JP2005346000A - Manufacturing method and device for optical article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method and a device for an optical article which can quickly and positively harden an light curing resin more than the conventional method, and can obtain a molding with high precision in a replica molding for an optical article using a photo curing resin. <P>SOLUTION: In a production method for an optical article, an ultraviolet-ray curing resin 6 is dropped on the surface of a mold 2 having a desired optical shape, the ultraviolet-ray curing resin is press-filled by a plane surface or a curved surface glass substrate 5, and light irradiation 7 is conducted to manufacture an optical article. An infrared light 8 to vibrate only the unsaturated binding part is irradiated at the unsaturated binding part in a molecule comprises the ultraviolet-ray curing resin. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for an optical article, and in particular, an optical article such as a composite optical element by so-called replica molding that obtains a desired optical surface shape by transferring a molding surface to an ultraviolet curable resin by a molding die. The present invention relates to a manufacturing method and a manufacturing apparatus.

Conventionally, when an optical article is manufactured, there is a replica molding technique as one of molding techniques suitable for mass production because of easy molding. Particularly, since it has excellent large area moldability and high transferability, it is used for molding composite optical elements such as aspherical lenses and diffractive optical elements. In this replica molding technique, a photocurable resin is dropped onto a mold surface having a reversal shape of a desired optical shape, and a lens blank is crimped and spread out from the mold surface. Is performed by curing the photocurable resin and releasing the photocurable resin together with the lens blank.
Examples of the main photocurable resin used in the above replica molding include acrylate resins and methacrylate resins. In the replica molding method, many proposals have been made so far in which such a photocurable resin is completely cured as soon as possible and high moldability is achieved.
For example, as a precedent technique for accelerating the curing of a photocurable resin, a method for improving the material itself, such as an increase in the amount of a photoinitiator or addition of a sensitizer, which is already a common technique It has been known. In addition, as a conventional technique for achieving high-precision moldability, a method for improving a material itself, such as addition of a release agent to a photocurable resin, which is already a general technique, is known.

Further, Patent Document 1 proposes a method of promoting the curing of the resin by heating the photocurable resin in replica molding to 30 ° C. or higher.
Further, in Patent Document 2, using a short wavelength blocking glass, a long wavelength side is first irradiated from the absorption wavelength of the photoinitiator to gradually advance the curing reaction, and then a short wavelength side is also irradiated to cure the curing reaction. There has been proposed a method for obtaining high-precision formability by promoting the above.
JP-A-10-152510 JP-A-5-181003

  As described above, in the case of replica molding of optical articles, for example, composite optical elements such as aspherical lenses and diffractive optical elements, the photo-curing resin used is cured as quickly as possible in consideration of productivity. Ingenuity to obtain a good moldability has been made. That is, when the photo-curing resin after molding is insufficiently cured, the uncured resin portion of the optical article is deformed with time, and the optical performance thereof is significantly reduced. In addition, even when moldability such as deformation of the resin shape or sink marks due to curing shrinkage of the resin occurs, the optical performance of the optical article is significantly reduced.

  However, in the case of the above-described method of improving the material itself, such as a method of adding a photoinitiator or a sensitizer of a photocurable resin, or a method of adding a release agent to a photocurable resin, By adding these auxiliaries to an optical resin having excellent optical properties, the optical properties are greatly reduced. For example, many new optical materials having excellent optical properties such as high refractive index-low dispersion and high dispersion have been developed in recent years, and the addition of an auxiliary agent to these precise optical materials has a high refractive index. And greatly reduce the transmittance.

Also, according to the above-described prior art Patent Document 1 or Patent Document 2, there are the following problems in obtaining higher precision moldability and more stable material characteristics.
First, although Patent Document 1 has an effect of improving the curing rate of the photocurable resin by heating, it requires a mold correction due to thermal expansion of the mold and a thermal control device, which greatly increases the cost. In particular, mold correction to a mold having a nano-level three-dimensional fine shape such as a diffractive optical element is extremely difficult. Moreover, the volume expand | swells and a viscosity falls by heating photocurable resin. For this reason, sink marks due to curing shrinkage appear more conspicuously, which becomes a factor of reducing the optical performance of an optical article such as a composite optical element.

  Moreover, in patent document 2, although there exists an effect which controls the progress of the hardening and improves a moldability by selecting the irradiation wavelength to photocurable resin, the light only by the ultraviolet light which a photoinitiator absorbs There is a limit to the degree of curing with only curing. Specifically, not all unsaturated bond portions of the components constituting the photocurable resin are cross-linked by ultraviolet light irradiation. In particular, it is considered that at least 10 to 20% by weight of an uncured component that cannot be completely crosslinked and polymerized remains even in the case of a methacrylate-based resin having a slow curing rate even when irradiated with a large amount of ultraviolet light. Furthermore, in such a thing of the patent document 2, when the glass substrate which hardly permeate | transmits ultraviolet light is used, the effect reduces, and a longer irradiation tact is also needed for photocuring the said photocurable resin. As a result, the productivity decreases.

  Therefore, in view of the above problems, the present invention, in replica molding of an optical article using a photocurable resin, cures the photocurable resin faster and more reliably than the conventional one, and provides high-precision moldability. An object of the present invention is to provide an optical article manufacturing method and manufacturing apparatus that can be obtained.

The present invention provides an optical article manufacturing method and manufacturing apparatus configured as follows.
That is, in the method for producing an optical article of the present invention, an ultraviolet curable resin is dropped on a mold surface having a desired optical shape, the ultraviolet curable resin is pressed and filled with a flat or curved glass substrate, and light irradiation is performed. In the method of manufacturing an optical article by manufacturing an optical article, the method includes a step of irradiating an unsaturated bond portion in a molecule constituting the ultraviolet curable resin with infrared light that vibrates only the unsaturated bond portion. It is characterized by that.
The optical article manufacturing apparatus of the present invention includes a mold having a desired optical shape, and a flat or curved glass substrate for press-filling the ultraviolet curable resin dropped on the mold surface. In an optical article manufacturing apparatus for replica-molding an optical article by irradiation, an ultraviolet irradiation means for irradiating the ultraviolet curable resin filled in the mold, and an ultraviolet curable resin simultaneously with the light irradiation of the ultraviolet irradiation means And means for irradiating the unsaturated bond part in the molecule constituting the infrared light with which only the unsaturated bond part is vibrated.
The optical article manufacturing apparatus of the present invention includes a mold having a desired optical shape, and a flat or curved glass substrate for press-filling the ultraviolet curable resin dropped on the mold surface. In an optical article manufacturing apparatus for replica-molding an optical article by irradiation, a first curing apparatus having an ultraviolet irradiation means for irradiating an ultraviolet curable resin filled in the mold, and the first curing apparatus Ultraviolet irradiation means for compensating for insufficient curing of the resin, and simultaneously with the ultraviolet irradiation of the ultraviolet irradiation means for compensating for the insufficient curing, the unsaturated bond portion in the molecule constituting the ultraviolet curable resin And a second curing device provided with a means for irradiating infrared light that vibrates only the coupling portion.

  According to the present invention, in replica molding of an optical article using a photocurable resin, it is possible to cure the photocurable resin more quickly and reliably than in the conventional one, and to obtain highly accurate moldability. An optical article manufacturing method and manufacturing apparatus can be realized.

Hereinafter, replica molding of an optical article using an ultraviolet curable resin will be described as an embodiment of the present invention.
FIG. 1 is a diagram showing a structural formula of an unsaturated bond portion of an acrylate ester in an ultraviolet curable resin used in the present embodiment, and FIG. 2 is a diagram showing a structural formula of an unsaturated bond portion of a methacrylate ester. is there.
Ultraviolet curable resins such as acrylate resins and methacrylate resins have these unsaturated bonds that cause cross-linking polymerization in the molecular structure of oligomers and monomers that are components thereof.

Next, the action of the general curing reaction will be described with reference to FIG. 3 using an acrylic ester as an example.
The photoinitiator I added to the ultraviolet curable resin is excited by ultraviolet light and photocleavaged to generate radicals I _a. And I _b . (FIG. 3A).
The generated radical I _a · (or I _b ·) acts on an acrylate ester portion such as an adjacent oligomer or monomer (FIG. 3B), thereby causing radical chain reaction (FIG. 3 ( c)).
As described above, in the ultraviolet curable resin, the curing reaction proceeds by cross-linking polymerization with an unsaturated bond portion of a monofunctional or polyfunctional component.

  FIG. 4 schematically shows a three-dimensional network structure when the components of the ultraviolet curable resin are cured. FIG. 4A shows the ultraviolet curable resin before curing, and FIG. 4B shows the ultraviolet curable resin after curing. In FIG. 4, = indicates an unsaturated bond portion, ● indicates a bond portion where unsaturated bond portions are bonded, and a solid line connecting them indicates a polymer chain other than the unsaturated bond portion. In the resin component having an unsaturated bond = at the end of the polymer chain shown in Fig. 4 (a), adjacent unsaturated bonds are bonded to each other by the chain reaction by the radicals described above. As shown in b), a network structure having mechanical strength is formed. However, in the formation process, there remains an unsaturated bond portion = that cannot be physically bonded due to limitations such as the adjacent distance. It is considered that at least 10 to 20% by weight of these remaining unsaturated bond portions remains as an uncured component in the cured resin. No matter how much ultraviolet light is irradiated to the remaining unsaturated bond portion, there is no adjacent unsaturated bond, so that no cross-linking polymerization is performed.

In producing an optical article such as a composite optical element using an ultraviolet curable resin, the remaining of these uncured components is not preferable. The more uncured components remain, the lower the refractive index of the composite optical element and the deformation of the element shape.
In order to crosslink and polymerize the unsaturated bond portion in the ultraviolet curable resin as much as possible, the adjacent distance that allows the unsaturated bond portion to bond to each other should be configured as much as possible. Specifically, a polymer containing an ultraviolet curable resin widens the range of motion by inducing stretching vibration or rotation of the polymer itself by applying heat or the like. In the unsaturated bond part in the ultraviolet curable resin, the wider the range of motion, the higher the possibility that the unsaturated bond part will be close to each other, so that the cross-linking polymerization becomes easier. It is generally known that curing is accelerated by applying heat to the photocurable resin with the same effect.

However, as described above, in the method of manufacturing an optical article such as a composite optical element, the means for applying heat to the ultraviolet curable resin requires mold correction or thermal control device due to thermal expansion of the mold, and further the optical element. There are problems such as degrading the optical performance.
In contrast, in the present embodiment, with respect to acrylic acid ester unit or methacrylate unit is an unsaturated bond portion in the ultraviolet curable resin, red wavenumber 2813cm ^-1 or 1658 cm ^-1 or 1179cm ^-1 A method of irradiating only external light is used.

That is, the infrared absorption at a wavenumber of 1658 cm ^-1 of the unsaturated bond portion is to induce stretching vibration of the carbon double bonds in unsaturated bonds unit, the infrared absorption at a wavenumber of 2813cm ^-1 or 1179cm ^-1 is the unsaturated It induces stretching vibration between carbon and hydrogen and in and out of the plane at the joint.
As a result, the unsaturated bond portion is activated and its range of motion is expanded, and the possibility that the unsaturated bond portion approaches each other is increased, so that cross-linking polymerization is facilitated. Furthermore, infrared light is generally called a heat ray and has the property of heating an object to be irradiated. However, in this embodiment, only a part of infrared light having a specific wavelength is irradiated to an ultraviolet curable resin. Therefore, unlike the case of irradiation over the entire wavelength region of infrared light, the heating of the resin can be greatly suppressed.
Also, the wave number of infrared light 2813Cm ^-1 or 1658 cm ^-1 or 1179cm ^-1 to induce vibration of the unsaturated bond portion varies depending on the characteristics and the temperature and pressure atmosphere of the polymer structure, excluding the unsaturated bond portion Is generally included in a range of ± 100 cm ⁻¹ .

Next, examples of the present invention will be described.
[Example 1]
In Example 1 of the present invention, the configuration and the embodiment of the present invention described above are applied to replica molding of a diffractive optical element which is a composite optical element. FIG. 5 is a schematic configuration diagram showing a composite optical element replica molding apparatus used for the camera lens in this embodiment.
In FIG. 5, 2 is a molding die, 3 is an inverted shape of the optical functional shape formed on the molding die 2, 4 is a lens blank holding member, and 5 is a lens blank. 6 is an ultraviolet curable resin that forms an optical functional shape, 7 is an ultraviolet irradiation lamp, 8 is an infrared light source, and 9 is a band-pass filter.

The molding die 2 is provided with a reversal shape 3 of a desired optical function shape on its molding surface. The molding die 2 is fixed, and a lens blank 5 is placed on a ring-shaped lens blank holding member 4 into which the molding die 2 is fitted. The center axis of the lens blank 5 and the molding die 2 are Axis alignment with the center of the molding surface is a depth of 1 mm in which the center and axis of the molding surface of the mold 2 are aligned with the entire circumference of the inner peripheral portion of the surface on which the lens blank 5 on the lens blank holding material 4 is placed. , A fitting portion having a width of about 1 mm is provided, and the lens blank 5 is fitted into the fitting portion. The lens blank 5 is made of a glass or plastic material, and has a flat surface or a curved surface on the optical surface.
The lens blank holding member 4 is formed in a ring shape and is held so as to be movable up and down. An appropriate amount of ultraviolet curable resin 6 is supplied onto the molding surface of the molding die 2 by a dispenser (not shown), and an ultraviolet irradiation lamp 7 is provided above the lens blank 5 with respect to the optical function surface of the molding die 2. Are installed so that they are perpendicularly incident.

As the ultraviolet curable resin 6, an acrylate-based or methacrylate-based optical resin in which radicals are generated from absorption of a photoinitiator near an ultraviolet wavelength of 365 nm is used, and the ultraviolet irradiation lamp 7 is a high-pressure mercury lamp or A light source having an oscillation peak in the vicinity of a wavelength of 365 nm of an ultrahigh pressure mercury lamp is used.
Infrared light source 8 such as a halogen lamp which is adjacent to the ultraviolet irradiation lamp 7, the infrared light is installed so as to incident on the optical function surface of the molding die 2, in between 2813Cm ^-1 or 1658 cm ^-1 Alternatively, a band pass filter 9 that transmits only an infrared wave number band of 1179 cm ⁻¹ (within ± 100 cm ⁻¹ ) is disposed.
As an alternative device for the infrared light source 8 and the band pass filter 9, an infrared laser such as a diode laser that oscillates the wave number can be used.

FIG. 6 shows a top view and a side view of the molding die 2 in the present embodiment. The fine shape forming the optical functional surface 3 has a blazed diffraction grating having a grating height of 5 to 20 μm and a grating width of 0.1 to 3 mm on a plane at an optical effective diameter of φ20 mm, as shown in the top view. Concentric with a convex shape toward the center.
FIG. 7 shows a diffractive optical element 1 that is ideally produced by the molding die 2 in this embodiment. The optical functional surface 3 ′ of the resin layer formed on the lens blank 5 is formed concentrically as a concave shape toward the center of the blazed diffraction grating, that is, as an inverted shape of the mold.

Next, the molding process of the diffractive optical element in the present embodiment will be described with reference to FIGS. First, an appropriate amount of UV curable resin 6 is supplied near the center of the molding surface of the molding die 2 by a dispenser (not shown), and a silane coupling process is performed on one side in advance to increase the adhesion to the resin. 5 is fitted into a fitting portion provided on the inner periphery of the ring-shaped lens blank holding member 4 with the coupling processing surface facing down. At this time, a mechanism for holding the lens blank 5 may be provided, such as a centering chuck or a bell clamp system.
Next, as shown in FIG. 8, the ring-shaped lens blank holding member 4 is lowered, the molding die 2 and the lens blank 5 are relatively approached, and the ultraviolet curable resin 6 is made to have a desired thickness and optical properties. Push to fill the outer circumference of the effective diameter. At this time, in order to prevent air bubbles from being mixed into the UV curable resin 6 and resin not filled in the mold shape of the mold, the liquid contact speed is adjusted in consideration of the viscosity of the resin and the wettability of the mold molding surface. There must be.

Next, the filled ultraviolet curable resin 6 is irradiated with ultraviolet light from an ultraviolet irradiation lamp 7 for 24 J (40 [mW / cm ² ] × 10 minutes), and at the same time, infrared light transmitted through the band-pass filter 9 is irradiated. irradiating infrared light of wave numbers 2813Cm ^-1 or 1658 cm ^-1 or 1179cm ^-1 from the light source 8. At this time, the irradiation intensity of the infrared light may not only be kept constant but may be continuously changed. At low infrared light intensity, the resin exhibits a slow curing reaction, and at strong infrared light intensity, the resin exhibits a rapid curing reaction. For example, by gradually changing the irradiation intensity of the resin from weak infrared light intensity to strong infrared light intensity, the resin sink due to a rapid curing reaction can be suppressed in the first half of the irradiation process, and the irradiation In the second half of the process, the resin can be fully cured.

After the polymerization and curing of the ultraviolet curable resin 6 is completed, the ring-shaped lens blank holding member 4 is raised to peel the diffractive optical element 1 composed of the ultraviolet curable resin 6 and the lens blank 5 from the molding die 2. Let
As described above, according to the present embodiment, since the ultraviolet curable resin 6 and the mold 2 are not heated, high-precision moldability is obtained, and the cured material is efficiently and sufficiently cured. An optical element can be obtained. In addition, it is possible to configure an optical system using such a diffractive optical element having excellent optical characteristics, and to apply them to an imaging apparatus or an observation apparatus.

[Example 2]
In Example 2 of the present invention, the above-described configuration and embodiment of the present invention are applied to replica molding of a diffractive optical element that is a composite optical element.
FIG. 9 is a schematic view showing the first curing device of the present embodiment. The apparatus configuration shown in FIG. 9 is not provided with the infrared light source 8 and the band pass filter 9 as compared with the apparatus configuration of the first embodiment. FIG. 10 is a schematic view showing a second curing apparatus of the present embodiment. The apparatus configuration shown in FIG. 10 includes an ultraviolet irradiation lamp 7 ′ for irradiating light to a single optical article or a plurality of optical articles, an infrared light source 8, and a band-pass filter 9 disposed between the infrared light source 8 and the optical article. It is comprised separately from the 1st hardening | curing apparatus shown in FIG. 9 and 10, the same members as those in the first embodiment shown in FIG.
First, an appropriate amount of UV curable resin 6 is supplied by a dispenser (not shown) to the vicinity of the center on the molding surface of the molding die 2 constituting the first curing device, and a silane cup for increasing the adhesion with the resin in advance. The lens blank 5 subjected to the ring treatment on one side is fitted into a fitting portion provided on the inner periphery on the ring-shaped lens blank holding member 4 with the coupling treatment surface down. At this time, a mechanism for holding the lens blank 5 may be provided, such as a centering chuck or a bell clamp system.

Next, as shown in FIG. 9, the ring-shaped lens blank holding member 4 is lowered, the molding die 2 and the lens blank 5 are brought relatively close to each other, and the ultraviolet curable resin 6 is made to have a desired thickness and optical properties. Push to fill the outer circumference of the effective diameter. At this time, in order to prevent air bubbles from being mixed into the UV curable resin 6 and resin not filled in the mold shape of the mold, the liquid contact speed is adjusted in consideration of the viscosity of the resin and the wettability of the mold molding surface. There must be. After irradiating the filled ultraviolet curable resin 6 with ultraviolet light from an ultraviolet irradiation lamp 7 for 0.6 J (10 [mW / cm ² ] × 1 minute), the ring-shaped lens blank holding member 4 is raised. Thus, the diffractive optical element 1 composed of the ultraviolet curable resin 6 and the lens blank 5 is peeled from the molding die 2.
The ultraviolet curable resin 6 at this time has resin strength and viscoelasticity that can withstand mold release, but the degree of curing of the resin is low and insufficient.

Therefore, as shown in FIG. 10, in order to compensate for insufficient curing of the resin, a second curing device installed independently of the molding device is used.
Here, the wave number 2813 cm from the infrared light source 8 transmitted through the band-pass filter 9 at the same time when the ultraviolet light from the ultraviolet irradiation lamp 7 ′ in the second curing apparatus is irradiated by 24 J (40 [mW / cm ² ] × 10 minutes). ^-1 or 1658 cm ⁻¹ or 1179 cm ⁻¹ of infrared light is irradiated. Thereby, the ultraviolet curable resin 6 constituting the diffractive optical element 1 is sufficiently cured. Furthermore, depending on the ultraviolet curable resin used, radicals generated by ultraviolet light irradiation may remain in the ultraviolet curable resin for several hours or more, so that only irradiation with infrared light without ultraviolet light irradiation is particularly important. Even so, sufficient curing of the resin is possible.

In the curing process shown here, one diffractive optical element is put into the post-curing apparatus. However, in consideration of productivity, a large amount of diffractive optical elements may be put at the same time. Since the light irradiation by the ultraviolet irradiation lamp 7 on the mold is also 1 minute, a significant reduction in molding tact time can be expected, and the production cost can be expected to be reduced.
As described above, according to this example, since the ultraviolet curable resin 6 and the molding die 2 are not heated, high-precision moldability is obtained, and the environment resistance which is efficiently and sufficiently cured is excellent. A diffractive optical element can be obtained at low cost. In addition, it is possible to configure an optical system using such a diffractive optical element having excellent optical characteristics, and to apply them to an imaging apparatus or an observation apparatus.

  Needless to say, the present invention is not limited to replica molding of diffractive optical elements as in the above embodiments, but can also be applied to replica molding of other composite optical elements such as aspherical lenses. is there.

It is a figure which shows the structural formula of the unsaturated bond part of acrylic ester in the ultraviolet curable resin used for embodiment of this invention. It is a figure which shows the structural formula of the unsaturated bond part of the methacrylic acid ester used for embodiment of this invention. It is a figure explaining the effect | action of the general hardening reaction in embodiment of this invention taking an acrylic ester as an example. It is a figure which shows typically a three-dimensional network structure when the component of the ultraviolet curable resin used for embodiment of this invention hardens | cures. It is a schematic block diagram which shows the replica shaping | molding apparatus of the composite type optical element used for the camera lens in Example 1 of this invention. It is sectional drawing and the top view of the shaping die in Example 1 of this invention. It is sectional drawing and a top view of the diffractive optical element by the shaping die in Example 1 of this invention. It is a schematic block diagram which shows the replica shaping | molding apparatus explaining the shaping | molding process of the diffractive optical element in Example 1 of this invention. It is a schematic block diagram which shows the replica shaping | molding apparatus explaining the shaping | molding process of the diffractive optical element by the 1st hardening apparatus in Example 2 of this invention. It is a schematic block diagram which shows the replica shaping | molding apparatus explaining the shaping | molding process of the diffractive optical element by the 2nd hardening | curing apparatus in Example 2 of this invention.

Explanation of symbols

1: diffractive optical element 2: molding die 3: optical functional surface 3 ′: optical functional surface 4: lens blank holding member 5: lens blank 6: ultraviolet curable resin 7: ultraviolet irradiation lamp 7 ′: ultraviolet irradiation lamp 8: Infrared light source 9: Band pass filter

Claims (8)

Manufacture of an optical article in which an ultraviolet curable resin is dropped onto a mold surface having a desired optical shape, the ultraviolet curable resin is pressed and filled with a flat or curved glass substrate, and irradiated with light to produce an optical article. In the method
A method for producing an optical article, comprising the step of irradiating an unsaturated bond portion in a molecule constituting the ultraviolet curable resin with infrared light that vibrates only the unsaturated bond portion.   2. The method for producing an optical article according to claim 1, wherein the ultraviolet curable resin has an unsaturated bond portion in the resin component of an acrylic ester or a methacrylic ester. Characterized in that said infrared light that vibrates only unsaturated bond portion of the ultraviolet curable resin, infrared light that is within ± 100 cm ^-1 around the wavenumber 2813cm ^-1 or 1658 cm ^-1 or 1179cm ^-1 A method for producing an optical article according to claim 1 or 2.   The method for producing an optical article according to any one of claims 1 to 3, wherein the irradiation with infrared light is performed simultaneously with irradiation with ultraviolet light to the ultraviolet curable resin.   The irradiation of the infrared light is performed by irradiating the ultraviolet curable resin with ultraviolet light once and then simultaneously with the ultraviolet light. A method for manufacturing an optical article. The method for manufacturing an optical article according to claim 1, wherein the optical article is a composite optical element such as a diffractive optical element. Production of an optical article comprising a mold having a desired optical shape and a flat or curved glass substrate for press-filling an ultraviolet curable resin dripped onto the mold surface, and replicating the optical article by light irradiation In the device
UV irradiation means for irradiating the ultraviolet curable resin filled in the mold,
Simultaneously with the light irradiation of the ultraviolet irradiation means, means for irradiating the unsaturated bond part in the molecule constituting the ultraviolet curable resin with infrared light that vibrates only the unsaturated bond part,
An apparatus for manufacturing an optical article, comprising: Production of an optical article comprising a mold having a desired optical shape and a flat or curved glass substrate for press-filling an ultraviolet curable resin dripped onto the mold surface, and replicating the optical article by light irradiation In the device
A first curing device having ultraviolet irradiation means for irradiating the ultraviolet curable resin filled in the mold;
An ultraviolet irradiation means for making up for insufficient curing of the resin by the first curing device, and an unsaturated bond part in the molecule constituting the ultraviolet curable resin simultaneously with the ultraviolet irradiation of the ultraviolet irradiation means for making up for the insufficient curing A second curing device comprising: means for irradiating infrared light that vibrates only the unsaturated bond portion;
An apparatus for manufacturing an optical article, comprising:

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