JP2007164058A - OPTICAL SUBSTRATE, MOLD, AND COMPOSITE OPTICAL COMPONENT - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a composite optical component capable of obtaining a predetermined resin layer thickness, and an optical substrate and a mold used in the method.
An optical substrate 1 is formed by integrating a convex lens-shaped portion 2 and a flat plate-shaped portion 3 on the outer lower surface of a portion of the flat lens-shaped portion of the convex lens-shaped portion 2 that is optically effective. Three convex portions 4 are provided at intervals of 120 °. The convex portion 4 is formed by pressing an energy curable resin between a mold and another optical base material and then pressing the energy curable resin and then curing the energy curable resin. When contacting a flat reference surface (a reference surface on which the point where the convex portion abuts is on the same plane) or fitting into a concave portion formed thereon, the optical substrate 1 and the opposing gold It determines the size of the gap between the mold and another optical substrate. By using this optical substrate 1, the thickness of the energy curable resin is determined according to the height of the convex portion 4, and becomes an accurate thickness.
[Selection] Figure 1

Description

  The present invention relates to an optical substrate, a mold, and a method for manufacturing a composite optical component.

  There is a lens manufacturing method in which a layer of an energy curable resin such as an ultraviolet curable resin is added to the optical surface of a lens substrate to obtain a new optical surface. Examples of the lens base material in this case include those obtained by press-molding glass, those obtained by adding a resin layer on glass, and plastic lenses. In the step of adding the resin layer to the lens base material, for example, when the surface of the resin layer to be newly added is the surface shape reversal surface of the mold, after dropping the uncured energy curable resin on the mold, It is necessary to push the base lens to the point where the distance between the surface and the lens base material is the same as the thickness of the resin layer to be added or the thickness considering the curing shrinkage, and spread the uncured energy curable resin. . Conventionally, in this process, the thickness of the lens layer to be added is determined by placing the jig on the lower side, placing the jig holding the lens base on the upper side, and pressing down until the jig contacts the mold. It was.

  However, if there is a deficiency in the mounting of the lens on the jig, and the lens is not in a predetermined position in the jig, the thickness of the resin layer to be added becomes thin or the lens base material to which the resin layer is added There was a problem that the surface and the surface of the mold facing it were not parallel.

  The present invention has been made in view of such circumstances, and provides a composite optical component manufacturing method capable of obtaining a predetermined resin layer thickness, and an optical substrate and mold used in the method. Let it be an issue.

  A first means for solving the above-mentioned problem is an optical substrate used for manufacturing a composite optical component obtained by adding an energy curable resin to the surface of an optical substrate, and the thickness of the energy curable resin is The optical base material is characterized in that a convex portion for limiting the thickness is formed on the surface.

  A second means for solving the above-described problem is a mold used for manufacturing a composite optical component obtained by adding an energy curable resin to the surface of an optical substrate, and the thickness of the energy curable resin is The metal mold | die characterized by the convex part which restrict | limits being formed in the surface.

  A third means for solving the above-mentioned problem is the second means, wherein the height of the convex portion is variable.

  A fourth means for solving the above problem is a mold used for manufacturing the composite optical component in combination with the optical base material of the first means, and the surface of the optical base material is formed on the surface. The mold has a concave part into which a convex part is fitted, and the optical base and the mold are relatively positioned by fitting the convex part into the concave part.

  The fifth means for solving the above-mentioned problems is the production of the composite optical component in combination with either the optical base material of the first means or the mold of the second means or the third means. The optical base material used in the invention has a concave portion into which the convex portion of the optical base material or the convex portion of the mold is fitted, and the convex portion is fitted into the concave portion. The optical base material is characterized in that any one of the means to the third means and the optical base material are relatively positioned.

  A sixth means for solving the above-mentioned problem is that an energy curable resin is filled between the optical base material as the first means and a mold having a flat reference surface, and the convex portion The energy curable resin is pressed with the optical base material and the mold so that the reference surface is in contact, and then the energy curable resin is cured to be integrated with the optical base material. A method for producing a composite optical component comprising a step of peeling a mold resin from the mold.

  A seventh means for solving the above problem is that an energy curable resin is filled between the optical base material as the first means and another optical base material having a flat reference surface, A method of manufacturing a composite optical component comprising the steps of pressing the energy curable resin with both optical bases so that a convex portion and the reference surface are in contact with each other, and then curing the energy curable resin It is.

  An eighth means for solving the above-mentioned problem is that an energy curable resin is filled between the optical base material as the first means and the mold as the fourth means, A convex portion is fitted into the concave portion of the mold, the energy curable resin is pressed with the optical base material and the mold, and then the energy curable resin is cured, and then the optical base material and A method for producing a composite optical component, comprising a step of peeling the integrated energy curable resin from the mold.

  A ninth means for solving the above-mentioned problem is that an energy curable resin is filled between the optical base material which is the first means and the optical base material which is the fifth means, and the first means The convex portion of the optical base material as the means is fitted into the concave portion of the optical base material as the fifth means, the energy curable resin is pressed with both optical base materials, and then the energy curable resin is cured. It is a manufacturing method of the composite type optical component characterized by having the process to make.

  A tenth means for solving the above problem is that an energy curable resin is filled between the mold which is the second means or the third means and an optical substrate having a flat reference surface. The energy curable resin is pressed with the optical base and the mold so that the convex portion and the reference surface are in contact with each other, and then the energy curable resin is cured to be integrated with the optical base. A method for producing a composite optical component, comprising the step of peeling the energy curable resin from the mold.

  The eleventh means for solving the above problem is that an energy curable resin is filled between the mold as the second means or the third means and the optical substrate as the fifth means, The convex part of the mold is fitted into the concave part of the optical base and the energy curable resin is pressed with the mold and the optical base, and then the energy curable resin is cured, A method for producing a composite optical component comprising a step of peeling the energy curable resin integrated with the optical base material from the mold.

  A twelfth means for solving the problem is any one of the sixth means to the eleventh means, wherein at least one of the optical base material and the mold is pressed when the energy curable resin is pressed. It is characterized by pressing through an elastic body.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the composite type optical component which can obtain predetermined | prescribed resin layer thickness, the optical base material used for the method, and a metal mold | die can be provided.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an optical substrate which is an example of an embodiment of the present invention. 1A is a side view, and FIG. 1B is a bottom view. The optical substrate 1 is a unit in which a convex lens-shaped portion 2 and a flat plate-shaped portion 3 are integrated. Among the flat plate-shaped portions, three convex portions are formed on the outer lower surface of a portion of the optically effective convex lens-shaped portion 2. The parts 4 are provided at 120 ° intervals. The convex portion 4 is formed by pressing an energy curable resin between a mold and another optical base material and then pressing the energy curable resin and then curing the energy curable resin. When contacting with a flat reference surface (reference surface where the point of contact of the convex portion is on the same plane, the same applies hereinafter) or when fitted into a concave portion formed thereon, the optical substrate 1 and these The size of the gap between the opposing mold and other optical base material is determined. By using this optical substrate 1, the thickness of the energy curable resin is determined according to the height of the convex portion 4, and becomes an accurate thickness.

  2A and 2B are views showing a mold as an example of an embodiment of the present invention, wherein FIG. 2A is a plan view and FIG. 2B is a side view. Three protrusions 6 are provided at intervals of 120 ° on the outer surface of the effective surface of the mold 5. In the process of pressing the energy curable resin between the convex portions 6 and the optical substrate, and then curing the energy curable resin, the convex portion 6 abuts on the planar reference surface of the opposite optical substrate, When fitted in the recesses formed in these, the size of the gap between the mold 5 and the opposing optical base material is determined. By using this mold 5, the thickness of the energy curable resin is determined in accordance with the height of the convex portion 6 and becomes an accurate thickness. In FIG. 2, the convex portion 6 is formed integrally with the mold 5, but the convex portion is formed by a screw that is fitted into the mold 5 or penetrates the mold 5. Thus, the height of the convex portion can be made variable, such as changing the height of the convex portion by turning a screw.

  3A and 3B are views showing a mold as an example of an embodiment of the present invention, where FIG. 3A is a plan view and FIG. 3B is a cross-sectional view taken along line AA. Three concave portions 8 are provided at intervals of 120 ° on the outer surface of the surface effective as the mold of the mold 7. This is used, for example, in combination with the optical substrate 1 shown in FIG. 1, and the optical substrate 1 and the mold are formed by fitting the convex portion 4 of the optical substrate 1 into the concave portion 8 of the mold 7. The relative positioning of the mold 7 is performed. When positioned, the gap between the optical substrate 1 and the mold 7 matches the desired thickness of the energy curable resin. Therefore, an energy curable resin is sandwiched between the optical substrate 1 and the mold 7, and the convex portion 4 of the optical substrate 1 is fitted into the concave portion 8 of the mold 7. And then pressing the energy curable resin, then curing the energy curable resin, and then peeling the energy curable resin integrated with the optical substrate 1 from the mold 7 to the surface of the optical substrate 1 A composite optical component in which an energy curable resin having a desired thickness and a desired surface shape (in which the surface shape of the mold 7 is reversely transferred) is integrated is obtained. In this case, not only the distance between the optical substrate 1 and the mold 7 but also the pattern formed on the surface of the mold 7 and the optical substrate 1 can be positioned.

  4A and 4B are views showing an optical substrate as an example of an embodiment of the present invention, wherein FIG. 4A is a cross-sectional view taken along line BB in FIG. 4B, and FIG. 4B is a bottom view. Three recesses 10 are provided at intervals of 120 ° on the outer lower surface of the optically effective surface of the optical substrate 9. This is used in combination with, for example, the mold 5 shown in FIG. 2, and the optical base 9 and the mold are fitted by fitting the convex part 6 of the mold 5 into the concave part 10 of the optical base 9. The relative positioning of 5 is performed. When positioned, the gap between the optical substrate 9 and the mold 5 matches the desired thickness of the energy curable resin. Therefore, an energy curable resin is sandwiched between the optical base material 9 and the mold 5, and the convex portion 6 of the mold 5 is fitted into the concave portion 10 of the optical base material 9. And then pressing the energy curable resin, then curing the energy curable resin, and then peeling off the energy curable resin integrated with the optical base material 9 from the mold 5 to the surface of the optical base material 9 A composite optical component in which an energy curable resin having a desired thickness and a desired surface shape (transferred from the surface shape of the mold 5) is integrated is obtained. In this case, not only the distance between the optical substrate 9 and the mold 5 but also the pattern formed on the surface of the mold 5 and the optical substrate 9 can be positioned.

  The optical base material 9 as shown in FIG. 4 can also be used in the case of manufacturing a composite optical component by forming an energy curable resin layer with the optical base material 1 as shown in FIG. FIG. 5 shows an example of a composite optical component manufactured in this way. The convex part 4 of the optical base material 1 is fitted into the concave part 10 of the optical base material 9 so that the optical base material 1 and the optical base material 9 are aligned, and the energy curable resin layer 11 is filled therebetween. .

  If the relationship between the convex portion and the concave portion described above only determines the thickness of the energy curable resin, the positional relationship between the optical substrates or between the optical substrate and the mold is the thickness of the energy curable resin. It may be movable in a direction perpendicular to the direction. However, if positioning is also performed in these directions, the shape in which the positional relationship between the optical base materials or between the optical base material and the mold is determined three-dimensionally when the convex portion and the concave portion are fitted. It is necessary to be.

  Various shapes such as a cylinder, an elliptical column, a prism, a truncated cone, and a truncated pyramid can be adopted as the shape of the convex portion, and the shape of the concave portion can be appropriately determined corresponding to these.

  Hereinafter, an example of a method for manufacturing a composite optical component using the optical substrate 1 shown in FIG. 1 as an example of an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 6, the optical substrate 1 is held on the holding table 12, and the mold 15 is supported on the support table 13 via the elastic member 14. In this state, the energy curable resin is dropped on the surface of the mold 15. And the support stand 13 is raised.

  Then, as shown in FIG. 7, the convex portion 4 of the optical base 1 comes into contact with the planar surface of the mold 15, and the thickness of the energy curable resin 16 is determined by the height of the convex portion 4. It becomes thickness. At this time, since the mold 15 is pressed through the elastic member 14, even if a strong pressing force is applied, it is absorbed by the deformation of the elastic member 14, and the optical substrate 1 is not damaged. Therefore, the convex part 4 of the optical base material 1 and the surface of the metal mold | die 15 can be contact | abutted reliably. In this state, the energy curable resin is cured. For example, when the energy curable resin is an ultraviolet curable resin, it is cured by irradiation with ultraviolet rays. Thereafter, the support table 13 is lowered to widen the distance from the holding table 12, and the energy curable resin 16 integrated with the optical substrate 1 is peeled off from the mold 15.

  It should be noted that only the optically effective portion may be left out of the composite optical component thus completed, and the portion where the convex portion 4 is formed may be removed to obtain a finished product.

It is a figure which shows the optical base material which is an example of embodiment of this invention. It is a figure which shows the metal mold | die which is an example of embodiment of this invention. It is a figure which shows the metal mold | die which is an example of embodiment of this invention. It is a figure which shows the optical base material which is an example of embodiment of this invention. It is a figure which shows the example of the composite type optical components manufactured with the manufacturing method which is embodiment of this invention. It is a figure which shows the example of the manufacturing method of the composite type optical component which is embodiment of this invention. It is a figure which shows the example of the manufacturing method of the composite type optical component which is embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Optical base material, 2 ... Convex lens shape part, 3 ... Flat plate shape part, 4 ... Convex part, 5 ... Mold, 6 ... Convex part, 7 ... Mold, 8 ... Concave part, 9 ... Optical base material, 10 ... Concave part, 11 ... energy curable resin layer, 12 ... holding base, 13 ... support base, 14 ... elastic member, 15 ... mold, 16 ... energy curable resin

Claims (12)

An optical base material used in the manufacture of a composite optical component obtained by adding an energy curable resin to the surface of an optical base material, wherein a convex portion that limits the thickness of the energy curable resin is formed on the surface. An optical substrate characterized by that. A mold used for manufacturing a composite optical component formed by adding an energy curable resin to the surface of an optical substrate, and having a convex portion on the surface for limiting the thickness of the energy curable resin. Mold characterized by. The mold according to claim 2, wherein the height of the convex portion is variable. A mold used in the manufacture of the composite optical component in combination with the optical base material according to claim 1, wherein the mold has a concave part into which the convex part of the optical base material is fitted, and the concave part includes the concave part. A mold wherein the optical base and the mold are positioned relative to each other by fitting a convex portion. An optical substrate used in the manufacture of the composite optical component in combination with the optical substrate according to claim 1 or the mold according to claim 2 or 3, wherein the optical substrate is formed on the surface. 4. The optical base material according to claim 1 or the gold according to claim 2 or 3, wherein the convex portion of the mold or the convex portion of the mold has a concave portion, and the convex portion is fitted into the concave portion. An optical substrate characterized in that relative positioning between a mold and the optical substrate is performed. An energy curable resin is filled between the optical substrate according to claim 1 and a mold having a flat reference surface, and the optical substrate and the reference surface are in contact with each other so that the convex portion and the reference surface are in contact with each other. Pressing the energy curable resin with a mold, then curing the energy curable resin, and peeling the energy curable resin integrated with the optical substrate from the mold. A method for producing a composite optical component. An energy curable resin is filled between the optical substrate according to claim 1 and another optical substrate having a flat reference surface so that the convex portion and the reference surface are in contact with each other. A method for producing a composite optical component, comprising: pressing the energy curable resin with a base material, and thereafter curing the energy curable resin. An energy curable resin is filled between the optical base material according to claim 1 and the mold according to claim 4, and the convex portion of the optical base material is fitted into the concave portion of the mold, so that the optical The energy curable resin is pressed with a base material and the mold, and then the energy curable resin is cured, and then the energy curable resin integrated with the optical base material is peeled from the mold. A method for manufacturing a composite optical component, comprising the step of: An energy curable resin is filled between the optical base material according to claim 1 and the optical base material according to claim 5, and the convex portion of the optical base material according to claim 1 is formed according to claim 5. A method for producing a composite optical component, comprising: a step of fitting into a concave portion of an optical base material, pressing the energy curable resin with both optical base materials, and thereafter curing the energy curable resin. 4. An energy curable resin is filled between the mold according to claim 2 or 3 and an optical substrate having a flat reference surface, and the optical portion is brought into contact with the convex portion. Pressing the energy curable resin with a base material and the mold, then curing the energy curable resin, and peeling the energy curable resin integrated with the optical base material from the mold A method for producing a composite optical component, comprising: An energy curable resin is filled between the mold according to claim 2 or claim 3 and the optical substrate according to claim 5, and the convex portion of the mold is fitted into the concave portion of the optical substrate. The energy curable resin is pressed between the mold and the optical substrate, and then the energy curable resin is cured, and then the energy curable resin integrated with the optical substrate is A method for producing a composite optical component, comprising a step of peeling from a mold. The composite according to any one of claims 6 to 11, wherein at least one of the optical base material and the mold is pressed through an elastic body when the energy curable resin is pressed. Of manufacturing mold optical components.

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