a plurality of recording / reproducing areas set in the reproducing area is read out as being enlarged to the size of a convex lens. Therefore, as described above, 1
The information signals recorded in the recording / reproducing areas of a plurality of units set in the recording / reproducing area corresponding to the one convex lens have the same direction and the same direction as the light used when recording the respective information signals. When the light having the cross-sectional shape described above is incident on the convex lens or the cylindrical convex lens, the light having the same size as the convex lens can be obtained by reflected light generated in the recording layer RML.

[0006] As described above, the optical card LAC shown in FIG. 11 is not recorded even by long-time irradiation of light having a light intensity less than the predetermined threshold, and is not recorded above the predetermined threshold. A recording layer RML formed by two-dimensional spreading of a recording material on which recording is performed by light irradiation with light intensity, and a plurality of minute convex lenses on one surface of the recording layer RML are arranged in a predetermined arrangement. The convex lens array FEL arranged and arranged in a three-dimensional manner, and the individual recording / reproducing areas formed on the recording layer RML corresponding to the individual convex lenses constituting the convex lens array FEL individually. The above-mentioned individual recording / reproducing areas are two-dimensionally divided to set recording / reproducing areas of a predetermined number of units, and recording / reproducing of the above-mentioned units in which individual information is to be recorded / reproduced. Each of the areas is recorded on the focal plane of each convex lens in the above-mentioned convex lens array so that when viewed through the convex lens, only one specific recording / reproducing area appears as having the same size as the convex lens. Each of the convex lenses constituting the convex lens array FEL is an optical card in which at least a part of a pair of a convex lens array FEL in which layers are positioned and a recording layer RML is provided. Are divided two-dimensionally so that the recording / reproducing areas respectively corresponding to the recording / reproducing areas are composed of a group of recording / reproducing areas of a plurality of units, and recording of different information signals in the recording / reproducing areas of the respective units. Since reproduction is performed, high-density recording / reproduction is performed. In addition, the reproduction is performed in such a manner that the information signal of the recording / reproduction area of the unit described above is reduced to the size (width) of the convex lens. Since the data is enlarged and read, high-density recording / reproducing can be easily performed without using means for automatic tracking control. Further, since recording / reproducing is performed by parallel light, a simple mechanism without automatic focus control is required. Since a recording / reproducing apparatus can record / reproduce information signals, and since a recording member having a combination of a convex lens array FEL and a recording layer RML is used, for example, FIG. 7 of JP-A-2-66724 is used. The use of an XYZ plotter as exemplified in (1) above makes it possible to easily record and reproduce stereoscopic image information on the recording layer RML of the optical card LAC.

[0007]

In addition to the above-mentioned optical card, a fly-eye lens plate having many uses as described above is conventionally made by arranging glass beads, and a mold { Mass production using a fly-eye lens plate mold (stamper)} has not been performed. However, when an optical card is to be put to practical use as described above, it is natural that a large number of fly-eye lens plates must be produced. Therefore, as a mold for a fly-eye lens plate used for mass production of a fly-eye lens plate, for example, it is conceivable to form a hemispherical recess with a spherical milling mill on a plate material. However, it is very difficult to make such a device by applying such a means, and it is extremely difficult to make the spherical surface an optical mirror surface, and a solution has been required.

[0008]

According to the present invention, a large number of spheres having the same size and made of a different material from the resin are two-dimensionally arranged on a substrate in a container into which the resin is injected. Solidifying the resin after injecting the resin into a molding die, and a surface including the center of the sphere in a state where the numerous spheres and the solidified resin are integrated. A step of cutting in the vicinity, and a step of removing a sphere fixed to the resin in a solidified state,
Obtaining a master disk of a fly-eye lens plate having a surface on which the shape of the surface from which the sphere has been removed in the base plate of the fly-eye lens plate produced through the above steps is transferred; Forming a fly-eye lens plate stamper by electroforming a fly-eye lens plate master plate and producing a fly-eye lens plate stamper. A mold in which a large number of spheres having the same size, which are formed using a material having rigidity even at a temperature equal to or higher than the softening temperature of a thermoplastic resin material used, are two-dimensionally arranged on a substrate. A thermoplastic resin material for a base of a fly-eye lens plate heated to a temperature equal to or higher than the softening temperature, and a thermoplastic resin material for a base of a fly-eye lens plate in which approximately half of the above-mentioned sphere is formed. A step of crimping so that it is buried inside,
The fly-eye lens plate obtained as a state in which the concave portions are formed by a large number of spheres has a surface in which the shape of the surface on which the concave portion is formed by the spheres is transferred on the base plate of the lens plate. A method of manufacturing a fly-eye lens plate stamper comprising the steps of obtaining a fly-eye lens plate master plate and electroforming the fly-eye lens plate master plate to obtain a fly-eye lens plate stamper. A large number of spheres having the same size formed of a material having rigidity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material used in the production of the fly-eye lens plate base plate are formed on the substrate. And two-dimensionally arranged, and the space between the spheres on the substrate side of the large number of spheres is filled with a material having plasticity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material. temperature The thermoplastic resin material for the base of the fly-eye lens plate heated to the above temperature is arranged such that approximately half of the sphere is buried in the thermoplastic resin material for the base of the fly-eye lens plate. And the shape of the surface of the mother plate of the fly-eye lens plate on which the concave portions are formed by the spheres is transferred, as obtained in the state where the concave portions are formed by the large number of spheres. A step of obtaining a master plate of a fly-eye lens plate having a surface in an inclined state, and a step of electroforming the master plate of the fly-eye lens plate to obtain a stamper of the fly-eye lens plate. A method of manufacturing a plate stamper, injecting a photo-curing resin into a molding die in which a number of spheres having the same size are two-dimensionally arranged on a substrate in a container into which the photo-curing resin is injected. And the side opposite to the substrate side with which the sphere is in contact Irradiating light for curing the photo-curable resin to solidify the photo-curable resin up to the vicinity of the surface including the center of the sphere; and a mother disk of a fly-eye lens plate formed through the above-described respective steps. Obtaining a master plate of a fly-eye lens plate having a surface on which the shape of the surface on which the concave portion is formed by the sphere is transferred, and electroforming the master plate of the fly-eye lens plate. Forming a stamper for the fly-eye lens plate by performing a process of obtaining a fly-eye lens plate stamper. A step of injecting the photocurable resin into a two-dimensionally arranged molding die, and irradiating light for curing the photocurable resin from the side opposite to the substrate side in contact with the sphere. Solidifying the photocurable resin up to near the surface including the center of the sphere Removing the protrusion around the portion where the sphere is formed in the solidified light-cured resin, and a mother disk of the fly-eye lens plate produced through the above-described respective steps. Obtaining a master plate of a fly-eye lens plate having a surface on which the shape of the surface on which the concave portion is formed by the sphere is transferred, and electroforming the master plate of the fly-eye lens plate. Forming a stamper of the fly-eye lens plate by performing the steps of: forming a stamper of the fly-eye lens plate; arranging a plurality of spheres having the same size two-dimensionally on the substrate; The space between the spheres on the substrate side in a large number of spheres is filled with a material having plasticity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material and the thermoplastic resin material is heated to a temperature equal to or higher than the softening temperature. Almost half Is pressed into a sphere so as to be buried in a thermoplastic resin material and fused to the sphere to obtain a molding die, and a fly-eye lens is formed by electroforming the surface of the sphere in the molding die. Forming a stamper of a fly-eye lens plate, comprising: forming a stamper of the plate; and forming a substrate portion of the container into which the photocurable resin is injected with a material transparent to light for curing the photocurable resin. A step of injecting a photo-curing resin into a container in which a large number of spheres having the same size are two-dimensionally arranged on the substrate portion of the container.
Light for curing the photo-curable resin is irradiated from the substrate side of the container to solidify the photo-curable resin up to near the surface including the center of the sphere, and is integrated with the substrate to form a fly-eye lens plate. A method of manufacturing a fly-eye lens plate stamper comprising a step of forming a stamper, and a plurality of spheres having the same size are two-dimensionally arranged on a substrate in a container into which a photocurable resin is injected. A step of injecting the photocurable resin into a molding die, and a surface including the center of the sphere by irradiating light for curing the photocurable resin from the side opposite to the substrate side with which the sphere is in contact To form a mold by solidifying the photocurable resin up to the step described above, and forming a stamper of the fly-eye lens plate by electroforming on the surface side of the sphere in the mold. To provide stamper fabrication methods

[0009]

The transfer pattern of a large number of spheres of the same size arranged two-dimensionally on the substrate in a predetermined arrangement manner is transferred a predetermined number of times, and a fly-eye lens plate forming die (stamper) is formed. Therefore, it is possible to easily provide a fly-eye lens plate forming die (stamper) for mass production.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a method of manufacturing a fly-eye lens plate stamper according to the present invention. 1 to 9 are views for explaining the outline of the steps of the embodiment of the method of manufacturing a fly-eye lens plate stamper according to the present invention, and FIG. 10 is a view showing the fly-eye lens plate performed using the stamper. It is a figure for explaining the example of manufacture of. First, an embodiment of a method for manufacturing a fly-eye lens plate stamper of the present invention will be described with reference to the schematic process diagram shown in FIG. 1 and the method will be described using the manufactured fly-eye lens plate stamper. A description will be given of an example of manufacturing a fly-eye lens. In FIG. 1A, reference numeral 5 denotes a container into which a resin is injected. On the substrate 5a of the container 5, a large number of spheres S having the same size are two-dimensionally arranged in a predetermined arrangement. Are arranged. In FIG. 1A, a large number of spheres S, S... Having the same size are formed on a flat substrate 5a.
Are arranged two-dimensionally in a state where they are in contact with each other, but the above-mentioned large number of spheres S are arranged two-dimensionally on the substrate 5a. In
For example, for each position on the substrate 5a on which the individual spheres S, S...
Alternatively, a plurality of spheres S, S
May be easily arranged in the recesses and small holes described above.

Then, as described above, a large number of spheres S, S.
Are arranged in the recesses and small holes described above, the individual objects in the large number of spheres S, S... Are spaced apart from each other by a predetermined distance on a flat substrate 5a. Can be easily arranged two-dimensionally so as to form a predetermined arrangement pattern, and even if there is some error in the size of each of a large number of spheres S, S. Advantages such as no disturbance are obtained. In addition, a concave portion or a small hole is provided in advance at each predetermined position on the substrate so that the individual spheres S, S... Means for easily arranging the individual spheres S, S... In the aforementioned recesses or small holes provided in the substrate are illustrated in FIGS. 2 to 9 respectively. It goes without saying that the present invention can be applied favorably to the case of the present embodiment.

FIG. 1 schematically shows a manufacturing process of a fly-eye lens plate stamper, which is schematically illustrated in a two-dimensional manner in a predetermined arrangement manner on a substrate 5a of a container 5 into which a resin is injected. .. And the container 5
The resin 8 to be injected therein must be made of a different material so that the two can be easily separated and removed in a later etching step. In the following description, the spheres S, S... Shown in FIG. 1A are metal spheres. In manufacturing the fly-eye lens plate stamper by the method of manufacturing the fly-eye lens plate stamper shown in FIG. 1, first, as shown in FIG. The resin 8 is poured from another container 7 into the container 5 in which a large number of spheres S, S... Are arranged in a predetermined arrangement manner. The resin 8 injected into the container 5 solidifies while the many spheres S, S... Arranged on the substrate 5 a are buried in the resin 8. Since the release material layer 6 is formed on the substrate 5a and the inner wall of the container 5 in the container 5, the resin block 8a that is solidified in the state shown in FIG. 5 can be easily taken out. In FIG. 1B, a portion shown by both a portion shown by a solid line and a portion shown by a dotted line continuous therewith buries a number of spheres S, S... Arranged on the substrate 5a. It is a resin block 8a in a state where it is solidified in a state where it is in a state.

Block 8a of resin taken out of container 5
Is cut at the surface 9 near the plane including the center of each of the many spheres S buried in the resin block 8a. The cutting operation described above may be performed using a suitable means such as cutting, grinding, or the like. By performing the cutting in the above cutting step, the resin block 8a is brought into the state shown by the solid line in FIG. Next, the metal sphere portion remaining in the resin block 8a in the state shown by the solid line in FIG. 1B by the above cutting step is removed by an etching step. That is, the resin blocks 8a in the state shown by the solid line in FIG.
By immersing the metal in the resin block 8a in a corrosive solution having a property of dissolving but not adversely affecting the resin 8, for example, a solution of an appropriate acid, The rest of the sphere is dissolved and removed,
As shown in FIG. 1C, the sphere S,
A block 8a of resin in a state where dents α, α...
The motherboard MO of the fly-eye lens plate can be obtained.

Next, as shown in FIG. 1 (c), a fly-eye lens composed of a resin block 8a in which recesses α, α... Corresponding to a part of a sphere are formed. The conductive layer 10 is formed, for example, by electroless plating on the surface of the base plate MO on which the recesses α, α... Are formed, and then the required thickness is formed on the conductive layer 10. The metal layer 11 of, for example, the copper (or nickel) layer 11 is formed by applying an electroforming method (see FIG. 1D). By applying the electroforming method, the base M of the fly-eye lens plate
On the metal layer 11 formed on the O, that is, the portion indicated by the symbol MA in FIG. 1D, the recesses α, α... Since a portion having a convex shape is provided, the portion indicated by reference numeral MA in FIG. 1D is peeled off from the portion of the base plate MO of the fly-eye lens plate. The board MA is made. The convex portion of the master disc MA of the fly-eye lens plate made of the metal layer 11 obtained by peeling from the base plate MO of the fly-eye lens plate indicated by the symbol MO in FIG. After a conductive layer 12 for separation is formed on the surface provided, a metal layer 13 having a required thickness such as copper (or nickel) is formed on the conductive layer 12 for separation by applying an electroforming method. Referring to FIG. 1E, the metal layer 13 has a concave portion where the convex portion of the master plate MA of the fly-eye lens plate is transferred, that is, the fly layer. Are provided with the same depressions as the depressions α, α... In the base plate MO of the eye lens plate. Next, the metal layer 13
Is peeled off from the master disk MA of the fly-eye lens plate, and if necessary, a hard metal layer 15 such as chromium (or a release material layer 15) is formed on the surface of the fly-eye lens plate MA. The stamper ST of the fly-eye lens plate (the mold for the fly-eye lens plate) having the same recesses as the recesses α, α,...

In the above-mentioned embodiment, as shown in FIG. 1C, the concave portions α,
The master disk MA of the fly-eye lens plate is formed by electroforming from the base plate MO of the fly-eye lens plate composed of the resin block 8a on which α... are formed. Fly-eye lens plate stamper S by electroforming
T was made, but in the practice of the present invention,
After the release material layer is formed on the surface of the base plate MO of the fly-eye lens plate on which the depressions α, α... Are formed using the resin 8, the state of the surface is transferred using the resin. After the master plate MA of the resin fly-eye lens plate made of resin is made, and then electroless plating is performed on the surface of the master plate MA of the resin fly-eye lens plate made as described above, A metal layer 13 having a required thickness, for example, a copper (or nickel) layer 13 is formed by applying the method {see FIG. 1 (e)}, and then the metal layer 13 is covered with the above-mentioned resin fly eye. After the lens plate is peeled off from the master disk MA, a hard metal layer 15 such as chrome (or a release material layer 15) is formed on the surface of the stamper ST (flyer) as needed. Eye lens plate molding die).

FIG. 1 (f) shows a fly-shaped lens plate stamper ST (fly-eye lens plate molding die) formed as described above, and a heated thermoplastic resin material pressed against the fly-eye lens plate. FIG. 3 is a diagram showing an example of a case where an eye lens plate is made;
In FIG. 1F, ST is a stamper ST of the fly-eye lens plate formed by the above-described process. The stamper ST of the fly-eye lens plate has a hard metal layer such as chrome on the surface of the metal layer 13. 15 is formed. The stamper ST of the above-mentioned fly-eye lens plate is made of an adhesive 1
4 and is fixed to the pressing member 16 to form a lower die of the press integrally with the pressing member 16. Reference numeral 18 denotes a transparent thermoplastic resin material used as a material of a fly-eye lens plate, and reference numeral 17 denotes an upper die of a press. The transparent thermoplastic resin material 18 used as the material of the fly's eye lens plate is heated and sandwiched between the lower mold and the upper mold of the press machine, and the upper mold and the lower mold are sandwiched between the upper mold and the lower mold. Predetermined pressure 1
When 9 and 20 are added, the shape of the surface of the fly-eye lens plate on the stamper ST is transferred to the transparent thermoplastic resin material 18 used as the material of the fly-eye lens plate, and the transparent thermoplastic resin material 18 is Molded into a fly-eye lens plate.

FIG. 10 shows a case in which a fly-eye lens plate is made of a photocurable resin using the fly-eye lens plate stamper ST (fly-eye lens plate molding die) manufactured as described above. FIG. 11 is a diagram showing an example, and in FIG.
Is a stamper ST of the fly-eye lens plate manufactured by the above-described process. The stamper ST of the fly-eye lens plate is formed by adhering and forming a release material layer 15 on the surface of the metal layer 13. In FIG. 10, the fly-eye lens plate stamper ST is fixed to the bottom plate of the container 47 of the molding machine by the adhesive 14. Reference numeral 48 denotes a cover plate made of a material transparent to light for curing the photocurable resin, and reference numeral 6 denotes a release material layer adhered to the cover plate 48. From the open end side of the container 47 of the curing molding machine into the container 47 of the molding machine, the photocurable resin 3
0, the lid plate 48 is pressed against the open end of the container 47 of the molding machine with the surface on which the release material layer 6 is provided, and the photocurable resin in the container 47 of the molding machine is pressed. Excess photocurable resin 30 in 30 is removed. Next, light for curing the photocurable resin 30 is incident through the cover plate 48 to cure the photocurable resin 30 in the container 47 of the molding machine. A fly-eye lens plate having a shape transferred to the photocurable resin material 30 used as a material for the fly-eye lens plate is obtained.

Next, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 2 is as follows. A plurality of spheres S of the same size are two-dimensionally arranged in a predetermined arrangement on a substrate 21a. , S.. Are arranged on one side of a large number of spheres S, S... In the above-mentioned molding die, for the base of a fly-eye lens plate heated to a temperature equal to or higher than the softening temperature. After the thermoplastic resin material 22 is placed, pressures 24 and 25 are applied to the pressure plate 23 and the substrate 21a, and the thermoplastic resin for the base of the fly-eye lens plate heated to a temperature equal to or higher than the softening temperature described above. The resin material 22 is pressure-bonded so as to be buried in the thermoplastic resin material for the mother disk of the fly-eye lens plate up to a substantially half portion of the spherical body S, and the surface of the thermoplastic resin material 22 described above is pressed. The concave parts α, formed by the large number of spherical bodies S, S.
are formed to form a flywheel lens plate motherboard MO. A large number of spheres S, S... Used in the construction of the molding die have rigidity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material used at the time of manufacturing the fly lens plate. What is constituted by using a material is used.

FIG. 2 (a) is a view showing the entire components of an apparatus used for producing the above-mentioned fly-eye lens plate motherboard MO, and 21 is a press machine. In FIG. 2B, pressures 24 and 25 are applied between the pressing plate 23 and the substrate 21a, and a large number of spheres S are two-dimensionally arranged on the substrate 21a in a predetermined arrangement. The thermoplastic resin material 22 for the base of the fly-eye lens plate heated to a temperature equal to or higher than the softening temperature sandwiched between the molding die and the pressing plate 23 is formed of a large number of spheres of the molding die described above. FIG. 2C is a view showing a state in which the parts are pressed into the portions between S, S... Further, FIG. 2C shows a concave portion α corresponding to a large number of spheres S, S. , Α.. Are formed, and concave portions α, α... Corresponding to a large number of spheres S, S... Are formed on the surface of the thermoplastic resin material 22 described above. Thermoplastic resin material 22 in a state
a indicates that it is used as the motherboard MO of the fly-eye lens plate.

As shown in FIG. 2C, a mother plate of a fly-eye lens plate made of a thermoplastic resin material 22a having recesses α, α... MO
The master disc MA of the fly-eye lens plate is made by electroforming, and the stamper ST of the fly-eye lens plate is made by electroforming from the master disc MA of the fly-eye lens plate. After a release material layer is formed on the surface of the lens plate motherboard MO where the depressions α, α... Are formed, a resin fly-eye lens plate in which the state of the surface has been transferred using resin. Master plate MA, and then a master plate M of a resin fly-eye lens plate made as described above.
After electroless plating is performed on the surface of A, a metal layer having a required thickness is formed by applying an electroforming method, and then the metal layer is formed from the master board MA of the resin fly-eye lens plate described above. After peeling, if necessary, a hard metal layer such as chrome (or a release material layer) such as chromium is adhered and formed on the surface to obtain a fly-eye lens plate stamper ST (fly-eye lens plate molding die). To do so, see FIG. 1 (d),
It may be the same as that already described with reference to (e).

The molding die used for molding the thermoplastic resin material 22 for the base of the fly-eye lens plate in the method of manufacturing the fly-eye lens plate stamper described above with reference to FIG. Since there are gaps between the many spheres S, S... Two-dimensionally arranged on the substrate 21a in a predetermined arrangement mode and the substrate 21a, the many spheres S, S in the molding die described above. , A thermoplastic resin material 22 for the base of a fly-eye lens plate heated to a temperature equal to or higher than the softening temperature is placed, and then pressures 24 and 25 are applied to the pressing plate 23 and the substrate 21a. The thermoplastic resin material 22 for the base of the fly-eye lens plate heated to a temperature equal to or higher than the softening temperature is substantially half of the spherical body S for the base of the fly-eye lens plate. When pressed so as to be embedded in the thermoplastic resin material, The pressing force is set such that the thermoplastic resin material 22 does not enter the gap between the substrate 21a and the many spheres S arranged two-dimensionally in a predetermined arrangement on the substrate 21a. For example, a method of setting the number is required. The method of manufacturing a fly-eye lens plate stamper whose manufacturing process is schematically illustrated in FIG. 3 is a method for manufacturing a plurality of identical stampers on a substrate 26a in a two-dimensional predetermined arrangement so as not to cause the above-described problems. .. Having a rigidity even at a temperature higher than the softening temperature of the thermoplastic resin material 22 used at the time of manufacturing the base plate of the fly-eye lens plate. Are arranged two-dimensionally in a predetermined arrangement on the substrate 26a, and the substrates 26a in the large number of spheres S, S. Sphere S on the side,
A molding die is used in which the gap between S... Is filled with a plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 described above.

In FIG. 3A, reference numeral 26a denotes a substrate, and 27 denotes a material having plasticity even at a temperature higher than the softening temperature of the thermoplastic resin material 22, which is higher than the softening temperature of the thermoplastic resin material 22. A large number of spheres S of the same size, which are formed using a material having rigidity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22, on the layer of the material 27 having plasticity even at the temperature S are two-dimensionally arranged in a predetermined arrangement manner. Reference numeral 28 denotes a pressing plate of the press machine 26, and the pressing plate 28 and the substrate 26a
At the same time, as shown in FIG.
Is added, the material 27 having plasticity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 is pressed into the gap between the many spheres S, S... And the substrate 26a. By appropriately setting the amount of the plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22, the large number of spheres S, S.
6a can be filled well with the plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 described above.

In FIG. 3, a thermoplastic resin material 22 for the base of a fly-eye lens plate heated to a temperature equal to or higher than the softening temperature is placed on one side of a large number of spheres S, S. After that, pressures 24 and 25 are applied to the pressure plate 28 and the substrate 26a.
In addition, the thermoplastic resin material 22 for the base of the fly-eye lens plate heated to a temperature equal to or higher than the above-described softening temperature is substantially half of the spherical body S of the fly-eye lens plate. When pressed so as to be buried in the thermoplastic resin material for the mother board, the concave portions α, α... Formed by the large number of spheres S, S. The motherboard MO of the eye lens plate is obtained (see FIGS. 3C and 3D). As shown in FIG. 3D, the electric power is supplied from the base plate MO of the fly-eye lens plate made of the thermoplastic resin material 22a in which the depressions α, α... The master disc MA of the fly-eye lens plate is made by casting, the stamper ST of the fly-eye lens plate is made from the master disc MA of the fly-eye lens plate by electroforming, or the fly-eye lens plate is made. After forming a release material layer on the surface of the mother disk MO on which the depressions α, α... Are formed, a resin fly-eye lens plate in a state in which the state of the surface has been transferred using resin. After making the master board MA and then electroless plating the surface of the master board MA of the resin fly-eye lens plate made as described above, the metal of the required thickness is applied by electroforming. Layer and then the metal layer is coated with the resin fly-eye lens described above. After being separated from the master disk MA, a hard metal layer (for example, chrome) (or a release material layer) such as chromium is formed on the surface as necessary, and a stamper ST (fly eye lens plate) for the fly eye lens plate is formed. The method of obtaining the molding die may be the same as that described with reference to FIGS. 1 (d) and 1 (e).

Next, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 4 is based on a case where the base MO of the fly-eye lens plate is formed using a photocurable resin. Is a molding container into which the photocurable resin 30 is injected. For example, a photocurable resin is placed on the substrate 29a of the molding container 29 into which the photocurable resin is injected. A large number of spheres S having the same size and made of a material opaque to light used for curing are two-dimensionally arranged in a predetermined arrangement. Reference numeral 6 denotes a release material. In the example shown in FIG. 4, a coating 31 of the release material is formed on the surface of the plurality of spheres S, S.
Is used. If the constituent materials of the numerous spheres S, S... Do not adhere to the photocurable resin 30 to be used, it is a matter of course that the coating 31 of the release material is not required.
As illustrated in FIG. 4A, a container 29 for molding is used.
After the photocurable resin 30 is injected from another container 7 into the inside, the photocurable resin 30 in the molding container 29 is irradiated with light Ps for curing the photocurable resin 30 as shown in FIG. Are hardened to the vicinity of the surface including the center of the large number of spheres S, S... To obtain a block 30a of the photocurable resin. In the block 30a of the photocurable resin illustrated in FIG. 4C, since the irradiation amount of the photocurable resin 30 was large, unnecessary portions of the gaps between the spheres S, S were also solidified in a projection shape. This is the case when the state is made. FIG. 4D shows the case where the unnecessary protrusion-shaped portion is formed on the block 30a of the photocurable resin as described above.
It is a figure for showing that the base MO of a desired fly-eye lens plate can be obtained by cutting at the position of the CC line in the figure.

FIG. 4 schematically shows a manufacturing process of a fly-eye lens plate stamper for a fly-eye lens plate made of a photocurable resin by a method of manufacturing a fly-eye lens plate stamper. (C) and (d), the base plate MO of the fly-eye lens plate made of the photocurable resin 30a in which the depressions α, α... The master disc MA of the fly-eye lens plate is made by electroforming, and the stamper ST of the fly-eye lens plate is made by electroforming from the master disc MA of the fly-eye lens plate. After forming a release material layer on the surface of the lens plate motherboard MO where the depressions α, α... Are formed, a resin fly-eye lens in a state where the state of the surface is transferred using a resin. The master board MA of the plate is made, and then the resin fly made as described above is made. After the electroless plating is performed on the surface of the master disc MA of the eye lens plate, the metal layer having the required thickness is not formed by applying an electroforming method, and the metal layer is applied to the resin fly eye lens plate. After being separated from the master disk MA, a hard metal layer (for example, chrome) (or a release material layer) such as chromium is formed on the surface as necessary, and a stamper ST (fly eye lens plate) for the fly eye lens plate is formed. The method of obtaining the molding die may be the same as that described with reference to FIGS. 1 (d) and 1 (e).

In any of the methods of manufacturing a fly-eye lens plate stamper described above with reference to FIGS. 1 to 4, two-dimensionally arranged on a substrate in a predetermined arrangement manner. A base plate MO of a resin-made fly-eye lens plate having an array of depressions in which a part of the spherical surfaces of a large number of spheres S, S. From the base plate MO of the eye lens plate, a master disk MA of the fly eye lens plate is formed by electroforming, and a stamper ST of the fly eye lens plate is formed from the master disk MA of the fly eye lens plate by electroforming. , Or after forming a release material layer on the surface of the base plate MO of the fly-eye lens plate on which the depressions α, α... Are formed, the state of the surface is transferred using a resin. The master board MA of the fly-eye lens plate made of resin was made, and then After applying electroless plating to the surface of the master disk MA of the formed fly-eye lens plate made of resin, a metal layer having a required thickness was formed by applying an electroforming method, and then the metal layer was formed as described above. After the resin fly eye lens plate is peeled off from the master disk MA, a hard metal layer such as chromium (or a release material layer) is formed on the surface of the fly eye lens plate as necessary, thereby forming the fly eye lens plate. Although the stamper ST (fly eye lens plate forming die) was obtained, the method of manufacturing the fly eye lens plate stamper, each of which is schematically illustrated in FIGS. A large number of spheres S of the same size arranged two-dimensionally in the arrangement mode
… Master board MA of master board MA with fly-eye lens plate
The stamper ST of the fly-eye lens plate (a fly-eye lens plate forming die) can be obtained by a single transfer operation by using the stamper ST of the fly-eye lens plate (the fly-eye lens). Plate forming mold).

First, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 5 will be described. In FIG. 5A, 32a is a substrate, 33 is a thermosetting adhesive layer, and a plurality of spheres S, S... Having the same size are two-dimensionally formed on the thermosetting adhesive layer 33. Are arranged in a predetermined arrangement mode. Reference numeral 34 denotes a pressing plate of a press machine 32. When the pressure plate 34 and the substrate 32a are heated while applying pressures 24 and 25 as shown in FIG. The thermosetting adhesive 33a of the material layer 33 is composed of a number of spheres S, S.
., and is hardened by heat to fill the gap between the plurality of spheres S, S... and the substrate 32a with the thermosetting adhesive 33a. , And a large number of spheres S, S... And the substrate 32a are firmly fixed and integrated to form a master disc MA of a fly-eye lens plate. FIG. 5C is a diagram showing a state in which the stamper ST of the fly-eye lens plate made of the metal layer 36 is formed by electroforming from the master plate MA of the fly-eye lens plate produced as described above. Reference numeral 35 denotes a conductive film provided when the plurality of spheres S, S,... Are insulators such as glass spheres. The conductive film 35 is formed by, for example, electroless plating. In the case where the plurality of spheres S, S... Are metal spheres and are arranged so as to be separated from each other, the conductive film 35 is formed and then the metal is formed by electroforming. A fly-eye lens plate stamper ST by the layer 36 is formed.

Next, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 6 will be described. In FIG. 6A, reference numeral 40 denotes a press machine, 40a denotes a substrate, 22 denotes a thermoplastic resin material, and 42 denotes a heat-sealing resin layer. The heat-sealing resin layer 42 is not required if the thermoplastic resin material 22 has a property of heat-sealing. Reference numeral 41 denotes a pressing plate of the press machine 40. On the substrate 40a, a large number of spheres S having the same size and made of a material having rigidity even at a temperature higher than the softening temperature of the thermoplastic resin material 22 are two-dimensionally predetermined. Are arranged in the arrangement mode. The thermoplastic resin material 22 which is heated to a temperature equal to or higher than the softening temperature and has the heat-fused resin layer 42 is placed on the above-mentioned large number of spheres S, S. Pressure 24, 25
In addition, the thermoplastic resin material 22 for the base of the fly-eye lens plate heated to a temperature equal to or higher than the above-described softening temperature is substantially half of the spherical body S in the thermoplastic resin material 22. Are fixed to the thermoplastic resin material 22 by the heat-sealing resin layer 42 by pressing the plurality of spheres S, S... As indicated by MA in FIG. Are integrated to form the master disc MA of the fly-eye lens plate. FIG. 6C shows a stamper S of the fly-eye lens plate formed of the metal layer 44 by electroforming from the master plate MA of the fly-eye lens plate produced as described above.
It is a figure showing the state where T is made. Reference numeral 43 denotes a conductive film provided when the large number of spheres S are insulators such as glass spheres. The conductive film 43 is formed by, for example, electroless plating. The numerous spheres S described above,
In the case where S ... is a metal sphere and is arranged so as to be spaced apart from each other, the conductive film 43 is formed and then the fly-eye lens is formed by the metal layer 44 by electroforming. A plate stamper ST is to be made.

The fly eye lens plate master board MA used in the method of manufacturing the fly eye lens plate stamper described above with reference to FIG. 6 is two-dimensionally arranged in a predetermined arrangement on the substrate 40a. Since there is a gap between the arrayed spheres S, S... And the substrate 40a, the spheres S, S
After the thermoplastic resin material 22 with the heat-fusible resin layer 42 heated to a temperature equal to or higher than the softening temperature is placed on one side of
1 and the substrate 40a are applied with pressures 24 and 25, and the heat-fused resin layer 42 heated to a temperature equal to or higher than the softening temperature described above.
When the thermoplastic resin material 22 is press-bonded so as to be buried in the thermoplastic resin material with the heat-fusible resin layer 42 up to substantially half of the sphere S, the heat-fusible resin .. In such a state that the thermoplastic resin material 22 with the layer 42 does not enter the gaps between the plurality of spheres S, S... Arranged two-dimensionally in a predetermined arrangement manner on the substrate 40a and the substrate 40a. Means such as setting a pressing force are required. Therefore, in the method of manufacturing a fly-eye lens plate stamper whose manufacturing process is schematically shown in FIG. 7, it is used when manufacturing the fly-eye lens plate mother board so as not to cause the above-mentioned problems. A large number of spheres S, S... Having the same size and made of a material having rigidity even at a temperature equal to or higher than the softening temperature of the
6a are arranged two-dimensionally in a predetermined arrangement mode, and the gap between the plurality of spheres S on the substrate 26a side in the large number of spheres S, S ... is equal to or higher than the softening temperature of the thermoplastic resin material 22 described above. At this temperature, the material is filled with the plastic material 27, and the master disc MA of the fly-eye lens plate is formed in the same manner as described with reference to FIG.

In FIG. 7A, reference numeral 26a denotes a substrate, and 27 denotes a material having plasticity even at a temperature higher than the softening temperature of the thermoplastic resin material 22, which is higher than the softening temperature of the thermoplastic resin material 22. A large number of spheres S of the same size, which are formed using a material having rigidity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22, on the layer of the material 27 having plasticity even at the temperature S are two-dimensionally arranged in a predetermined arrangement manner. Reference numeral 28 denotes a pressing plate of the press machine 26, and the pressing plate 28 and the substrate 26a
At the same time, as shown in FIG.
Is added, the material 27 having plasticity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 is pressed into the gap between the many spheres S, S... And the substrate 26a. By appropriately setting the amount of the plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22, the large number of spheres S, S.
The gap between the substrate 26a and the substrate 26a can be satisfactorily filled with the plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 described above.

As described above, a large number of spheres S, S.
6a is filled with a plastic material 27 even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material 22 described above.
The thermoplastic resin material 22 with the heat-fused resin layer 42 heated to a temperature equal to or higher than the softening temperature
Are placed on the pressure plate 28 and the substrate 26a,
FIG. 7C illustrates a state immediately before the application of the pressure 25, but the pressure 24 and the pressure are applied to the pressure plate 28 and the substrate 26a.
When 25 is added, the thermoplastic resin material 22 with the heat-fusible resin layer 42 heated to a temperature equal to or higher than the above-mentioned softening temperature becomes the mother disk of the fly-eye lens plate up to approximately half the spherical body S. When pressed so as to be buried in a thermoplastic resin material for use, the thermoplastic resin material 22 with the heat-fusible resin layer 42 becomes a thermoplastic resin material 22 up to approximately a half portion of the sphere S. When the plurality of spheres S are fixed to the thermoplastic resin material 22 by the heat-sealing resin layer 42 as shown in FIG.
The part indicated by MA in (d) is integrated to form the master disc MA of the fly-eye lens plate. And the master disc MA of the fly-eye lens plate made as described above is
In the same manner as described with reference to FIG. 6C, a fly-eye lens plate stamper ST made of a metal layer can be formed by electroforming.

Next, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 8 will be described. In FIG. 8A, 45a is a substrate made of a material transparent to light used when curing the photocurable resin, 45 is a container, and 6 is a film of a release material. , S are spheres. First, as shown in FIG. 8A, the resin 30 is transferred from another container 7 into a container 5 in which a large number of spheres S are arranged two-dimensionally in a predetermined arrangement manner on a substrate 45a. inject. Next, light Ps for curing the photocurable resin 30 is incident from the substrate 45a side.
The intensity of s is set so as to solidify the photocurable resin 30 existing from the surface of the substrate 45a to the vicinity of the surface including the center of the spheres S. Light Ps described above
Is present between the substrate 45a and the vicinity of the plane including the center of the spheres S, S.
After the photocurable resin 30 that has not been solidified is removed after the solidification of the substrate 45, as shown in FIG.
a and a number of spherical bodies S, S... are integrated to obtain a fly-eye lens plate master board MA. Then, the master disc MA of the fly-eye lens plate manufactured as described above can form the stamper ST of the fly-eye lens plate by a metal layer by the electroforming method in the same manner as described above. it can.

Next, a method of manufacturing a fly-eye lens plate stamper whose outline is shown in FIG. 9 will be described.
In FIG. 9A, reference numeral 46a denotes a substrate.
Is a container, 6 is a film of a release material, and S is a sphere having the same size. First, as shown in FIG.
6a, a large number of spheres S, S are two-dimensionally arranged in a predetermined arrangement.
Are arranged in a container 5 in which another resin 7
Inject 0. Next, as shown in FIG.
Light Ps for curing the photocurable resin 30 from the side opposite to 6a
The intensity of the light Ps is set so as to solidify the photocurable resin 30 existing from the incident side of the light Ps to the vicinity of the plane including the center of the spheres S. After the photo-curing resin 30 existing between the incident side of the light Ps and the vicinity of the surface including the center of the spheres S, S, S... When the resin 30 is removed, as shown in FIG. 9C, a master plate of a fly-eye lens plate in a state where the cured photo-cured resin 30a and many spheres S, S. MA is obtained. The fly-eye lens plate master disk MA made as described above can form the fly-eye lens plate stamper ST by a metal layer by an electroforming method in the same manner as described above.

[0034]

As is apparent from the above description, the method of manufacturing a fly-eye lens plate stamper according to the present invention makes it difficult to obtain a perfect circle and a mirror surface, but it is difficult to perform a cutting operation. Rather than making a mold by mechanical work such as, using an easily available sphere, the arrangement pattern of a large number of the same size sphere group two-dimensionally arranged on the substrate in a predetermined arrangement mode Since the transfer is performed a predetermined number of times to obtain a fly-eye lens plate molding die (stamper), a fly-eye lens plate molding die (stamper) for mass production can be easily provided.

[Brief description of the drawings]

FIG. 1 is a view for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 2 is a view for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 3 is a diagram for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 4 is a view for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 5 is a view for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 6 is a diagram for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 7 is a view for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 8 is a diagram for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 9 is a diagram for explaining an outline of steps of an embodiment of a method of manufacturing a fly-eye lens plate stamper of the present invention.

FIG. 10 is a diagram for explaining an outline of a process of manufacturing a fly-eye lens plate using a fly-eye lens plate stamper.

FIG. 11 is a perspective view of a part of a fly-eye lens plate.

FIG. 12 is a diagram for explaining the operation of a fly-eye lens plate.

[Explanation of symbols]

LAC: optical card, FEL: fly-eye lens (convex lens array), RML: recording layer, BP: substrate, 1: protective layer, 2
... Base material, 5 ... Container, 5a, 21a, 26a, 29a, 3
2a, 40a, 45a: substrate, 8: resin, 22: thermoplastic resin material, 30: photocurable resin, S: sphere, ST: stamper of fly eye lens plate, MO: mother board of fly eye lens plate, M
A: Fly eye lens master plate,

Claims (8)

(57) [Claims] 1. A molding die in which a number of spheres made of a material different from the resin and having the same size are two-dimensionally arranged on a substrate in a container into which the resin is injected. Solidifying the resin after injecting the resin into, and cutting near the plane including the center of the sphere in a state where the large number of spheres and the solidified resin are integrated with each other; Removing the spheres fixed to the resin in a solidified state, and transferring the shape of the surface of the fly-eye lens plate base plate from which the spheres are removed, which has been formed through the above-described steps, to the base plate. A step of obtaining a master plate of a fly-eye lens plate having a surface in an inclined state, and a step of electroforming the master plate of the fly-eye lens plate to obtain a stamper of the fly-eye lens plate. How to make a plate stamper. 2. A method of manufacturing a fly-eye lens plate mother plate, comprising a plurality of materials having the same size which are made of a material having rigidity even at a temperature higher than a softening temperature of a thermoplastic resin material. On a mold in which spheres are two-dimensionally arranged on a substrate, a thermoplastic resin material for the base of a fly-eye lens plate heated to a temperature equal to or higher than the softening temperature is substantially half of the sphere described above. A step of pressing the lens so as to be buried in the thermoplastic resin material for the motherboard of the lens plate, and a step of forming the fly eye obtained as a state in which the concave portion is formed by the large number of spheres. A step of obtaining a master disc of a fly-eye lens plate having a surface on which the shape of the surface on which the concave portion due to the sphere is formed on the base plate of the lens plate is transferred; A process of obtaining a fly-eye lens plate stamper by performing electroforming. The method of manufacturing a fly-eye lens plate stamper. 3. A large number of components having the same size, which are made of a material having rigidity even at a temperature equal to or higher than the softening temperature of a thermoplastic resin material used in manufacturing a fly-eye lens plate mother plate. A molding in which spheres are two-dimensionally arranged on a substrate, and a space between the spheres on the substrate side of the plurality of spheres is filled with a material having plasticity even at a temperature equal to or higher than the softening temperature of the thermoplastic resin material. On the mold,
The thermoplastic resin material for the base of the fly-eye lens plate heated to a temperature equal to or higher than the softening temperature, in which approximately half of the sphere is buried in the thermoplastic resin material for the base of the fly-eye lens plate And the shape of the surface of the mother plate of the fly-eye lens plate on which the concave portions formed by the spheres are formed in the state where the concave portions formed by the large number of spheres are formed. And a step of obtaining a master plate of a fly-eye lens plate having a surface to which the image is transferred, and a step of performing electroforming on the master plate of the fly-eye lens plate to obtain a stamper of the fly-eye lens plate. Method of manufacturing the stamper of the eye lens plate. 4. A step of injecting the photocurable resin into a molding die in which a number of spheres having the same size are two-dimensionally arranged on a substrate in a container into which the photocurable resin is injected,
A step of irradiating light for curing of the photocurable resin from the side opposite to the substrate side with which the sphere is in contact, and solidifying the photocurable resin to near the surface including the center of the sphere, A step of obtaining a master disk of a fly-eye lens plate having a surface to which the shape of the surface on which the concave portion by the sphere is formed on the mother disk of the fly-eye lens plate formed through the process is transferred. And forming a fly-eye lens plate stamper by electroforming the master plate of the fly-eye lens plate. 5. A step of injecting a photocurable resin into a molding die in which a large number of opaque spheres having the same size are two-dimensionally arranged on a substrate in a container into which the photocurable resin is injected. And a step of irradiating light for curing of the photocurable resin from the side opposite to the substrate side with which the sphere is in contact, and solidifying the photocurable resin to near the surface including the center of the sphere, A step of removing a projection around the portion of the solidified photocurable resin where the sphere is formed by the sphere, and the sphere on the base of the fly-eye lens plate produced through the above-described steps. Obtaining a master plate of a fly-eye lens plate having a surface on which the shape of the surface on which the concave portion is formed is transferred, and performing electroforming on the master plate of the fly-eye lens plate to form a fly. Obtaining a stamper for the eye lens plate. The method of manufacturing a stamper for a metal plate. 6. A large number of spheres having the same size are two-dimensionally arranged on a substrate, and the space between the spheres on the substrate side of the large number of spheres is equal to or higher than the softening temperature of the thermoplastic resin material. At the same time, the resin is filled with a material having plasticity, and the thermoplastic resin material is heated to a temperature equal to or higher than the softening temperature, so that approximately half of the sphere is buried in the thermoplastic resin material and fused to the sphere. And forming a fly-eye lens plate stamper by electroforming the surface of the sphere in the above-mentioned mold to form a fly-eye lens plate stamper. Production method. 7. The substrate part of the container into which the photocurable resin is injected is made of a material transparent to light for curing the photocurable resin,
A step of injecting a photocurable resin into a container in which a number of spheres having the same size are two-dimensionally arranged on the substrate portion of the container, and a step of curing the photocurable resin from the substrate side of the container. Irradiating this light to solidify the photocurable resin up to near the surface including the center of the sphere, and integrate it with the substrate to form a stamper for the fly-eye lens plate. How to make a plate stamper. 8. A step of injecting the photocurable resin into a molding die in which a number of spheres having the same size are two-dimensionally arranged on a substrate in a container into which the photocurable resin is injected,
A step of irradiating light for curing of the photocurable resin from the side opposite to the substrate side with which the sphere is in contact and solidifying the photocurable resin up to near the surface including the center of the sphere to obtain a molding die And forming a stamper for the fly-eye lens plate by electroforming the surface of the sphere in the molding die.