JP2017032871A - Adhesion and fixing method of optical assembly and optical assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow each assembly component part of an optical assembly to be fixed with a high strength and high accuracy in an adhesion and fixing method of the optical assembly.SOLUTION: An adhesion and fixing method of an optical assembly includes: a step of assembling a plurality of assembly component parts by interposing an ultraviolet ray curable adhesive and a thermosetting adhesive (Step 1); a step of relatively movably holding each of the plurality of assembly component parts in a state in which the ultraviolet ray adhesive and the thermosetting adhesive are uncured and adjusting a relative position of the plurality of assembly component parts (Step 2); a step of curing the ultraviolet ray adhesive in a state in which the plurality of assembly component parts is held at a position after adjusted (Step 3); a step of holding one from among the plurality of assembly component parts and hold-releasing the other from among the plurality of assembly component parts after the ultraviolet ray adhesive is cured (Step 4); and curing the thermosetting adhesive in a state in which one from among the plurality of assembly component parts is held (Step 5).SELECTED DRAWING: Figure 2

Description

  The present invention relates to an adhesive fixing method for an optical assembly and an optical assembly.

Conventionally, when forming an optical assembly including an optical component such as a lens, assembly component parts constituting the optical assembly may be bonded and fixed together.
When bonding and fixing, the position of the assembly components can be adjusted by holding the assembly components with a relatively movable holding jig. For this reason, it may be used for manufacturing a lens unit that requires adjustment of the lens arrangement position.
Examples of the adhesive used for bonding the optical assembly include an ultraviolet curable adhesive and a thermosetting adhesive.
For example, Patent Document 1 discloses an indirect bonding structure in which a first member holding a lens and a second member holding an imaging element are bonded using an ultraviolet curable adhesive via a fixing member. An imaging device is described which is joined by a filled adhesive structure filled with a thermosetting adhesive.

JP 2010-263606 A

However, the conventional techniques as described above have the following problems.
Since the ultraviolet curable adhesive does not need to be heated, it is suitable for high-precision adhesive fixing of optical components. However, the ultraviolet curable adhesive has a problem that the adhesive strength is inferior to that of the thermosetting adhesive.
On the other hand, the thermosetting adhesive needs to be heated to be cured. For this reason, the relative position after hardening may differ from the position at the time of adjustment by the difference in the coefficient of thermal expansion of the assembly component parts and the holding jig for holding them.
Patent Document 1 describes that an ultraviolet curing adhesive and a thermosetting adhesive are used in combination.
However, in the technique described in Patent Document 1, since the ultraviolet curable adhesive is applied to a fixing member disposed between the lens cell and the substrate, the lens cell and the substrate are indirectly bonded. . On the other hand, the thermosetting adhesive is applied and cured directly between the lens cell and the substrate.
For this reason, if heat is applied during thermosetting, the cured portion and fixing member by the ultraviolet curable adhesive between the lens cell and the substrate, or the holding jig that holds the lens cell and the substrate is thermally deformed. The position at the time of adjustment may change.
In particular, when the lens is adhesively fixed to the holding frame after adjusting the eccentricity of the lens, even a slight misalignment is often unacceptable. It may not be obtained.

  In order to avoid such problems due to adhesion and fixing, it is also conceivable to use a spacer for adjusting the position of the assembly components. However, in this case, since the adjustment position measurement and the spacer arrangement cannot be performed at the same time, it is necessary to alternately perform the adjustment position measurement operation and the spacer attachment / detachment operation. For this reason, there exists a problem that position adjustment and fixing require much time.

  The present invention has been made in view of the above problems, and an optical assembly adhesive fixing method and an optical assembly capable of fixing each assembly component of the optical assembly with high strength and high accuracy. The purpose is to provide.

  In order to solve the above-described problem, the method for bonding and fixing an optical assembly according to the first aspect of the present invention includes fixing an optical assembly by bonding and fixing a plurality of assembly components including assembly components having optical components. A method for bonding and fixing an optical assembly for forming a three-dimensional structure, wherein an ultraviolet curable adhesive and a thermosetting adhesive are interposed between components to be fixed among the plurality of assembly components. And holding the plurality of assembly components in a relatively unmovable state with the ultraviolet curing adhesive and the thermosetting adhesive being uncured, respectively, and adjusting the relative positions of the plurality of assembly components. And curing the ultraviolet curable adhesive in a state where the plurality of assembly components are held at the adjusted positions, and after the ultraviolet curable adhesive is cured, one of the plurality of assembly components. Holding and releasing the other of the plurality of assembly components, and curing the thermosetting adhesive in a state of holding one of the plurality of assembly components. ,including.

  An optical assembly according to a second aspect of the present invention is an optical assembly in which a plurality of assembly components including an assembly component having an optical component are bonded and fixed via an adhesive curing portion. Of the assembly components, the first assembly component and the second assembly component that are bonded and fixed to each other have holding portions at portions that can be held and released independently of each other, The adhesive cured portion is fitted with a gap that is relatively movable in an uncured state, and the adhesive cured portion between the first assembly component and the second assembly component is: An ultraviolet curing adhesive curing portion formed by curing an ultraviolet curing adhesive filled in a first region between the first assembly component and the second assembly component; and First assembly component and front Containing a thermosetting adhesive hardened portion formed by the thermosetting adhesive filled in the second region is cured between the second assembly components.

  According to the method for bonding and fixing an optical assembly and the optical assembly of the present invention, each assembly component is held to cure the UV-curing adhesive and to cure the thermosetting adhesive. Since one can be held and the other can be released, each assembly component of the optical assembly can be fixed with high strength and high accuracy.

It is a typical sectional view showing an example of an optical assembly of a 1st embodiment of the present invention, an A view, and a BB sectional view. It is a flowchart which shows the flow of the adhesion fixing method of the optical assembly of the 1st Embodiment of this invention. It is process explanatory drawing at the time of hardening an ultraviolet curing adhesive in the adhesion fixing method of the optical assembly of the 1st Embodiment of this invention. It is process explanatory drawing at the time of hardening a thermosetting adhesive in the adhesion fixing method of the optical assembly of the 1st Embodiment of this invention. It is typical sectional drawing which shows an example of the optical assembly of the 2nd Embodiment of this invention, and CC sectional drawing. It is typical sectional drawing which shows an example of the 1st assembly component used for the optical assembly of the 2nd Embodiment of this invention. It is typical sectional drawing which shows an example of the 2nd assembly component used for the optical assembly of the 2nd Embodiment of this invention. It is process explanatory drawing at the time of hardening an ultraviolet curing adhesive in the adhesion fixing method of the optical assembly of the 2nd Embodiment of this invention. It is process explanatory drawing at the time of hardening a thermosetting adhesive in the adhesion fixing method of the optical assembly of the 2nd Embodiment of this invention. It is typical sectional drawing which shows an example of the optical assembly of the 3rd Embodiment of this invention. It is process explanatory drawing at the time of hardening an ultraviolet curing adhesive in the adhesion fixing method of the optical assembly of the 3rd Embodiment of this invention. It is process explanatory drawing at the time of hardening a thermosetting adhesive in the adhesion fixing method of the optical assembly of the 3rd Embodiment of this invention. It is typical sectional drawing which shows an example of the optical assembly of the 4th Embodiment of this invention. It is typical sectional drawing which shows an example of the optical assembly of the 5th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In all the drawings, even if the embodiments are different, the same or corresponding members are denoted by the same reference numerals, and common description is omitted.

[First Embodiment]
An optical assembly according to a first embodiment of the present invention will be described.
FIG. 1A is a schematic cross-sectional view showing an example of the optical assembly according to the first embodiment of the present invention. FIG.1 (b) is the A view in FIG.1 (a). FIG.1 (c) is BB sectional drawing in Fig.1 (a).
In addition, since each drawing is a schematic diagram, the dimension and shape are exaggerated or simplified (the same applies to the following drawings).

  In this specification, for example, when describing the relative position with respect to a member such as an axial shape or a cylindrical shape that can specify an axial line such as a central axis or a lens optical axis, the direction along the axial line is a direction that circulates around the axial line. The direction along the line crossing the axis in the circumferential direction and the plane orthogonal to the axis may be referred to as the radial direction. In particular, the direction along the lens optical axis may be referred to as the optical axis direction. In the radial direction, the direction away from the axis may be referred to as the radially outer side, and the direction approaching the axis may be referred to as the radially inner side.

As shown in FIG. 1 (a), the optical assembly 1 of this embodiment includes a first part 2 (an assembly component, a first assembly component) and a second part 3 (an assembly component, a first component). The two assembly components) are adjusted with respect to each other, and then bonded and fixed by an adhesive fixing method for an optical assembly according to this embodiment described later.
The optical assembly 1 includes a first part 2, a second part 3, an ultraviolet curable adhesive curing part 4, and a thermosetting adhesive curing part 5.

The application is not particularly limited as long as the optical assembly 1 includes at least one optical component. When the optical assembly 1 includes a lens, it can be used as an appropriate optical lens unit used for, for example, a camera, a microscope, an endoscope, and the like.
However, the optical component included in the optical assembly 1 is not limited to a lens. The optical component included in the optical assembly 1 may be an optical component such as a cover glass, a mirror, a prism, a filter, or an optical fiber. Furthermore, the optical component included in the optical assembly 1 may be, for example, an imaging element, a light emitting element, or a light receiving element used in the imaging apparatus.
The optical assembly 1 may be in the form of a product itself, such as an interchangeable lens, or may be a part fixed to a part of the product. Furthermore, the optical assembly 1 may be a semi-finished product such as an exchange unit that constitutes a part of the product, or a partial assembly that appears only in the manufacturing process of the product.

In the present embodiment, in the optical assembly 1, at least one of the first component 2 and the second component 3 includes an optical component. At least one of the first component 2 and the second component 3 is the optical component itself or a subassembly including the optical component.
When at least one of the first component 2 and the second component 3 is composed of a subassembly including an optical component, it may be a subassembly including a plurality of members in addition to the optical component.
When at least one of the first part 2 and the second part 3 is composed of a subassembly, the members in the subassembly are fixed to each other by appropriate means, so that the relative position of each other in the subassembly is constant. Kept in a relationship.

As shown in FIGS. 1A and 1B, the first component 2 has a substantially cylindrical shape (including a cylinder).
An outer peripheral surface 2a at one end of the first component 2 constitutes a holding portion 2A that can be held by a holding jig 9 (see FIG. 3) described later.
The holding part 2A may be a metal or a resin as long as it has rigidity enough to prevent deformation by holding the holding jig 9. However, optical surfaces (for example, a lens surface, a mirror surface, an element surface, etc.) in the optical component are not formed on the holding portion 2A.
2 A of holding parts may be formed in the perimeter of the outer peripheral surface 2a. However, the holding portion 2A may be formed so as to be separated in the circumferential direction as long as it can be held in a radial direction by a holding jig 9 described later.

On the outer peripheral surface 2a, a second adhesive surface 2C is formed at the end opposite to the holding portion 2A in the axial direction.
The second adhesive surface 2C may be a smooth surface or a rough surface as long as the required adhesive strength is obtained. Further, the second bonding surface 2C may be an uneven surface. The material of the second bonding surface 2C may be metal or resin, for example.
The second adhesive surface 2C may be formed continuously in the circumferential direction, or may be formed separated in the circumferential direction. Below, the example currently formed over the perimeter of the outer peripheral surface 2a is demonstrated as an example.

On the outer peripheral surface 2a, a first adhesive surface 2B is formed between the holding portion 2A and the second adhesive surface 2C.
The first adhesive surface 2B may be a smooth surface or a rough surface as long as the required adhesive strength is obtained. Further, the first bonding surface 2B may be an uneven surface. The material of the first bonding surface 2B may be, for example, a metal or a resin.
The 1st adhesion surface 2B may be formed continuously in the circumferential direction, and may be formed spaced apart in the circumferential direction. Below, the example currently formed over the perimeter of the outer peripheral surface 2a is demonstrated as an example.
In the present embodiment, an example in which the outer shape of the first component 2 is substantially cylindrical has been described. However, the outer shape of the first component 2 is not particularly limited as long as it can be inserted into the inner peripheral surface 3c of the cylindrical portion 3a of the second component 3 described later at least in the range excluding the holding portion 2A. For example, the outer shape of the first component 2 may be a prismatic shape.

  As shown in FIGS. 1A and 1C, the second component 3 is formed at a cylindrical portion 3a having a substantially cylindrical shape (including a cylindrical case) and one end portion in the axial direction of the cylindrical portion 3a. And a bottom portion 3b.

The inner diameter of the inner peripheral surface 3c of the cylindrical portion 3a has such a size that the first component 2 can be inserted into the inside in a range excluding at least the holding portion 2A.
When the first component 2 is inserted, the gap dimension formed between the outer peripheral surface 2a of the first component 2 and the inner peripheral surface 3c of the second component 3 is the first component 2 and the second component 3 It is larger than the radial position adjustment amount.

  When the second component 3 includes an optical component, the optical component may constitute a part or all of the bottom portion 3b. Alternatively, the bottom portion 3b may be formed with a through hole in the thickness direction, and an optical component such as a lens may be disposed so as to close the through hole.

The outer peripheral surface 3d of the second component 3 constitutes a holding portion 3A that can be held by a holding jig 10 (see FIG. 3) described later. 3 A of holding parts may be formed in the whole outer peripheral surface 3d in the axial direction, and may be formed only in a part of axial direction. In the present embodiment, as an example, the holding portion 3A is formed at an end portion of the outer peripheral surface 3d near the bottom portion 3b.
The holding part 3A may be a metal or a resin as long as it has rigidity enough to prevent deformation by holding the holding jig 10. However, optical surfaces (for example, a lens surface, a mirror surface, an element surface, etc.) in the optical component are not formed on the holding portion 3A.
3 A of holding parts may be formed in the perimeter of the outer peripheral surface 3d. However, the holding portion 3A may be formed so as to be separated in the circumferential direction as long as it can be held in a radial direction by a holding jig 10 described later.

On the inner peripheral surface 3c of the cylindrical portion 3a, a second adhesive surface 3C is formed at the end opposite to the bottom portion 3b in the axial direction to which a thermosetting adhesive curing portion 5 described later is in close contact.
As will be described later, the second bonding surface 3C is formed at a portion that can be opposed to the second bonding surface 2C of the first component 2 when the first component 2 is inserted into the inner peripheral surface 3c and the position thereof is adjusted. The
The second adhesive surface 3C may be a smooth surface or a rough surface as long as the required adhesive strength is obtained. Further, the second bonding surface 3C may be an uneven surface. The material of the second bonding surface 3C may be, for example, a metal or a resin. However, if the second adhesive surface 3C is made of a metal, the thermal conductivity is improved, so that the thermosetting can be promoted.
The second adhesive surface 3C may be formed continuously in the circumferential direction, or may be formed separated in the circumferential direction. Below, the example currently formed over the perimeter of the internal peripheral surface 3c is demonstrated as an example.

A first adhesive surface 3B is formed on the distal end surface 3e of the cylindrical portion 3a and an inner peripheral surface 3c in the vicinity of the distal end surface 3e to which an ultraviolet curable adhesive curing portion 4 described later is in close contact.
As will be described later, the first adhesive surface 3B is formed at a portion that can be opposed to the first adhesive surface 2B of the first component 2 when the first component 2 is inserted into the inner peripheral surface 3c for position adjustment. The
The first bonding surface 3B may be a smooth surface or a rough surface as long as the required bonding strength is obtained. Further, the first bonding surface 3B may be an uneven surface. The material of the first bonding surface 3B may be a metal or a resin, for example.
The 1st adhesion surface 3B may be formed continuously in the circumferential direction, and may be formed spaced apart in the circumferential direction. Below, the example formed over the perimeter of the front end surface 3e and the inner peripheral surface 3c will be described as an example.
In the present embodiment, the example in which the cylindrical portion 3a of the second component 3 is substantially cylindrical has been described. However, the cylindrical part 3a of the second component 3 is not limited to a substantially cylindrical shape. For example, the cylindrical portion 3a of the second component 3 may be a rectangular tube shape.

As shown in FIGS. 1A, 1 </ b> B, and 1 </ b> C, the ultraviolet curable adhesive curing portion 4 is inserted into the second component 3 and the cylindrical portion 3 a of the second component 3. It is formed by curing an ultraviolet curing adhesive filled between the component 2.
In the present embodiment, the ultraviolet curable adhesive curing part 4 is formed by curing the ultraviolet curable adhesive filled between the first adhesive surface 2B and the first adhesive surface 3B. Therefore, the region between the first adhesive surface 2B and the first adhesive surface 3B constitutes a first region between the first assembly component and the second assembly component.
The ultraviolet curable adhesive curing part 4 may be formed over the entire circumference between the first adhesive surface 2B and the first adhesive surface 3B, or may be formed at a plurality of locations separated in the circumferential direction. In the present embodiment, an example in which the entire circumference is formed will be described as an example (see FIG. 1B).

  The kind of the ultraviolet curing adhesive that forms the ultraviolet curing adhesive cured portion 4 is not particularly limited. Examples of the ultraviolet curable adhesive that forms the ultraviolet curable adhesive cured portion 4 include an acrylic ultraviolet curable adhesive.

The thermosetting adhesive curing portion 5 is formed by curing the thermosetting adhesive filled between the second component 3 and the first component 2 inserted into the cylindrical portion 3a of the second component 3. It is formed.
In this embodiment, the thermosetting adhesive curing part 5 is formed by curing a thermosetting adhesive filled between the second adhesive surface 2C and the second adhesive surface 3C. For this reason, the area between the second adhesive surface 2C and the second adhesive surface 3C constitutes a second area between the first assembly component and the second assembly component.
The thermosetting adhesive curing part 5 may be formed over the entire circumference between the second adhesive surface 2C and the second adhesive surface 3C, or may be formed at a plurality of locations separated in the circumferential direction. In the present embodiment, an example in which the entire circumference is formed will be described as an example (see FIG. 1C).

  The kind of thermosetting adhesive which forms the thermosetting adhesive curing part 5 is not particularly limited. As an example of the thermosetting adhesive which forms the thermosetting adhesive hardening part 5, an epoxy-type thermosetting adhesive can be mentioned, for example.

Next, a method for manufacturing the optical assembly 1 will be described focusing on the method for bonding and fixing the optical assembly according to the present embodiment.
FIG. 2 is a flowchart showing a flow of the adhesive fixing method of the optical assembly according to the first embodiment of the present invention. FIG. 3 is a process explanatory diagram when curing an ultraviolet curable adhesive in the method for bonding and fixing an optical assembly according to the first embodiment of the present invention. FIG. 4 is a process explanatory diagram when a thermosetting adhesive is cured in the method for bonding and fixing an optical assembly according to the first embodiment of the present invention.

  In order to manufacture the optical assembly 1, after manufacturing the first component 2 and the second component 3, steps S1 to S5 shown in FIG. 2 are performed according to the flow of FIG.

In step S1, as shown in FIG. 3, the ultraviolet curable adhesive 4L and the thermosetting adhesive are bonded between the first part 2 and the second part 3 which are a plurality of assembly components and parts to be fixed to each other. Assemble with 5 L of agent.
This step can be executed as follows, for example.
First, the holding part 2 </ b> A of the first component 2 is held by the holding jig 9, and the holding part 3 </ b> A of the second part 3 is held by the holding jig 10.
The configuration of the holding jigs 9 and 10 is not particularly limited as long as the holding portions 2A and 3A of the first component 2 and the second component 3 can be held, respectively. For example, the holding jigs 9 and 10 may employ a mechanical chuck mechanism or a vacuum suction mechanism.

Next, the holding jigs 9 and 10 are relatively moved, and the first part 2 is inserted inside the cylindrical part 3 a of the second part 3 held by the holding jig 10. The second adhesive surface 2C of the first component 2 is inserted to a position facing the second adhesive surface 3C of the second component 3. At this time, the first bonding surface 2B of the first component 2 is positioned in the vicinity of the tip surface 3e of the second component 3, and the first bonding surface 3B is positioned on the radially outer side of the first bonding surface 2B.
Next, for example, a thermosetting adhesive 5L is filled between the second adhesive surfaces 2C and 3C using a syringe (not shown).
Next, for example, an ultraviolet curable adhesive 4L is filled between the first adhesive surfaces 2B and 3B using a syringe (not shown).
Thus, step S1 is completed.

However, the above is an example of the operation of step S1, and an operation different from this may be performed.
For example, the first component 2 may be inserted into the second component 3 after applying the thermosetting adhesive 5L to at least one of the second adhesive surface 2C and the second adhesive surface 3C. In this case, the ultraviolet curable adhesive 4L may be applied to at least one of the first adhesive surfaces 2B and 3B before the first component 2 is inserted.
Furthermore, it is not essential to use the holding jigs 9 and 10 when performing this step. Without using the holding jigs 9 and 10, the first part 2 is inserted into the second part 3, and the ultraviolet curable adhesive 4L and the thermosetting adhesive 5L are applied, and this assembly is used in the next step S2. In this case, the holding jigs 9 and 10 may be used.

Next, step S2 is performed. In this step, the first component 2 and the second component 3 are held so as to be relatively movable while the ultraviolet curable adhesive 4L and the thermosetting adhesive 5L are uncured, and the first component 2 and the second component 3 are held. Adjust the relative position of.
Since the first part 2 is in a state of being fitted with a gap in the cylindrical part 3a of the second part 3, it can be relatively moved within the gap.
In this embodiment, since the first component 2 and the second component 3 are held by the holding jigs 9 and 10 in step S1, the relative position between the first component 2 and the second component 3 is immediately adjusted. Can start.

As the adjustment of the relative position, an appropriate position and posture can be adjusted according to the degree of freedom of movement of the holding jigs 9 and 10.
For example, if the relative freedom of movement of the holding jigs 9 and 10 is 6 degrees of freedom, the adjustment of the position of the first part 2 in the axial direction, the radial direction, and the circumferential direction with respect to the second part 3 and the second It is possible to adjust the tilt posture by tilting in the direction intersecting the central axis of the component 3.
The relative position may be adjusted only by adjustment necessary for the optical assembly 1.

In the adjustment of the relative position, the measuring means for measuring the reference adjustment amount is not particularly limited. For example, the relative positional deviation amount between the first component 2 and the second component 3 may be measured by an appropriate position sensor, length measuring means, or the like. Further, when at least one of the first component 2 and the second component 3 includes a lens, the inspection light is incident on the lens, the transmitted light of the inspection light and the reflected light are optically measured, and the optical measurement value is the target. The position may be adjusted to reach the value.
Examples of the optical measurement include light quantity measurement, aberration measurement, focal position measurement, and field angle measurement.

  When the relative position adjustment of the first component 2 and the second component 3 is completed, step S2 is completed.

Next, step S3 is performed. In this step, the ultraviolet curable adhesive 4L is cured with the first component 2 and the second component 3 held in the adjusted positions.
Specifically, when step S2 is completed, as shown in FIG. 3, the UV curable adhesive 4L is cured by irradiating the portion to which the UV curable adhesive 4L is applied with UV light L.
When the ultraviolet curable adhesive 4L is cured by the UV light L, the ultraviolet curable adhesive cured portion 4 is formed.
This is the end of step S3.

Next, step S4 is performed. In this step, one of the first component 2 and the second component 3 is held, and the other is released.
In the present embodiment, the holding part 3A is formed on the outer peripheral part of the cylindrical part 3a of the second part 3, and the holding part 2A of the first part 2 protrudes outward from the cylindrical part 3a of the second part 3. It is formed on the outer peripheral surface 2a. For this reason, the holding portions 2A and 3A are holding portions formed at portions that can be held and released independently. That is, holding one of the holding portions 2A and 3A does not prevent the other holding release.
Therefore, it is possible to release and hold the other of the first component 2 and the second component 3 while holding one.
Either of the first component 2 and the second component 3 may be released, but may be determined as appropriate in consideration of easiness of heating in step S5 to be described later.
In the present embodiment, as shown in FIG. 4, as an example, holding of the holding portion 2 </ b> A by the holding jig 9 is released.
Above, step S4 is complete | finished.

Next, step S5 is performed. In this step, the thermosetting adhesive 5L is cured with one of the first component 2 and the second component 3 held.
Specifically, after step S4 is completed, as shown in FIG. 4, the portion to which the thermosetting adhesive 5L has been applied is heated to cure the thermosetting adhesive 5L.
The heating means is not particularly limited.
For example, warm air may be blown from the radially outer side to the cylindrical portion 3a to locally heat the back side of the second bonding surface 3C.
For example, the first component 2 and the second component 3 may be heated as a whole by being carried into a heating tank while the second component 3 is held by the holding jig 10.
When the thermosetting adhesive 5L is thermally cured by heating, the thermosetting adhesive curing portion 5 is formed.
The step S5 is thus completed, and the first component 2 and the second component 3 are bonded and fixed by the ultraviolet curable adhesive curing unit 4 and the thermosetting adhesive curing unit 5.
In this way, the method for bonding and fixing the optical assembly of this embodiment is completed.
When the holding jig 10 is released, the optical assembly 1 shown in FIG. 1A is manufactured.

According to the adhesive fixing method of the optical assembly of the present embodiment, when the ultraviolet curable adhesive 4L is cured, the first component 2 and the second component 3 are held by the holding jigs 9 and 10, respectively. UV light L is irradiated, and the ultraviolet curable resin adhesive 4L is cured.
For this reason, even if the ultraviolet curable adhesive 4L is cured and contracted while the ultraviolet curable adhesive 4L is cured and the ultraviolet curable adhesive cured portion 4 is formed, the relative relationship between the first component 2 and the second component 3 is relatively large. The position does not change when the position adjustment is completed because the holding position by the holding jigs 9 and 10 does not change.
In the present embodiment, after the ultraviolet curable resin curing portion 4 is formed and the relative positions of the first component 2 and the second component 3 are fixed to the adjusted position, the thermosetting adhesive 5L is cured to cure the thermosetting resin. A cured portion 5 is formed.

When the first component 2 and the second component 3 are heated by the holding jigs 9 and 10 to cure the thermosetting adhesive 5L, the system including the holding jigs 9 and 10 is heated. Inflate. Since the first component 2, the second component 3, and the holding jigs 9 and 10 have different coefficients of thermal expansion, when they are heated, anisotropic thermal expansion occurs as a whole.
The first component 2 and the second component 3 are deformed by receiving a relative external force from the holding jigs 9 and 10, and the thermosetting adhesive curing portion 5 is formed in a state shifted from the relative position at the end of the adjustment. The
For this reason, the 1st component 2 and the 2nd component 3 are fixed by the thermosetting adhesive hardening part 5 in the positional relationship different from the time of completion | finish of adjustment.
Therefore, even if the holding jigs 9 and 10 are released after the heating is stopped, the relative positions of the first component 2 and the second component 3 may be shifted from the positions at the end of the adjustment. The second part 3 is distorted.

On the other hand, in the present embodiment, in order to release the holding jig 9 when heating, of the first component 2 and the second component 3 bonded by the ultraviolet curable adhesive curing unit 4, Only the second component 3 is held by the holding jig 10.
Even if the first component 2 and the second component 3 are thermally expanded by heating, the first component 2 is not restrained by the holding jig 9, so that when heating is finished and the temperature is lowered, the state returns to the state before heating.
In particular, in the present embodiment, the ultraviolet curable adhesive 4L and the thermosetting adhesive 5L are applied close to positions adjacent in the axial direction. For this reason, even if the thermal expansion coefficient of the cylindrical part 3a and the thermal expansion coefficient of the 1st component 2 differ, the thermal expansion between the ultraviolet curing adhesive curing part 4 and the thermosetting adhesive curing part 5 The difference in quantity is very small. For this reason, the position shift by the difference in the thermal expansion coefficient of the 1st component 2 and the 2nd component 3 can also be suppressed.

Since the optical assembly 1 to which the first component 2 and the second component 3 are bonded and fixed in this way is maintained in the relative position at the time of position adjustment, they are fixed to each other with high accuracy. For this reason, the relative position of the optical component included in the optical assembly 1 is adjusted with high accuracy.
Further, the optical assembly 1 is bonded and fixed by the ultraviolet curing adhesive curing portion 4 and the thermosetting adhesive curing portion 5. Since the thermosetting adhesive curing part 5 has higher adhesive strength than the ultraviolet curing adhesive curing part 4, the optical assembly 1 is bonded with high strength.
According to the adhesive fixing method and the optical assembly of the optical assembly of this embodiment, each assembly component of the optical assembly can be fixed with high strength and high accuracy.

[Second Embodiment]
An optical assembly according to a second embodiment of the present invention will be described.
FIG. 5A is a schematic cross-sectional view showing an example of the optical assembly according to the second embodiment of the present invention. FIG.5 (b) is CC sectional drawing in Fig.5 (a). FIG. 6 is a schematic cross-sectional view showing an example of a first assembly component used in the optical assembly of the second embodiment of the present invention. FIG. 7 is a schematic cross-sectional view showing an example of a second assembly component used in the optical assembly of the second embodiment of the present invention.

As shown in FIGS. 5A and 5B, the optical assembly 11 of this embodiment is replaced with a first component 2 and a second component 3 of the optical assembly 1 in the first embodiment. One part 12 (an assembly constituent part, a first assembly constituent part) and a second part 13 (an assembly constituent part, a second assembly constituent part) are provided. The first component 12 and the second component 13 are different from each other only in the bonding position, and are bonded and fixed to each other by the ultraviolet curing adhesive curing unit 4 and the thermosetting adhesive curing unit 5 as in the first embodiment. Yes.
Hereinafter, a description will be given centering on differences from the first embodiment.

As shown in FIG. 6, the first component 12 includes a first lens 15 (optical component) and a first lens frame 14.
The 1st lens 15 is a lens which comprises the optical system which exhibits suitable optical performance with the 2nd lens 17 of the 2nd part 13 mentioned below.
As the lens configuration of the first lens 15, an appropriate lens configuration for realizing the optical performance necessary for the optical apparatus using the optical assembly 11 can be adopted.
For example, FIG. 6 illustrates an example in which the first lens 15 is a single lens, but the first lens 15 may be configured by a lens group including a plurality of lenses.
Although FIG. 6 illustrates a biconvex lens as the first lens 15, this is an example, and the first lens 15 is not limited to a positive lens. For example, when the first lens 15 is a single lens, the first lens 15 may be a convex lens such as a plano-convex lens or a positive meniscus lens, or various concave lenses. For example, when the first lens 15 includes a lens group, an appropriate type of lens may be combined as necessary.

  The material of the first lens 15 is not particularly limited. For example, the first lens 15 may be a glass lens or a resin lens.

The first lens frame 14 is a frame member that is formed in a cylindrical shape as a whole and that holds the first lens 15 coaxially on the central axis O14.
The first lens frame 14 includes a disk portion 14a, a first cylindrical portion 14b, and a second cylindrical portion 14c.

A through hole 14e having an inner diameter smaller than the outer diameter of the first lens 15 passes through the center of the disc portion 14a.
The first cylindrical portion 14b is a cylindrical portion that extends coaxially with the central axis O14 from one surface of the disc portion 14a. The inner diameter of the first cylindrical portion 14 b is larger than the outer diameter of the first lens 15.
Inside the first tubular portion 14b, the disc portion 14a extended to the through hole 14e constitutes a lens receiving portion 14f that receives the first lens 15.
On the outer peripheral surface on the distal end side in the protruding direction of the first cylindrical portion 14b, a second adhesive surface 14C to which the thermosetting adhesive curing portion 5 similar to that in the first embodiment is adhered is formed.
The configuration of the second adhesive surface 14C is the same as the second adhesive surface 2C in the first embodiment.

The second cylindrical portion 14c is a cylindrical portion that protrudes from the outer peripheral portion of the disc portion 14a in the same direction as the first cylindrical portion 14b and extends coaxially with the central axis O14.
The protruding height of the second cylindrical portion 14c from the disc portion 14a is lower than the protruding height of the first cylindrical portion 14b from the disc portion 14a.
The same ultraviolet curable adhesive curing portion 4 as in the first embodiment is in close contact with the inner peripheral surface on the distal end side in the projecting direction of the second cylindrical portion 14c and the distal end surface 14d in the projecting direction. An adhesive surface 14B is formed.
The configuration of the first adhesive surface 14B is the same as that of the first adhesive surface 2B in the first embodiment.
The first adhesive surface 14B is located on the radially outer side of the second adhesive surface 14C.

A gap is formed in the radial direction between the first cylindrical portion 14b and the second cylindrical portion 14c, and a cylindrical portion 16a of the second lens frame 16 described later is inserted with a gap in the radial direction. Is possible.
A holding portion 14A similar to the holding portion 2A in the first component 2 of the first embodiment is formed on the outer peripheral surface of the second cylindrical portion 14c.

The material of the first lens frame 14 is not particularly limited as long as it can be bonded by the same ultraviolet curable adhesive 4L and thermosetting adhesive 5L as in the first embodiment. For example, the material of the first lens frame 14 may be metal or resin.
However, the material of the first lens frame 14 is more preferably a metal. When the material of the first lens frame 14 is a metal, the thermal conductivity is improved, so that the heating time or the amount of heat necessary for thermosetting the thermosetting adhesive 5L can be reduced.

In the first component 12, the first lens 15 is inserted into the first cylindrical portion 14 b of the first lens frame 14.
The first lens 15 is bonded and fixed to the inside of the first cylindrical portion 14b through the adhesive curing portion 12a in a state where the first lens 15 is positioned by the lens receiving portion 14f of the first lens frame 14.
The adhesive curing portion 12a may be formed over the entire circumference between the outer peripheral portion of the first lens 15 and the lens receiving portion 14f, or may be formed at a plurality of locations separated in the circumferential direction.
The material of the adhesive curing part 12a is not particularly limited. The adhesive curing part 12a can be formed, for example, by curing an adhesive such as an ultraviolet curing adhesive or a thermosetting adhesive.

As shown in FIG. 7, the second component 13 includes a second lens 17 (optical component) and a second lens frame 16.
The second lens 17 is a lens constituting an optical system that exhibits appropriate optical performance together with the first lens 15 of the first component 12.
As the lens configuration of the second lens 17, an appropriate lens configuration for realizing the optical performance necessary for the optical apparatus using the optical assembly 11 can be adopted.
For example, FIG. 7 illustrates an example of a single lens, but the second lens 17 may be formed of a lens group including a plurality of lenses.
The schematic illustration in FIG. 7 is an example, and the second lens 17 can employ various lens configurations as necessary, like the first lens 15.

  The material of the second lens 17 is not particularly limited. For example, the second lens 17 may be a glass lens or a resin lens.

The second lens frame 16 is a frame member that is formed in a cylindrical shape as a whole and holds the second lens 17 coaxially on the central axis O16.
The second lens frame 16 includes a cylindrical portion 16a, a flange portion 16b, and a lens receiving portion 16f.

The cylindrical portion 16 a is a cylindrical portion that houses the second lens 17, and has a shape that can be inserted between the first cylindrical portion 14 b and the second cylindrical portion 14 c in the first lens frame 14.
The inner diameter of the cylindrical portion 16 a is larger than the outer diameter of the second lens 17 and the outer diameter of the first cylindrical portion 14 b of the first lens frame 14.
The outer diameter of the cylindrical portion 16 a is smaller than the inner diameter of the second cylindrical portion 14 c of the first lens frame 14.
The dimensional difference between the inner diameter of the cylindrical portion 16a and the outer diameter of the first cylindrical portion 14b of the first lens frame 14, and the outer diameter of the cylindrical portion 16a and the inner diameter of the second cylindrical portion 14c of the first lens frame 14 Is larger than the radial position adjustment amount between the first component 12 and the second component 13.

The flange portion 16b protrudes from the outer peripheral surface 16d at one end of the cylindrical portion 16a to the outer side in the radial direction over the entire circumference. In the present embodiment, the outer diameter of the flange portion 16 b is equal to the outer diameter of the second cylindrical portion 14 c of the first lens frame 14.
Between the outer peripheral surface 16d and the flange part 16b, the step part 16c which consists of a plane orthogonal to the central axis O16 of the cylindrical part 16a is formed.
A holding portion 16A similar to the holding portion 3A of the second component 3 in the first embodiment is formed on the outer peripheral surface of the flange portion 16b.
The lens receiving portion 16f is a plate-like portion that extends radially inward in the tubular portion 16a. In the present embodiment, the lens receiving portion 16f is formed at a position near the flange portion 16b in the axial direction of the tubular portion 16a.
A through hole 16e having an inner diameter smaller than the outer diameter of the second lens 17 passes through the central portion of the lens receiving portion 16f so as to be coaxial with the central axis O16.

On the inner peripheral surface on the distal end side in the protruding direction of the cylindrical portion 16a, a second adhesive surface 16C to which the thermosetting adhesive curing portion 5 similar to that in the first embodiment is adhered is formed.
The configuration of the second adhesive surface 16C is the same as that of the second adhesive surface 3C in the first embodiment.
However, as shown in FIG. 5A, the second adhesive surface 16C has a cylindrical portion 16a between the first cylindrical portion 14b and the second cylindrical portion 14c of the first lens frame 14 as will be described later. When the position of the first component 12 is adjusted by inserting the first lens frame 14, the first lens frame 14 is formed at a portion that can face the second adhesive surface 14 </ b> C.

As shown in FIG. 7, the ultraviolet curable adhesive curing part 4 similar to that in the first embodiment is in close contact with the outer peripheral surface on the base end side in the protruding direction of the cylindrical part 16a and the step part 16c. A first adhesive surface 16B is formed.
The configuration of the first adhesive surface 16B is the same as that of the first adhesive surface 3B in the first embodiment.
The first adhesive surface 16B is located on the radially outer side of the second adhesive surface 16C. The position of the first adhesive surface 16B in the axial direction is not particularly limited, but in the present embodiment, as an example, the position is overlapped with the formation range of the second adhesive surface 16C.

The material of the second lens frame 16 is not particularly limited as long as it can be bonded by the same ultraviolet curable adhesive 4L and thermosetting adhesive 5L as in the first embodiment. For example, the material of the second lens frame 16 may be metal or resin.
However, the material of the second lens frame 16 is more preferably a metal. When the material of the second lens frame 16 is a metal, the thermal conductivity is improved, so that the heating time or the amount of heat necessary for thermosetting the thermosetting adhesive 5L can be reduced.
Furthermore, the material of the second lens frame 16 may be a material close to the coefficient of thermal expansion of the first lens frame 14. Further, as the material of the second lens frame 16, a material whose thermal expansion coefficient is the same as that of the first lens frame 14 may be used.

In the second component 13, the second lens 17 is inserted into the cylindrical portion 16 a of the second lens frame 16.
The second lens 17 is bonded and fixed to the inside of the cylindrical portion 16a through the adhesive curing portion 13a in a state where the second lens 17 is positioned by the lens receiving portion 16f of the second lens frame 16.
The adhesive curing portion 13a may be formed over the entire circumference between the outer peripheral portion of the second lens 17 and the lens receiving portion 16f, or may be formed at a plurality of locations separated in the circumferential direction.
The material of the adhesive curing part 13a is not particularly limited. The adhesive curing portion 13a can be formed by curing an adhesive such as an ultraviolet curing adhesive or a thermosetting adhesive.

As shown in FIGS. 5A and 5B, the ultraviolet curable adhesive curing portion 4 in the present embodiment includes the first component 12, the first cylindrical portion 14 b and the second cylindrical portion in the first component 12. It is formed by curing the ultraviolet curable adhesive filled between the second part 13 in which the cylindrical part 16a is inserted between the part 14c and the part 14c.
In the present embodiment, the ultraviolet curable adhesive curing part 4 is formed by curing the ultraviolet curable adhesive filled between the first adhesive surface 14B and the first adhesive surface 16B. Therefore, the region between the first adhesive surface 14B and the first adhesive surface 16B constitutes a first region between the first assembly component and the second assembly component.
The ultraviolet curing adhesive curing part 4 may be formed over the entire circumference between the first adhesive surface 14B and the first adhesive surface 16B, or may be formed at a plurality of locations separated in the circumferential direction. In the present embodiment, an example in which the entire circumference is formed will be described as an example (see FIG. 5B).

In the present embodiment, the thermosetting adhesive curing part 5 includes a first part 12 and a cylindrical part 16a inserted between the first cylindrical part 14b and the second cylindrical part 14c of the first part 12. It is formed by curing a thermosetting adhesive filled between the two parts 13.
In the present embodiment, the thermosetting adhesive curing portion 5 is formed by curing a thermosetting adhesive filled between the second adhesive surface 14C and the second adhesive surface 16C. Therefore, the region between the second adhesive surface 14C and the second adhesive surface 16C constitutes a second region between the first assembly component and the second assembly component.
The thermosetting adhesive curing part 5 may be formed over the entire circumference between the second adhesive surface 14C and the second adhesive surface 16C, or may be formed at a plurality of locations separated in the circumferential direction. In the present embodiment, an example in which the entire circumference is formed will be described as an example (see FIG. 5B).

Next, a method for manufacturing the optical assembly 11 will be described focusing on the method for bonding and fixing the optical assembly according to the present embodiment.
FIG. 8 is an explanatory diagram of the process when curing the ultraviolet curable adhesive in the optical assembly adhesive fixing method according to the second embodiment of the present invention. FIG. 9 is a process explanatory diagram when a thermosetting adhesive is cured in the method for bonding and fixing an optical assembly according to the second embodiment of the present invention.

The optical assembly 11 is the optical assembly according to the first embodiment in which the flow of the first component 12 and the second component 13 is shown in FIG. 2 after the first component 12 and the second component 13 are manufactured. It is manufactured by adhering and fixing by the adhesive fixing method.
Hereinafter, a description will be given centering on differences from the first embodiment.

In step S1 in the present embodiment, the parts to be fixed to each other are the first part 12 and the second part 13, and there is a portion where the ultraviolet curable adhesive 4L and the thermosetting adhesive 5L are interposed correspondingly. The different point is different from step S1 in the first embodiment.
This step can be executed as follows, for example.
First, the holding part 14 </ b> A of the first component 12 is held by the holding jig 9, and the holding part 16 </ b> A of the second component 13 is held by the holding jig 10.
Next, for example, the ultraviolet curable adhesive 4L is applied to the first adhesive surface 16B, and the thermosetting adhesive 5L is applied to the second adhesive surface 14C.
Next, as shown in FIG. 8, the holding jigs 9 and 10 are relatively moved, and the first cylindrical portion 14 b and the second cylindrical portion 14 c of the first component 12 held by the holding jig 9 are moved. The cylindrical part 16a of the second component 13 is inserted between them.
When the first component 12 is inserted to a position where the second bonding surface 14C faces the second bonding surface 16C of the second component 13, the relative movement of the holding jigs 9 and 10 is stopped. At this time, the front end surface 14 d of the first component 12 contacts the thermosetting adhesive 5 </ b> L applied to the first adhesive surface 16 </ b> B of the second component 13.
As a result, the thermosetting adhesive 5L is filled between the second adhesive surface 14C and the second adhesive surface 16C. The ultraviolet curable adhesive 4L is filled between the first adhesive surface 14B and the first adhesive surface 16B.
Above, step S1 in this embodiment is complete | finished.

However, the above operation is an example of the operation in step S1 in the present embodiment. In step S1 in the present embodiment, an operation different from the above coating may be performed.
For example, the thermosetting adhesive 5L may be applied to the second adhesive surface 16C instead of the second adhesive surface 14C.
For example, after the cylindrical part 16a of the second part 13 is inserted between the first cylindrical part 14b and the second cylindrical part 14c of the first part 12 held by the holding jig 9, UV curing is performed. The adhesive 4L and the thermosetting adhesive 5L may be filled. In order to fill the thermosetting adhesive 5L, for example, an adhesive introduction hole (not shown) is provided at an appropriate position of the first lens frame 14 or the second lens frame 16, and the adhesive introduction hole is used using a syringe or the like. The thermosetting adhesive 5L may be filled through.

After step S1, step S2 in this embodiment is performed. In this step, the relative positions of the first component 12 and the second component 13 are adjusted in the same manner as in step S2 in the first embodiment.
Since the cylindrical part 16a of the second part 13 is in a state of being fitted with a gap between the first cylindrical part 14b and the second cylindrical part 14c in the first part 12, it is relatively within the range of the gap. It is movable.
The adjustment in this step can be performed in the same manner as in the first embodiment. In particular, in the present embodiment, since the first component 12 and the second component 13 include the first lens 15 and the second lens frame 16, respectively, examples such as optical axis adjustment, eccentricity adjustment, and lens interval adjustment are given. Can do.

After step S2, step S3 in this embodiment is performed. In this step, as shown in FIG. 8, the ultraviolet curable adhesive 4L is held in the same manner as in step S3 in the first embodiment with the first component 12 and the second component 13 held in the adjusted positions. Is cured.
When the ultraviolet curable adhesive 4L is cured by the UV light L, the ultraviolet curable adhesive cured portion 4 is formed.
As a result, the first component 12 and the second component 13 are fixed to each other.

After step S3, step S4 in this embodiment is performed. In this step, one of the first component 12 and the second component 13 is held, and the other is released.
In the present embodiment, the holding portions 14 </ b> A and 16 </ b> A are formed on the outer peripheral portions of the first component 12 and the second component 13 that are the outermost surfaces of the optical assembly 11, respectively. For this reason, the holding portions 14A and 16A are holding portions formed at portions that can be held and released independently. That is, holding one of the holding portions 14A and 16A does not prevent the other holding release.
Therefore, it is possible to release the other of the first component 12 and the second component 13 while holding the other.
In the present embodiment, as shown in FIG. 9, as an example, the holding of the holding portion 14 </ b> A by the holding jig 9 is released.

After step S4, step S5 in this embodiment is performed. In this step, the thermosetting adhesive 5L is cured in the same manner as in step S4 in the first embodiment with one of the first component 12 and the second component 13 held.
For example, as shown in FIG. 9, hot air is blown to the first component 12 and the second component 13 from the outside in the radial direction corresponding to the portion where the thermosetting adhesive 5L is applied, and the thermosetting adhesive 5L is filled. The vicinity of the formed part may be locally heated.
Alternatively, the first component 2 and the second component 3 may be heated as a whole by bringing them into the heating tank while holding the second component 13 by the holding jig 10.
When the thermosetting adhesive 5L is thermally cured by heating, the thermosetting adhesive curing portion 5 is formed.
Thus, step S5 is completed, and the first component 12 and the second component 13 are bonded and fixed by the ultraviolet curing adhesive curing unit 4 and the thermosetting adhesive curing unit 5.
In this way, the method for bonding and fixing the optical assembly according to this embodiment is completed.
When the holding jig 10 is released, the optical assembly 11 shown in FIG. 5A is manufactured.

The optical assembly adhesive fixing method of the present embodiment is different from the above in the first embodiment except that the shape of the member to be adhesively fixed is different, and the region filled with the ultraviolet curable adhesive 4L and the thermosetting adhesive 5L is different accordingly. This is the same as the method for bonding and fixing the optical assembly of one embodiment.
For this reason, similarly to the first embodiment, the first component 12 and the second component 13 which are the assembly components of the optical assembly 11 can be fixed with high strength and high accuracy.

In particular, according to the optical assembly 11 of the present embodiment, the thermosetting adhesive 5L is thermally cured in a state where the thermosetting adhesive 5L is filled in a range overlapping in the axial direction on the radially inner side with respect to the ultraviolet curable adhesive curing portion 4. The For this reason, even if the first lens frame 14 and the second lens frame 16 thermally expand in the axial direction due to heating, the UV curable adhesive curing portion 4 and the thermosetting adhesive 5L on the back side thereof are substantially the same in the axial direction. Position. Accordingly, misalignment due to thermal expansion in the axial direction is unlikely to occur.
On the other hand, in the radial direction, since the first lens frame 14 and the second lens frame 16 are each cylindrical and are arranged coaxially, the relative positional shift due to the respective thermal expansion becomes small. In particular, if the first lens frame 14 and the second lens frame 16 have substantially the same coefficient of thermal expansion, the thermal expansion is also approximately isotropic.

[Third Embodiment]
An optical assembly according to a third embodiment of the present invention will be described.
FIG. 10 is a schematic cross-sectional view showing an example of an optical assembly according to the third embodiment of the present invention.

As shown in FIG. 10, the optical assembly 21 of the present embodiment is replaced with a first component 22 (an assembly component, a first component) instead of the first component 12 of the optical assembly 11 of the second embodiment. Assembly component) and a third component 23 (assembly component, second assembly component) is added.
The first component 22 and the second component 13 are bonded and fixed to each other by the ultraviolet curable adhesive curing portion 4A and the thermosetting adhesive curing portion 5A in the same manner as in the second embodiment.
The third component 23 is bonded and fixed to each other by the ultraviolet curable adhesive curing portion 4B and the thermosetting adhesive curing portion 5B in the same manner as in the second embodiment.
The ultraviolet curable adhesive curing portions 4A and 4B are formed by curing the same ultraviolet curable adhesive 4L in the second embodiment.
The thermosetting adhesive curing portions 5A and 5B are formed by curing the same thermosetting adhesive 5L as in the second embodiment.
Hereinafter, a description will be given focusing on differences from the second embodiment.

The first component 22 includes a first lens frame 24 instead of the first lens frame 14 of the first component 12 in the second embodiment.
The first lens frame 24 is configured by adding a third cylindrical portion 24 b and a fourth cylindrical portion 24 c to the first lens frame 14.

The third cylindrical portion 24b is a cylindrical portion that extends coaxially with the central axis O14 from the surface of the disc portion 14a opposite to the side where the first cylindrical portion 14b is formed. The inner diameter of the third cylindrical portion 24b is larger than the inner diameter of the through hole 14e and smaller than the outer diameter of the third lens 27 described later.
A fourth adhesive surface 24C to which the thermosetting adhesive curing portion 5B is in close contact is formed on the outer peripheral surface on the distal end side in the protruding direction of the third cylindrical portion 24b.
The configuration of the fourth adhesive surface 24C is the same as that of the second adhesive surface 14C.

The fourth cylindrical portion 24c protrudes in the same direction as the third cylindrical portion 24b from the disk portion 14a radially outside the third cylindrical portion 24b, and is a cylinder extended coaxially with the central axis O14. It is a shaped part.
The outer diameter of the fourth cylindrical portion 24c may be different from that of the second cylindrical portion 14c, but is equal to the outer diameter of the second cylindrical portion 14c in the example shown in FIG.
A holding part 24A similar to the holding part 14A of the first component 12 in the second embodiment is formed on the outer peripheral surfaces of the second cylindrical part 14c and the fourth cylindrical part 24c.

The protruding height of the fourth cylindrical portion 24c from the disc portion 14a is lower than the protruding height of the third cylindrical portion 24b from the disc portion 14a.
A third adhesive surface 24B to which the ultraviolet curable adhesive curing portion 4B is in close contact is formed on the inner peripheral surface on the distal end side in the projecting direction of the fourth cylindrical portion 24c and the distal end surface 24d in the projecting direction.
The configuration of the third adhesive surface 24B is the same as that of the first adhesive surface 14B.
The third adhesive surface 24B is located on the radially outer side of the fourth adhesive surface 24C in the fourth tubular portion 24c.

A gap is formed in the radial direction between the third cylindrical portion 24b and the fourth cylindrical portion 24c, and a cylindrical portion 26a of the third lens frame 26 described later is inserted with a gap in the radial direction. Is possible.
The material of the first lens frame 24 is the same as that of the first lens frame 14 in the second embodiment.

The third component 23 includes a third lens 27 (optical component) and a third lens frame 26.
The third lens 27 is a lens that constitutes an optical system that exhibits appropriate optical performance together with the first lens 15 of the first component 12 and the second lens 17 of the second component 13.
As the lens configuration of the third lens 27, an appropriate lens or lens group for realizing the optical performance necessary for the optical apparatus using the optical assembly 21 can be adopted. The schematic illustration in FIG. 10 is an example, and the third lens 27 can employ various lens configurations and lens materials as necessary, similarly to the first lens 15 and the second lens 17.

The third lens frame 26 is a frame member that is formed in a cylindrical shape as a whole and that holds the third lens 27 coaxially on the central axis O24.
The third lens frame 26 corresponds to the cylindrical portion 16a, the flange portion 16b, and the lens receiving portion 16f of the second lens frame 16, respectively, and the cylindrical portion 26a, the flange portion 26b, and the lens receiving portion. 26f.
The material of the third lens frame 26 may be different from that of the second lens frame 16, but in the present embodiment, it is the same material as that of the second lens frame 16 as an example.

The cylindrical portion 26 a is a cylindrical portion that houses the third lens 27, and has a shape that can be inserted between the third cylindrical portion 24 b and the fourth cylindrical portion 24 c in the first lens frame 24.
The inner diameter of the cylindrical portion 26 a is larger than the outer diameter of the third lens 27 and the outer diameter of the third cylindrical portion 24 b of the first lens frame 24.
The outer diameter of the cylindrical portion 26 a is smaller than the inner diameter of the fourth cylindrical portion 24 c of the first lens frame 24.
The dimensional difference between the inner diameter of the cylindrical portion 26a and the outer diameter of the third cylindrical portion 24b of the first lens frame 24, and the outer diameter of the cylindrical portion 26a and the inner diameter of the fourth cylindrical portion 24c of the first lens frame 24. Is larger than the positional adjustment amount in the radial direction between the first component 22 and the third component 23.

The flange part 26b protrudes from the outer peripheral surface 26d in the one end part of the cylindrical part 26a to the outer side in the radial direction over the entire circumference. In the present embodiment, the outer diameter of the flange portion 26 b is equal to the outer diameter of the fourth cylindrical portion 24 c of the first lens frame 24.
Between the outer peripheral surface 26d and the flange part 26b, the step part 26c which consists of a plane orthogonal to the central axis O26 of the cylindrical part 26a is formed.
A holding portion 26A similar to the holding portion 16A of the second component 13 is formed on the outer peripheral surface of the flange portion 26b.
However, the holding portion 16A is a portion that is held by the holding jig 10, whereas the holding portion 26A is different in that it is held by a holding jig 20 described later.

The lens receiving portion 26f is a plate-like portion that extends radially inward from the inner peripheral surface of one end similar to the flange portion 26b formed in the cylindrical portion 26a.
A through hole 26e having an inner diameter smaller than the outer diameter of the third lens 27 passes through the center of the lens receiving portion 26f so as to be coaxial with the central axis O26.

A second adhesive surface 26C to which the thermosetting adhesive curing portion 5B is in close contact is formed on the inner peripheral surface on the distal end side in the protruding direction of the cylindrical portion 26a.
The configuration of the second adhesive surface 26C is the same as that of the second adhesive surface 16C.
However, the second adhesive surface 26C is inserted into the cylindrical portion 26a between the third cylindrical portion 24b and the fourth cylindrical portion 24c of the first lens frame 24, as will be described later. At the time of adjustment, the first lens frame 24 is formed at a portion that can face the fourth adhesive surface 24C.

A first adhesive surface 26B to which the ultraviolet curable adhesive curing portion 4B is in close contact is formed on the outer peripheral surface on the proximal end side in the protruding direction of the cylindrical portion 26a and the stepped portion 26c.
The configuration of the first adhesive surface 26B is the same as that of the first adhesive surface 16B.
The first adhesive surface 26B is located on the radially outer side of the second adhesive surface 26C. The position of the first adhesive surface 26B in the axial direction is not particularly limited, but in the present embodiment, as an example, the position is overlapped with the formation range of the second adhesive surface 26C.

In the third component 23, the third lens 27 is inserted into the cylindrical portion 26 a of the third lens frame 26.
The third lens 27 is bonded and fixed to the inside of the cylindrical portion 26a through the adhesive curing portion 13a similar to the example in the second component 13 in a state where the third lens 27 is positioned by the lens receiving portion 26f of the third lens frame 26. ing.

As in the second embodiment, the ultraviolet curable adhesive curing portion 4A is formed by curing the ultraviolet curable adhesive filled between the first adhesive surface 14B and the first adhesive surface 16B.
The ultraviolet curable adhesive curing part 4B includes a first part 22 and a third part 23 in which a cylindrical part 26a is inserted between the third cylindrical part 24b and the fourth cylindrical part 24c of the first part 22. It is formed by curing the UV-curing adhesive filled in between.
Similarly to the ultraviolet curable adhesive curing portion 4A, the ultraviolet curable adhesive curing portion 4B may be formed over the entire circumference, or may be formed at a plurality of locations separated in the circumferential direction.
The ultraviolet curable adhesive curing portion 4B is formed by curing the ultraviolet curable adhesive filled between the third adhesive surface 24B and the first adhesive surface 26B. Therefore, the region between the third adhesive surface 24B and the first adhesive surface 26B constitutes a first region between the first assembly component and the second assembly component.

The thermosetting adhesive curing portion 5A is formed by curing the thermosetting adhesive filled between the second adhesive surface 14C and the second adhesive surface 16C, as in the second embodiment.
The thermosetting adhesive curing part 5B includes a first part 22 and a third part 23 in which a cylindrical part 26a is inserted between the third cylindrical part 24b and the fourth cylindrical part 24c of the first part 22. It is formed by curing the thermosetting adhesive filled in between.
Similarly to the thermosetting adhesive curing portion 5A, the thermosetting adhesive curing portion 5B may be formed over the entire circumference or may be formed at a plurality of locations separated in the circumferential direction.
The thermosetting adhesive curing portion 5B is formed by curing the thermosetting adhesive filled between the fourth adhesive surface 24C and the second adhesive surface 26C. Therefore, the region between the fourth adhesive surface 24C and the second adhesive surface 26C constitutes a second region between the first assembly component and the second assembly component.

Next, a method for manufacturing the optical assembly 21 will be described focusing on the method for bonding and fixing the optical assembly according to the present embodiment.
FIG. 11 is an explanatory diagram of the process when curing the ultraviolet curable adhesive in the method of bonding and fixing an optical assembly according to the third embodiment of the present invention. FIG. 12 is an explanatory diagram of processes when a thermosetting adhesive is cured in the method of bonding and fixing an optical assembly according to the third embodiment of the present invention.

FIG. 2 shows the flow of the optical assembly 1 after the first part 22, the second part 13, and the third part 23 are manufactured, and then the first part 22, the second part 13, and the third part 23. It is manufactured by bonding and fixing by the bonding and fixing method of the optical assembly of the second embodiment.
Hereinafter, a description will be given focusing on differences from the second embodiment.

In step S1 in the present embodiment, the parts to be fixed to each other are the three parts of the first part 22, the second part 13, and the third part 23, and the UV curable adhesive 4L and the thermosetting corresponding to the three parts. The difference from the step S1 in the second embodiment is that the part where the adhesive 5L is interposed is different.
In this step, in the same manner as in the second embodiment, the ultraviolet curable adhesive 4L is applied between the first adhesive surface 14B and the first adhesive surface 16B, and the second adhesive surface 14C and the second adhesive surface 16C. The second component 13 is assembled to the first component 22 with the thermosetting adhesive 5L interposed therebetween.
In the present embodiment, the third part 23 has substantially the same configuration as the second part 13, and the third cylindrical part 24 b and the fourth cylindrical part 24 c in which the cylindrical part 26 a can be inserted into the first part 22. Is provided. For this reason, in the same manner as in the second embodiment, the ultraviolet curable adhesive 4L is provided between the third adhesive surface 24B and the first adhesive surface 26B, and the gap between the fourth adhesive surface 24C and the second adhesive surface 26C. The third component 23 can be assembled to the first component 22 with the thermosetting adhesive 5L interposed therebetween.

After step S1, step S2 in this embodiment is performed. In this step, the relative positions of the first component 22, the second component 13, and the third component 23 are adjusted in the same manner as in step S2 in the second embodiment.
Since the first component 22 and the second component 13 are in a state of being fitted with a gap therebetween as in the second embodiment, they can be relatively moved within the range of the gap.
Similarly, since the first part 22 and the third part 23 are in a state of being fitted with a gap therebetween, they can be relatively moved within the gap.
In this step, as shown in FIG. 11, the holding portion 24A of the first component 22 is held by the holding jig 9, the holding portion 16A of the second component 13 is held by the holding jig 10, and the holding portion 26A of the third component 23 is turned on. Hold with the holding jig 20.
The holding jig 20 can employ the same configuration as the holding jigs 9 and 10.
Adjustment in this step is performed by fixing one of the holding jigs 9, 10, and 20 and moving the other as necessary.

After step S2, step S3 in this embodiment is performed. In this step, as shown in FIG. 11, the first component 22, the second component 13, and the third component 23 are held in the adjusted positions in the same manner as in step S3 in the second embodiment. The UV curable adhesive 4L is cured.
When the ultraviolet curing adhesive 4L is cured by the UV light L, the ultraviolet curing adhesive curing portions 4A and 4B are formed.
As a result, the second component 13 and the third component 23 are fixed to the first component 22.

After step S3, step S4 in this embodiment is performed. In this step, one of the first component 22, the second component 13, and the third component 23 is held, and the other is released.
In the present embodiment, the holding portions 24A, 16A, and 26A are formed on the outer peripheral portions of the first component 22, the second component 13, and the third component 23 that are the outermost surfaces of the optical assembly 21, respectively. For this reason, the holding portions 24A, 16A, and 26A are holding portions formed at portions that can be held and released independently. That is, holding one of the holding portions 24A, 16A, and 26A does not prevent other holding releases.
Therefore, it is possible to release the holding of one of the first component 22, the second component 13, and the third component 23 while holding one.
In this embodiment, as shown in FIG. 12, as an example, holding of the holding portions 16A and 26A by the holding jigs 10 and 20 is released.

After step S4, step S5 in this embodiment is performed. In this step, the thermosetting adhesive 5L is applied in the same manner as in step S4 in the second embodiment with one of the first component 22, the second component 13, and the third component 23 held. Harden.
For example, as shown in FIG. 11, the first component 22 is held by the holding jig 9, and is carried into the heating tank 30, and the first component 22, the second component 13, and the third component 23 are entirely moved. You may heat to.
When the thermosetting adhesive 5L is thermoset by heating, thermosetting adhesive curing portions 5A and 5B are formed.
Thus, step S5 is completed, and the first component 22, the second component 13, and the third component 23 are bonded and fixed by the ultraviolet curable adhesive curing portions 4A and 4B and the thermosetting adhesive curing portions 5A and 5B. .
In this way, the method for bonding and fixing the optical assembly according to this embodiment is completed.
When the holding jig 9 is released, the optical assembly 21 shown in FIG. 10 is manufactured.

The present embodiment is different from the second embodiment in that the number of assembly components in the optical assembly of the second embodiment is two, whereas the number of assembly components is three.
Therefore, similarly to the second embodiment, the first component 22, the second component 13, and the third component 23, which are the assembly components of the optical assembly 21, are fixed with high strength and high accuracy. be able to.

[Fourth Embodiment]
An optical assembly according to a fourth embodiment of the present invention will be described.
FIG. 13: is typical sectional drawing which shows an example of the optical assembly of the 4th Embodiment of this invention.

As shown in FIG. 13, the optical assembly 31 of the present embodiment replaces the first component 12 and the second component 13 of the optical assembly 11 in the second embodiment with a first component 32 (assembly configuration). A component, a first assembly component, an optical component), and a second component 33 (an assembly component, a second assembly component, an optical component). The first component 32 and the second component 33 are bonded and fixed to each other by the ultraviolet curable adhesive curing portion 4 and the thermosetting adhesive curing portion 5 as in the second embodiment.
Hereinafter, a description will be given focusing on differences from the second embodiment.

  The first component 32 includes a lens portion 32a, a flange portion 32b, a first tubular portion 32c, and a second tubular portion 32d.

  The lens part 32a is a part constituting a lens having the same optical characteristics as the first lens 15 in the second embodiment. However, even when the first lens 15 includes a lens group, the lens portion 32a is formed by a single lens having equivalent optical characteristics. For this reason, the lens surface configuration of the lens portion 32 a may be different from the lens surface configuration of the first lens 15.

  The flange portion 32b is a plate-like portion that extends radially outward from the outer peripheral portion of the lens portion 32a. The outer diameter of the flange portion 32b is equal to the outer diameter of the disc portion 14a in the second embodiment.

The 1st cylindrical part 32c is a cylindrical part extended in the direction orthogonal to the flange part 32b in the outer peripheral part of the lens part 32a. The central axis of the first cylindrical portion 32c is coaxial with the lens optical axis O32a of the lens portion 32a.
The inner diameter, outer diameter, and axial length of the first cylindrical portion 32c are equivalent to the first cylindrical portion 14b in the second embodiment. However, the length in the axial direction of the first cylindrical portion 32c is equivalent to that of the first cylindrical portion 14b. The length from the main surface of the lens portion 32a to the distal end surface of the first cylindrical portion 32c is measured. Means that the first component 12 is equal to the length from the main surface of the first lens 15 to the tip surface of the first cylindrical portion 14b.

The second cylindrical portion 32d is a cylindrical portion that extends in the direction orthogonal to the flange portion 32b at the outer peripheral portion of the flange portion 32b. The central axis of the second cylindrical portion 32d is coaxial with the lens optical axis O32a of the lens portion 32a.
The inner diameter, outer diameter, and axial length of the second cylindrical portion 32d are the same as those of the second cylindrical portion 14c in the second embodiment. However, the axial length of the second cylindrical portion 32d is equivalent to that of the second cylindrical portion 14c. The measured length from the main surface of the lens portion 32a to the distal end surface of the second cylindrical portion 32d. This means that the length of the first component 12 is equal to the length from the main surface of the first lens 15 to the tip surface 14d.

  The first component 32 is integrally formed of resin or glass. The first part 32 may be formed by molding resin or glass, or may be formed by removing the resin or glass base material.

With such a configuration, the first component 32 is a component in which the first lens 15 and the first lens frame 14 in the second embodiment are integrated.
The second cylindrical portion 32d is formed with a holding portion 14A and a first adhesive surface 14B, similarly to the second cylindrical portion 14c in the second embodiment.
Similarly to the second embodiment and the first tubular portion 14b, a second adhesive surface 14C is formed on the first tubular portion 32c.

  The second component 33 includes a lens portion 33a, a flange portion 33b, and a cylindrical portion 33c.

  The lens part 33a is a part constituting a lens having the same optical characteristics as the second lens 17 in the second embodiment. However, even when the second lens 17 includes a lens group, the lens portion 33a is formed by a single lens having equivalent optical characteristics. For this reason, the lens surface configuration of the lens portion 33 a may be different from the lens surface configuration of the second lens 17.

  The flange portion 33b is a plate-like portion that extends radially outward from the outer peripheral portion of the lens portion 33a. The outer diameter of the flange portion 33b is equal to the outer diameter of the flange portion 16b in the second embodiment.

The cylindrical part 33c is a cylindrical part extended in the direction orthogonal to the flange part 33b in the outer peripheral part of the lens part 33a. The central axis of the cylindrical portion 33c is coaxial with the lens optical axis O33a of the lens portion 33a.
The cylindrical portion 33c has the same inner diameter, outer diameter, and axial length as the cylindrical portion 16a in the second embodiment. However, the axial length of the cylindrical portion 33c is equivalent to that of the cylindrical portion 16a. The length from the main surface of the lens portion 33a to the distal end surface of the cylindrical portion 33c is the second part. 13 is equal to the length from the main surface of the second lens 17 to the tip surface of the cylindrical portion 16a.

  A step portion 33d similar to the step portion 16c in the second embodiment is formed between the flange portion 33b and the cylindrical portion 33c.

  The second component 33 is integrally formed of resin or glass. The second component 33 may be formed by molding resin or glass, or may be formed by removing the resin or glass base material.

With such a configuration, the second component 33 is a component in which the second lens 17 and the second lens frame 16 in the second embodiment are integrated.
As in the flange portion 16b in the second embodiment, a holding portion 16A is formed on the flange portion 33b.
The first bonding surface 16B is formed on the step portion 33d and the cylindrical portion 33c, similarly to the step portion 16c and the cylindrical portion 16a in the second embodiment.
Similar to the cylindrical portion 16a in the second embodiment, a second adhesive surface 16C is formed on the cylindrical portion 33c.

The optical assembly 31 is manufactured by adhering and fixing the first component 32 and the second component 33 by the same optical assembly adhesive fixing method as in the second embodiment.
For this reason, in the optical assembly 31, the first component 32 and the second component 33, which are the assembly components of the optical assembly 31, are fixed with high strength and high accuracy in the same manner as in the second embodiment. The
In particular, according to the optical assembly 31 of the present embodiment, the first component 32 and the second component 33 are each composed of one component, so the configuration is simplified and the manufacturing cost can be reduced.

[Fifth Embodiment]
An optical assembly according to a fifth embodiment of the present invention will be described.
FIG. 14 is a schematic cross-sectional view showing an example of an optical assembly according to the fifth embodiment of the present invention.

As shown in FIG. 14, the optical assembly 41 of the present embodiment replaces the first component 32 of the optical assembly 31 in the fourth embodiment with a first component 42 (an assembly component, a first component). It includes an assembly component and an optical component, and is configured by adding a third component 43 (an assembly component, a second assembly component and an optical component).
The first component 42 is a component in which the first component 22 and the first lens 15 in the third embodiment are integrated.
The third component 43 is a component in which the third component 23 and the third lens 27 in the third embodiment are integrated.
The first component 42 and the second component 33 are bonded and fixed to each other by the ultraviolet curable adhesive curing portion 4A and the thermosetting adhesive curing portion 5A in the same manner as in the third embodiment.
The third component 43 is adhered and fixed to each other by the ultraviolet curable adhesive curing portion 4B and the thermosetting adhesive curing portion 5B in the same manner as in the third embodiment.
The following description will focus on differences from the third and fourth embodiments.

  The first part 42 is configured by adding a third cylindrical part 42c and a fourth cylindrical part 42d to the first part 32 in the fourth embodiment.

The third cylindrical portion 42c is a cylindrical portion that extends coaxially with the lens optical axis O32a from the surface on the opposite side of the outer periphery of the lens portion 32a where the first cylindrical portion 32c is formed. .
The inner diameter, outer diameter, and axial length of the third cylindrical portion 42c are the same as those of the third cylindrical portion 24b in the third embodiment.
Similar to the third embodiment, a fourth adhesive surface 24C is formed on the third cylindrical portion 42c.

The fourth cylindrical portion 42d protrudes from the flange portion 32b radially outside the third cylindrical portion 42c in the same direction as the third cylindrical portion 42c, and extends in the same direction as the lens optical axis O32a. It is a shaped part.
The inner diameter, outer diameter, and axial length of the fourth cylindrical portion 24c are the same as those of the fourth cylindrical portion 24c in the third embodiment.
Similarly to the fourth cylindrical portion 24c in the third embodiment, a holding portion 24A is formed in the fourth cylindrical portion 42d and the second cylindrical portion 32d.
Similar to the fourth cylindrical portion 24c in the third embodiment, a third adhesive surface 24B is formed on the fourth cylindrical portion 42d.

  The first component 42 is integrally formed of resin or glass, like the first component 32 in the fourth embodiment.

  The third component 43 includes a lens portion 43a, a flange portion 43b, and a cylindrical portion 43c.

  The lens portion 43a is a part constituting a lens having the same optical characteristics as the third lens 27 in the third embodiment. However, even when the third lens 27 includes a lens group, the lens portion 43a is formed by a single lens having equivalent optical characteristics. For this reason, the lens surface configuration of the lens portion 43 a may be different from the lens surface configuration of the third lens 27.

  The flange portion 43b is a plate-like portion that extends radially outward from the outer peripheral portion of the lens portion 43a. The outer diameter of the flange portion 43b is equal to the outer diameter of the flange portion 26b in the third embodiment.

The cylindrical part 43c is a cylindrical part extended in the direction orthogonal to the flange part 43b in the outer peripheral part of the lens part 43a. The central axis of the cylindrical portion 43c is coaxial with the lens optical axis O43a of the lens portion 43a.
The cylindrical portion 43c has the same inner diameter, outer diameter, and axial length as the cylindrical portion 26a in the fourth embodiment. However, the axial length of the cylindrical portion 43c is equivalent to the cylindrical portion 26b. The length from the main surface of the lens portion 43a to the distal end surface of the cylindrical portion 43c is the third part. 23 is equal to the length from the main surface of the third lens 27 to the tip surface of the cylindrical portion 26b.

  A step portion 43d similar to the step portion 16c in the second embodiment is formed between the flange portion 43b and the cylindrical portion 43c.

A holding portion 16A is formed on the flange portion 43b, as in the flange portion 26b in the third embodiment.
Similar to the step portion 26c and the cylindrical portion 26b in the third embodiment, a first adhesive surface 26B is formed on the step portion 43d and the cylindrical portion 43c.
Similar to the cylindrical portion 26b in the third embodiment, a second adhesive surface 26C is formed on the cylindrical portion 43c.

The optical assembly 41 is manufactured by bonding and fixing the first component 42, the second component 33, and the third component 43 by the same optical assembly bonding and fixing method as in the third embodiment. The
For this reason, the optical assembly 41 provides high strength to the first component 42, the second component 33, and the third component 43, which are assembly components of the optical assembly 41, as in the fourth embodiment. And it is fixed with high precision.
In particular, according to the optical assembly 41 of the present embodiment, the first component 42, the second component 33, and the third component 43 are each composed of one component, so the configuration is simplified and the manufacturing cost can be reduced. it can.

  In the above description of each embodiment, an example in which there are two or three assembly components in the optical assembly has been described. However, the number of assembly components is not limited to this. The number of assembly components in the optical assembly may be four or more.

In the description of the above-described embodiment, an example in which an optical component such as the first lens 15 is bonded and fixed to a holding frame such as the first lens frame 14 in the assembly component has been described. However, when the assembly component is an assembly of an optical component and a non-optical component such as a holding frame, the fixing method of the optical component and the non-optical component is not limited to adhesive fixing.
For example, the optical component may be fixed using a member such as a presser ring that is screwed to the non-optical component.
For example, an engaging portion that engages with each other may be provided to the non-optical component and the optical component, and the respective engaging portions may be engaged to fix each other.
For example, the optical components may be fixed to each other by press-fitting the non-optical components.
For example, the non-optical components may be fixed to each other by deforming some of the non-optical components and crimping the optical components.

In the description of the first embodiment, the example in which the ultraviolet curable adhesive curing portion and the thermosetting adhesive curing portion are formed at positions adjacent to each other in the axial direction of the assembly component has been described.
In the description of the second to fifth embodiments, the ultraviolet curable adhesive curing portion and the thermosetting adhesive curing portion are located at substantially the same position in the axial direction of the assembly component and overlap in the radial direction. In particular, the example in which the ultraviolet curable adhesive cured portion is formed on the outer peripheral side and the thermosetting adhesive cured portion is formed on the inner peripheral side has been described.
However, the positional relationship between the ultraviolet curable adhesive cured portion and the thermosetting adhesive cured portion is not limited thereto.
For example, the ultraviolet curable adhesive curing part and the thermosetting adhesive curing part may be formed on the same circumference.
For example, if it is a part which can irradiate UV light, you may form an ultraviolet curing adhesive hardening part in an inner peripheral side, and a thermosetting adhesive hardening part in an outer peripheral side.

In the description of each of the above embodiments, the ultraviolet curable adhesive curing portion and the thermosetting adhesive curing portion are described as examples in the case where the ultraviolet curable adhesive and the thermosetting adhesive are formed, respectively.
However, the ultraviolet curable adhesive curing part and the thermosetting adhesive curing part may be formed of one kind of adhesive capable of ultraviolet curing and thermal curing.

  In the description of each of the above embodiments, the example in which the holding unit is formed of a smooth surface, a rough surface, and an uneven surface has been described. However, the shape of the holding unit is not limited thereto. The holding part may have, for example, a protruding part, a recessed hole part, a through hole, an appropriate engaging part, and the like.

As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment and its modification. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention.
Further, the present invention is not limited by the above description, and is limited only by the appended claims.

1, 11, 21, 31, 41 Optical assembly 2, 12, 22 First component (assembly component, first assembly component)
2A, 3A, 14A, 16A, 24A, 26A Holding portion 2B, 3B, 14B, 16B, 26B First adhesive surface 2C, 3C, 14C, 16C, 26C Second adhesive surface 3, 13 Second component (assembly component) , Second assembly component)
4, 4A, 4B UV curable resin curing part 4L UV curable adhesive 5, 5A, 5B Thermosetting adhesive curing part 5L Thermosetting adhesive 9, 10, 20 Holding jig 12a, 13a Adhesive curing part 14, 24 1 lens frame 15 1st lens (optical component)
16 Second lens frame 17 Second lens (optical component)
23 Third part (assembly component, second assembly component)
24B Third bonding surface 24C Fourth bonding surface 26 Third lens frame 27 Third lens (optical component)
30 Heating tanks 32, 42 First parts (assembly parts, first assembly parts, optical parts)
32a, 33a, 43a Lens part (optical component)
33 Second component (assembly component, second assembly component, optical component)
43 Third part (assembly part, second assembly part, optical part)
L UV light O14, O16, O24, O26 Center axis O32a, O33a, O43a Lens optical axis

Claims (2)

An optical assembly adhesive fixing method for forming an optical assembly by adhesively fixing a plurality of assembly components including an assembly component having an optical component, comprising:
Among the plurality of assembly components, assembling by interposing an ultraviolet curable adhesive and a thermosetting adhesive between the parts to be fixed to each other;
Holding the plurality of assembly components in a state where the ultraviolet curing adhesive and the thermosetting adhesive are uncured, respectively, and adjusting the relative positions of the plurality of assembly components;
Curing the UV curable adhesive in a state where the plurality of assembly components are held in an adjusted position;
After the UV curable adhesive is cured, holding one of the plurality of assembly components and releasing the other of the plurality of assembly components;
Curing the thermosetting adhesive while holding one of the plurality of assembly components;
A method for bonding and fixing an optical assembly. An optical assembly in which a plurality of assembly components including an assembly component having an optical component are bonded and fixed via an adhesive curing part,
Of the plurality of assembly components, the first assembly component and the second assembly component that are bonded and fixed to each other are:
Each has a holding portion at a portion that can be held and released independently of each other, and the adhesive cured portion is fitted with a gap that is relatively movable in an uncured state,
The adhesive curing portion between the first assembly component and the second assembly component is:
An ultraviolet curable adhesive curing portion formed by curing an ultraviolet curable adhesive filled in a first region between the first assembly component and the second assembly component;
A thermosetting adhesive curing part formed by curing a thermosetting adhesive filled in a second region between the first assembly component and the second assembly component;
including,
Optical assembly.

Images