WO2017009904A1

WO2017009904A1 - Light regulation device and optical instrument equipped with light regulation device

Info

Publication number: WO2017009904A1
Application number: PCT/JP2015/069931
Authority: WO
Inventors: 龍彦沖田
Original assignee: オリンパス株式会社
Priority date: 2015-07-10
Filing date: 2015-07-10
Publication date: 2017-01-19

Abstract

It is desirable for light regulation devices to be configured so as to be small, to involve easy steps of assembly in a assembly task, and to allow a stable oscillating operation to be realized. This light regulation device has a start-up mechanism and an electromagnetic drive source. The start-up mechanism is configured from a rotating shaft that accommodates a magnet and has two flanges on the side peripheral surface, and a substrate on which the rotating shaft is axially mounted in a rotatable manner. The rotating shaft is fitted into a hole or notch formed in the substrate, an upper substrate is disposed so as to be sandwiched between the flanges, and the electromagnetic drive source is provided upright on the substrate with a desired tilt.

Description

Light adjusting device and optical apparatus equipped with light adjusting device

The present invention relates to a light adjusting device that inserts and removes a light adjusting element that acts on a light beam transmitted through an optical path on the optical path, and an optical device that includes the light adjusting device.

Generally, a light adjusting element known as a diaphragm or a filter is disposed on the optical path of an optical device, and exerts an action suitable for each purpose on a passing light beam. Depending on the optical equipment, not only a configuration in which the light adjusting element is fixed on the optical path but also a form in which the light adjusting element is retracted from the optical path is required. ing.

As an optical device, for example, when it is mounted on a light adjusting device in an insertion portion of an endoscope used for medical or industrial purposes, downsizing is required. As an example of a light adjusting device mounted on an optical apparatus, Patent Document 1 discloses a downsized light adjusting device.

Japanese Patent Laid-Open No. 9-22042

The light adjusting device can be reduced in size in the optical axis direction (thickness direction) and / or in the radial direction (plane direction) intersecting the optical axis, depending on the structure employed. If the mounting target is a long shape extending along the optical axis from the operation unit, such as an insertion portion of an endoscope, the so-called so-called downsizing in the radial direction rather than downsizing in the optical axis direction There is a strong demand for reducing the diameter.

In the above-mentioned Patent Document 1, an electromagnetic drive device is proposed in which an annular yoke is arranged so as to surround the photographing lens, and an electromagnetic force generated by a coil wound around the annular yoke is used as a shutter drive source. This electromagnetic drive device has a technical feature in that a shutter drive source is disposed so as to surround the photographing lens. Such a configuration can achieve downsizing in the thickness direction, but it is necessary to secure a space for arranging the yoke and the coil on the outer peripheral side of the photographing lens. Is unsuitable due to many restrictions such as affecting the diameter of the taking lens.

In addition, when the device on which the light adjustment device is mounted is, for example, the distal end of the insertion portion of the endoscope and the outer diameter is about several mm to 1 cm, the light adjustment device naturally has a size smaller than that. . That is, since it is extremely small, there is a demand for a configuration that is an easy assembly process and that can realize stable operation.

Therefore, the present invention provides a light adjusting device that realizes a stable swinging operation of the light adjusting element by an easy assembly process, and that realizes a reduction in the diameter of the optical device, and an optical device equipped with the light adjusting device. The purpose is to do.

In order to achieve the above object, a light adjusting device according to an embodiment of the present invention includes a light adjusting unit acting on at least one optical path, a magnet having magnetism provided in the light adjusting unit, and a rotating shaft body. An electromagnetic drive source arranged to have a predetermined inclination with respect to a vertical plane, wherein the light adjustment device has a holding member, and the magnet is interposed via the held member. The holding member is rotatably held.

According to the present invention, there is provided a light adjusting device that realizes a stable swinging operation of the light adjusting element by an easy assembly process, and a light adjusting device that realizes a reduction in the diameter of the optical device, and an optical device that includes the light adjusting device. Can be provided.

FIG. 1 is an exploded configuration diagram illustrating the light adjusting device according to the first embodiment. FIG. 2 is a perspective view showing an external configuration of the light adjusting device viewed obliquely from above. FIG. 3 is a diagram illustrating an external configuration of the light adjusting device viewed from the front. FIG. 4 is a diagram illustrating a cross-sectional configuration of the swinging portion of the light adjusting device. FIG. 5 is a diagram illustrating a conceptual configuration of the drive mechanism of the light adjusting device. FIG. 6A is a diagram illustrating a first assembly process of the light adjusting device. FIG. 6B is a diagram illustrating a second assembly process of the light adjusting device. FIG. 6C is a diagram illustrating a third assembly step of the light adjusting device. FIG. 7 is a diagram illustrating a configuration of a drive power supply unit in the light adjusting device. FIG. 8 is a perspective view showing an insertion portion of an endoscope in which the light adjusting device is mounted. FIG. 9 is a perspective view showing an exploded configuration of the light adjusting device according to the second embodiment. FIG. 10 is a perspective view showing an external configuration of the light adjusting device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
The light adjusting device according to the first embodiment will be described. FIG. 1 is an exploded configuration diagram illustrating the light adjustment device according to the first embodiment, FIG. 2 is a perspective view illustrating an external configuration of the light adjustment device viewed from obliquely above, and FIG. 3 is a front view of the light adjustment device. FIG. 4 is a diagram showing a cross-sectional configuration of the oscillating portion of the light adjusting device, and FIG. 5 is a conceptual configuration of the oscillating portion of the light adjusting device viewed obliquely from above. FIG. In the following description of each embodiment, as shown in FIG. 1, the optical axis direction of the optical path is defined as the Z-axis direction, and the directions orthogonal to the Z-axis direction and orthogonal to each other are defined as the X-axis direction and the Y-axis direction.

The light adjusting device 1 according to the present embodiment includes a drive mechanism 10 and an electromagnetic drive source (electromagnetic drive unit) 13 that is erected on both side surfaces of the drive mechanism 10 and forms a magnetic circuit described later.
The driving mechanism 10 has a spacer 4 interposed behind the lower substrate 2 on the flat plate, and places the upper substrate (substrate portion or holding member) 3 above the spacer 4 in parallel with the lower substrate 2. The upper substrate 3 or the swinging portion 5 is rotatably supported. The oscillating portion 5 includes a columnar magnet (rotating shaft member) 6, a rotating shaft body 7 having permeability and accommodating the magnet 6, and a rotating arm portion (blade) attached to the bottom surface of the rotating shaft body 7. Part) 8.

The lower substrate 2 and the upper substrate 3 are formed into the same rectangular plate using a hard material. In the present embodiment, the lower substrate 2 and the upper substrate 3 have the same shape, but this is a design matter, and the shape and size are appropriately changed according to the installation space of the equipment to be mounted.

Further, the upper substrate 3 is provided with a shaft support hole 3b, and a rotating shaft body 7 of the swinging portion 5 is fitted in a rotatable manner. The rotating shaft body 7 is erected vertically with respect to the flat upper substrate 3, and the center axis of rotation is the Z-axis direction. Here, the central axis of the rotating shaft body 7 (magnet 6) coincides with the rotational central axis Z1 of the swinging portion 5. Hereinafter, the side where the rotating arm portion 8 of the drive mechanism 10 protrudes is referred to as a front surface, and both sides of the front surface are referred to as side surfaces.

The rotating shaft body 7 of the swinging part 5 has a hollow cylindrical shape, and a magnet (rotating shaft member) 6 is fitted therein. The magnet 6 is made of a hard magnetic material such as ferrite, neodymium, samarium cobalt or the like, and has an outer shape that matches the inner shape of the rotary shaft 7, and is formed in a cylindrical shape here. The magnet 6 is bisected by a plane passing through a cylindrical central axis, and an N pole is magnetized in one semi-cylindrical shape and an S pole is magnetized in the other semi-cylindrical shape. In this example, since the bottom of the rotating shaft body 7 has a cylindrical shape that opens, the bottom surface of the magnet 6 and the lower end of the rotating shaft body 7 (or the back surface of the rotating arm 8) are on the same plane. . The rotary shaft 7 may be formed in a cap shape with a bottom. In this case, the magnet 6 is fixed in contact with the upper surface of the bottom.

The rotating shaft body 7 is composed of a shaft body 7a and an upper flange portion 7b (held member) both made of a metal material. As shown in FIG. 4, the shaft body 7 a is integrally formed with a lower flange portion 7 c below the outer peripheral surface. Further, a step 7d is provided in the middle of the outer peripheral surface, and the upper portion thereof has a reduced diameter. The individually produced upper flange portion 7b is fitted to the step 7d in the thinned upper portion, and is fixed using an adhesive or the like. The separation distance L between the upper flange portion 7b and the lower flange portion 7c is set to a distance obtained by adding a gap enabling rotation to the thickness of the upper substrate 3. The upper flange portion 7b and the lower flange portion 7c function as a guide portion in the shaft body 7a, and form a groove addressed to the upper substrate 3 between the flanges. In addition, you may set the separation distance L by adjusting the dimension and assembly method of each member.

One end of the rotating arm portion 8 is bonded to the lower surface of the rotating shaft body 7. As this bonding method, for example, an adhesive, welding, solder, or the like can be applied. In addition, even if the adhesive force is weakened, it is possible to prevent the rotating arm portion 8 from being detached from the rotating shaft body 7 by forming the rotating arm portion 8 from a metal material and attracting it with the strong magnetic force of the magnet 6.

At the other end of the rotating arm portion 8, a hole 8a into which the light adjusting portion (light adjusting element) 9 is fitted is formed. The light adjusting unit 9 is an aperture, a shutter, a lens, a light shielding plate, a filter, or the like, and may be fixed in the hole 8a or may be configured to be detachably attached. The rotating arm unit 8 of the present embodiment rotates in a direction M (X axis-Y axis direction) orthogonal to the optical axis direction.
A U-shaped spacer 4 is fixed to the rear of the lower substrate 2. As shown in FIG. 3, the spacer 4 defines a distance between the lower substrate 2 and the upper substrate 3 and is set to a height at least so that the rotating arm portion 8 does not contact the lower substrate 2.

As shown in FIG. 5, the ends of the U-shaped protruding both sides of the spacer 4 have a rotation range (rotation angle) M or a stop position of the rotation arm portion 8 by the contact of the rotation arm portion 8. It functions as the

stoppers

4a and 4b to be defined. That is, in the present embodiment, the position at which the turning arm portion 8 is applied to the stopper 4a is set as a first stop position, and the position applied to the stopper 4b is set as a second stop position.

The position of the two optical paths (optical axes) that are light-adjusted by the light adjusting device 1 is defined by the stop position of the hole 8a of the rotating arm portion 8. In other words, in the present embodiment, the position sensor for the rotation arm unit 8 and the structure for performing the rotation position control are not provided, and therefore the optical path of the light beam to be optically adjusted is the first of the rotation arm unit 8. It becomes a position which passes the hole 8a when it has stopped at the position or the second position. Here, the optical path passing through the hole 8a is the first optical path when the rotating arm unit 8 is stopped at the first position, and passes through the hole 8a when stopped at the second position. Let the optical path be the second optical path.

Here, with reference to FIG. 6A thru | or 6C, the assembly | attachment of the rotating shaft body 7 to the upper board | substrate 3 in a light adjusting device is demonstrated.
First, as shown in FIG. 6A, the rotating shaft body 7 is fitted into the shaft support hole 3b of the upper substrate 3 from the upper portion with the upper flange portion 7b removed, and is brought into contact with the lower flange portion 7c. . Next, as shown in FIG. 6B, the upper flange portion 7b is fitted from the upper portion and brought into contact with the step 7d. In this state, as described above, the rotary shaft body 7 is set to a rotatable distance L with respect to the upper substrate 3. At this time, a lubricant or the like may be applied to the shaft support hole 3b so as to reduce the friction caused by the rotation of the rotating shaft body 7.

Thereafter, as shown in FIGS. 6A and 6B, the upper flange portion 7b is fixed to the outer peripheral surface of the rotating shaft body 7 with an adhesive or the like in contact with the step 7d of the rotating shaft body 7. In addition, the rotating shaft body 7 does not necessarily need to form the level | step difference 7d, The cylindrical shape which has a flat circumferential surface may be sufficient. When the rotating shaft body 7 and the upper flange portion 7b are fixed by an adhesive, after assembling the upper substrate 3 to the shaft body 7a during assembly shown in FIG. 6A, for example, so as not to contact the adhesive, A U-shaped adjustment spacer (not shown) that is not in contact with the shaft body 7a is disposed and held so as to be sandwiched between the upper substrate 3 and the upper flange portion 7b, and the adhesive is cured and then used for adjustment. The spacer may be extracted.

The electromagnetic drive source 13 of the present embodiment has a U shape, and is joined and erected so that both open ends are applied to both side surfaces of the drive mechanism 10. As one method of this bonding, adhesion or the like is applied to the bonding surfaces of each other and bonded. The electromagnetic drive source 13 has a configuration in which a coil 14 is wound around a so-called yoke 11 formed in a U shape using a conductive material such as iron or a magnetically permeable (soft magnetic) material.

The coil 14 is provided so as to be wound at a position facing the upper surface of the upper substrate 3 at the center of the bottom of the U-shape of the yoke 11 shown in FIG. However, since the coil 14 may be provided on the yoke 11 to generate a magnetic flux, the location of the coil 14 is not limited to the position facing the upper surface of the upper substrate 3.

The electromagnetic drive source 13 is bonded to the side surfaces of the drive mechanism 10 in such a manner that the

end portions

11a and 11b on both sides of the yoke 11 open are perpendicular to the upper surface of the upper substrate 3 (Z-axis direction). The gap between the end 11a and the end 11b is a so-called gap through which magnetic flux passes. At this time, the rotary shaft body 7 is taken into the magnetic field forming region (gap) 13 a by the yoke 11.

In the present embodiment, the electromagnetic drive source 13 is erected in the orthogonal direction (Z-axis direction) with the upper surface (XY plane) of the upper substrate 3 as a reference. However, the present invention is not limited to this, and it may be within an angle range of 0 ° <θ <180 °, where the XY plane is 0 °. However, in order to obtain an effect as a radial downsizing, the top of the electromagnetic drive source 13 does not protrude from the outer peripheral line of the circular arc drawn by the outer tip when the swinging part 5 rotates. The angle is such that the electromagnetic drive source 13 does not enter the optical path for light adjustment. At that time, when the yoke 11 enters the optical path, the U-shape may be deformed if the yoke 11 can be deformed.

FIG. 7 shows a configuration of a drive power supply unit that supplies drive power to the coil 14 of the electromagnetic drive source 13.
The electromagnetic drive source 13 includes a changeover switch 31 connected to both ends of the coil 14, and a DC power supply 32 that supplies DC power to the changeover switch 31. The changeover switch 31 switches the polarity (positive / negative) of DC power supplied from the DC power supply 32 as appropriate and applies it to the coil 14. The DC power switching operation of the selector switch 31 is executed according to an instruction from the operation unit of the mounted device.

The coil 14 functions as an electromagnet when DC power is applied, and applies a magnetic flux H to the yoke 11. The yoke 11 having a U-shape allows the magnetic flux H to pass therethrough, forms a magnetic field in the magnetic field forming region 13a between the

end portions

11a and 11b, and causes the magnetic field to act on the magnet 6 made of a hard magnetic material. Generate suction or repulsion. That is, when the polarity of the magnetic field and the polarity of the magnet 6 (N pole, S pole) are the same, a repulsive force is generated, causing the rotary shaft 7 to rotate halfway to the opposite side. Further, when the polarity of the magnetic field and the polarity of the magnet 6 are different, an attractive force is generated, and the rotating shaft 7 does not rotate and maintains that state.

The rotation of the rotating shaft 7 is brought into a stopped state by rotating the rotating arm portion 8 and applying the rotating arm portion 8 to any one of the

stoppers

4a and 4b described above. In this configuration, when the dipole magnet 6 is used, the rotation range (rotation angle) of the rotation arm portion 8 is set to 180 degrees or less. By such rotation of the rotation arm unit 8, the first optical path and the second optical path where light adjustment is performed are switched.
According to the light adjusting device of the present embodiment, the electromagnetic drive source 13 that generates electromagnetic force and moves the light adjusting unit 9 in the direction intersecting the optical path is erected in the direction along the optical path, so that the optical path Downsizing in the direction (radial direction) that intersects with can be realized.

Further, the rotating shaft body 7 of the swinging portion 5 is sandwiched from the upper and lower sides of the upper substrate 3 by the upper flange portion 7b and the lower flange portion 7c so as to be rotatable. Since the friction is concentrated around the rotation axis, the driving efficiency is high and a stable rotation operation can be obtained. Moreover, since the magnet 6 is accommodated in the rotating shaft body 7 and covered with a cap 11 by the yoke 11 of the electromagnetic drive source 13, it is protected and has excellent durability.

The light adjusting device 1 of the present embodiment can be disposed on the optical path of an optical device. Examples of the light beam transmitted through the optical path include a light image formed on the photographing optical system, illumination light, visible light, infrared light, and ultraviolet light. Examples of the optical apparatus on which the light adjusting device 1 is mounted include at least an imaging device (imaging optical system), an illumination device, a microscope, an optical measurement device, an optical reading device (such as a barcode reader) and the like.

For example, as shown in FIG. 8, the light adjustment device 1 of the present embodiment is mounted on an imaging optical system disposed in an insertion portion 41 of an endoscope 40 that is an observation device in a lumen or a lumen. be able to. They are arranged so as to be interposed on the optical path for propagating the optical image formed by the imaging optical system. Here, the light adjusting unit 9 is an aperture, a shutter, a lens, a light shielding plate, a filter, or the like. The light adjusting unit 9 is rotated by the rotating arm unit 8 so as to switch between the two optical paths. The light adjusting device 1 of the present embodiment can arrange the light adjusting unit 9 not only on the optical path of the formed optical image but also on the optical path of the illumination light. For example, if it is a shutter, Switching operation between illumination light shielding and light shielding is possible.

The insertion portion 41 has a hard portion 43 disposed at the distal end, and a bending portion 42 that bends in response to an operator's operation on a proximal end side thereof, and a flexible portion that is continuously provided on the proximal end side of the bending portion 42. Have. In FIG. 8, if the longitudinal direction of the bending portion 42 is the optical axis direction L (Z-axis direction) and the radial direction (X-axis-Y-axis direction) R orthogonal to the optical axis direction L is shown in FIG. The upper surface of the upper substrate 3 is arranged in the radial direction R, and the electromagnetic drive source 13 is incorporated in the hard portion 43 so as to stand upright in the optical axis direction L.

The hard part 43 has a cylindrical shape, is provided with an imaging window 44 on the tip surface, and houses various units such as an imaging element and an imaging optical system. The light adjusting device 1 includes an optical axis of a light image formed on the imaging optical system in the hard part 43 and an optical path defined by the hole 8a of the rotating arm part 8 (first optical path, second optical path). Are incorporated so that at least one of them matches.

The light adjusting unit 9 is attached to the hole 8a of the rotating arm unit 8. Here, although the example which provided the light adjusting device 1 in the hard part 43 is given, if it is the arrangement | positioning which a light image permeate | transmits the hole 8a of the rotation arm part 8, it will be limited to arrangement | positioning in the hard part 43. Instead, it may be in an operation portion provided on the proximal end side of an insertion portion (not shown).

As described above, by incorporating the light adjusting device 1 into the insertion portion 41 of the endoscope, it is possible to reduce the size in the radial direction orthogonal to the longitudinal direction of the insertion portion 41 and contribute to the reduction in the diameter of the insertion portion 41. . In addition, although the electromagnetic drive source 13 was demonstrated in the example stored in the hard part 43 in the state standing upright with respect to the drive mechanism 10, when other components become obstacles in storing. It is also possible to set the electromagnetic drive source 13 by tilting as appropriate.

[Second Embodiment]
Next, the light adjusting device according to the second embodiment will be described.
FIG. 9 is a perspective view showing an exploded configuration of the light adjusting device according to the second embodiment, and FIG. 10 is a perspective view showing an external configuration of the light adjusting device. In the description of this embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted. The light adjusting device of the present embodiment is different in the mounting structure of the swing part 5 in the drive mechanism of the first embodiment described above. In the present embodiment, when the rotary shaft 7 is attached to the upper substrate 3, the rotary shaft 7 is rotatably held by the frame body (drop-off preventing member) 51.

In the drive mechanism 50 of this embodiment, the lower substrate 2 and the upper substrate 3 that are both flat plates are arranged in parallel with the spacer 4 interposed therebetween, and are configured integrally. A U-shaped notch 3c is formed in the upper substrate 3 so as to open to the front. The notch 3c has a size that allows the shaft 7a shown in FIG. 4 to be rotatably fitted.

The rotating shaft body 7 is formed of a metal material, and an upper flange portion 7b and a lower flange portion 7c are integrally formed with the shaft body 7a at the time of manufacture. However, in the present embodiment, as in the first embodiment, there is no problem when the shaft body 7a and the upper flange portion 7b are separated from each other. In the configuration other than this, the rotating shaft body 7 has a hollow cylindrical shape, and is equivalent to the first embodiment, including that the magnet 6 is fitted therein.

The frame body 51 is formed in a flat plate of a hard material, and the inner opening 51a is larger than the diameter of the upper flange portion 7b and is attached so as to surround the upper flange portion 7b exposed on the upper substrate 3, and is dropped. It functions as a prevention member.
The assembly process will be described. The rotating shaft body 7 is in a state in which an upper flange portion 7b and a lower flange portion 7c are integrally provided.

The shaft body 7a of the rotating shaft body 7 is inserted into the notch portion 3c so that the upper substrate 3 is sandwiched between the upper flange portion 7b and the lower flange portion 7c. Next, the frame body 51 is put on the rotary shaft body 7 on the upper flange portion 7 b exposed from the opening 51 a of the frame body 51, and is bonded and fixed to the upper substrate 3. As shown in FIG. 10, the opening portion of the notch 3 c is configured to be closed by the frame body 51, so that the fitted rotary shaft body 7 is rotatably held on the upper substrate 3.

In this embodiment, the same effect as that of the first embodiment described above can be obtained. Further, since the rotating shaft body 7 in which the upper flange portion 7b and the lower flange portion 7c are integrally provided at the time of manufacture is an assembly process, the upper flange portion 7b is sandwiched between the upper substrate 3 and the upper flange portion 7b. The process of bonding and fixing to 7a is eliminated, and the assembly work is simplified.

DESCRIPTION OF SYMBOLS 1 ... Light adjusting device, 2 ... Lower board, 3 ... Upper board, 3b ... Shaft support hole, 3c ... Notch part, 4 ... Spacer, 4a, 4b ... Stopper, 5 ... Swing part, 6 ... Magnet, DESCRIPTION OF SYMBOLS 7 ... Rotary shaft body, 7a ... Shaft body, 7b ... Upper flange part, 7c ... Lower flange part, 7d ... Level difference, 8 ... Turning arm part, 8a ... Hole, 9 ... Light adjustment part, 10 ... Drive mechanism, 11 DESCRIPTION OF SYMBOLS Yoke, 11a ... End part, 11b ... End part, 13 ... Electromagnetic drive source, 13a ... Magnetic field formation area, 14 ... Coil, 31 ... Changeover switch, 32 ... DC power supply, 40 ... Endoscope, 41 ... Insertion part, 42 ... curved part, 43 ... hard part, 44 ... imaging window, 50 ... drive mechanism, 51 ... frame, 51a ... opening, Z1 ... rotation central axis.

Claims

A light control unit acting on at least one optical path;
A rotating shaft body having magnetism provided in the light adjusting unit;
An electromagnetic drive source disposed so as to have a predetermined inclination with respect to a vertical plane of the rotary shaft body;
A light control device comprising:
The light adjusting device has a holding member,
The rotating shaft is rotatably held by the holding member via a held member;
Light adjustment device characterized by.
The light adjusting device according to claim 1, wherein the holding member is a substrate and has a hole formed therein.
The light adjusting device according to claim 1, wherein the holding member is a substrate, and a notch is formed.
The light adjusting device according to claim 2 or 3, wherein the held member constitutes a guide portion.
The light adjusting device according to claim 4, wherein the guide portion has a groove shape.
A light control unit acting on at least one optical path;
A rotating shaft body having magnetism and holding the light adjusting section, and a swinging section having a substrate section on which the rotating shaft body is rotatably mounted;
A magnetic circuit for rotating the rotating shaft body is formed, and is arranged so as to cover the rotating shaft body so as to have a predetermined inclination with respect to a vertical plane along the rotating shaft of the rotating shaft body. A standing electromagnetic drive source;
Comprising
The rotating shaft body has two flange portions arranged at intervals on a side circumferential surface, passes through the substrate portion, and sandwiches the substrate portion by the flange portion. .
The light adjusting device according to claim 6, wherein the substrate portion has a hole for axial attachment.
The light adjusting device according to claim 6, wherein the substrate portion includes a notch portion that is axially attached and a frame that closes an opening portion of the notch portion.
An optical apparatus comprising the light adjusting device according to claim 1 or 6.
An endoscope comprising the light adjusting device according to claim 1 or 6.