WO2016208078A1 - Light adjustment device and optical instrument equipped with light adjustment device - Google Patents

Light adjustment device and optical instrument equipped with light adjustment device Download PDF

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Publication number
WO2016208078A1
WO2016208078A1 PCT/JP2015/068565 JP2015068565W WO2016208078A1 WO 2016208078 A1 WO2016208078 A1 WO 2016208078A1 JP 2015068565 W JP2015068565 W JP 2015068565W WO 2016208078 A1 WO2016208078 A1 WO 2016208078A1
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WO
WIPO (PCT)
Prior art keywords
light adjusting
positioning
unit
adjusting device
positioning portion
Prior art date
Application number
PCT/JP2015/068565
Other languages
French (fr)
Japanese (ja)
Inventor
智大 北中
Original Assignee
オリンパス株式会社
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Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to PCT/JP2015/068565 priority Critical patent/WO2016208078A1/en
Publication of WO2016208078A1 publication Critical patent/WO2016208078A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms

Definitions

  • 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, and an optical apparatus in which the device is mounted.
  • 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.
  • a light adjustment element is fixed on the optical path but also a configuration in which the light adjustment element is retracted from the optical path is required, it is mounted as a light adjustment device that combines the light adjustment element and the moving mechanism. ing.
  • Patent Document 1 discloses a downsized light adjusting device.
  • 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.
  • an electromagnetic drive device 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.
  • the light adjustment device 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, it is extremely small, and in the assembly process, when an operator assembles directly, it is an operation using a magnifying glass or the like like a precision instrument such as a watch, and positioning of each small component is complicated. It has become. Therefore, a structure that can be engaged at an accurate position and orientation when assembled is desired.
  • the present invention reduces the diameter of the optical device by providing a drive coil for rotating the light adjusting element disposed on the optical path of the optical device in the axial direction of the rotation shaft of the portion supporting the light adjusting device. It is an object of the present invention to provide a light adjusting device that has a structure that can be realized and that can be easily positioned when assembled, and an optical apparatus on which the light adjusting device is mounted.
  • a light adjusting device includes a light adjusting unit that acts on at least one optical path, a rotating shaft provided in the light adjusting unit, and the rotating shaft.
  • a light adjusting device including a magnetic circuit configured to rotate the light adjusting unit, wherein the electromagnetic driving unit includes at least one positioning unit that positions the rotating shaft in a part of the electromagnetic driving unit.
  • the drive coil that rotates the light adjusting element disposed on the optical path of the optical device is erected in the axial direction of the rotation shaft of the portion that supports the light adjusting element to reduce the diameter of the optical device.
  • an optical apparatus equipped with the light adjusting device can be provided.
  • the light adjusting device has a structure that allows easy alignment when assembled.
  • 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.
  • FIG. 3 is a diagram showing the structure of the AA cross section in FIG.
  • FIG. 4 is a diagram illustrating a configuration of a drive power supply unit in the light adjusting device.
  • FIG. 5 is a perspective view showing an insertion portion of an endoscope on which the light adjusting device is mounted.
  • FIG. 6A is a diagram illustrating a cross-sectional shape of a positioning portion.
  • FIG. 6B is a diagram illustrating a cross-sectional shape of a first modification of the positioning portion.
  • FIG. 6C is a diagram illustrating a cross-sectional shape of a second modification of the positioning portion.
  • FIG. 6D is a diagram illustrating a cross-sectional shape of a third modification of the positioning portion.
  • FIG. 7 is a perspective view showing an external configuration of the light adjusting device according to the second embodiment.
  • FIG. 8 is a diagram illustrating an external configuration viewed from the side of the light adjusting device.
  • FIG. 9 is a diagram illustrating an external configuration viewed from a side surface of the light adjusting device according to the third embodiment.
  • FIG. 10 is a view showing the structure of the BB cross section in FIG.
  • FIG. 1 is a diagram illustrating an exploded configuration of the light adjusting device
  • FIG. 2 is a diagram illustrating an external configuration of the light adjusting device
  • FIG. 3 is a diagram illustrating a structure taken along the line AA in FIG.
  • the optical axis direction of the optical path is the Z-axis direction
  • the directions orthogonal to the Z-axis direction and orthogonal to each other are the X-axis direction and the Y-axis direction.
  • the light adjusting device 1 of the present embodiment includes a drive mechanism 9 that is a rotating shaft holding member, and an electromagnetic drive source [electromagnetic drive unit] 13 that stands and is joined to both side surfaces of the drive mechanism 9 to generate a magnetic circuit.
  • the drive mechanism 9 has a spacer 4 disposed on the rear side of the lower substrate 2 of the flat plate, a swinging portion (blade portion) 5 disposed so as to be rotatable forward, and in parallel with the lower substrate 2 above it.
  • the upper substrate 3 is placed so as to be integrated.
  • the side where the swinging part 5 of the drive mechanism 9 protrudes is referred to as a front surface, and both sides of the front surface are referred to as side surfaces.
  • the oscillating portion 5 has an arm shape, and a rotary shaft 6 is inserted through one end thereof, and a hole 7 to which a light adjusting portion (light adjusting element) 8 is attached is formed at the other end.
  • the light adjusting unit 8 is a diaphragm, a shutter, a lens, a light shielding plate, a filter, or the like, and may be fixed in the hole 7 or may be detachably attached.
  • the oscillating portion 5 of this embodiment rotates in a direction M (X-axis-Y-axis direction) orthogonal to the optical axis direction.
  • the rotary shaft 6 is formed in a cylindrical shape using a hard magnetic material such as ferrite or neodymium.
  • a rotating shaft 6 a extending downward is rotatably fitted in a shaft supporting hole 2 a described later of the lower substrate 2, and a rotating shaft 6 b extending upward is mounted on a shaft supporting hole described later of the upper substrate 3.
  • 3b is rotatably fitted, and the central axis is the Z-axis direction.
  • the rotating shaft 6 is divided into two by a plane passing through the central axis of the cylindrical shape, and the N pole is magnetized in one semi-cylindrical shape, and the S pole is magnetized in the other semi-cylindrical shape.
  • the rotary shaft 6a and the rotary shaft 6b do not necessarily have to be produced as one component part with the same shape (same diameter), but when produced separately, the electromagnetic drive source 13 of the present embodiment and In order to combine them, it is necessary to arrange the polarities (N pole and S pole) in the same direction at the top and bottom when they are attached to the rocking portion 5.
  • the lower substrate 2 is made of a hard material and is formed into a flat rectangular shape with four corners chamfered.
  • the lower substrate 2 is fitted to the rotary shaft 6a to support the swinging portion 5 in a rotatable manner.
  • the hole 2a is opened.
  • the upper substrate 3 is also made of a hard material and is formed into a flat rectangular shape with four corners chamfered, and is used for a shaft support for fitting the rotating shaft 6b to rotatably support the swinging portion 5.
  • the hole 3b is opened.
  • the lower substrate 2 and the upper substrate 3 have the same shape, but this is a design matter, and the shape and size may be changed as appropriate according to the installation space of the equipment to be mounted. .
  • a groove 3a [second positioning portion] into which a positioning portion 12 described later is fitted is formed on both side surfaces.
  • channel 3a is formed so that the inner wall surface of a groove
  • a U-shaped spacer 4 is fixed to the rear of the lower substrate 2.
  • the spacer 4 defines the distance between the lower substrate 2 and the upper substrate 3 and is formed to be at least higher than the thickness of the swinging portion 5. This interval is not particularly limited as long as there is a distance that allows the swinging portion 5 to smoothly rotate without rattling.
  • the ends of the U-shaped protruding both sides of the spacer 4 function as stoppers 4 a and 4 b that define the rotation range (rotation angle) or stop position of the swinging portion 5 by the swinging portion 5 being applied. That is, in the present embodiment, the position where the swinging portion 5 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 positions of the two optical paths (optical axes) that are light-adjusted by the light adjusting device 1 are defined by the stop position of the hole 7 of the swinging unit 5.
  • the optical path of the light beam to be optically adjusted is that the swinging unit 5 is in the first position. Or when it stops at the 2nd position, it will be a position which passes hole 7.
  • the optical path passing through the hole 7 is defined as the first optical path, and the optical path passing through the hole 7 when stopped at the second position. Is the second optical path.
  • 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 9. 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 of 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.
  • 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 engaged and bonded to the side surface of the drive mechanism 9 in the direction (Z-axis direction) where the end portions 11 a and 11 b on both sides of the yoke 11 open are orthogonal to the upper surface of the upper substrate 3.
  • the gap between the end 11a and the end 11b is a so-called gap through which magnetic flux passes.
  • the rotary shaft 6 is taken into the magnetic field forming region (gap) 13a by the yoke 11.
  • the electromagnetic drive source 13 is erected in a direction (Z-axis direction) orthogonal to the upper surface (XY plane) of the upper substrate 3 as a reference.
  • the present invention is not limited to this, and may be within an angle range of 0 ° ⁇ ⁇ 180 ° with the XY plane being 0 °.
  • 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.
  • the U-shape may be deformed if the yoke 11 can be deformed.
  • a positioning portion [first positioning portion] 12 having a square protrusion shape is provided in a joint surface that joins the side surface of the drive mechanism 9 on the inner surface of the yoke 11.
  • the positioning portion 12 has a rectangular cross section, and the lower side is formed on an inclined surface for easy assembly. Of course, the inclined surface is not essential.
  • the positioning portion 12 is fitted into grooves 3 a [second positioning portion] provided on both side surfaces of the upper substrate 3 when the electromagnetic drive source 13 is erected. It is locked and fixed with an adhesive or the like.
  • the positioning part 12 and the groove 3a, which are formed in the joint surfaces of each other, are defined as side positioning parts [side positioning parts].
  • the extending direction of the groove 3a that is, the surface direction of the groove wall surface is the Z-axis direction, so that the yoke 11 is erected in a direction perpendicular to the drive mechanism 9 (the upper surface of the upper substrate 3). Further, when the yoke 11 is attached with an inclination of an arbitrary angle, the inner wall surface of the groove 3a is formed to have the inclination. That is, the drive mechanism 9 is positioned at an accurate position in the X-axis direction and at an arbitrary angle of inclination simply by fitting and locking the positioning portion 12 in the groove 3a.
  • both side surfaces of the positioning portion 12 are along the Z-axis direction (the optical axis direction of the light beam or the extending direction of the optical path). It is necessary to set the angle.
  • channel 3a is the structure provided in the both sides of the upper board
  • the electromagnetic drive source is compared with a configuration in which the fitting portion is not provided. Even when a load in the X-axis direction or a tensile load is applied to 13, the joined state can be maintained.
  • FIG. 4 shows a configuration of a drive power supply unit that supplies drive power to the coil 14 of the electromagnetic drive source 13.
  • the drive power supply unit includes a changeover switch 21 connected to both ends of the coil 14, and a DC power supply 22 that supplies DC power to the changeover switch 21.
  • the changeover switch 21 switches the polarity (positive / negative) of the DC power supplied from the DC power supply 22 as appropriate and applies it to the coil 14. Note that the DC power switching operation of the selector switch 21 is executed in accordance with 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 a magnetic flux H to pass therethrough to form a magnetic field in the magnetic field forming region 13a between the end portions 11a and 11b, and this magnetic field is applied to the rotating shaft 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 rotating shaft 6 (N pole, S pole) are the same, a repulsive force is generated, causing the rotating shaft 6 to rotate halfway to the opposite side. Further, when the polarity of the magnetic field and the polarity of the rotary shaft 6 are different, an attractive force is generated, and the rotary shaft 6 does not rotate and maintains that state.
  • the rotation of the rotating shaft 6 is in a state where the swinging portion 5 is rotated and the swinging portion 5 is applied to one of the stoppers 4a and 4b described above and stopped.
  • the first optical path and the second optical path where the light adjustment is performed are switched by the rotation of the swinging unit 5.
  • the electromagnetic drive source of the drive mechanism that moves the light adjustment unit in the direction intersecting the optical path using electromagnetic force is erected in the direction along the optical path. Downsizing in the direction (radial direction) that intersects with can be realized.
  • a first positioning portion (protrusion) and a second positioning portion (groove in a predetermined direction) are formed in advance at a location where the yoke 11 of the electromagnetic drive source 13 and the drive mechanism 9 are joined during assembly.
  • the electromagnetic drive source 13 can be erected on the drive mechanism 9 at an accurate position and posture with respect to the rotating shaft 6 (inclination of the yoke 11) by fitting and locking each positioning portion during assembly. it can. By simply applying the adhesive and fitting the two positioning parts, alignment and assembly are completed, so that the assembly work is simplified and the skill level is not limited.
  • the positioning portion 12 including one protrusion is formed on one side surface, but a plurality of positioning portions 12 may be formed.
  • the groove 3a which is the second positioning part, in the lower substrate 2 and the upper substrate 3, it is possible to perform alignment by forming two protrusions on one side surface.
  • the electromagnetic drive source 13 is attached with an inclination with respect to the drive mechanism 9, it passes through the two protrusions simply by being fitted, and therefore the angle setting is easy and useful.
  • the alignment portion is fitted with unevenness, the strength can be increased with respect to peeling, positional deviation, and the like after bonding, as compared with a structure in which flat surfaces are bonded to each other.
  • 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.
  • the light adjusting device 1 of the present embodiment is mounted on an imaging optical system disposed in an insertion portion 31 of an endoscope 30 that is an observation device in a lumen or a lumen. be able to. It arrange
  • the light adjusting unit 8 is an aperture, a shutter, a lens, a light shielding plate, a filter, or the like.
  • the light adjusting unit 8 is rotated by the swing unit 5 so as to switch between the two optical paths.
  • the light adjusting device 1 of the present embodiment can arrange the light adjusting unit 8 on the optical path of the illumination light as well as the optical path of the formed optical image. Switching operation between illumination light shielding and light shielding is possible.
  • the insertion portion 31 has a hard portion 33 disposed at the distal end, and a bending portion 32 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 32.
  • a longitudinal direction of the bending portion 32 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 33 so as to stand upright in the optical axis direction L.
  • the hard portion 33 has a cylindrical shape, is provided with an imaging window 34 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 portion 33 and an optical path (first optical path, second optical path) defined in the hole 7 of the swinging portion 5. It is incorporated so that at least one of them matches.
  • the light adjusting unit 8 described above is attached to the hole 7 of the swinging unit 5.
  • the light adjusting device 1 is provided in the hard portion 33 is described. However, as long as the light image is transmitted through the hole 7 of the swinging portion 5, the arrangement is limited to the hard portion 33. Instead, it may be in the operation section provided on the proximal end side of the insertion section (not shown).
  • the electromagnetic drive source 13 is described as being stored in the hard portion 33 in a state of being erected vertically with respect to the drive mechanism 9, when other components become obstacles when stored. It is also possible to set the electromagnetic drive source 13 by tilting as appropriate.
  • FIG. 6A shows a cross-sectional shape of a positioning portion 12a corresponding to the first positioning portion 12 of the first embodiment described above.
  • the positioning part 12a has a rectangular cross-sectional shape.
  • FIG. 6B is a diagram showing a cross-sectional shape of the positioning portion 12b of the first modification.
  • the positioning part 12 b has a cross-sectional shape in which the upper base of the trapezoid is connected to the inner wall surface of the yoke 11. When fitted to the groove side, the projecting lower bottom portion of the positioning portion 12b functions to prevent it from coming out, and the strength can be further increased against peeling or misalignment after bonding.
  • FIG. 6C is a diagram showing a cross-sectional shape of the positioning portion 12c of the second modified example.
  • the positioning portion 12c has a cross-sectional shape protruding in a wedge shape (triangle). Since it is easy to form the positioning portion 12c and the groove fitted therewith, the light adjusting device 1 can be further downsized.
  • FIG. 6D is a diagram showing a cross-sectional shape of the positioning portion 12d of the third modified example.
  • the positioning part 12d has a cross-sectional shape projecting in a semicircle (or bowl shape). Since the positioning portion 12d has a curved side surface, the positioning portion 12d is easily fitted when fitted in the groove 3a.
  • FIG. 7 is a perspective view illustrating an external configuration of the light adjusting device
  • FIG. 8 is a diagram illustrating an external configuration viewed from the side of the light adjusting device.
  • 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 40 of the present embodiment includes a drive mechanism 44 and an electromagnetic drive source 41 that is bonded and erected on both side surfaces of the drive mechanism 44.
  • the drive mechanism 44 is configured integrally by disposing the spacer 4 and the swinging portion (blade portion) 5 on the lower substrate 42 of the flat plate, and placing the upper substrate 3 thereon.
  • the electromagnetic drive source 41 includes a U-shaped yoke 43 and a coil 14. The coil 14 is wound around the center of the U-shaped bottom of the yoke 43.
  • the lower substrate 42 is formed with a positioning portion [third positioning portion] 42a protruding in a convex shape on both side surfaces.
  • a groove 43c [fourth positioning portion] that fits with the positioning portion 42a is formed on the end surfaces of both end portions 43a and 43b of the yoke 43.
  • the depth of the groove 43c is formed to be shallower than the thickness of the positioning portion 42a, and when fitted, the both end portions 43a and 43b are floated from the bottom surface of the positioning portion 42a by a distance t.
  • the yoke 43 when the groove 43c of the yoke 43 is fitted into the positioning portion 42a of the lower substrate 42 during assembly, the yoke 43 is positioned not only in the X-axis direction but also in the Z-axis direction.
  • the positioning portion 42a and the groove 43c constitute a lower surface positioning portion. That is, the third positioning portion and the fourth positioning portion become the lower surface positioning portion.
  • the yoke 43 is erected in the vertical direction with respect to the drive mechanism 44 (the upper surface of the upper substrate 3). Further, when the yoke 43 is attached with an inclination of an arbitrary angle, the side surface of the positioning portion 42a is formed to have the inclination. That is, the electromagnetic drive source 41 is positioned by the drive mechanism 44 at an accurate position in the X-axis direction and at an arbitrary angle of inclination simply by fitting and locking the positioning portion 42a into the groove 43c.
  • channel 43c is the structure provided in the both sides
  • the side portions of the lower substrate 42 are not only positioned but also vertically (Z-axis direction) by fitting the positioning portions to each other. Can be easily positioned. Moreover, since the depth of the groove 43c is formed shallower than the thickness of the positioning portion 42a, the bottom of the groove 43c can be surely fitted when fitted.
  • FIG. 9 is a diagram showing an external configuration viewed from the side of the light adjusting device according to the third embodiment
  • FIG. 10 is a diagram showing a structure of a BB cross section in FIG.
  • the same reference numerals are assigned to the same components as those in the first and second embodiments described above, and detailed description thereof is omitted.
  • the side surface positioning portion is a combination of the positioning portion 12 [first positioning portion] and the groove 3a [second positioning portion] in the first embodiment described above, and the positioning portion 42a in the second embodiment.
  • This is a configuration in which both of the positioning portions of the [third positioning portion] and the lower surface positioning portion by the combination of the groove 43c [fourth positioning portion] are provided.
  • the positioning portion 12 provided on the yoke 11 is fitted into the groove 3 a of the upper substrate 3 as a side surface positioning portion. Further, the groove 11 c of the yoke 11 is fitted into the positioning portion 42 a of the lower substrate 42 as the lower surface positioning portion.
  • the electromagnetic drive source can be attached at a predetermined position with respect to the rotating shaft 6 simply by fitting the positioning portions to each other during assembly.
  • the positional accuracy is increased only by being fitted at the time of assembly, and durability against damage such as positional deviation and peeling after assembly is increased.
  • the electromagnetic drive source can be erected at a desired angle with respect to the drive mechanism, and the form can be changed according to the installation space of the optical equipment to be mounted.
  • intersects an optical path is realizable.
  • annular grooves are formed on both surfaces of the swinging portion 5 around the rotation shaft 6, and the same annular groove is formed on the lower substrate 2 and the upper substrate 3 so as to face these annular grooves. If a bearing structure is formed by forming and inserting a hard sphere between each annular groove, the resistance loss can be reduced and the rotation can be performed more smoothly.

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Abstract

Light adjustment devices are small, and positioning the small structural components therein during assembly is complicated. A demand exists for a structure allowing engagement in accurate positions and orientations during installation. In a light adjustment device of the present invention, a first positioning portion (protuberance) and a second positioning portion (predetermined-direction groove) are formed in advance in a location where the yoke of an electromagnetic drive source and a drive mechanism are joined together, and the positioning portions are fitted and locked together during installation, whereby the electromagnetic drive source can be provided upright on the drive mechanism in an accurate position and at the desired slant.

Description

光調節装置及び光調節装置を搭載する光学機器Light adjusting device and optical apparatus equipped with light adjusting device
　本発明は、光路を透過する光束に作用する光調節素子を光路上に挿脱する光調節装置、当該装置を搭載する光学機器に関する。 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, and an optical apparatus in which the device is mounted.
　一般に、絞りやフィルタ等として知られる光調節素子は、光学機器の光路上に配置されて、通過する光束に対し、それぞれに目的に合った作用を及ぼしている。光学機器によっては光調節素子を光路上に固定されている形態だけではなく、光路上から退避させる形態も必要とされる場合には、光調節素子と移動機構を組み合わせた光調節装置として搭載している。 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 adjustment element is fixed on the optical path but also a configuration in which the light adjustment element is retracted from the optical path is required, it is mounted as a light adjustment device that combines the light adjustment element and the moving mechanism. ing.
　光学機器として、例えば、医療用又は工業用に用いられる内視鏡の挿入部に光調節装置を搭載する場合には、小型化が要求される。光学機器に搭載される光調節装置の一例として、特許文献１には、小型化された光調節装置が開示されている。 For example, when an optical adjustment device is mounted on an insertion portion of an endoscope used for medical or industrial purposes as an optical device, 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.
特開平９－２２０４２号公報Japanese Patent Laid-Open No. 9-22042
　光調節装置の小型化には、採用した構造によって、光軸方向（厚み方向）及び／又は光軸と交差する径方向（平面方向）に対して、それぞれ小型化することが可能である。搭載対象が内視鏡の挿入部のように、操作部から光軸に沿って延出する長尺な形状であれば、光軸方向に小型化を図るよりは、径方向に小型化所謂、細径化を図る方がより強く要望されている。 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.
　前述した特許文献１では、撮影レンズの周囲を取り囲むように環状ヨークを配置し、その環状ヨークに巻き付けたコイルにより発生させた電磁力をシャッタ駆動源として用いる電磁駆動装置が提案されている。この電磁駆動装置は、撮影レンズを取り囲むように、シャッタ駆動源を配置したことを技術的特徴としている。このような構成は、厚み方向に対して小型化を実現できるが、撮影レンズの外周側にヨークとコイルを配置するスペースを確保する必要が有るため、径方向に対して小型化を実現するには、撮影レンズの径に影響を与えるなど制約が多くなり不向きである。 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.
　また、光調節装置が搭載される機器が例えば、内視鏡の挿入部先端で、その外径が数ｍｍ～１ｃｍ程度であった場合には、光調節装置は当然、それ以下の大きさとなる。即ち、きわめて小型であり、組み立工程において、作業者が直視で組み立てる場合には、時計等の精密機器と同様に拡大鏡等を用いた作業となり、小型の各構成部品の位置決めが煩雑な作業となっている。そのため、組み付けた際に正確な位置や向きで係合できる構造が望まれている。 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, it is extremely small, and in the assembly process, when an operator assembles directly, it is an operation using a magnifying glass or the like like a precision instrument such as a watch, and positioning of each small component is complicated. It has become. Therefore, a structure that can be engaged at an accurate position and orientation when assembled is desired.
　そこで本発明は、光学機器の光路上に配置される光調節素子を回動させる駆動コイルが、光調節素子を支持する部位の回転軸の軸方向に立設されて光学機器の細径化を実現し、且つ組み付ける際の位置合わせが容易な構造を有する光調節装置及びその光調節装置を搭載する光学機器を提供することを目的とする。 In view of this, the present invention reduces the diameter of the optical device by providing a drive coil for rotating the light adjusting element disposed on the optical path of the optical device in the axial direction of the rotation shaft of the portion supporting the light adjusting device. It is an object of the present invention to provide a light adjusting device that has a structure that can be realized and that can be easily positioned when assembled, and an optical apparatus on which the light adjusting device is mounted.
　上記目的を達成するために、本発明に従う実施形態の光調節装置は、少なくとも１つの光路に作用する光調節部と、前記光調節部に設けられた回転軸と、前記回転軸を介して前記光調節部を回転させる磁気回路を構成する電磁駆動部と、を有する光調節装置であって、　前記電磁駆動部の一部に、前記回転軸との位置決めを行う少なくとも一つの位置決め部を有する。 In order to achieve the above object, a light adjusting device according to an embodiment of the present invention includes a light adjusting unit that acts on at least one optical path, a rotating shaft provided in the light adjusting unit, and the rotating shaft. A light adjusting device including a magnetic circuit configured to rotate the light adjusting unit, wherein the electromagnetic driving unit includes at least one positioning unit that positions the rotating shaft in a part of the electromagnetic driving unit.
　本発明によれば、光学機器の光路上に配置される光調節素子を回動させる駆動コイルが、光調節素子を支持する部位の回転軸の軸方向に立設されて光学機器の細径化を実現し、且つ組み付ける際の位置合わせが容易な構造を有する光調節装置及びその光調節装置を搭載する光学機器を提供することができる。 According to the present invention, the drive coil that rotates the light adjusting element disposed on the optical path of the optical device is erected in the axial direction of the rotation shaft of the portion that supports the light adjusting element to reduce the diameter of the optical device. And an optical apparatus equipped with the light adjusting device can be provided. The light adjusting device has a structure that allows easy alignment when assembled.
図１は、第１の実施形態に係る光調節装置を示す分解構成図である。FIG. 1 is an exploded configuration diagram illustrating the light adjusting device according to the first embodiment. 図２は、光調節装置の外観構成を示す斜視図である。FIG. 2 is a perspective view showing an external configuration of the light adjusting device. 図３は、図２におけるＡ－Ａ断面の構造を示す図である。FIG. 3 is a diagram showing the structure of the AA cross section in FIG. 図４は、光調節装置における駆動電源部の構成を示す図である。FIG. 4 is a diagram illustrating a configuration of a drive power supply unit in the light adjusting device. 図５は、光調節装置が搭載される内視鏡の挿入部を示す斜視図である。FIG. 5 is a perspective view showing an insertion portion of an endoscope on which the light adjusting device is mounted. 図６Ａは、位置決め部位の断面形状を示す図である。FIG. 6A is a diagram illustrating a cross-sectional shape of a positioning portion. 図６Ｂは、位置決め部位の第１の変形例の断面形状を示す図である。FIG. 6B is a diagram illustrating a cross-sectional shape of a first modification of the positioning portion. 図６Ｃは、位置決め部位の第２の変形例の断面形状を示す図である。FIG. 6C is a diagram illustrating a cross-sectional shape of a second modification of the positioning portion. 図６Ｄは、位置決め部位の第３の変形例の断面形状を示す図である。FIG. 6D is a diagram illustrating a cross-sectional shape of a third modification of the positioning portion. 図７は、第２の実施形態に係る光調節装置の外観構成を示す斜視図である。FIG. 7 is a perspective view showing an external configuration of the light adjusting device according to the second embodiment. 図８は、光調節装置の側面から見た外観構成を示す図である。FIG. 8 is a diagram illustrating an external configuration viewed from the side of the light adjusting device. 図９は、第３の実施形態に係る光調節装置の側面から見た外観構成を示す図である。FIG. 9 is a diagram illustrating an external configuration viewed from a side surface of the light adjusting device according to the third embodiment. 図１０は、図９におけるＢ－Ｂ断面の構造を示す図である。FIG. 10 is a view showing the structure of the BB cross section in FIG.
　以下、図面を参照して本発明の実施形態について詳細に説明する。　
［第１の実施形態］
　第１の実施形態に係る光調節装置について説明する。　
　図１は、光調節装置の分解構成を示す図、図２は、光調節装置の外観構成を示す図及び、図３は、図２におけるＡ－Ａ断面の構造を示す図である。以下の各実施形態の説明において、図２に示すように、光路の光軸方向をＺ軸方向とし、Ｚ軸方向と共に直交し、且つ互いに直交する方向をＸ軸方向及びＹ軸方向とする。 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 a diagram illustrating an exploded configuration of the light adjusting device, FIG. 2 is a diagram illustrating an external configuration of the light adjusting device, and FIG. 3 is a diagram illustrating a structure taken along the line AA in FIG. In the following description of each embodiment, as shown in FIG. 2, the optical axis direction of the optical path is the Z-axis direction, and the directions orthogonal to the Z-axis direction and orthogonal to each other are the X-axis direction and the Y-axis direction.
　本実施形態の光調節装置１は、回転軸保持部材である駆動機構９及び、この駆動機構９の両側面に接合して立設され、磁気回路を生成する電磁駆動源［電磁駆動部］１３を有する。駆動機構９は、平板の下側基板２上の後方にスペーサ４を配置し、前方に回動可能に揺動部（羽根部）５を配置して、その上方に下側基板２と平行になるように上側基板３を載置して、一体的に構成される。ここでは、駆動機構９の揺動部５が張り出した側を正面とし、その正面の両側を側面と称している。この揺動部５は、アーム形状を成し、一端には回転軸６が貫通して嵌め込まれ、他端には光調節部（光調節素子）８が取り付けられる孔７が形成されている。光調節部８は、絞り、シャッタ、レンズ、遮光板又はフィルタ等であり、孔７内に固定されてもよいし、着脱可能に取り付ける構成であってもよい。本実施形態の揺動部５は、光軸方向と直交する方向Ｍ（Ｘ軸－Ｙ軸方向）に回動する。 The light adjusting device 1 of the present embodiment includes a drive mechanism 9 that is a rotating shaft holding member, and an electromagnetic drive source [electromagnetic drive unit] 13 that stands and is joined to both side surfaces of the drive mechanism 9 to generate a magnetic circuit. Have The drive mechanism 9 has a spacer 4 disposed on the rear side of the lower substrate 2 of the flat plate, a swinging portion (blade portion) 5 disposed so as to be rotatable forward, and in parallel with the lower substrate 2 above it. The upper substrate 3 is placed so as to be integrated. Here, the side where the swinging part 5 of the drive mechanism 9 protrudes is referred to as a front surface, and both sides of the front surface are referred to as side surfaces. The oscillating portion 5 has an arm shape, and a rotary shaft 6 is inserted through one end thereof, and a hole 7 to which a light adjusting portion (light adjusting element) 8 is attached is formed at the other end. The light adjusting unit 8 is a diaphragm, a shutter, a lens, a light shielding plate, a filter, or the like, and may be fixed in the hole 7 or may be detachably attached. The oscillating portion 5 of this embodiment rotates in a direction M (X-axis-Y-axis direction) orthogonal to the optical axis direction.
　回転軸６は、フェライトやネオジム等の硬質磁性材料を用いて、円柱形状に形成される。下側に延出する回転軸６ａが下側基板２の後述する軸支用孔２ａに回動可能に嵌合し、上側に延出する回転軸６ｂが上側基板３の後述する軸支用孔３ｂに回動可能に嵌合され、中心軸がＺ軸方向となっている。回転軸６は、円柱形状の中心軸を通る平面で２分されて、一方の半円柱形状にＮ極が帯磁され、他方の半円柱形状にＳ極が帯磁されている。尚、回転軸６ａと回転軸６ｂは、必ずしも同一形状（同一径）で１個の構成部位として作製される必要は無いが、別個に作成された場合に、本実施形態の電磁駆動源１３と組み合わせるためには、揺動部５に取り付ける際に、上下で極性（Ｎ極、Ｓ極）を同じ向きに揃えて配置する必要がある。 The rotary shaft 6 is formed in a cylindrical shape using a hard magnetic material such as ferrite or neodymium. A rotating shaft 6 a extending downward is rotatably fitted in a shaft supporting hole 2 a described later of the lower substrate 2, and a rotating shaft 6 b extending upward is mounted on a shaft supporting hole described later of the upper substrate 3. 3b is rotatably fitted, and the central axis is the Z-axis direction. The rotating shaft 6 is divided into two by a plane passing through the central axis of the cylindrical shape, and the N pole is magnetized in one semi-cylindrical shape, and the S pole is magnetized in the other semi-cylindrical shape. The rotary shaft 6a and the rotary shaft 6b do not necessarily have to be produced as one component part with the same shape (same diameter), but when produced separately, the electromagnetic drive source 13 of the present embodiment and In order to combine them, it is necessary to arrange the polarities (N pole and S pole) in the same direction at the top and bottom when they are attached to the rocking portion 5.
　下側基板２は、硬質材料を用いて、平坦で四隅が面取りされた矩形形状に形成され、回転軸６ａと嵌合して、揺動部５を回動可能に支持するための軸支用孔２ａが開口されている。同様に、上側基板３も硬質材料を用いて、平坦で四隅が面取りされた矩形形状に形成され、回転軸６ｂと嵌合して揺動部５を回動可能に支持するための軸支用孔３ｂが開口されている。本実施形態では、下側基板２と上側基板３は、同じ形状であるが、これは設計事項であり、搭載させる機器の設置スペースに合わせて、適宜、形状や大きさを変更してもよい。さらに、両側面には、後述する位置決め部位１２が嵌合する溝３ａ［第２の位置決め部位］が形成されている。尚、溝３ａは、電磁駆動源１３が傾斜して取り付けられる場合には、溝の内壁面が、その傾斜角度に沿った方向に延伸するように形成されている。 The lower substrate 2 is made of a hard material and is formed into a flat rectangular shape with four corners chamfered. The lower substrate 2 is fitted to the rotary shaft 6a to support the swinging portion 5 in a rotatable manner. The hole 2a is opened. Similarly, the upper substrate 3 is also made of a hard material and is formed into a flat rectangular shape with four corners chamfered, and is used for a shaft support for fitting the rotating shaft 6b to rotatably support the swinging portion 5. The hole 3b is opened. 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 may be changed as appropriate according to the installation space of the equipment to be mounted. . Furthermore, a groove 3a [second positioning portion] into which a positioning portion 12 described later is fitted is formed on both side surfaces. In addition, the groove | channel 3a is formed so that the inner wall surface of a groove | channel may extend | stretch in the direction along the inclination angle, when the electromagnetic drive source 13 is inclined and attached.
　下側基板２上の後方には、Ｕ字形状のスペーサ４が固定されている。スペーサ４は、下側基板２と上側基板３との間隔を規定し、少なくとも揺動部５の厚みよりも高くなるように形成されている。この間隔は、揺動部５が、がたつき無く円滑に回動することができる距離があれば、特に限定されるものではない。 A U-shaped spacer 4 is fixed to the rear of the lower substrate 2. The spacer 4 defines the distance between the lower substrate 2 and the upper substrate 3 and is formed to be at least higher than the thickness of the swinging portion 5. This interval is not particularly limited as long as there is a distance that allows the swinging portion 5 to smoothly rotate without rattling.
　スペーサ４のＵ字形状の張り出した両側の端部は、揺動部５の当てつけにより、揺動部５の回動範囲（回動角度）又は停止位置を規定するストッパ４ａ，４ｂとして機能する。即ち、本実施形態では、揺動部５が、ストッパ４ａに当てつけられている位置を第１の停止位置とし、ストッパ４ｂに当てつけられている位置を第２の停止位置とする。揺動部５の孔７の停止位置により、光調節装置１により光調節される２つの光路（光軸）の位置が規定される。即ち、本実施形態では、揺動部５に対する位置センサと回動位置制御を行う構成を有していない構造であるため、光調節される光束の光路は、揺動部５が第１の位置又は第２の位置に停止している時に、孔７を通過する位置となる。ここでは、揺動部５が、第１の位置に停止している時に、孔７を通過する光路を第１の光路とし、第２の位置に停止している時に、孔７を通過する光路を第２の光路とする。 The ends of the U-shaped protruding both sides of the spacer 4 function as stoppers 4 a and 4 b that define the rotation range (rotation angle) or stop position of the swinging portion 5 by the swinging portion 5 being applied. That is, in the present embodiment, the position where the swinging portion 5 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 positions of the two optical paths (optical axes) that are light-adjusted by the light adjusting device 1 are defined by the stop position of the hole 7 of the swinging unit 5. That is, in the present embodiment, since the position sensor for the swinging unit 5 and the structure for performing the rotational position control are not provided, the optical path of the light beam to be optically adjusted is that the swinging unit 5 is in the first position. Or when it stops at the 2nd position, it will be a position which passes hole 7. Here, when the swinging portion 5 is stopped at the first position, the optical path passing through the hole 7 is defined as the first optical path, and the optical path passing through the hole 7 when stopped at the second position. Is the second optical path.
　本実施形態の電磁駆動源１３は、Ｕ字形状を成し、開口する両端が駆動機構９の両側面に掛かるように接合され立設されている。この接合の一つの方法として、互いの接合面に接着等を塗布し接着する。電磁駆動源１３は、鉄等の導電体材料や透磁性（軟質磁性）材料を用いてＵ字形状に形成された透磁性部材、所謂ヨーク１１に、コイル１４が巻き付けられた構成である。 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 9. 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 of a U-shape using a conductive material such as iron or a magnetically permeable (soft magnetic) material.
　コイル１４は、図２に示すヨーク１１のＵ字形状の底部中央で、上側基板３の上面と対向する位置に巻回されるように設けられている。但し、コイル１４は、ヨーク１１上に設けられて磁束を発生させればよいため、その配置箇所は、上側基板３の上面との対向位置に限定されるものではない。 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.
　電磁駆動源１３は、ヨーク１１の開口する両側の端部１１ａ，１１ｂが、上側基板３の上面と直交する方向（Ｚ軸方向）で、駆動機構９の側面に係合して接着される。端部１１ａと端部１１ｂの空隙は磁束が通過する、所謂ギャップである。この時、ヨーク１１による磁界形成領域（ギャップ）１３ａ内に、回転軸６が取り込まれた形態となっている。本実施形態では、上側基板３の上面（Ｘ－Ｙ平面）を基準として、直交する方向（Ｚ軸方向）に電磁駆動源１３は立設している。 The electromagnetic drive source 13 is engaged and bonded to the side surface of the drive mechanism 9 in the direction (Z-axis direction) where the end portions 11 a and 11 b on both sides of the yoke 11 open are orthogonal to the upper surface of the upper substrate 3. 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 6 is taken into the magnetic field forming region (gap) 13a by the yoke 11. In the present embodiment, the electromagnetic drive source 13 is erected in a direction (Z-axis direction) orthogonal to the upper surface (XY plane) of the upper substrate 3 as a reference.
　しかし、これに限定されるものではなく、Ｘ－Ｙ平面を０°として、０°＜θ＜１８０°までの角度範囲内であればよい。但し、径方向の小型化として効果を得るためには、揺動部５が回動した際に、その外先端が描く円弧の外周ラインから電磁駆動源１３の頂部がはみ出さない範囲内であり、且つ電磁駆動源１３が光調節する光路に入り込まない角度となる。その際に、ヨーク１１が光路へ侵入している場合に、そのヨーク１１部分の変形が可能であれば、Ｕ字形状を変形させてもよい。 However, the present invention is not limited to this, and may be within an angle range of 0 ° <θ <180 ° with the XY plane being 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.
　ヨーク１１の内側面で駆動機構９の側面と接合する接合面内に、角形の突起形状の位置決め部位［第１の位置決め部位］１２が設けられている。この位置決め部位１２は、図６Ａに示すように断面が矩形形状であり、組み立てやすくするために、下側が傾斜面に形成されている。勿論、傾斜面は必須ではない。位置決め部位１２は、図１乃至図３に示すように、電磁駆動源１３を立設する際に、上側基板３の両側面に設けられた溝３ａ［第２の位置決め部位］に嵌合されて係止されて、接着剤等で固定される。互いの接合面内に形成される、位置決め部位１２と溝３ａを側面位置決め部位［側面位置決め部］とする。 A positioning portion [first positioning portion] 12 having a square protrusion shape is provided in a joint surface that joins the side surface of the drive mechanism 9 on the inner surface of the yoke 11. As shown in FIG. 6A, the positioning portion 12 has a rectangular cross section, and the lower side is formed on an inclined surface for easy assembly. Of course, the inclined surface is not essential. As shown in FIGS. 1 to 3, the positioning portion 12 is fitted into grooves 3 a [second positioning portion] provided on both side surfaces of the upper substrate 3 when the electromagnetic drive source 13 is erected. It is locked and fixed with an adhesive or the like. The positioning part 12 and the groove 3a, which are formed in the joint surfaces of each other, are defined as side positioning parts [side positioning parts].
　この溝３ａの延伸方向、即ち、溝壁面の面方向をＺ軸方向とすることで、ヨーク１１が駆動機構９（上側基板３の上面）に対して垂直方向に立設される。さらに、ヨーク１１に任意の角度の傾きを持たせて取り付ける場合には、溝３ａの内壁面がその傾きとなるように形成する。即ち、位置決め部位１２を溝３ａに嵌合させて係止するだけで、Ｘ軸方向における正確な位置で且つ、任意の角度の傾きで、駆動機構９が位置決めされる。尚、溝３ａの内壁面に角度を持たせて位置決め部位１２と嵌合する構造においては、位置決め部位１２の両側面がＺ軸方向（光束の光軸方向又は、光路の延伸方向）に沿った角度に設定する必要がある。尚、本実施形態では、位置決め部位１２と溝３ａによる嵌合箇所は、上側基板３の両側に設けた構成であるが、少なくとも一方の側面に設けた構成であってもよい。 The extending direction of the groove 3a, that is, the surface direction of the groove wall surface is the Z-axis direction, so that the yoke 11 is erected in a direction perpendicular to the drive mechanism 9 (the upper surface of the upper substrate 3). Further, when the yoke 11 is attached with an inclination of an arbitrary angle, the inner wall surface of the groove 3a is formed to have the inclination. That is, the drive mechanism 9 is positioned at an accurate position in the X-axis direction and at an arbitrary angle of inclination simply by fitting and locking the positioning portion 12 in the groove 3a. In the structure in which the inner wall surface of the groove 3a is fitted with the positioning portion 12 with an angle, both side surfaces of the positioning portion 12 are along the Z-axis direction (the optical axis direction of the light beam or the extending direction of the optical path). It is necessary to set the angle. In addition, in this embodiment, although the fitting location by the positioning part 12 and the groove | channel 3a is the structure provided in the both sides of the upper board | substrate 3, the structure provided in at least one side surface may be sufficient.
　さらに、この位置決め部位１２を溝３ａによる嵌合した状態で、上側基板３とヨーク１１を接着して固定させた構成であれば、この嵌合箇所を設けていない構成に比べて、電磁駆動源１３へ、Ｘ軸方向の負荷や引っ張りの負荷が掛かった場合にも、接合状態を維持することができる。 Further, if the positioning portion 12 is fitted with the groove 3a and the upper substrate 3 and the yoke 11 are bonded and fixed, the electromagnetic drive source is compared with a configuration in which the fitting portion is not provided. Even when a load in the X-axis direction or a tensile load is applied to 13, the joined state can be maintained.
　図４には、電磁駆動源１３のコイル１４に駆動電力を供給する駆動電源部の構成を示している。この駆動電源部は、コイル１４の両端と接続する切換スイッチ２１と、切換スイッチ２１に直流電力を供給する直流電源２２と、で構成される。切換スイッチ２１は、直流電源２２から供給される直流電力の極性（正負）を適宜、切り換えてコイル１４に印加する。尚、切換スイッチ２１の直流電力の切り換え動作は、搭載した機器の操作部から指示に従って実行される。 FIG. 4 shows a configuration of a drive power supply unit that supplies drive power to the coil 14 of the electromagnetic drive source 13. The drive power supply unit includes a changeover switch 21 connected to both ends of the coil 14, and a DC power supply 22 that supplies DC power to the changeover switch 21. The changeover switch 21 switches the polarity (positive / negative) of the DC power supplied from the DC power supply 22 as appropriate and applies it to the coil 14. Note that the DC power switching operation of the selector switch 21 is executed in accordance with an instruction from the operation unit of the mounted device.
　コイル１４は、直流電力を加えられた際に、電磁石として機能し、ヨーク１１に磁束Ｈを与える。Ｕ字形状を成すヨーク１１は、内部に磁束Ｈを通過させて、端部１１ａ，１１ｂ間の磁界形成領域１３ａに磁界を形成し、その磁界を硬質磁性体からなる回転軸６に作用させて、吸引力又は反発力を発生させる。即ち、磁界の極性と回転軸６の極性（Ｎ極、Ｓ極）が同じ場合には、反発力が発生し、回転軸６を反対側に半回転させる。また、磁界の極性と回転軸６の極性の異なる場合には、吸引力が発生し、回転軸６は回転せず、その状態を維持する。 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 a magnetic flux H to pass therethrough to form a magnetic field in the magnetic field forming region 13a between the end portions 11a and 11b, and this magnetic field is applied to the rotating shaft 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 rotating shaft 6 (N pole, S pole) are the same, a repulsive force is generated, causing the rotating shaft 6 to rotate halfway to the opposite side. Further, when the polarity of the magnetic field and the polarity of the rotary shaft 6 are different, an attractive force is generated, and the rotary shaft 6 does not rotate and maintains that state.
　この回転軸６の回転は、揺動部５を回動させて、前述したストッパ４ａ，４ｂの何れかに揺動部５を当てつけて停止した状態となる。揺動部５の回動により、光調節が実施される第１の光路と第２の光路とが切り換えられる。
　本実施形態の光調節装置によれば、電磁力を利用して光調節部を光路と交差する方向に移動する駆動機構の電磁駆動源を、光路に沿った方向に立設することで、光路と交差する方向（径方向）の小型化を実現することができる。 The rotation of the rotating shaft 6 is in a state where the swinging portion 5 is rotated and the swinging portion 5 is applied to one of the stoppers 4a and 4b described above and stopped. The first optical path and the second optical path where the light adjustment is performed are switched by the rotation of the swinging unit 5.
According to the light adjustment device of the present embodiment, the electromagnetic drive source of the drive mechanism that moves the light adjustment unit in the direction intersecting the optical path using electromagnetic force is erected in the direction along the optical path. Downsizing in the direction (radial direction) that intersects with can be realized.
　また、組立時の電磁駆動源１３のヨーク１１と駆動機構９とが接合する箇所に、第１の位置決め部位（突起）と第２の位置決め部位（所定方向の溝）が予め形成されることにより、組み付けの際に互いの位置決め部位を嵌合して係止することで、回転軸６に対する正確な位置且つ姿勢（ヨーク１１の傾き）で駆動機構９に電磁駆動源１３を立設することができる。接着剤を塗布し、２つの位置決め部位を嵌合するだけで、位置合わせと組み立てが完了するため、組み立て作業が簡易となる上、熟練度も問われない。 In addition, a first positioning portion (protrusion) and a second positioning portion (groove in a predetermined direction) are formed in advance at a location where the yoke 11 of the electromagnetic drive source 13 and the drive mechanism 9 are joined during assembly. The electromagnetic drive source 13 can be erected on the drive mechanism 9 at an accurate position and posture with respect to the rotating shaft 6 (inclination of the yoke 11) by fitting and locking each positioning portion during assembly. it can. By simply applying the adhesive and fitting the two positioning parts, alignment and assembly are completed, so that the assembly work is simplified and the skill level is not limited.
　尚、本実施形態では、第１の位置決め部位として、一側面上に１つの突起部からなる位置決め部位１２を形成したが、複数個を形成してもよい。例えば、第２の位置決め部位である溝３ａを下側基板２と上側基板３にそれぞれ設けることにより、一側面に２つの突起部を形成して位置合わせを行うことが可能である。この構成であれば、駆動機構９に対して傾けて電磁駆動源１３を取り付ける場合には、嵌合させるだけで２つの突起部を通過するため、角度設定が容易になり有用である。さらに、位置合わせ部が凹凸で嵌合していることから、平面同士が接着された構造よりも、接着後の剥がれや位置ずれ等に対して強度を高めることができる。 In this embodiment, as the first positioning portion, the positioning portion 12 including one protrusion is formed on one side surface, but a plurality of positioning portions 12 may be formed. For example, by providing the groove 3a, which is the second positioning part, in the lower substrate 2 and the upper substrate 3, it is possible to perform alignment by forming two protrusions on one side surface. With this configuration, when the electromagnetic drive source 13 is attached with an inclination with respect to the drive mechanism 9, it passes through the two protrusions simply by being fitted, and therefore the angle setting is easy and useful. Furthermore, since the alignment portion is fitted with unevenness, the strength can be increased with respect to peeling, positional deviation, and the like after bonding, as compared with a structure in which flat surfaces are bonded to each other.
　本実施形態の光調節装置１は、光学機器の光路上に配置することができる。光路を伝送される光束としては、撮影光学系に結像された光像、照明光、可視光、赤外光又は紫外光等がある。光調節装置１を搭載する光学機器としては、少なくとも撮像装置（撮像光学系）、照明装置、顕微鏡、光学測定装置、光学的読み取り装置（バーコードリーダ等）等が挙げられる。 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.
　本実施形態の光調節装置１は、一例として、図５に示すように、管腔内又は管孔内の観察装置である内視鏡３０の挿入部３１に配置された撮像光学系に搭載することができる。撮像光学系により結像された光像を伝搬する光路上に光調節部８が介在するように配置される。ここで、光調節部８は、絞り、シャッタ、レンズ、遮光板又はフィルタ等である。光調節部８は、揺動部５により、２つの光路間を切り換えるように回動移動される。尚、本実施形態の光調節装置１は、結像された光像の光路だけでなく、照明光の光路上に光調節部８を配置することも可能であり、例えば、シャッタであれば、照明光の照射と遮光との切換操作が可能となる。 For example, as shown in FIG. 5, the light adjusting device 1 of the present embodiment is mounted on an imaging optical system disposed in an insertion portion 31 of an endoscope 30 that is an observation device in a lumen or a lumen. be able to. It arrange | positions so that the light adjustment part 8 may exist on the optical path which propagates the optical image imaged by the imaging optical system. Here, the light adjusting unit 8 is an aperture, a shutter, a lens, a light shielding plate, a filter, or the like. The light adjusting unit 8 is rotated by the swing unit 5 so as to switch between the two optical paths. In addition, the light adjusting device 1 of the present embodiment can arrange the light adjusting unit 8 on the optical path of the illumination light as well as the optical path of the formed optical image. Switching operation between illumination light shielding and light shielding is possible.
　挿入部３１は、先端に硬質部３３が配置され、その基端側に操作者の操作に応じて湾曲する湾曲部３２と、湾曲部３２の基端側に連設される可撓部とを有している。図５においては、湾曲部３２の長手方向を光軸方向Ｌ（Ｚ軸方向）とし、この光軸方向Ｌと直交する径方向（Ｘ軸－Ｙ軸方向）Ｒとすれば、図２に示す上側基板３の上面が径方向Ｒに配置され、且つ電磁駆動源１３が光軸方向Ｌに立設されるように硬質部３３内に組み込まれる。 The insertion portion 31 has a hard portion 33 disposed at the distal end, and a bending portion 32 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 32. Have. In FIG. 5, if the longitudinal direction of the bending portion 32 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 33 so as to stand upright in the optical axis direction L.
　硬質部３３は、円筒形状を成し、先端面に撮像用窓３４が設けられ、内部には撮像素子と撮像光学系などの各種ユニットが収納されている。光調節装置１は、硬質部３３内の撮像光学系に結像された光像の光軸と、揺動部５の孔７に規定された光路（第１の光路、第２の光路）の少なくとも一方が一致するように組み込まれる。揺動部５の孔７には、前述した光調節部８が取り付けられている。ここでは、硬質部３３内に光調節装置１を設けた例を挙げているが、揺動部５の孔７を光像が透過する配置であれば、硬質部３３内への配置に限定されるのではなく、図示しない挿入部の基端側に設けられた操作部内であってもよい。 The hard portion 33 has a cylindrical shape, is provided with an imaging window 34 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 portion 33 and an optical path (first optical path, second optical path) defined in the hole 7 of the swinging portion 5. It is incorporated so that at least one of them matches. The light adjusting unit 8 described above is attached to the hole 7 of the swinging unit 5. Here, an example in which the light adjusting device 1 is provided in the hard portion 33 is described. However, as long as the light image is transmitted through the hole 7 of the swinging portion 5, the arrangement is limited to the hard portion 33. Instead, it may be in the operation section provided on the proximal end side of the insertion section (not shown).
　このように光調節装置１を内視鏡の挿入部３１に組み込むことにより、挿入部３１の長手方向と直交する径方向に小型化することを実現し、挿入部３１の細径化に寄与する。尚、電磁駆動源１３が駆動機構９に対して、垂直に立設する状態で硬質部３３内に収納される例で説明したが、収納する際に他の構成部位が障害となる場合には、適宜、電磁駆動源１３を傾けて設定することも可能である。 As described above, by incorporating the light adjusting device 1 in the insertion portion 31 of the endoscope, it is possible to reduce the size in the radial direction orthogonal to the longitudinal direction of the insertion portion 31 and contribute to the reduction in the diameter of the insertion portion 31. . Although the electromagnetic drive source 13 is described as being stored in the hard portion 33 in a state of being erected vertically with respect to the drive mechanism 9, when other components become obstacles when stored. It is also possible to set the electromagnetic drive source 13 by tilting as appropriate.
　［第１の実施形態の変形例］
　次に、前述した第１の実施形態に係る第１の位置決め部位の変形例について説明する。図６Ａは、前述した第１の実施形態の第１の位置決め部位１２に相当する位置決め部位１２ａの断面形状を示している。位置決め部位１２ａは、矩形の断面形状である。 [Modification of First Embodiment]
Next, a modification of the first positioning portion according to the first embodiment described above will be described. FIG. 6A shows a cross-sectional shape of a positioning portion 12a corresponding to the first positioning portion 12 of the first embodiment described above. The positioning part 12a has a rectangular cross-sectional shape.
　図６Ｂは、第１の変形例の位置決め部位１２ｂの断面形状を示す図である。位置決め部位１２ｂは、台形の上底がヨーク１１の内壁面に繋がった断面形状を有している。溝側と嵌合された際に、位置決め部位１２ｂの張り出した下底部分が抜け出し防止の機能を果たし、接着後の剥がれや位置ずれ等に対して、より強度を高めることができる。 FIG. 6B is a diagram showing a cross-sectional shape of the positioning portion 12b of the first modification. The positioning part 12 b has a cross-sectional shape in which the upper base of the trapezoid is connected to the inner wall surface of the yoke 11. When fitted to the groove side, the projecting lower bottom portion of the positioning portion 12b functions to prevent it from coming out, and the strength can be further increased against peeling or misalignment after bonding.
　図６Ｃは、第２の変形例の位置決め部位１２ｃの断面形状を示す図である。位置決め部位１２ｃは、楔形（三角形）に張り出した断面形状を有している。位置決め部位１２ｃ及び、これと嵌合する溝の形成が容易であるため、更に光調節装置１の小型化を図ることができる。 FIG. 6C is a diagram showing a cross-sectional shape of the positioning portion 12c of the second modified example. The positioning portion 12c has a cross-sectional shape protruding in a wedge shape (triangle). Since it is easy to form the positioning portion 12c and the groove fitted therewith, the light adjusting device 1 can be further downsized.
　図６Ｄは、第３の変形例の位置決め部位１２ｄの断面形状を示す図である。位置決め部位１２ｄは、半円（又は蒲鉾形）に張り出した断面形状を有している。位置決め部位１２ｄは、側面が曲面であるため、溝３ａに嵌合する際に嵌合しやすい。尚、第１乃至第３の変形例の各位置決め部位においては、溝３ａに入る側の端部を丸める又は斜めに切除することにより、嵌合しやすくしてもよい。 FIG. 6D is a diagram showing a cross-sectional shape of the positioning portion 12d of the third modified example. The positioning part 12d has a cross-sectional shape projecting in a semicircle (or bowl shape). Since the positioning portion 12d has a curved side surface, the positioning portion 12d is easily fitted when fitted in the groove 3a. In addition, in each positioning part of the 1st thru | or 3rd modification, you may make it easy to fit by rounding or cutting off the edge part which enters into the groove | channel 3a.
　［第２の実施形態］
　次に第２の実施形態に係る光調節装置について説明する。　
　図７は、光調節装置の外観構成を示す斜視図、図８は、光調節装置の側面から見た外観構成を示す図である。本実施形態の説明において、前述した第１の実施形態と同等の構成部位には同じ参照符号を付して、詳細な説明は省略する。 [Second Embodiment]
Next, the light adjusting device according to the second embodiment will be described.
FIG. 7 is a perspective view illustrating an external configuration of the light adjusting device, and FIG. 8 is a diagram illustrating an external configuration viewed from the side 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.
　本実施形態の光調節装置４０は、駆動機構４４及び、この駆動機構４４の両側面に接着され立設される電磁駆動源４１を有する。駆動機構４４は、平板の下側基板４２上にスペーサ４及び揺動部（羽根部）５を配置し、その上方に上側基板３を載置して、一体的に構成される。電磁駆動源４１は、Ｕ字形状のヨーク４３とコイル１４とで構成される。コイル１４は、ヨーク４３のＵ字形状の底部中央に巻回されている。 The light adjusting device 40 of the present embodiment includes a drive mechanism 44 and an electromagnetic drive source 41 that is bonded and erected on both side surfaces of the drive mechanism 44. The drive mechanism 44 is configured integrally by disposing the spacer 4 and the swinging portion (blade portion) 5 on the lower substrate 42 of the flat plate, and placing the upper substrate 3 thereon. The electromagnetic drive source 41 includes a U-shaped yoke 43 and a coil 14. The coil 14 is wound around the center of the U-shaped bottom of the yoke 43.
　下側基板４２は、両側面に凸形状に張り出した位置決め部位［第３の位置決め部位］４２ａが形成される。ヨーク４３の両端部４３ａ、４３ｂの端面には、位置決め部位４２ａと嵌合する溝４３ｃ［第４の位置決め部位］が形成されている。この溝４３ｃの深さは、位置決め部位４２ａの厚みよりも浅く形成され、嵌合した際に、位置決め部位４２ａの底面から間隔ｔだけ、両端部４３ａ、４３ｂが浮いた状態となる。 The lower substrate 42 is formed with a positioning portion [third positioning portion] 42a protruding in a convex shape on both side surfaces. A groove 43c [fourth positioning portion] that fits with the positioning portion 42a is formed on the end surfaces of both end portions 43a and 43b of the yoke 43. The depth of the groove 43c is formed to be shallower than the thickness of the positioning portion 42a, and when fitted, the both end portions 43a and 43b are floated from the bottom surface of the positioning portion 42a by a distance t.
　従って、組み立ての際に、下側基板４２の位置決め部位４２ａにヨーク４３の溝４３ｃを嵌合させると、ヨーク４３は、Ｘ軸方向の位置決めだけではなく、Ｚ軸方向にも位置決めされる。これらの位置決め部位４２ａと溝４３ｃにより、下面位置決め部位が構成される。即ち、第３の位置決め部位と第４の位置決め部位が下面位置決め部となる。 Therefore, when the groove 43c of the yoke 43 is fitted into the positioning portion 42a of the lower substrate 42 during assembly, the yoke 43 is positioned not only in the X-axis direction but also in the Z-axis direction. The positioning portion 42a and the groove 43c constitute a lower surface positioning portion. That is, the third positioning portion and the fourth positioning portion become the lower surface positioning portion.
　下側基板４２の位置決め部位４２ａの側面をＺ軸方向に形成することで、ヨーク４３が駆動機構４４（上側基板３の上面）に対して垂直方向に立設される。さらに、ヨーク４３に任意の角度の傾きを持たせて取り付ける場合には、位置決め部位４２ａの側面をその傾きとなるように形成する。即ち、位置決め部位４２ａを溝４３ｃに嵌合させて係止するだけで、Ｘ軸方向における正確な位置で且つ、任意の角度の傾きで、電磁駆動源４１が駆動機構４４に位置決めされる。尚、本実施形態では、位置決め部位４２ａと溝４３ｃによる嵌合箇所は、下側基板４２の両側面に設けた構成であるが、少なくとも一方の側面に設けた構成であってもよい。 By forming the side surface of the positioning portion 42a of the lower substrate 42 in the Z-axis direction, the yoke 43 is erected in the vertical direction with respect to the drive mechanism 44 (the upper surface of the upper substrate 3). Further, when the yoke 43 is attached with an inclination of an arbitrary angle, the side surface of the positioning portion 42a is formed to have the inclination. That is, the electromagnetic drive source 41 is positioned by the drive mechanism 44 at an accurate position in the X-axis direction and at an arbitrary angle of inclination simply by fitting and locking the positioning portion 42a into the groove 43c. In addition, in this embodiment, although the fitting location by the positioning part 42a and the groove | channel 43c is the structure provided in the both sides | surfaces of the lower board | substrate 42, the structure provided in the at least one side surface may be sufficient.
　本実施形態によれば、駆動機構４４に電磁駆動源４１を組み付ける際に、互いの位置決め部位を嵌合させることで、下側基板４２の側面を位置決めだけではなく、上下方向（Ｚ軸方向）に対しても容易に位置決めすることができる。また、位置決め部位４２ａの厚さよりも溝４３ｃの深さを浅く形成したため、嵌合させた際に、確実に溝４３ｃの底まで嵌合させることができる。 According to the present embodiment, when assembling the electromagnetic drive source 41 to the drive mechanism 44, the side portions of the lower substrate 42 are not only positioned but also vertically (Z-axis direction) by fitting the positioning portions to each other. Can be easily positioned. Moreover, since the depth of the groove 43c is formed shallower than the thickness of the positioning portion 42a, the bottom of the groove 43c can be surely fitted when fitted.
　［第３の実施形態］　
　次に第３の実施形態に係る光調節装置について説明する。　
　図９は、第３の実施形態に係る光調節装置の側面から見た外観構成を示す図、図１０は、図９におけるＢ－Ｂ断面の構造を示す図である。本実施形態の説明において、前述した第１及び第２の実施形態と同等の構成部位には同じ参照符号を付して、詳細な説明は省略する。 [Third Embodiment]
Next, a light adjusting apparatus according to a third embodiment will be described.
FIG. 9 is a diagram showing an external configuration viewed from the side of the light adjusting device according to the third embodiment, and FIG. 10 is a diagram showing a structure of a BB cross section in FIG. In the description of this embodiment, the same reference numerals are assigned to the same components as those in the first and second embodiments described above, and detailed description thereof is omitted.
　本実施形態は、前述した第１の実施形態における位置決め部位１２［第１の位置決め部位］及び溝３ａ［第２の位置決め部位］の組み合わせによる側面位置決め部と、第２の実施形態における位置決め部位４２ａ［第３の位置決め部位］と溝４３ｃ［第４の位置決め部位］の組み合わせによる下面位置決め部との両方の位置決め部位が設けられた構成である。 In the present embodiment, the side surface positioning portion is a combination of the positioning portion 12 [first positioning portion] and the groove 3a [second positioning portion] in the first embodiment described above, and the positioning portion 42a in the second embodiment. This is a configuration in which both of the positioning portions of the [third positioning portion] and the lower surface positioning portion by the combination of the groove 43c [fourth positioning portion] are provided.
　具体的には、図９に示すように、側面位置決め部として、ヨーク１１に設けられた位置決め部位１２が上側基板３の溝３ａに嵌合する。また、下面位置決め部として、下側基板４２の位置決め部位４２ａにヨーク１１の溝１１ｃが嵌合される。 Specifically, as shown in FIG. 9, the positioning portion 12 provided on the yoke 11 is fitted into the groove 3 a of the upper substrate 3 as a side surface positioning portion. Further, the groove 11 c of the yoke 11 is fitted into the positioning portion 42 a of the lower substrate 42 as the lower surface positioning portion.
　本実施形態の光調節装置によれば、前述した第１の実施形態及び第２の実施形態の作用効果を併せ持つことができる。即ち、組み立て時に互いの位置決め部位を嵌合するだけで、回転軸６に対する所定の位置に電磁駆動源を取り付けることができる。また、駆動機構の一側面で２箇所の位置決め部を設けているため、組み立て時に嵌め込むだけで位置精度が高まり、組み立て後の位置ずれや剥がれ等の損傷に対する耐久性が高まる。電磁駆動源を駆動機構に対して、所望する角度に立設することができ、搭載する光学機器の設置スペースに合わせて、形態を変更することができる。また、駆動機構に対して電磁駆動源を立設させることで、光路と交差する方向（径方向）の小型化を実現することができる。 According to the light adjusting device of the present embodiment, it is possible to have both the effects of the first embodiment and the second embodiment described above. That is, the electromagnetic drive source can be attached at a predetermined position with respect to the rotating shaft 6 simply by fitting the positioning portions to each other during assembly. In addition, since two positioning portions are provided on one side of the drive mechanism, the positional accuracy is increased only by being fitted at the time of assembly, and durability against damage such as positional deviation and peeling after assembly is increased. The electromagnetic drive source can be erected at a desired angle with respect to the drive mechanism, and the form can be changed according to the installation space of the optical equipment to be mounted. Moreover, by making an electromagnetic drive source stand up with respect to a drive mechanism, size reduction of the direction (radial direction) which cross | intersects an optical path is realizable.
　さらに前述した各実施形態において、回転軸６周囲の揺動部５に両面に環状溝を形成し、下側基板２及び上側基板３において、これらの環状溝と対向するように同一の環状溝を形成し、それぞれの環状溝間に硬質球体を入れることにより、ベアリング構造を構成すれば、抵抗損を減少させ、より円滑に回動動作させることができる。 Further, in each of the embodiments described above, annular grooves are formed on both surfaces of the swinging portion 5 around the rotation shaft 6, and the same annular groove is formed on the lower substrate 2 and the upper substrate 3 so as to face these annular grooves. If a bearing structure is formed by forming and inserting a hard sphere between each annular groove, the resistance loss can be reduced and the rotation can be performed more smoothly.
　１，４０…光調節装置、２…下側基板、２ａ，３ｂ…軸支用孔、３…上側基板、３ａ…溝、４…スペーサ、４ａ,４ｂ…ストッパ、５…揺動部、６，６ａ，６ｂ…回転軸、７…孔、８…光調節部、９…駆動機構、１１，４３…ヨーク，１１ａ，１１ｂ…端、１１ｃ，４３ｃ…溝、１２，１２ａ，１２ｂ，１２ｃ，１２ｄ，４２ａ…位置決め部位、１３…電磁駆動源、１３ａ…磁界形成領域、１４…コイル、２１…切換スイッチ、２２…直流電源、３０…内視鏡、３１…挿入部、３２…湾曲部、３３…硬質部、３４…撮像用窓、４１…電磁駆動源、４２…下側基板、４３ａ，４３ｂ…両端部、４４…駆動機構。 DESCRIPTION OF SYMBOLS 1,40 ... Light control apparatus, 2 ... Lower board, 2a, 3b ... Shaft support hole, 3 ... Upper board, 3a ... Groove, 4 ... Spacer, 4a, 4b ... Stopper, 5 ... Swing part, 6, 6a, 6b ... rotating shaft, 7 ... hole, 8 ... light adjusting part, 9 ... drive mechanism, 11, 43 ... yoke, 11a, 11b ... end, 11c, 43c ... groove, 12, 12a, 12b, 12c, 12d, 42a ... positioning part, 13 ... electromagnetic drive source, 13a ... magnetic field forming region, 14 ... coil, 21 ... switch, 22 ... DC power supply, 30 ... endoscope, 31 ... insertion part, 32 ... curving part, 33 ... hard 34, an imaging window, 41, an electromagnetic drive source, 42, a lower substrate, 43a, 43b, both ends, 44, a drive mechanism.

Claims (12)

  1. 　少なくとも１つの光路に作用する光調節部と、
    　前記光調節部に設けられた回転軸と、
    　前記回転軸を介して前記光調節部を回転させる磁気回路を形成する電磁駆動部と、
    を有する光調節装置であって、
    　前記電磁駆動部の一部に、前記回転軸との位置決めを行う少なくとも一つの位置決め部を有することを特徴とする光調節装置。     A light control unit acting on at least one optical path;
    A rotating shaft provided in the light adjusting unit;
    An electromagnetic drive unit forming a magnetic circuit for rotating the light adjusting unit via the rotation axis;
    A light control device comprising:
    The light adjusting device according to claim 1, further comprising: at least one positioning unit that positions the rotating shaft at a part of the electromagnetic driving unit.
  2. 　前記回転軸を回転自在に保持する回転軸保持部材を有しており、
    　前記回転軸保持部材は、前記電磁駆動部の位置決め部に対応する形状の位置決め部を少なくとも一つ有すること、を特徴とする請求項第１に記載の光調節装置。     A rotation shaft holding member that rotatably holds the rotation shaft;
    2. The light adjusting device according to claim 1, wherein the rotating shaft holding member has at least one positioning portion having a shape corresponding to the positioning portion of the electromagnetic driving portion.
  3. 　前記電磁駆動部及び前記回転軸保持部材の位置決め部は、前記回転軸に対して垂直に交差する平面方向に嵌合する形状を有すること、を特徴とする請求項第２に記載の光調節装置。 3. The light adjusting device according to claim 2, wherein the electromagnetic drive unit and the positioning unit of the rotating shaft holding member have a shape that fits in a plane direction perpendicular to the rotating shaft. .
  4. 　前記電磁駆動部及び前記回転軸保持部材の位置決め部は、前記回転軸に対して並行な平面方向に嵌合する形状を有すること、を特徴とする請求項第２に記載の光調節装置。 The light adjusting device according to claim 2, wherein the electromagnetic drive unit and the positioning unit of the rotary shaft holding member have a shape that fits in a plane direction parallel to the rotary shaft.
  5. 　前記電磁駆動部及び前記回転軸保持部材の位置決め部は、前記回転軸に並行な平面方向に嵌合する形状を有し、更に前記回転軸に対して垂直に交差する平面方向に凹凸形状を有すること、を特徴とする請求項第2記載の光調節装置。 The electromagnetic drive unit and the positioning unit of the rotary shaft holding member have a shape that fits in a plane direction parallel to the rotary shaft, and further have a concavo-convex shape in a plane direction perpendicular to the rotary shaft. 3. The light adjusting device according to claim 2, wherein
  6. 　一端に光束に作用する光調節部が配置され、他端に帯磁する回転軸が配置される揺動部を、前記回転軸を中心として回動可能に支持する駆動機構と、
    　前記駆動機構に接合して任意の角度に立設され、前記回転軸に磁気的作用を与えて、前記光調節部を揺動させる磁気回路を形成する電磁駆動部と、
    　前記電磁駆動部の前記駆動機構と接合する箇所に設けられる第１の位置決め部位と、
    　前記駆動機構の前記電磁駆動部と接合する箇所に設けられ、取り付け時に、前記第１の位置決め部位と嵌合して係止し、前記回転軸に対する前記電磁駆動部の位置合わせする第２の位置決め部位と、
    を有することを特徴とする光調節装置。     A drive mechanism that supports a swinging portion in which a light adjusting portion that acts on a light beam is disposed at one end and a rotating shaft that is magnetized at the other end is rotatably supported around the rotating shaft;
    An electromagnetic drive unit that is erected at an arbitrary angle by being joined to the drive mechanism, and that forms a magnetic circuit that swings the light adjusting unit by applying a magnetic action to the rotating shaft;
    A first positioning portion provided at a location where the electromagnetic drive unit is joined to the drive mechanism;
    A second positioning that is provided at a location where the electromagnetic driving unit of the driving mechanism is joined, is fitted and locked with the first positioning portion at the time of attachment, and aligns the electromagnetic driving unit with respect to the rotating shaft. The site,
    A light adjusting device comprising:
  7. 　前記第２の位置決め部位は、前記電磁駆動部が任意の角度の傾きで前記駆動機構に立設するように、前記第１の位置決め部位と嵌合して位置合わせすることを特徴とすることを特徴とする請求項６に記載の光調節装置。 The second positioning part is fitted and aligned with the first positioning part so that the electromagnetic drive unit stands on the drive mechanism at an arbitrary angle of inclination. 7. The light adjusting device according to claim 6, wherein
  8. 　前記電磁駆動部は、Ｕ字形状を成し、開口する両端の内面を前記駆動機構の両側面に接合して固定され、
    　前記第１の位置決め部位は、前記電磁駆動部の内面上の前記駆動機構と接合する箇所に、側面を有する突起部として形成され、
    　前記第２の位置決め部位は、前記駆動機構の少なくとも一方の上部側面で前記電磁駆動部と接合する箇所に、前記突起部の側面と隙間なく嵌合する溝として形成され、
    　前記溝の側面の延伸方向が前記任意の角度に傾いて形成されることを特徴とする請求項６に記載の光調節装置。     The electromagnetic drive unit has a U shape, and is fixed by joining inner surfaces of both ends that are open to both side surfaces of the drive mechanism,
    The first positioning part is formed as a protrusion having a side surface at a position where the first driving part is joined to the driving mechanism on the inner surface of the electromagnetic driving part.
    The second positioning portion is formed as a groove that fits with the side surface of the protruding portion without a gap at a location where the electromagnetic driving unit is joined to at least one upper side surface of the driving mechanism.
    The light adjusting device according to claim 6, wherein an extending direction of a side surface of the groove is inclined to the arbitrary angle.
  9. 　前記電磁駆動部は、Ｕ字形状を成し、開口する両端の内面を前記駆動機構の両側面に接合して固定され、
    　前記第１の位置決め部位は、前記電磁駆動部の開口する前記両端の端面に溝として形成され、
    　前記第２の位置決め部位は、前記駆動機構の少なくとも一方の側面下部から延出し、前記溝の側面に隙間なく嵌合する突起部として形成され、
    　前記第１の位置決め部位の前記溝の側面の延伸方向が前記任意の角度に傾いて形成されることを特徴とする請求項６に記載の光調節装置。     The electromagnetic drive unit has a U shape, and is fixed by joining inner surfaces of both ends that are open to both side surfaces of the drive mechanism,
    The first positioning part is formed as a groove on the end faces of the both ends where the electromagnetic driving unit opens,
    The second positioning portion is formed as a protrusion that extends from a lower portion of at least one side surface of the drive mechanism and fits into a side surface of the groove without a gap,
    The light adjusting device according to claim 6, wherein an extending direction of a side surface of the groove of the first positioning portion is inclined to the arbitrary angle.
  10. 　前記第１の位置決め部位の前記溝の深さは、前記第２の位置決め部位の突起部の厚さよりも浅く形成され、
    　前記溝に前記突起部が嵌合した際に、前記第２の位置決め部位の底面から前記電磁駆動部の前記両端の端面が離間した状態となることを特徴とする請求項９に記載の光調節装置。     The depth of the groove of the first positioning portion is formed shallower than the thickness of the protrusion of the second positioning portion;
    10. The light adjustment according to claim 9, wherein when the protrusion is fitted in the groove, the end surfaces of the both ends of the electromagnetic driving unit are separated from the bottom surface of the second positioning portion. apparatus.
  11. 　　請求項６に記載される前記光調節装置を、撮像素子に結像された光像を調節する位置に配置することを特徴とする内視鏡。 An endoscope, wherein the light adjusting device according to claim 6 is disposed at a position for adjusting a light image formed on an image sensor.
  12. 　　請求項６に記載される前記光調節装置を搭載することを特徴とする光学機器。 An optical apparatus comprising the light adjusting device according to claim 6.
PCT/JP2015/068565 2015-06-26 2015-06-26 Light adjustment device and optical instrument equipped with light adjustment device WO2016208078A1 (en)

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JPH11183962A (en) * 1997-12-25 1999-07-09 Nippon Seimitsu Sokki Kk Motor-driven aperture device
JP2003052162A (en) * 2001-08-07 2003-02-21 Canon Electronics Inc Magnet drive, device having magnet drive as drive source, control device for quantity of light, and optical instrument
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