WO2024042967A1 - Lens system and lighting system - Google Patents

Lens system and lighting system Download PDF

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Publication number
WO2024042967A1
WO2024042967A1 PCT/JP2023/027260 JP2023027260W WO2024042967A1 WO 2024042967 A1 WO2024042967 A1 WO 2024042967A1 JP 2023027260 W JP2023027260 W JP 2023027260W WO 2024042967 A1 WO2024042967 A1 WO 2024042967A1
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WO
WIPO (PCT)
Prior art keywords
axis
lens
actuator
axis direction
play mechanism
Prior art date
Application number
PCT/JP2023/027260
Other languages
French (fr)
Japanese (ja)
Inventor
佑介 丹治
健治 岡田
裕弥 阿古
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2024042967A1 publication Critical patent/WO2024042967A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/06—Swinging lens about normal to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present disclosure relates to a lens system and an illumination system, and more particularly to a lens system in which a lens can be moved, and an illumination system including a lens system.
  • Patent Document 1 discloses a lens driving device that drives a lens.
  • the lens drive device includes a lens drive section.
  • the lens drive device has an optical axis of a lens attached to the lens drive section.
  • the lens drive section includes a base member, an X-axis movable body, a Y-axis movable body, and a lens carrier.
  • the base member, the X-axis movable body, the Y-axis movable body, and the lens carrier are arranged in this order along the optical axis direction.
  • the lens carrier has a lens attachment part for attaching a lens.
  • the lens driving device includes an X-axis actuator, a Y-axis actuator, and a carrier actuator.
  • An object of the present disclosure is to provide a lens system and an illumination system that can improve reliability.
  • a lens system includes a lens unit, a housing, an X-axis actuator, a Y-axis actuator, a Z-axis actuator, a control section, an X-axis play mechanism, and a Y-axis play mechanism. and a Z-axis play mechanism.
  • the lens unit includes a lens and a lens holding member that holds the lens.
  • the housing accommodates the lens unit.
  • the X-axis actuator is fixed to the housing and moves the lens unit in the X-axis direction.
  • the Y-axis actuator is fixed to the housing and moves the lens unit in the Y-axis direction perpendicular to the X-axis direction.
  • the Z-axis actuator is fixed to the housing and moves the lens unit in a Z-axis direction perpendicular to the X-axis direction and the Y-axis direction.
  • the control unit controls the X-axis actuator, the Y-axis actuator, and the Z-axis actuator.
  • the X-axis play mechanism is provided between the lens unit and the X-axis actuator.
  • the X-axis play mechanism includes a first slider that is slidable in the Y-axis direction and a second slider that is slidable in the Z-axis direction.
  • the Y-axis play mechanism is provided between the lens unit and the Y-axis actuator.
  • the Y-axis play mechanism includes a third slider that is slidable in the X-axis direction and a fourth slider that is slidable in the Z-axis direction.
  • the Z-axis play mechanism is provided between the lens unit and the Z-axis actuator.
  • the Z-axis play mechanism includes a fifth slider that is slidable in the X-axis direction and a sixth slider that is slidable in the Y-axis direction.
  • An illumination system includes a light source and the lens system.
  • the lens system is arranged such that the Z-axis direction is parallel to the optical axis of the light source.
  • a light incident surface of the lens is separated from the light source in the Z-axis direction.
  • FIG. 1 is a plan view of a lighting fixture including a lens system according to an embodiment when the lens is at a reference position.
  • FIG. 2 is a front view of a lighting fixture including the same lens system as described above when the lens is at a reference position.
  • FIG. 3 is a side view of a lighting fixture including the same lens system as described above, when the lens is at the reference position.
  • FIG. 4 is an explanatory diagram of the relative positional relationship of the X-axis play mechanism, the Y-axis play mechanism, and the Z-axis play mechanism in the same lens system.
  • FIG. 5A is an explanatory diagram of the light distribution of the lighting device when the lens is at the reference position in the lighting system described above.
  • FIG. 5A is an explanatory diagram of the light distribution of the lighting device when the lens is at the reference position in the lighting system described above.
  • FIG. 5B is an explanatory diagram of the light distribution of the lighting device when the lens is moved from the reference position in the negative direction of the Z-axis in the above lighting system.
  • FIG. 5C is an explanatory diagram of the light distribution of the lighting device when the lens is moved from the reference position in the negative direction of the Z axis and the positive direction of the X axis in the same lighting system as above.
  • FIG. 6A is an explanatory diagram of an illumination area of a lighting fixture including the same lens system as above.
  • FIG. 6B is an explanatory diagram of an illumination area of a lighting fixture including the same lens system as above.
  • FIG. 7 is a configuration diagram of an illumination system including the same lens system as above.
  • FIG. 8 is a side view showing another configuration example of a lighting fixture including the same lens system as above.
  • orthogonal coordinates having three axes, the X-axis, Y-axis, and Z-axis that are orthogonal to each other, are defined, and in particular, the axis along the optical axis A11 of the lens 11 (see FIG. 4) is defined as the "Z-axis.”
  • one axis perpendicular to the Z-axis is the "X-axis”
  • an axis perpendicular to both the Z-axis and the X-axis is the "Y-axis”.
  • the X-axis, Y-axis, and Z-axis are all virtual axes, and the arrows indicating "X,”"Y,” and “Z” in the drawings are only shown for explanation. , none of which involve substance. Further, these directions are not intended to limit the directions in which the lens system 100 is used. Note that the origin of the orthogonal coordinates can be defined, for example, at the intersection of the light exit surface of the lens 11 and the optical axis A11 of the lens 11.
  • the lighting system 200 (see FIG. 7) is used, for example, to illuminate a target space.
  • the target space is, for example, a space within a facility.
  • the facility is, for example, an office building.
  • the facility may be, for example, a single-family house, an apartment complex, a store, a museum, a hotel, a factory, a stadium, an airport, or the like.
  • the lens system 100 includes a lens unit 1, a housing 2, an X-axis actuator 3, a Y-axis actuator 4, and a Z-axis actuator 5, an X-axis play mechanism 6, a Y-axis play mechanism 7, a Z-axis play mechanism 8, and a control section 10 (see FIG. 7).
  • the lens unit 1 includes a lens 11 and a lens holding member 12 holding the lens 11.
  • the housing 2 houses the lens unit 1.
  • the X-axis actuator 3 moves the lens unit 1 in the X-axis direction.
  • the Y-axis actuator 4 moves the lens unit 1 in the Y-axis direction orthogonal to the X-axis direction.
  • the Z-axis actuator 5 moves the lens unit 1 in the Z-axis direction orthogonal to the X-axis direction and the Y-axis direction.
  • the control unit 10 controls the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5.
  • the X-axis play mechanism 6 is provided between the lens unit 1 and the X-axis actuator 3.
  • the Y-axis play mechanism 7 is provided between the lens unit 1 and the Y-axis actuator 4.
  • the Z-axis play mechanism 8 is provided between the lens unit 1 and the Z-axis actuator 5.
  • FIG. 2 illustration of the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5 is omitted.
  • illustration of the housing 2, the X-axis actuator 3, and the Y-axis actuator 4 is omitted.
  • the lens system 100 further includes a first connecting plate 91, a second connecting plate 92, and a third connecting plate 93.
  • the first connecting plate 91 connects the X-axis actuator 3 and the X-axis play mechanism 6.
  • the second connecting plate 92 connects the Y-axis actuator 4 and the Y-axis play mechanism 7.
  • the third connecting plate 93 connects the Z-axis actuator 5 and the Z-axis play mechanism 8.
  • the illumination system 200 includes a light source 201 and a lens system 100, as shown in FIG.
  • the lens unit 1 includes a lens 11 and a lens holding member 12 holding the lens 11, as shown in FIGS. 1 to 3.
  • the lens 11 is, for example, a condenser lens.
  • the lens 11 collects light emitted from the light source 201 of the illumination system 200 (see FIG. 7), for example.
  • the lens 11 is, for example, a biconvex lens (see FIG. 2).
  • the lens 11 includes a lens portion 110 having a first surface 111 (see FIG. 2) serving as a light entrance surface and a second surface 112 serving as a light exit surface, and a plurality of lenses (for example, 4) collar portions 113.
  • the outer edge 120 of the lens holding member 12 has, for example, a circular shape.
  • “In plan view” has the same meaning as "viewed from below the lens 11 in the direction along the optical axis A11 of the lens 11". In other words, “in plan view” has the same meaning as "in plan view from the thickness direction of the lens 11.”
  • the lens holding member 12 has a window hole 123 that exposes the first surface 111 and the second surface 112 of the lens 11.
  • the opening shape of the window hole 123 is, for example, circular, but is not limited to this, and may be, for example, elliptical.
  • the lens holding member 12 has a first surface 121 (see FIG. 2) and a second surface 122. In the lens holding member 12, the first surface 121 is located on the first surface 111 side of the lens 11, and the second surface 122 is located on the second surface 112 side of the lens 11. Further, the lens holding member 12 has a light shielding property against visible light.
  • the housing 2 houses the lens unit 1.
  • the housing 2 includes a bottom plate portion 21, a cylindrical portion 22, and a flange portion 23.
  • the bottom plate portion 21 has a flat plate shape.
  • the cylindrical portion 22 protrudes from the periphery of one surface of the bottom plate portion 21 in the thickness direction of the bottom plate portion 21 and surrounds the lens unit 1 .
  • a bottom plate portion 21, a cylinder portion 22, and a flange portion 23 are integrally formed.
  • the shape of the housing 2 is a cylindrical shape with a bottom. In plan view, the outer edge of the housing 2 has a circular shape.
  • the material of the housing 2 is, for example, aluminum, but is not limited thereto, and may be, for example, an aluminum alloy, stainless steel, or synthetic resin.
  • the X-axis actuator 3 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the X-axis direction. "Moving the lens unit 1 in the X-axis direction” means moving the lens unit 1 in the positive or negative direction of the X-axis.
  • the X-axis actuator 3 is an electric actuator. More specifically, as shown in FIG. 1, the X-axis actuator 3 includes a first stepping motor 31, a first shaft joint, and a first feed screw mechanism 32.
  • the first feed screw mechanism 32 has a function of converting the rotational motion of the first stepping motor 31 into linear motion.
  • the first feed screw mechanism 32 is connected to the rotating shaft of the first stepping motor 31.
  • the first stepping motor 31 is controlled by the control section 10 (see FIG. 7).
  • the first stepping motor 31 is connected to a plurality of first electric wires, and is connected to the control unit 10 by the plurality of first electric wires.
  • the first feed screw mechanism 32 includes, for example, a first screw shaft 321, a first nut 322, a first guide shaft 323, and a first holding member 324. In the first feed screw mechanism 32, as the first screw shaft 321 rotates, the first nut 322 moves linearly.
  • the first feed screw mechanism 32 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the first nut 322 and the first screw shaft 321.
  • the first screw shaft 321 is connected to the rotating shaft of the first stepping motor 31 through a first shaft joint.
  • the first holding member 324 includes a center piece 3240, a first holding piece 3241, and a second holding piece 3242.
  • the center piece 3240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the first screw shaft 321 .
  • the first holding piece 3241 protrudes from the first end of the center piece 3240 in the longitudinal direction in the thickness direction of the center piece 3240.
  • the second holding piece 3242 protrudes from the second end of the central piece 3240 in the longitudinal direction in the same direction as the first holding piece 3241.
  • the first holding piece 3241 includes a first bearing that rotatably holds the first end of the first screw shaft 321.
  • the second holding piece 3242 includes a second bearing that rotatably holds the second end of the first screw shaft 321.
  • the first guide shaft 323 has a round bar shape and is arranged between the first holding piece 3241 and the second holding piece 3242 so as to be parallel to the first screw shaft 321.
  • the first holding member 324 is fixed to the housing 2.
  • Y-axis actuator 4 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the Y-axis direction. "Moving the lens unit 1 in the Y-axis direction” means moving the lens unit 1 in the positive or negative direction of the Y-axis.
  • the Y-axis actuator 4 is an electric actuator. More specifically, as shown in FIG. 1, the Y-axis actuator 4 includes a second stepping motor 41, a second shaft joint, and a second feed screw mechanism 42.
  • the second feed screw mechanism 42 has a function of converting the rotational motion of the second stepping motor 41 into linear motion.
  • the second feed screw mechanism 42 is connected to the rotating shaft of the second stepping motor 41.
  • the second stepping motor 41 is controlled by the control section 10 (see FIG. 7).
  • the second stepping motor 41 is connected to a plurality of second electric wires, and is connected to the control unit 10 by the plurality of second electric wires.
  • the second feed screw mechanism 42 includes, for example, a second screw shaft 421, a second nut 422, a second guide shaft 423, and a second holding member 424.
  • the second feed screw mechanism 42 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the second nut 422 and the second screw shaft 421.
  • the second screw shaft 421 is connected to the rotating shaft of the second stepping motor 41 by a second shaft joint.
  • the second holding member 424 includes a center piece 4240, a first holding piece 4241, and a second holding piece 4242.
  • the center piece 4240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the second screw shaft 421 .
  • the first holding piece 4241 protrudes from the first end of the center piece 4240 in the longitudinal direction in the thickness direction of the center piece 4240.
  • the second holding piece 4242 protrudes from the second end of the center piece 4240 in the longitudinal direction in the same direction as the first holding piece 4241.
  • the first holding piece 4241 includes a first bearing that rotatably holds the first end of the second screw shaft 421.
  • the second holding piece 4242 includes a second bearing that rotatably holds the second end of the second screw shaft 421.
  • the second guide shaft 423 has a round bar shape and is arranged between the first holding piece 4241 and the second holding piece 4242 so as to be parallel to the second screw shaft 421.
  • the second holding member 424 is fixed to the housing 2.
  • the Z-axis actuator 5 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the Z-axis direction. "Moving the lens unit 1 in the Z-axis direction” means moving the lens unit 1 in the positive or negative direction of the Z-axis.
  • the Z-axis actuator 5 is an electric actuator. More specifically, as shown in FIG. 3, the Z-axis actuator 5 includes a third stepping motor 51, a third shaft joint, and a third feed screw mechanism 52.
  • the third feed screw mechanism 52 has a function of converting the rotational motion of the third stepping motor 51 into linear motion.
  • the third feed screw mechanism 52 is connected to the rotating shaft of the third stepping motor 51.
  • the third stepping motor 51 is controlled by the control section 10 (see FIG. 7).
  • the third stepping motor 51 is connected to a plurality of third electric wires, and is connected to the control unit 10 by the plurality of third electric wires.
  • the third feed screw mechanism 52 includes, for example, a third screw shaft 521, a third nut 522, a third guide shaft 523, and a third holding member 524.
  • the third feed screw mechanism 52 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the third nut 522 and the third screw shaft 521.
  • the third screw shaft 521 is connected to the rotating shaft of the third stepping motor 51 by a third shaft joint.
  • the third holding member 524 includes a center piece 5240, a first holding piece 5241, and a second holding piece 5242.
  • the center piece 5240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the third screw shaft 521.
  • the first holding piece 5241 protrudes from the first end of the center piece 5240 in the longitudinal direction in the thickness direction of the center piece 5240.
  • the second holding piece 5242 protrudes from the second end of the center piece 5240 in the longitudinal direction in the same direction as the first holding piece 5241.
  • the first holding piece 5241 includes a first bearing that rotatably holds the first end of the third screw shaft 521.
  • the second holding piece 5242 includes a second bearing that rotatably holds the second end of the third screw shaft 521.
  • the third guide shaft 523 has a round bar shape and is arranged between the first holding piece 5241 and the second holding piece 5242 so as to be parallel to the third screw shaft 521.
  • a third holding member 524 is fixed to the housing 2.
  • the X-axis play mechanism 6 is provided between the lens unit 1 and the X-axis actuator 3, as shown in FIG. More specifically, the X-axis play mechanism 6 is connected to the lens unit 1, and is also connected to the X-axis actuator 3 via the first connection plate 91. The X-axis play mechanism 6 is connected to a rectangular parallelepiped-shaped mounting portion 16 fixed to the first surface 121 (see FIG. 2) of the lens holding member 12. As shown in FIGS. 1 and 2, the X-axis play mechanism 6 includes a first slider 61 that is slidable in the Y-axis direction and a second slider 62 that is slidable in the Z-axis direction.
  • the X-axis play mechanism 6 further includes a first slide guide 63 and a second slide guide 64.
  • the first slide guide 63 holds the first slider 61 slidably in the Y-axis direction.
  • the X-axis play mechanism 6 includes a first steel ball interposed between a first slider 61 and a first slide guide 63.
  • the X-axis play mechanism 6 has a first ball slide guide mechanism including a first slider 61, a first slide guide 63, and a first steel ball.
  • the second slide guide 64 holds the second slider 62 slidably in the Z-axis direction.
  • the X-axis play mechanism 6 includes a second steel ball interposed between a second slider 62 and a second slide guide 64.
  • the X-axis play mechanism 6 has a second ball slide guide mechanism including a second slider 62, a second slide guide 64, and a second steel ball.
  • a first slide guide 63 and a second slider 62 are coupled.
  • the first slider 61 is fixed to the lens unit 1
  • the second slide guide 64 is fixed to the first nut 322 of the X-axis actuator 3 via the first connecting plate 91. There is.
  • the Y-axis play mechanism 7 is provided between the lens unit 1 and the Y-axis actuator 4, as shown in FIG. More specifically, the Y-axis play mechanism 7 is connected to the lens unit 1, and is also connected to the Y-axis actuator 4 via the second connection plate 92. The Y-axis play mechanism 7 is connected to a rectangular parallelepiped-shaped second mounting portion 17 fixed to the first surface 121 (see FIG. 2) of the lens holding member 12.
  • the Y-axis play mechanism 7 includes a third slider 71 that is slidable in the X-axis direction and a fourth slider 72 that is slidable in the Z-axis direction.
  • the Y-axis play mechanism 7 further includes a third slide guide 73 and a fourth slide guide 74.
  • the third slide guide 73 holds the third slider 71 slidably in the X-axis direction.
  • the Y-axis play mechanism 7 includes a third steel ball interposed between a third slider 71 and a third slide guide 73.
  • the Y-axis play mechanism 7 has a third ball slide guide mechanism including a third slider 71, a third slide guide 73, and a third steel ball.
  • the fourth slide guide 74 holds the fourth slider 72 slidably in the Z-axis direction.
  • the Y-axis play mechanism 7 includes a fourth steel ball interposed between a fourth slider 72 and a fourth slide guide 74.
  • the Y-axis play mechanism 7 has a fourth ball slide guide mechanism including a fourth slider 72, a fourth slide guide 74, and a fourth steel ball.
  • a third slide guide 73 and a fourth slider 72 are coupled.
  • the third slider 71 is fixed to the lens unit 1
  • the fourth slide guide 74 is fixed to the second nut 422 of the Y-axis actuator 4 via the second connecting plate 92. There is.
  • the Z-axis play mechanism 8 is provided between the lens unit 1 and the Z-axis actuator 5, as shown in FIGS. 1 and 3. More specifically, the Z-axis play mechanism 8 is connected to the lens unit 1 and is also connected to the Z-axis actuator 5 via the third connecting plate 93. The Z-axis play mechanism 8 is connected to a rectangular parallelepiped-shaped third mounting portion 18 fixed to the first surface 121 (see FIG. 3) of the lens holding member 12.
  • the Z-axis play mechanism 8 includes a fifth slider 81 that is slidable in the X-axis direction and a sixth slider 82 that is slidable in the Y-axis direction.
  • the Z-axis play mechanism 8 further includes a fifth slide guide 83 and a sixth slide guide 84.
  • the fifth slide guide 83 holds the fifth slider 81 slidably in the X-axis direction.
  • the Z-axis play mechanism 8 includes a fifth steel ball interposed between a fifth slider 81 and a fifth slide guide 83.
  • the Z-axis play mechanism 8 has a fifth ball slide guide mechanism including a fifth slider 81, a fifth slide guide 83, and a fifth steel ball.
  • the sixth slide guide 84 holds the sixth slider 82 slidably in the Y-axis direction.
  • the Z-axis play mechanism 8 has a sixth steel ball interposed between a sixth slider 82 and a sixth slide guide 84.
  • the Z-axis play mechanism 8 has a sixth ball slide guide mechanism including a sixth slider 82, a sixth slide guide 84, and a sixth steel ball.
  • a fifth slide guide 83 and a sixth slider 82 are coupled.
  • the fifth slider 81 is fixed to the lens unit 1
  • the sixth slide guide 84 is fixed to the third nut 522 of the Z-axis actuator 5 via the third connecting plate 93. There is.
  • the first connecting plate 91 (see FIG. 1) has a long plate shape, and has a first end in the longitudinal direction and It has a second end.
  • the first end of the first connecting plate 91 is fixed to the first nut 322 of the X-axis actuator 3, and the second end of the first connecting plate 91 is fixed to the second slide guide 64 of the X-axis play mechanism 6. is fixed.
  • the second connecting plate 92 (see FIG. 1) is, for example, in the shape of a long plate, and has a first end and a second end in the longitudinal direction.
  • the first end of the second connecting plate 92 is fixed to the second nut 422 of the Y-axis actuator 4, and the second end of the second connecting plate 92 is fixed to the fourth slide guide 74 of the Y-axis play mechanism 7. is fixed.
  • the third connecting plate 93 (see FIG. 3) has, for example, a long plate shape, and has a first end and a second end in the longitudinal direction.
  • the first end of the third connecting plate 93 is fixed to the third nut 522 of the Z-axis actuator 5, and the second end of the third connecting plate 93 is fixed to the sixth slide guide 84 of the Z-axis play mechanism 8. is fixed.
  • the control unit 10 controls the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5. More specifically, the control unit 10 controls the first stepping motor 31, the second stepping motor 41, and the third stepping motor 51. The control unit 10 controls the first stepping motor 31, the second stepping motor 41, and the third stepping motor 51 based on, for example, an external signal from an external device 300 (see FIG. 7). External device 300 is, for example, a remote controller or a human body detector, but is not limited to these.
  • the control unit 10 includes a computer system.
  • a computer system mainly consists of a processor and a memory as hardware.
  • the function of the control unit 10 in the present disclosure is realized by the processor executing a program recorded in the memory of the computer system.
  • the program may be pre-recorded in the memory of the computer system, provided through a telecommunications line, or recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, or hard disk drive. may be provided.
  • a processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large-scale integrated circuits (LSIs).
  • the integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration).
  • FPGAs Field-Programmable Gate Arrays
  • the plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips.
  • a plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices.
  • the computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.
  • the outer edge 120 of the lens holding member 12 has a circular shape in plan view. It is the shape.
  • the X-axis play mechanism 6, the Y-axis play mechanism 7, and the Z-axis play mechanism 8 are arranged at equal intervals in the direction along the outer edge 120 of the lens holding member 12.
  • FIG. 4 shows, in plan view, a first straight line DX1 passing through the optical axis A2 of the light source 201 and the X-axis play mechanism 6, and a second straight line passing through the optical axis A2 of the light source 201 and the Y-axis play mechanism 7.
  • DY1 and a third straight line DZ1 passing through the optical axis A2 of the light source 201 and the Z-axis play mechanism 8 are shown.
  • the angle ⁇ 1 between the third straight line DZ1 and the first straight line DX1 in the clockwise direction is 120 degrees
  • the angle ⁇ 2 between the third straight line DZ1 and the second straight line DY1 is 240 degrees. be.
  • a square S1 circumscribing the outer edge 120 of the lens holding member 12 in a plan view is illustrated with a two-dot chain line.
  • the square S1 has a first side S11, a second side S12, a third side S13, and a fourth side S14, each of which is a tangent to the outer edge 120 of the lens holding member 12.
  • the X-axis play mechanism 6 is arranged such that the longitudinal direction of the first slider 61 is parallel to the first side S11.
  • the Y-axis play mechanism 7 is arranged so that the longitudinal direction of the third slider 71 is parallel to the second side S12.
  • the Z-axis play mechanism 8 is arranged such that the longitudinal direction of the fifth slider 81 (see FIG. 3) is parallel to the fourth side S14, and the longitudinal direction of the sixth slider 82 (see FIG. 3) is parallel to the fourth side S14. It is arranged so as to be parallel to the three sides S13.
  • the illumination system 200 includes, for example, a light source 201 and a lens system 100.
  • the lighting system 200 further includes a heat sink 202 (see FIGS. 2 and 3), a power supply circuit 203, and a lighting circuit 204.
  • the light source 201 and the heat sink 202 are housed in the housing 2 of the lens system 100 (see FIG. 1).
  • the light source 201 and the heat sink 202 do not move within the housing 2 .
  • a circuit module including a power supply circuit 203, a lighting circuit 204, and a control unit 10 is housed in a second housing different from the housing 2 (first housing 2).
  • the housing 2 of the lens system 100 also serves as the main body of the lighting fixture 220.
  • the lighting fixture 220 is, for example, a ceiling-embedded lighting fixture, in which the bottom plate part 21 and the cylindrical part 22 of the casing 2 are inserted into the embedding hole of the ceiling material, and the flange part 23 of the casing 2 is inserted into the bottom surface of the ceiling material. It can be attached to the ceiling material while it is in contact with the ceiling.
  • the light source 201 includes, for example, a mounting board 210, a plurality of LED chips mounted on the mounting board 210, and a plurality of LED chips disposed on the mounting board 210, as shown in FIGS. 1 to 3. and a wavelength conversion section 211 covering the plurality of LED chips.
  • the emitted light color of each of the plurality of LED chips is blue.
  • a plurality of LED chips are connected in series, but the LED chips are not limited to this, and may be connected in series or in parallel.
  • the wavelength converter 211 has a function of converting blue light into light containing light of a different wavelength from the blue light.
  • the wavelength conversion section 211 includes, for example, a translucent material section and phosphor particles.
  • the wavelength conversion section 211 is formed of a mixture of a translucent material section and phosphor particles.
  • the material of the transparent material portion is preferably a material with high transmittance to visible light.
  • the transparent material is, for example, silicone resin.
  • Siliconone resin includes, for example, silicone resin, modified silicone resin, and the like.
  • the wavelength conversion section 211 has phosphor particles as a wavelength conversion element. The wavelength conversion element wavelength-converts a portion of the blue light and emits light having a wavelength different from the wavelength of the blue light.
  • the phosphor particles for example, yellow phosphor particles that emit yellow light can be used.
  • the peak wavelength of light emitted from the LED chip is, for example, 460 nm.
  • the light (fluorescence) emitted from the yellow phosphor particles preferably has an emission spectrum with a main emission peak wavelength in a wavelength range of 530 nm or more and 580 nm or less, for example.
  • the yellow phosphor particles are, for example, Y 3 Al 5 O 12 activated with Ce, but are not limited thereto.
  • the light (for example, white light) emitted from the light source 201 is a mixed color light of blue light and yellow light.
  • the wavelength conversion unit 211 does not necessarily include only yellow phosphor particles as a wavelength conversion element, but includes, for example, yellow phosphor particles, yellow-green phosphor particles, green phosphor particles, and red phosphor particles. It may include. That is, the wavelength converter 211 may include multiple types of phosphor particles.
  • the heat sink plate 202 (see FIGS. 2 and 3) is a member for radiating heat generated by the light source 201.
  • a light source 201 is arranged on a heat sink 202.
  • the material of the heat sink 202 includes, for example, aluminum or an aluminum alloy.
  • the heat sink 202 is fixed to the housing 2.
  • the power supply circuit 203 is configured to convert, for example, an AC voltage supplied from an AC power system into a DC voltage.
  • the power supply circuit 203 includes, for example, a rectifier circuit that full-wave rectifies an AC voltage and a power factor correction circuit (boost chopper circuit).
  • the power supply circuit 203 supplies DC voltage to the lighting circuit 204, the control unit 10, and the like.
  • the lighting circuit 204 includes, for example, a constant current circuit (for example, a step-down chopper circuit) that can adjust the magnitude of the DC power supplied to the light source 201.
  • a constant current circuit for example, a step-down chopper circuit
  • the lighting circuit 204 adjusts the magnitude of the current supplied to the light source 201 when dimming the light source 201 based on an external signal given from the external device 300, for example. Assuming that the dimming level (also referred to as dimming rate) when lighting the light source 201 at the rated current is 100%, the lighting circuit 204 can adjust the dimming rate within a range of, for example, 100% to 0%. . When the dimming level is 0%, the light source 201 is turned off.
  • the relative position of the lens 11 with respect to the light source 201 can be shifted (moved) in each of the X-axis direction, Y-axis direction, and Z-axis direction.
  • the light L1 emitted from the lighting fixture 220 is the light emitted from the light source 201 and collected by the lens 11, as shown in FIG. 5A.
  • the lens 11 is moved from the reference position in the negative direction of the Z axis, the light L1 emitted from the lighting fixture 220 is light emitted from the light source 201 and diffused by the lens 11, as shown in FIG. 5B. be.
  • the light distribution angle of the light L1 in FIG. 5A and FIG. 5B is different, and the light distribution angle of the light L1 in FIG. 5B is larger than the light distribution angle of the light L1 in FIG. 5A.
  • the lens 11 is moved from the reference position in the negative direction of the Z axis and the positive direction of the This is light that is diffused and has its direction of irradiation changed.
  • the irradiation direction of the light L1 is different between FIG. 5B and FIG. 5C.
  • the irradiation direction and light distribution angle of the light L1 from the light source 201 can be controlled by the lens system 100, for example, as shown in FIGS. 6A and 6B.
  • the light distribution angle of the light L1 emitted from the lighting fixture 220 is different between FIG. 6A and FIG. 6B.
  • FIG. 6B shows three lights L1 emitted from the lighting fixture 220 with different irradiation directions. In FIG. 6B, for example, when the lens 11 is shifted in the positive direction of the X-axis and the positive direction of the Y-axis while the lighting device 220 is emitting the light L1 shown by the dotted line in FIG.
  • the emitted light L1 is shown by a two-dot chain line. Further, in FIG. 6B, when the lens 11 is shifted in the negative direction of the X axis and the positive direction of the Y axis while the lighting device 220 is emitting the light L1 shown by the dotted line, the light L1 is emitted from the lighting device 220. The light L1 is shown by a dashed line.
  • the lens system 100 according to the embodiment is reliable by including the X-axis play mechanism 6, the Y-axis play mechanism 7, and the Z-axis play mechanism 8. This makes it possible to improve performance. More specifically, since the lens system 100 according to the embodiment includes the X-axis play mechanism 6, when the Y-axis actuator 4 moves the lens unit 1 in the Y-axis direction, the X-axis actuator 3 is tailgated. In addition, when the lens unit 1 is moved in the Z-axis direction by the Z-axis actuator 5, the X-axis actuator 3 can be prevented from being tailgated. Thereby, the lens system 100 can suppress bending, disconnection, etc. of the first electric wire connected to the X-axis actuator 3.
  • the lens system 100 according to the embodiment includes the Y-axis play mechanism 7, the Y-axis actuator 4 is not tailgated when the X-axis actuator 3 moves the lens unit 1 in the X-axis direction. It is also possible to suppress the Y-axis actuator 4 from being tailgated when the Z-axis actuator 5 moves the lens unit 1 in the Z-axis direction. Thereby, the lens system 100 can suppress bending, disconnection, etc. of the second electric wire connected to the Y-axis actuator 4. Furthermore, since the lens system 100 according to the embodiment includes the Z-axis play mechanism 8, the Z-axis actuator 5 is not tailgated when the X-axis actuator 3 moves the lens unit 1 in the X-axis direction.
  • the lens system 100 can suppress bending, disconnection, etc. of the third electric wire connected to the Z-axis actuator 5.
  • the illumination system 200 includes a light source 201 and a lens system 100.
  • the lens system 100 is arranged so that the Z-axis direction is parallel to the optical axis A2 of the light source 201.
  • the optical axis A11 of the lens 11 is arranged to overlap with the optical axis A2 of the light source 201 when the lens 11 is at the reference position.
  • the light entrance surface (first surface 111) of the lens 11 is away from the light source 201 in the Z-axis direction.
  • the lighting system 200 according to the embodiment can improve reliability.
  • the illumination system 200 since the illumination system 200 according to the embodiment includes the lens system 100, it is possible to control light distribution without changing the position of the light source 201.
  • the embodiment is only one of various embodiments of the present disclosure.
  • the embodiments can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved.
  • the lens 11 may be a Fresnel lens, as shown in FIG.
  • the lens 11 is not limited to a biconvex lens or a Fresnel lens, but may be a plano-convex lens, a plano-concave lens, a biconcave lens, etc., for example.
  • the outer edge 120 of the lens holding member 12 in plan view is not limited to a circular shape, and may be, for example, an elliptical shape or a polygonal shape.
  • each of the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5 are not limited to a configuration that includes a stepping motor and a feed screw mechanism, but may include, for example, a configuration that includes a piezoelectric element. It may be a configuration.
  • the X-axis actuator 3 and the X-axis play mechanism 6 may be connected without using the first connection plate 91.
  • the Y-axis actuator 4 and the Y-axis play mechanism 7 may be connected without using the second connection plate 92.
  • the Z-axis actuator 5 and the Z-axis play mechanism 8 may be connected without using the third connecting plate 93.
  • the lighting fixture 220 is not limited to a ceiling-embedded lighting fixture, but may be, for example, a ceiling-mounted lighting fixture, a pendant-type lighting fixture, a spotlight, or the like.
  • a circuit module including a power supply circuit 203, a lighting circuit 204, and a control unit 10 may be housed in the housing 2.
  • the lighting system 200 does not need to include a second housing separate from the housing 2.
  • the lens system 100 is not limited to a component of the illumination system 200 used for illuminating a target space, but can also be a component of an optical system used for optical wireless power transfer within the target space, for example. It's okay.
  • the target space is, for example, a space within a facility.
  • the facility is, for example, an office building.
  • the facility may be, for example, a single-family house, an apartment complex, a store, a museum, a hotel, a factory, a stadium, an airport, or the like.
  • a lens system (100) includes a lens unit (1), a housing (2), an X-axis actuator (3), a Y-axis actuator (4), and a Z-axis actuator ( 5), a control unit (10), an X-axis play mechanism (6), a Y-axis play mechanism (7), and a Z-axis play mechanism (8).
  • the lens unit (1) includes a lens (11) and a lens holding member (12) holding the lens (11).
  • the housing (2) houses the lens unit (1).
  • the X-axis actuator (3) is fixed to the housing (2) and moves the lens unit (1) in the X-axis direction.
  • the Y-axis actuator (4) is fixed to the housing (2) and moves the lens unit (1) in the Y-axis direction orthogonal to the X-axis direction.
  • the Z-axis actuator (5) is fixed to the housing (2) and moves the lens unit (1) in the Z-axis direction that is perpendicular to the X-axis direction and the Y-axis direction.
  • the control unit (10) controls the X-axis actuator (3), the Y-axis actuator (4), and the Z-axis actuator (5).
  • the X-axis play mechanism (6) is provided between the lens unit (1) and the X-axis actuator (3).
  • the X-axis play mechanism (6) includes a first slider (61) that is slidable in the Y-axis direction and a second slider (62) that is slidable in the Z-axis direction.
  • the Y-axis play mechanism (7) is provided between the lens unit (1) and the Y-axis actuator (4).
  • the Y-axis play mechanism (7) includes a third slider (71) that is slidable in the X-axis direction and a fourth slider (72) that is slidable in the Z-axis direction.
  • the Z-axis play mechanism (8) is provided between the lens unit (1) and the Z-axis actuator (5).
  • the Z-axis play mechanism (8) includes a fifth slider (81) that is slidable in the X-axis direction and a sixth slider (82) that is slidable in the Y-axis direction.
  • the lens system (100) further includes a first connecting plate (91), a second connecting plate (92), and a third connecting plate (93).
  • the first connecting plate (91) connects the X-axis actuator (3) and the X-axis play mechanism (6).
  • the second connecting plate (92) connects the Y-axis actuator (4) and the Y-axis play mechanism (7).
  • the third connecting plate (93) connects the Z-axis actuator (5) and the Z-axis play mechanism (8).
  • the outer edge (120) of the lens holding member (12) is circular in plan view.
  • the X-axis play mechanism (6), the Y-axis play mechanism (7), and the Z-axis play mechanism (8) are spaced at equal intervals in the direction along the outer edge (120) of the lens holding member (12). They are lined up.
  • the X-axis actuator (3) includes a first stepping motor (31) and a first feed screw mechanism ( 32).
  • the first feed screw mechanism (32) is connected to the rotating shaft of the first stepping motor (31).
  • the Y-axis actuator (4) includes a second stepping motor (41) and a second feed screw mechanism (42).
  • the second feed screw mechanism (42) is connected to the rotating shaft of the second stepping motor (41).
  • the Z-axis actuator (5) includes a third stepping motor (51) and a third feed screw mechanism (52).
  • the third feed screw mechanism (52) is connected to the rotating shaft of the third stepping motor (51).
  • the X-axis play mechanism (6) has a first slide guide (63) and a second slide guide ( 64).
  • the first slide guide (63) holds the first slider (61) slidably in the Y-axis direction.
  • the second slide guide (64) holds the second slider (62) slidably in the Z-axis direction.
  • the Y-axis play mechanism (7) further includes a third slide guide (73) and a fourth slide guide (74).
  • the third slide guide (73) holds the third slider (71) slidably in the X-axis direction.
  • the fourth slide guide (74) holds the fourth slider (72) slidably in the Z-axis direction.
  • the Z-axis play mechanism (8) includes a fifth slide guide (83) and a sixth slide guide (84).
  • the fifth slide guide (83) holds the fifth slider (81) slidably in the X-axis direction.
  • the sixth slide guide (84) holds the sixth slider (82) slidably in the Y-axis direction.
  • the lens unit (1) can be moved stably when moving.
  • the illumination system (200) includes a light source (201) and the lens system (100) according to any one of the first to fifth aspects.
  • the lens system (100) is arranged so that the Z-axis direction is parallel to the optical axis (A2) of the light source (201).
  • the light entrance surface (first surface 111) of the lens (11) is away from the light source (201) in the Z-axis direction.
  • Lens unit 11 Lens 12
  • Lens holding member 120 Outer edge 2 Housing 3
  • First stepping motor 32 First feed screw mechanism 4
  • Second stepping motor 42 Second feed screw mechanism 5
  • First stepping motor 52 Third feed screw mechanism 6
  • X-axis play mechanism 61 First slider 62
  • First slide guide 64 Second slide guide 7
  • Y-axis play mechanism 71
  • Fourth slider 73 Third slide guide 74
  • Fourth slide guide 8 Z-axis play mechanism 81
  • Fifth slider 82 Sixth slider 83
  • Fifth slide guide 84 Sixth slide guide 10
  • Control section 91 First connection plate 92
  • Second connection plate 93 Third Connecting plate 100
  • Lens system 200 Illumination system 201
  • Light source Optical axis
  • A11 Optical axis

Abstract

The present invention addresses the problem of improving reliability. In a lens system (100), a housing (2) accommodates a lens unit (1). An X-axis actuator (3) causes the lens unit (1) to move in the X-axis direction. A Y-axis actuator (4) causes the lens unit (1) to move in the Y-axis direction. A Z-axis actuator (5) causes the lens unit (1) to move in the Z-axis direction. A control unit (10) controls the X-axis actuator (3), the Y-axis actuator (4) and the Z-axis actuator (5). An X-axis play mechanism (6) is provided between the lens unit (1) and the X-axis actuator (3). A Y-axis play mechanism (7) is provided between the lens unit (1) and the Y-axis actuator (4). A Z-axis play mechanism (8) is provided between the lens unit (1) and the Z-axis actuator (5).

Description

レンズシステム及び照明システムLens system and lighting system
　本開示は、レンズシステム及び照明システムに関し、より詳細には、レンズを移動させることができるレンズシステム、及び、レンズシステムを備える照明システムに関する。 The present disclosure relates to a lens system and an illumination system, and more particularly to a lens system in which a lens can be moved, and an illumination system including a lens system.
　特許文献１には、レンズを駆動するレンズ駆動装置が開示されている。レンズ駆動装置は、レンズ駆動部を備える。レンズ駆動装置は、レンズ駆動部に取り付けられるレンズの光軸を有する。レンズ駆動部は、ベース部材、Ｘ軸可動体、Ｙ軸可動体、及びレンズキャリアを備える。ベース部材、Ｘ軸可動体、Ｙ軸可動体、及びレンズキャリアは、この順番で光軸方向に沿って並んでいる。レンズキャリアは、レンズを取り付けるためのレンズ取付部を有する。また、レンズ駆動装置は、Ｘ軸アクチュエータと、Ｙ軸アクチュエータと、キャリアアクチュエータと、を備える。 Patent Document 1 discloses a lens driving device that drives a lens. The lens drive device includes a lens drive section. The lens drive device has an optical axis of a lens attached to the lens drive section. The lens drive section includes a base member, an X-axis movable body, a Y-axis movable body, and a lens carrier. The base member, the X-axis movable body, the Y-axis movable body, and the lens carrier are arranged in this order along the optical axis direction. The lens carrier has a lens attachment part for attaching a lens. Further, the lens driving device includes an X-axis actuator, a Y-axis actuator, and a carrier actuator.
　レンズをＸ軸方向、Ｙ軸方向及びＺ軸方向それぞれに移動可能なレンズシステムでは、レンズを移動させるときの電線の屈曲、断線等により信頼性が低下することがある。 In a lens system in which the lens can be moved in each of the X-axis direction, Y-axis direction, and Z-axis direction, reliability may decrease due to bending or breakage of electric wires when moving the lens.
特開２０１８－１８０１８号公報JP 2018-18018 Publication
　本開示の目的は、信頼性の向上を図ることが可能なレンズシステム及び照明システムを提供することにある。 An object of the present disclosure is to provide a lens system and an illumination system that can improve reliability.
　本開示の一態様に係るレンズシステムは、レンズユニットと、筐体と、Ｘ軸用アクチュエータと、Ｙ軸用アクチュエータと、Ｚ軸用アクチュエータと、制御部と、Ｘ軸用遊び機構と、Ｙ軸用遊び機構と、Ｚ軸用遊び機構と、を備える。前記レンズユニットは、レンズと、前記レンズを保持しているレンズ保持部材と、を含む。前記筐体は、前記レンズユニットを収容している。前記Ｘ軸用アクチュエータは、前記筐体に固定されており、前記レンズユニットをＸ軸方向に移動させる。前記Ｙ軸用アクチュエータは、前記筐体に固定されており、前記レンズユニットを前記Ｘ軸方向に直交するＹ軸方向に移動させる。前記Ｚ軸用アクチュエータは、前記筐体に固定されており、前記レンズユニットを前記Ｘ軸方向と前記Ｙ軸方向とに直交するＺ軸方向に移動させる。前記制御部は、前記Ｘ軸用アクチュエータ、前記Ｙ軸用アクチュエータ及び前記Ｚ軸用アクチュエータを制御する。前記Ｘ軸用遊び機構は、前記レンズユニットと前記Ｘ軸用アクチュエータとの間に設けられている。前記Ｘ軸用遊び機構は、前記Ｙ軸方向にスライド可能な第１スライダ及び前記Ｚ軸方向にスライド可能な第２スライダを有する。前記Ｙ軸用遊び機構は、前記レンズユニットと前記Ｙ軸用アクチュエータとの間に設けられている。前記Ｙ軸用遊び機構は、前記Ｘ軸方向にスライド可能な第３スライダ及び前記Ｚ軸方向にスライド可能な第４スライダを有する。前記Ｚ軸用遊び機構は、前記レンズユニットと前記Ｚ軸用アクチュエータとの間に設けられている。前記Ｚ軸用遊び機構は、前記Ｘ軸方向にスライド可能な第５スライダ及び前記Ｙ軸方向にスライド可能な第６スライダを有する。 A lens system according to one aspect of the present disclosure includes a lens unit, a housing, an X-axis actuator, a Y-axis actuator, a Z-axis actuator, a control section, an X-axis play mechanism, and a Y-axis play mechanism. and a Z-axis play mechanism. The lens unit includes a lens and a lens holding member that holds the lens. The housing accommodates the lens unit. The X-axis actuator is fixed to the housing and moves the lens unit in the X-axis direction. The Y-axis actuator is fixed to the housing and moves the lens unit in the Y-axis direction perpendicular to the X-axis direction. The Z-axis actuator is fixed to the housing and moves the lens unit in a Z-axis direction perpendicular to the X-axis direction and the Y-axis direction. The control unit controls the X-axis actuator, the Y-axis actuator, and the Z-axis actuator. The X-axis play mechanism is provided between the lens unit and the X-axis actuator. The X-axis play mechanism includes a first slider that is slidable in the Y-axis direction and a second slider that is slidable in the Z-axis direction. The Y-axis play mechanism is provided between the lens unit and the Y-axis actuator. The Y-axis play mechanism includes a third slider that is slidable in the X-axis direction and a fourth slider that is slidable in the Z-axis direction. The Z-axis play mechanism is provided between the lens unit and the Z-axis actuator. The Z-axis play mechanism includes a fifth slider that is slidable in the X-axis direction and a sixth slider that is slidable in the Y-axis direction.
　本開示の一態様に係る照明システムは、光源と、前記レンズシステムと、を備える。前記レンズシステムは、前記Ｚ軸方向が前記光源の光軸と平行になるように配置されている。前記レンズの光入射面は、前記Ｚ軸方向において前記光源から離れている。 An illumination system according to one aspect of the present disclosure includes a light source and the lens system. The lens system is arranged such that the Z-axis direction is parallel to the optical axis of the light source. A light incident surface of the lens is separated from the light source in the Z-axis direction.
図１は、実施形態に係るレンズシステムを備える照明器具においてレンズが基準位置にあるときの平面図である。FIG. 1 is a plan view of a lighting fixture including a lens system according to an embodiment when the lens is at a reference position. 図２は、同上のレンズシステムを備える照明器具においてレンズが基準位置にあるときの正面図である。FIG. 2 is a front view of a lighting fixture including the same lens system as described above when the lens is at a reference position. 図３は、同上のレンズシステムを備える照明器具においてレンズが基準位置にあるときの側面図である。FIG. 3 is a side view of a lighting fixture including the same lens system as described above, when the lens is at the reference position. 図４は、同上のレンズシステムにおけるＸ軸用遊び機構、Ｙ軸用遊び機構、Ｚ軸用遊び機構の相対的な位置関係の説明図である。FIG. 4 is an explanatory diagram of the relative positional relationship of the X-axis play mechanism, the Y-axis play mechanism, and the Z-axis play mechanism in the same lens system. 図５Ａは、同上の照明システムにおいてレンズが基準位置にあるときの照明器具の配光の説明図である。図５Ｂは、同上の照明システムにおいてレンズを基準位置からＺ軸の負方向に移動させたときの照明器具の配光の説明図である。図５Ｃは、同上の照明システムにおいてレンズを基準位置からＺ軸の負方向及びＸ軸の正方向に移動させたときの照明器具の配光の説明図である。FIG. 5A is an explanatory diagram of the light distribution of the lighting device when the lens is at the reference position in the lighting system described above. FIG. 5B is an explanatory diagram of the light distribution of the lighting device when the lens is moved from the reference position in the negative direction of the Z-axis in the above lighting system. FIG. 5C is an explanatory diagram of the light distribution of the lighting device when the lens is moved from the reference position in the negative direction of the Z axis and the positive direction of the X axis in the same lighting system as above. 図６Ａは、同上のレンズシステムを備える照明器具の照明エリアの説明図である。図６Ｂは、同上のレンズシステムを備える照明器具の照明エリアの説明図である。FIG. 6A is an explanatory diagram of an illumination area of a lighting fixture including the same lens system as above. FIG. 6B is an explanatory diagram of an illumination area of a lighting fixture including the same lens system as above. 図７は、同上のレンズシステムを備える照明システムの構成図である。FIG. 7 is a configuration diagram of an illumination system including the same lens system as above. 図８は、同上のレンズシステムを備える照明器具の他の構成例を示す側面図である。FIG. 8 is a side view showing another configuration example of a lighting fixture including the same lens system as above.
　以下の実施形態等において参照する各図は、いずれも模式的な図であり、図中の各構成要素の大きさや厚さそれぞれの比が、必ずしも実際の寸法比を反映しているとは限らない。 Each of the figures referred to in the following embodiments, etc. is a schematic diagram, and the size and thickness ratios of each component in the figures do not necessarily reflect the actual dimensional ratios. do not have.
　（実施形態）
　以下、レンズシステム１００及びそれを備える照明システム２００について、図１～７に基づいて説明する。以下では一例として、互いに直交するＸ軸、Ｙ軸及びＺ軸の３軸を有する直交座標を規定し、特に、レンズ１１の光軸Ａ１１（図４参照）に沿った軸を「Ｚ軸」とし、Ｚ軸と直交する１つの軸を「Ｘ軸」とし、Ｚ軸及びＸ軸の両方と直交する軸を「Ｙ軸」とする。Ｘ軸、Ｙ軸、及びＺ軸は、いずれも仮想的な軸であり、図面中の「Ｘ」、「Ｙ」、「Ｚ」を示す矢印は、説明のために表記しているに過ぎず、いずれも実体を伴わない。また、これらの方向はレンズシステム１００の使用時の方向を限定する趣旨ではない。なお、上記直交座標の原点は、例えば、レンズ１１の光出射面とレンズ１１の光軸Ａ１１との交点に規定することができる。 (Embodiment)
Hereinafter, the lens system 100 and the illumination system 200 including the same will be explained based on FIGS. 1 to 7. In the following, as an example, orthogonal coordinates having three axes, the X-axis, Y-axis, and Z-axis that are orthogonal to each other, are defined, and in particular, the axis along the optical axis A11 of the lens 11 (see FIG. 4) is defined as the "Z-axis." , one axis perpendicular to the Z-axis is the "X-axis", and an axis perpendicular to both the Z-axis and the X-axis is the "Y-axis". The X-axis, Y-axis, and Z-axis are all virtual axes, and the arrows indicating "X,""Y," and "Z" in the drawings are only shown for explanation. , none of which involve substance. Further, these directions are not intended to limit the directions in which the lens system 100 is used. Note that the origin of the orthogonal coordinates can be defined, for example, at the intersection of the light exit surface of the lens 11 and the optical axis A11 of the lens 11.
　照明システム２００（図７参照）は、例えば、対象空間を照明する用途に使用される。対象空間は、例えば、施設内の空間である。施設は、例えば、オフィスビルである。施設は、例えば、戸建て住宅、集合住宅、店舗、美術館、ホテル、工場、スタジアム、空港等であってもよい。 The lighting system 200 (see FIG. 7) is used, for example, to illuminate a target space. The target space is, for example, a space within a facility. The facility is, for example, an office building. The facility may be, for example, a single-family house, an apartment complex, a store, a museum, a hotel, a factory, a stadium, an airport, or the like.
　（１）レンズシステム及び照明システムの概要
　レンズシステム１００は、図１～４に示すように、レンズユニット１と、筐体２と、Ｘ軸用アクチュエータ３と、Ｙ軸用アクチュエータ４と、Ｚ軸用アクチュエータ５と、Ｘ軸用遊び機構６と、Ｙ軸用遊び機構７と、Ｚ軸用遊び機構８と、制御部１０（図７参照）と、を備える。レンズユニット１は、レンズ１１と、レンズ１１を保持しているレンズ保持部材１２と、を含む。筐体２は、レンズユニット１を収容している。Ｘ軸用アクチュエータ３は、レンズユニット１をＸ軸方向に移動させる。Ｙ軸用アクチュエータ４は、レンズユニット１をＸ軸方向に直交するＹ軸方向に移動させる。Ｚ軸用アクチュエータ５は、レンズユニット１をＸ軸方向とＹ軸方向とに直交するＺ軸方向に移動させる。制御部１０は、Ｘ軸用アクチュエータ３、Ｙ軸用アクチュエータ４及びＺ軸用アクチュエータ５を制御する。Ｘ軸用遊び機構６は、レンズユニット１とＸ軸用アクチュエータ３との間に設けられている。Ｙ軸用遊び機構７は、レンズユニット１とＹ軸用アクチュエータ４との間に設けられている。Ｚ軸用遊び機構８は、レンズユニット１とＺ軸用アクチュエータ５との間に設けられている。なお、図２では、Ｘ軸用アクチュエータ３、Ｙ軸用アクチュエータ４、及びＺ軸用アクチュエータ５の図示を省略してある。また、図３では、筐体２、Ｘ軸用アクチュエータ３、及びＹ軸用アクチュエータ４の図示を省略してある。 (1) Overview of lens system and illumination system As shown in FIGS. 1 to 4, the lens system 100 includes a lens unit 1, a housing 2, an X-axis actuator 3, a Y-axis actuator 4, and a Z-axis actuator 5, an X-axis play mechanism 6, a Y-axis play mechanism 7, a Z-axis play mechanism 8, and a control section 10 (see FIG. 7). The lens unit 1 includes a lens 11 and a lens holding member 12 holding the lens 11. The housing 2 houses the lens unit 1. The X-axis actuator 3 moves the lens unit 1 in the X-axis direction. The Y-axis actuator 4 moves the lens unit 1 in the Y-axis direction orthogonal to the X-axis direction. The Z-axis actuator 5 moves the lens unit 1 in the Z-axis direction orthogonal to the X-axis direction and the Y-axis direction. The control unit 10 controls the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5. The X-axis play mechanism 6 is provided between the lens unit 1 and the X-axis actuator 3. The Y-axis play mechanism 7 is provided between the lens unit 1 and the Y-axis actuator 4. The Z-axis play mechanism 8 is provided between the lens unit 1 and the Z-axis actuator 5. In addition, in FIG. 2, illustration of the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5 is omitted. Further, in FIG. 3, illustration of the housing 2, the X-axis actuator 3, and the Y-axis actuator 4 is omitted.
　また、レンズシステム１００は、図１に示すように、第１連結板９１と、第２連結板９２と、第３連結板９３と、を更に備える。第１連結板９１は、Ｘ軸用アクチュエータ３とＸ軸用遊び機構６とを連結している。第２連結板９２は、Ｙ軸用アクチュエータ４とＹ軸用遊び機構７とを連結している。第３連結板９３は、Ｚ軸用アクチュエータ５とＺ軸用遊び機構８とを連結している。 Further, as shown in FIG. 1, the lens system 100 further includes a first connecting plate 91, a second connecting plate 92, and a third connecting plate 93. The first connecting plate 91 connects the X-axis actuator 3 and the X-axis play mechanism 6. The second connecting plate 92 connects the Y-axis actuator 4 and the Y-axis play mechanism 7. The third connecting plate 93 connects the Z-axis actuator 5 and the Z-axis play mechanism 8.
　照明システム２００は、図７に示すように、光源２０１と、レンズシステム１００と、を備える。 The illumination system 200 includes a light source 201 and a lens system 100, as shown in FIG.
　（２）詳細
　（２．１）レンズシステム
　以下、実施形態に係るレンズシステム１００について、図１～７を参照して、より詳細に説明する。 (2) Details (2.1) Lens System The lens system 100 according to the embodiment will be described in more detail below with reference to FIGS. 1 to 7.
　（２．１．１）レンズユニット
　レンズユニット１は、図１～３に示すように、レンズ１１と、レンズ１１を保持しているレンズ保持部材１２と、を含む。 (2.1.1) Lens Unit The lens unit 1 includes a lens 11 and a lens holding member 12 holding the lens 11, as shown in FIGS. 1 to 3.
　レンズ１１は、例えば、集光レンズである。レンズ１１は、例えば、照明システム２００（図７参照）の光源２０１から放射される光を集光する。レンズ１１は、例えば、両凸レンズである（図２参照）。 The lens 11 is, for example, a condenser lens. The lens 11 collects light emitted from the light source 201 of the illumination system 200 (see FIG. 7), for example. The lens 11 is, for example, a biconvex lens (see FIG. 2).
　レンズ１１は、光入射面になる第１面１１１（図２参照）及び光出射面になる第２面１１２を有するレンズ部１１０と、レンズ部１１０からレンズ径方向に突出している複数（例えば、４つ）の鍔部１１３と、を有する。 The lens 11 includes a lens portion 110 having a first surface 111 (see FIG. 2) serving as a light entrance surface and a second surface 112 serving as a light exit surface, and a plurality of lenses (for example, 4) collar portions 113.
　平面視で、レンズ保持部材１２の外縁１２０は、例えば、円形状である。「平面視で」とは、「レンズ１１の光軸Ａ１１に沿った方向においてレンズ１１の下側から見て」と同じ意味である。言い換えれば、「平面視で」とは、「レンズ１１の厚さ方向からの平面視で」と同じ意味である。 In plan view, the outer edge 120 of the lens holding member 12 has, for example, a circular shape. "In plan view" has the same meaning as "viewed from below the lens 11 in the direction along the optical axis A11 of the lens 11". In other words, "in plan view" has the same meaning as "in plan view from the thickness direction of the lens 11."
　レンズ保持部材１２は、レンズ１１の第１面１１１及び第２面１１２を露出させる窓孔１２３を有する。窓孔１２３の開口形状は、例えば、円形状であるが、これに限らず、例えば、楕円形状でもよい。レンズ保持部材１２は、第１面１２１（図２参照）及び第２面１２２を有する。レンズ保持部材１２は、第１面１２１がレンズ１１の第１面１１１側に位置し、第２面１２２がレンズ１１の第２面１１２側に位置している。また、レンズ保持部材１２は、可視光に対する遮光性を有する。 The lens holding member 12 has a window hole 123 that exposes the first surface 111 and the second surface 112 of the lens 11. The opening shape of the window hole 123 is, for example, circular, but is not limited to this, and may be, for example, elliptical. The lens holding member 12 has a first surface 121 (see FIG. 2) and a second surface 122. In the lens holding member 12, the first surface 121 is located on the first surface 111 side of the lens 11, and the second surface 122 is located on the second surface 112 side of the lens 11. Further, the lens holding member 12 has a light shielding property against visible light.
　（２．１．２）筐体
　筐体２は、レンズユニット１を収容している。筐体２は、底板部２１と、筒部２２と、フランジ部２３と、を有する。底板部２１は、平板状である。筒部２２は、底板部２１の一面の周部から底板部２１の厚さ方向に突出しており、レンズユニット１を囲んでいる。筐体２では、例えば、底板部２１と筒部２２とフランジ部２３とが一体に形成されている。筐体２の形状は、有底円筒状である。平面視で、筐体２の外縁は、円形状である。 (2.1.2) Housing The housing 2 houses the lens unit 1. The housing 2 includes a bottom plate portion 21, a cylindrical portion 22, and a flange portion 23. The bottom plate portion 21 has a flat plate shape. The cylindrical portion 22 protrudes from the periphery of one surface of the bottom plate portion 21 in the thickness direction of the bottom plate portion 21 and surrounds the lens unit 1 . In the housing 2, for example, a bottom plate portion 21, a cylinder portion 22, and a flange portion 23 are integrally formed. The shape of the housing 2 is a cylindrical shape with a bottom. In plan view, the outer edge of the housing 2 has a circular shape.
　筐体２の材料は、例えば、アルミニウムであるが、これに限らず、例えば、アルミニウム合金、ステンレス鋼又は合成樹脂であってもよい。 The material of the housing 2 is, for example, aluminum, but is not limited thereto, and may be, for example, an aluminum alloy, stainless steel, or synthetic resin.
　（２．１．３）Ｘ軸用アクチュエータ
　Ｘ軸用アクチュエータ３（図１参照）は、筐体２に固定されており、レンズユニット１をＸ軸方向に移動させる。「レンズユニット１をＸ軸方向に移動させる」とは、レンズユニット１をＸ軸の正方向又は負方向に移動させることを意味する。 (2.1.3) X-axis actuator The X-axis actuator 3 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the X-axis direction. "Moving the lens unit 1 in the X-axis direction" means moving the lens unit 1 in the positive or negative direction of the X-axis.
　Ｘ軸用アクチュエータ３は、電動アクチュエータである。より詳細には、Ｘ軸用アクチュエータ３は、図１に示すように、第１ステッピングモータ３１と、第１軸継手と、第１送りねじ機構３２と、を有する。第１送りねじ機構３２は、第１ステッピングモータ３１の回転運動を直線運動に変換する機能を有する。 The X-axis actuator 3 is an electric actuator. More specifically, as shown in FIG. 1, the X-axis actuator 3 includes a first stepping motor 31, a first shaft joint, and a first feed screw mechanism 32. The first feed screw mechanism 32 has a function of converting the rotational motion of the first stepping motor 31 into linear motion.
　第１送りねじ機構３２は、第１ステッピングモータ３１の回転軸に連結されている。第１ステッピングモータ３１は、制御部１０（図７参照）によって制御される。第１ステッピングモータ３１は、複数の第１電線が接続されており、複数の第１電線等によって制御部１０に接続されている。 The first feed screw mechanism 32 is connected to the rotating shaft of the first stepping motor 31. The first stepping motor 31 is controlled by the control section 10 (see FIG. 7). The first stepping motor 31 is connected to a plurality of first electric wires, and is connected to the control unit 10 by the plurality of first electric wires.
　第１送りねじ機構３２は、例えば、第１ねじ軸３２１と、第１ナット３２２と、第１ガイド軸３２３と、第１保持部材３２４と、を含む。第１送りねじ機構３２では、第１ねじ軸３２１が回転することにより、第１ナット３２２が直線移動する。第１送りねじ機構３２は、例えば、ボールねじ機構であり、第１ナット３２２のねじ溝と第１ねじ軸３２１との間に介在し転動可能な鋼球を有している。 The first feed screw mechanism 32 includes, for example, a first screw shaft 321, a first nut 322, a first guide shaft 323, and a first holding member 324. In the first feed screw mechanism 32, as the first screw shaft 321 rotates, the first nut 322 moves linearly. The first feed screw mechanism 32 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the first nut 322 and the first screw shaft 321.
　第１ねじ軸３２１は、第１軸継手によって第１ステッピングモータ３１の回転軸と連結されている。 The first screw shaft 321 is connected to the rotating shaft of the first stepping motor 31 through a first shaft joint.
　第１保持部材３２４は、中央片３２４０と、第１保持片３２４１と、第２保持片３２４２と、を含む。中央片３２４０は、第１ねじ軸３２１の軸方向に沿った方向を長手方向とする略長方形状である。第１保持片３２４１は、中央片３２４０の長手方向の第１端から中央片３２４０の厚さ方向に突出している。第２保持片３２４２は、中央片３２４０の長手方向の第２端から第１保持片３２４１と同じ向きに突出している。第１保持片３２４１は、第１ねじ軸３２１の第１端を回転可能に保持する第１軸受を含む。第２保持片３２４２は、第１ねじ軸３２１の第２端を回転可能に保持する第２軸受を含む。 The first holding member 324 includes a center piece 3240, a first holding piece 3241, and a second holding piece 3242. The center piece 3240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the first screw shaft 321 . The first holding piece 3241 protrudes from the first end of the center piece 3240 in the longitudinal direction in the thickness direction of the center piece 3240. The second holding piece 3242 protrudes from the second end of the central piece 3240 in the longitudinal direction in the same direction as the first holding piece 3241. The first holding piece 3241 includes a first bearing that rotatably holds the first end of the first screw shaft 321. The second holding piece 3242 includes a second bearing that rotatably holds the second end of the first screw shaft 321.
　第１ガイド軸３２３は、丸棒状であり、第１保持片３２４１と第２保持片３２４２との間で、第１ねじ軸３２１と平行になるように配置されている。 The first guide shaft 323 has a round bar shape and is arranged between the first holding piece 3241 and the second holding piece 3242 so as to be parallel to the first screw shaft 321.
　Ｘ軸用アクチュエータ３では、第１保持部材３２４が筐体２に固定されている。 In the X-axis actuator 3, the first holding member 324 is fixed to the housing 2.
　（２．１．４）Ｙ軸用アクチュエータ
　Ｙ軸用アクチュエータ４（図１参照）は、筐体２に固定されており、レンズユニット１をＹ軸方向に移動させる。「レンズユニット１をＹ軸方向に移動させる」とは、レンズユニット１をＹ軸の正方向又は負方向に移動させることを意味する。 (2.1.4) Y-axis actuator The Y-axis actuator 4 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the Y-axis direction. "Moving the lens unit 1 in the Y-axis direction" means moving the lens unit 1 in the positive or negative direction of the Y-axis.
　Ｙ軸用アクチュエータ４は、電動アクチュエータである。より詳細には、Ｙ軸用アクチュエータ４は、図１に示すように、第２ステッピングモータ４１と、第２軸継手と、第２送りねじ機構４２と、を有する。第２送りねじ機構４２は、第２ステッピングモータ４１の回転運動を直線運動に変換する機能を有する。 The Y-axis actuator 4 is an electric actuator. More specifically, as shown in FIG. 1, the Y-axis actuator 4 includes a second stepping motor 41, a second shaft joint, and a second feed screw mechanism 42. The second feed screw mechanism 42 has a function of converting the rotational motion of the second stepping motor 41 into linear motion.
　第２送りねじ機構４２は、第２ステッピングモータ４１の回転軸に連結されている。第２ステッピングモータ４１は、制御部１０（図７参照）によって制御される。第２ステッピングモータ４１は、複数の第２電線が接続されており、複数の第２電線等によって制御部１０に接続されている。 The second feed screw mechanism 42 is connected to the rotating shaft of the second stepping motor 41. The second stepping motor 41 is controlled by the control section 10 (see FIG. 7). The second stepping motor 41 is connected to a plurality of second electric wires, and is connected to the control unit 10 by the plurality of second electric wires.
　第２送りねじ機構４２は、例えば、第２ねじ軸４２１と、第２ナット４２２と、第２ガイド軸４２３と、第２保持部材４２４と、を含む。第２送りねじ機構４２では、第２ねじ軸４２１が回転することにより、第２ナット４２２が直線移動する。第２送りねじ機構４２は、例えば、ボールねじ機構であり、第２ナット４２２のねじ溝と第２ねじ軸４２１との間に介在し転動可能な鋼球を有している。 The second feed screw mechanism 42 includes, for example, a second screw shaft 421, a second nut 422, a second guide shaft 423, and a second holding member 424. In the second feed screw mechanism 42, as the second screw shaft 421 rotates, the second nut 422 moves linearly. The second feed screw mechanism 42 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the second nut 422 and the second screw shaft 421.
　第２ねじ軸４２１は、第２軸継手によって第２ステッピングモータ４１の回転軸と連結されている。 The second screw shaft 421 is connected to the rotating shaft of the second stepping motor 41 by a second shaft joint.
　第２保持部材４２４は、中央片４２４０と、第１保持片４２４１と、第２保持片４２４２と、を含む。中央片４２４０は、第２ねじ軸４２１の軸方向に沿った方向を長手方向とする略長方形状である。第１保持片４２４１は、中央片４２４０の長手方向の第１端から中央片４２４０の厚さ方向に突出している。第２保持片４２４２は、中央片４２４０の長手方向の第２端から第１保持片４２４１と同じ向きに突出している。第１保持片４２４１は、第２ねじ軸４２１の第１端を回転可能に保持する第１軸受を含む。第２保持片４２４２は、第２ねじ軸４２１の第２端を回転可能に保持する第２軸受を含む。 The second holding member 424 includes a center piece 4240, a first holding piece 4241, and a second holding piece 4242. The center piece 4240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the second screw shaft 421 . The first holding piece 4241 protrudes from the first end of the center piece 4240 in the longitudinal direction in the thickness direction of the center piece 4240. The second holding piece 4242 protrudes from the second end of the center piece 4240 in the longitudinal direction in the same direction as the first holding piece 4241. The first holding piece 4241 includes a first bearing that rotatably holds the first end of the second screw shaft 421. The second holding piece 4242 includes a second bearing that rotatably holds the second end of the second screw shaft 421.
　第２ガイド軸４２３は、丸棒状であり、第１保持片４２４１と第２保持片４２４２との間で、第２ねじ軸４２１と平行になるように配置されている。 The second guide shaft 423 has a round bar shape and is arranged between the first holding piece 4241 and the second holding piece 4242 so as to be parallel to the second screw shaft 421.
　Ｙ軸用アクチュエータ４では、第２保持部材４２４が筐体２に固定されている。 In the Y-axis actuator 4, the second holding member 424 is fixed to the housing 2.
　（２．１．５）Ｚ軸用アクチュエータ
　Ｚ軸用アクチュエータ５（図１参照）は、筐体２に固定されており、レンズユニット１をＺ軸方向に移動させる。「レンズユニット１をＺ軸方向に移動させる」とは、レンズユニット１をＺ軸の正方向又は負方向に移動させることを意味する。 (2.1.5) Z-axis actuator The Z-axis actuator 5 (see FIG. 1) is fixed to the housing 2 and moves the lens unit 1 in the Z-axis direction. "Moving the lens unit 1 in the Z-axis direction" means moving the lens unit 1 in the positive or negative direction of the Z-axis.
　Ｚ軸用アクチュエータ５は、電動アクチュエータである。より詳細には、Ｚ軸用アクチュエータ５は、図３に示すように、第３ステッピングモータ５１と、第３軸継手と、第３送りねじ機構５２と、を有する。第３送りねじ機構５２は、第３ステッピングモータ５１の回転運動を直線運動に変換する機能を有する。 The Z-axis actuator 5 is an electric actuator. More specifically, as shown in FIG. 3, the Z-axis actuator 5 includes a third stepping motor 51, a third shaft joint, and a third feed screw mechanism 52. The third feed screw mechanism 52 has a function of converting the rotational motion of the third stepping motor 51 into linear motion.
　第３送りねじ機構５２は、第３ステッピングモータ５１の回転軸に連結されている。第３ステッピングモータ５１は、制御部１０（図７参照）によって制御される。第３ステッピングモータ５１は、複数の第３電線が接続されており、複数の第３電線等によって制御部１０に接続されている。 The third feed screw mechanism 52 is connected to the rotating shaft of the third stepping motor 51. The third stepping motor 51 is controlled by the control section 10 (see FIG. 7). The third stepping motor 51 is connected to a plurality of third electric wires, and is connected to the control unit 10 by the plurality of third electric wires.
　第３送りねじ機構５２は、例えば、第３ねじ軸５２１と、第３ナット５２２と、第３ガイド軸５２３と、第３保持部材５２４と、を含む。第３送りねじ機構５２では、第３ねじ軸５２１が回転することにより、第３ナット５２２が直線移動する。第３送りねじ機構５２は、例えば、ボールねじ機構であり、第３ナット５２２のねじ溝と第３ねじ軸５２１との間に介在し転動可能な鋼球を有している。 The third feed screw mechanism 52 includes, for example, a third screw shaft 521, a third nut 522, a third guide shaft 523, and a third holding member 524. In the third feed screw mechanism 52, as the third screw shaft 521 rotates, the third nut 522 moves linearly. The third feed screw mechanism 52 is, for example, a ball screw mechanism, and includes a rolling steel ball interposed between the thread groove of the third nut 522 and the third screw shaft 521.
　第３ねじ軸５２１は、第３軸継手によって第３ステッピングモータ５１の回転軸と連結されている。 The third screw shaft 521 is connected to the rotating shaft of the third stepping motor 51 by a third shaft joint.
　第３保持部材５２４は、中央片５２４０と、第１保持片５２４１と、第２保持片５２４２と、を含む。中央片５２４０は、第３ねじ軸５２１の軸方向に沿った方向を長手方向とする略長方形状である。第１保持片５２４１は、中央片５２４０の長手方向の第１端から中央片５２４０の厚さ方向に突出している。第２保持片５２４２は、中央片５２４０の長手方向の第２端から第１保持片５２４１と同じ向きに突出している。第１保持片５２４１は、第３ねじ軸５２１の第１端を回転可能に保持する第１軸受を含む。第２保持片５２４２は、第３ねじ軸５２１の第２端を回転可能に保持する第２軸受を含む。 The third holding member 524 includes a center piece 5240, a first holding piece 5241, and a second holding piece 5242. The center piece 5240 has a substantially rectangular shape whose longitudinal direction is along the axial direction of the third screw shaft 521. The first holding piece 5241 protrudes from the first end of the center piece 5240 in the longitudinal direction in the thickness direction of the center piece 5240. The second holding piece 5242 protrudes from the second end of the center piece 5240 in the longitudinal direction in the same direction as the first holding piece 5241. The first holding piece 5241 includes a first bearing that rotatably holds the first end of the third screw shaft 521. The second holding piece 5242 includes a second bearing that rotatably holds the second end of the third screw shaft 521.
　第３ガイド軸５２３は、丸棒状であり、第１保持片５２４１と第２保持片５２４２との間で、第３ねじ軸５２１と平行になるように配置されている。 The third guide shaft 523 has a round bar shape and is arranged between the first holding piece 5241 and the second holding piece 5242 so as to be parallel to the third screw shaft 521.
　Ｚ軸用アクチュエータ５では、第３保持部材５２４が筐体２に固定されている。 In the Z-axis actuator 5, a third holding member 524 is fixed to the housing 2.
　（２．１．６）Ｘ軸用遊び機構
　Ｘ軸用遊び機構６は、図１に示すように、レンズユニット１とＸ軸用アクチュエータ３との間に設けられている。より詳細には、Ｘ軸用遊び機構６は、レンズユニット１に連結されており、かつ、第１連結板９１を介してＸ軸用アクチュエータ３に連結されている。Ｘ軸用遊び機構６は、レンズ保持部材１２の第１面１２１（図２参照）に固定されている直方体状の取付部１６に連結されている。Ｘ軸用遊び機構６は、図１及び２に示すように、Ｙ軸方向にスライド可能な第１スライダ６１及びＺ軸方向にスライド可能な第２スライダ６２を有する。「Ｙ軸方向にスライド可能」とは、Ｙ軸の正方向及び負方向にスライド可能であることを意味する。「Ｚ軸方向にスライド可能」とは、Ｚ軸の正方向及び負方向にスライド可能であることを意味する。また、Ｘ軸用遊び機構６は、第１スライドガイド６３と、第２スライドガイド６４と、を更に有する。第１スライドガイド６３は、第１スライダ６１をＹ軸方向にスライド自在に保持する。Ｘ軸用遊び機構６は、第１スライダ６１と第１スライドガイド６３との間に介在する第１鋼球を有する。要するに、Ｘ軸用遊び機構６は、第１スライダ６１と第１スライドガイド６３と第１鋼球とを含む第１ボールスライドガイド機構を有する。第２スライドガイド６４は、第２スライダ６２をＺ軸方向にスライド自在に保持する。Ｘ軸用遊び機構６は、第２スライダ６２と第２スライドガイド６４との間に介在する第２鋼球を有する。要するに、Ｘ軸用遊び機構６は、第２スライダ６２と第２スライドガイド６４と第２鋼球とを含む第２ボールスライドガイド機構を有する。Ｘ軸用遊び機構６では、例えば、第１スライドガイド６３と第２スライダ６２とが結合されている。Ｘ軸用遊び機構６では、第１スライダ６１がレンズユニット１に固定されており、第２スライドガイド６４が第１連結板９１を介してＸ軸用アクチュエータ３の第１ナット３２２に固定されている。 (2.1.6) X-axis play mechanism The X-axis play mechanism 6 is provided between the lens unit 1 and the X-axis actuator 3, as shown in FIG. More specifically, the X-axis play mechanism 6 is connected to the lens unit 1, and is also connected to the X-axis actuator 3 via the first connection plate 91. The X-axis play mechanism 6 is connected to a rectangular parallelepiped-shaped mounting portion 16 fixed to the first surface 121 (see FIG. 2) of the lens holding member 12. As shown in FIGS. 1 and 2, the X-axis play mechanism 6 includes a first slider 61 that is slidable in the Y-axis direction and a second slider 62 that is slidable in the Z-axis direction. "Slidable in the Y-axis direction" means capable of sliding in the positive and negative directions of the Y-axis. "Slidable in the Z-axis direction" means that it is slidable in the positive and negative directions of the Z-axis. Furthermore, the X-axis play mechanism 6 further includes a first slide guide 63 and a second slide guide 64. The first slide guide 63 holds the first slider 61 slidably in the Y-axis direction. The X-axis play mechanism 6 includes a first steel ball interposed between a first slider 61 and a first slide guide 63. In short, the X-axis play mechanism 6 has a first ball slide guide mechanism including a first slider 61, a first slide guide 63, and a first steel ball. The second slide guide 64 holds the second slider 62 slidably in the Z-axis direction. The X-axis play mechanism 6 includes a second steel ball interposed between a second slider 62 and a second slide guide 64. In short, the X-axis play mechanism 6 has a second ball slide guide mechanism including a second slider 62, a second slide guide 64, and a second steel ball. In the X-axis play mechanism 6, for example, a first slide guide 63 and a second slider 62 are coupled. In the X-axis play mechanism 6, the first slider 61 is fixed to the lens unit 1, and the second slide guide 64 is fixed to the first nut 322 of the X-axis actuator 3 via the first connecting plate 91. There is.
　（２．１．７）Ｙ軸用遊び機構
　Ｙ軸用遊び機構７は、図１に示すように、レンズユニット１とＹ軸用アクチュエータ４との間に設けられている。より詳細には、Ｙ軸用遊び機構７は、レンズユニット１に連結されており、かつ、第２連結板９２を介してＹ軸用アクチュエータ４に連結されている。Ｙ軸用遊び機構７は、レンズ保持部材１２の第１面１２１（図２参照）に固定されている直方体状の第２取付部１７に連結されている。Ｙ軸用遊び機構７は、Ｘ軸方向にスライド可能な第３スライダ７１及びＺ軸方向にスライド可能な第４スライダ７２を有する。「Ｘ軸方向にスライド可能」とは、Ｘ軸の正方向及び負方向にスライド可能であることを意味する。また、Ｙ軸用遊び機構７は、第３スライドガイド７３と、第４スライドガイド７４と、を更に有する。第３スライドガイド７３は、第３スライダ７１をＸ軸方向にスライド自在に保持する。Ｙ軸用遊び機構７は、第３スライダ７１と第３スライドガイド７３との間に介在する第３鋼球を有する。要するに、Ｙ軸用遊び機構７は、第３スライダ７１と第３スライドガイド７３と第３鋼球とを含む第３ボールスライドガイド機構を有する。第４スライドガイド７４は、第４スライダ７２をＺ軸方向にスライド自在に保持する。Ｙ軸用遊び機構７は、第４スライダ７２と第４スライドガイド７４との間に介在する第４鋼球を有する。要するに、Ｙ軸用遊び機構７は、第４スライダ７２と第４スライドガイド７４と第４鋼球とを含む第４ボールスライドガイド機構を有する。Ｙ軸用遊び機構７では、例えば、第３スライドガイド７３と第４スライダ７２とが結合されている。Ｙ軸用遊び機構７では、第３スライダ７１がレンズユニット１に固定されており、第４スライドガイド７４が第２連結板９２を介してＹ軸用アクチュエータ４の第２ナット４２２に固定されている。 (2.1.7) Y-axis play mechanism The Y-axis play mechanism 7 is provided between the lens unit 1 and the Y-axis actuator 4, as shown in FIG. More specifically, the Y-axis play mechanism 7 is connected to the lens unit 1, and is also connected to the Y-axis actuator 4 via the second connection plate 92. The Y-axis play mechanism 7 is connected to a rectangular parallelepiped-shaped second mounting portion 17 fixed to the first surface 121 (see FIG. 2) of the lens holding member 12. The Y-axis play mechanism 7 includes a third slider 71 that is slidable in the X-axis direction and a fourth slider 72 that is slidable in the Z-axis direction. "Slidable in the X-axis direction" means capable of sliding in the positive and negative directions of the X-axis. Moreover, the Y-axis play mechanism 7 further includes a third slide guide 73 and a fourth slide guide 74. The third slide guide 73 holds the third slider 71 slidably in the X-axis direction. The Y-axis play mechanism 7 includes a third steel ball interposed between a third slider 71 and a third slide guide 73. In short, the Y-axis play mechanism 7 has a third ball slide guide mechanism including a third slider 71, a third slide guide 73, and a third steel ball. The fourth slide guide 74 holds the fourth slider 72 slidably in the Z-axis direction. The Y-axis play mechanism 7 includes a fourth steel ball interposed between a fourth slider 72 and a fourth slide guide 74. In short, the Y-axis play mechanism 7 has a fourth ball slide guide mechanism including a fourth slider 72, a fourth slide guide 74, and a fourth steel ball. In the Y-axis play mechanism 7, for example, a third slide guide 73 and a fourth slider 72 are coupled. In the Y-axis play mechanism 7, the third slider 71 is fixed to the lens unit 1, and the fourth slide guide 74 is fixed to the second nut 422 of the Y-axis actuator 4 via the second connecting plate 92. There is.
　（２．１．８）Ｚ軸用遊び機構
　Ｚ軸用遊び機構８は、図１及び３に示すように、レンズユニット１とＺ軸用アクチュエータ５との間に設けられている。より詳細には、Ｚ軸用遊び機構８は、レンズユニット１に連結されており、かつ、第３連結板９３を介してＺ軸用アクチュエータ５に連結されている。Ｚ軸用遊び機構８は、レンズ保持部材１２の第１面１２１（図３参照）に固定されている直方体状の第３取付部１８に連結されている。Ｚ軸用遊び機構８は、Ｘ軸方向にスライド可能な第５スライダ８１及びＹ軸方向にスライド可能な第６スライダ８２を有する。また、Ｚ軸用遊び機構８は、第５スライドガイド８３と、第６スライドガイド８４と、を更に有する。第５スライドガイド８３は、第５スライダ８１をＸ軸方向にスライド自在に保持する。Ｚ軸用遊び機構８は、第５スライダ８１と第５スライドガイド８３との間に介在する第５鋼球を有する。要するに、Ｚ軸用遊び機構８は、第５スライダ８１と第５スライドガイド８３と第５鋼球とを含む第５ボールスライドガイド機構を有する。第６スライドガイド８４は、第６スライダ８２をＹ軸方向にスライド自在に保持する。Ｚ軸用遊び機構８は、第６スライダ８２と第６スライドガイド８４との間に介在する第６鋼球を有する。要するに、Ｚ軸用遊び機構８は、第６スライダ８２と第６スライドガイド８４と第６鋼球とを含む第６ボールスライドガイド機構を有する。Ｚ軸用遊び機構８では、例えば、第５スライドガイド８３と第６スライダ８２とが結合されている。Ｚ軸用遊び機構８では、第５スライダ８１がレンズユニット１に固定されており、第６スライドガイド８４が第３連結板９３を介してＺ軸用アクチュエータ５の第３ナット５２２に固定されている。 (2.1.8) Z-axis play mechanism The Z-axis play mechanism 8 is provided between the lens unit 1 and the Z-axis actuator 5, as shown in FIGS. 1 and 3. More specifically, the Z-axis play mechanism 8 is connected to the lens unit 1 and is also connected to the Z-axis actuator 5 via the third connecting plate 93. The Z-axis play mechanism 8 is connected to a rectangular parallelepiped-shaped third mounting portion 18 fixed to the first surface 121 (see FIG. 3) of the lens holding member 12. The Z-axis play mechanism 8 includes a fifth slider 81 that is slidable in the X-axis direction and a sixth slider 82 that is slidable in the Y-axis direction. Moreover, the Z-axis play mechanism 8 further includes a fifth slide guide 83 and a sixth slide guide 84. The fifth slide guide 83 holds the fifth slider 81 slidably in the X-axis direction. The Z-axis play mechanism 8 includes a fifth steel ball interposed between a fifth slider 81 and a fifth slide guide 83. In short, the Z-axis play mechanism 8 has a fifth ball slide guide mechanism including a fifth slider 81, a fifth slide guide 83, and a fifth steel ball. The sixth slide guide 84 holds the sixth slider 82 slidably in the Y-axis direction. The Z-axis play mechanism 8 has a sixth steel ball interposed between a sixth slider 82 and a sixth slide guide 84. In short, the Z-axis play mechanism 8 has a sixth ball slide guide mechanism including a sixth slider 82, a sixth slide guide 84, and a sixth steel ball. In the Z-axis play mechanism 8, for example, a fifth slide guide 83 and a sixth slider 82 are coupled. In the Z-axis play mechanism 8, the fifth slider 81 is fixed to the lens unit 1, and the sixth slide guide 84 is fixed to the third nut 522 of the Z-axis actuator 5 via the third connecting plate 93. There is.
　（２．１．９）第１連結板、第２連結板、第３連結板
　第１連結板９１（図１参照）は、例えば、長尺の板状であり、長手方向の第１端及び第２端を有する。第１連結板９１の第１端は、Ｘ軸用アクチュエータ３の第１ナット３２２に固定されており、第１連結板９１の第２端は、Ｘ軸用遊び機構６の第２スライドガイド６４に固定されている。 (2.1.9) First connecting plate, second connecting plate, third connecting plate The first connecting plate 91 (see FIG. 1) has a long plate shape, and has a first end in the longitudinal direction and It has a second end. The first end of the first connecting plate 91 is fixed to the first nut 322 of the X-axis actuator 3, and the second end of the first connecting plate 91 is fixed to the second slide guide 64 of the X-axis play mechanism 6. is fixed.
　第２連結板９２（図１参照）は、例えば、長尺の板状であり、長手方向の第１端及び第２端を有する。第２連結板９２の第１端は、Ｙ軸用アクチュエータ４の第２ナット４２２に固定されており、第２連結板９２の第２端は、Ｙ軸用遊び機構７の第４スライドガイド７４に固定されている。 The second connecting plate 92 (see FIG. 1) is, for example, in the shape of a long plate, and has a first end and a second end in the longitudinal direction. The first end of the second connecting plate 92 is fixed to the second nut 422 of the Y-axis actuator 4, and the second end of the second connecting plate 92 is fixed to the fourth slide guide 74 of the Y-axis play mechanism 7. is fixed.
　第３連結板９３（図３参照）は、例えば、長尺の板状であり、長手方向の第１端及び第２端を有する。第３連結板９３の第１端は、Ｚ軸用アクチュエータ５の第３ナット５２２に固定されており、第３連結板９３の第２端は、Ｚ軸用遊び機構８の第６スライドガイド８４に固定されている。 The third connecting plate 93 (see FIG. 3) has, for example, a long plate shape, and has a first end and a second end in the longitudinal direction. The first end of the third connecting plate 93 is fixed to the third nut 522 of the Z-axis actuator 5, and the second end of the third connecting plate 93 is fixed to the sixth slide guide 84 of the Z-axis play mechanism 8. is fixed.
　（２．１．１０）制御部
　制御部１０（図７参照）は、Ｘ軸用アクチュエータ３、Ｙ軸用アクチュエータ４及びＺ軸用アクチュエータ５を制御する。より詳細には、制御部１０は、第１ステッピングモータ３１、第２ステッピングモータ４１及び第３ステッピングモータ５１を制御する。制御部１０は、例えば、外部装置３００（図７参照）等からの外部信号に基づいて、第１ステッピングモータ３１、第２ステッピングモータ４１及び第３ステッピングモータ５１を制御する。外部装置３００は、例えば、リモートコントローラ又は人体検知器であるが、これらに限らない。 (2.1.10) Control Unit The control unit 10 (see FIG. 7) controls the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5. More specifically, the control unit 10 controls the first stepping motor 31, the second stepping motor 41, and the third stepping motor 51. The control unit 10 controls the first stepping motor 31, the second stepping motor 41, and the third stepping motor 51 based on, for example, an external signal from an external device 300 (see FIG. 7). External device 300 is, for example, a remote controller or a human body detector, but is not limited to these.
　制御部１０は、コンピュータシステムを含んでいる。コンピュータシステムは、ハードウェアとしてのプロセッサ及びメモリを主構成とする。コンピュータシステムのメモリに記録されたプログラムをプロセッサが実行することによって、本開示における制御部１０としての機能が実現される。プログラムは、コンピュータシステムのメモリに予め記録されてもよく、電気通信回線を通じて提供されてもよく、コンピュータシステムで読み取り可能なメモリカード、光学ディスク、ハードディスクドライブ等の非一時的記録媒体に記録されて提供されてもよい。コンピュータシステムのプロセッサは、半導体集積回路（ＩＣ）又は大規模集積回路（ＬＳＩ）を含む１ないし複数の電子回路で構成される。ここでいうＩＣ又はＬＳＩ等の集積回路は、集積の度合いによって呼び方が異なっており、システムＬＳＩ、ＶＬＳＩ（Very Large Scale Integration）、又はＵＬＳＩ（Ultra Large Scale Integration）と呼ばれる集積回路を含む。さらに、ＬＳＩの製造後にプログラムされる、ＦＰＧＡ（Field-Programmable Gate Array）、又はＬＳＩ内部の接合関係の再構成若しくはＬＳＩ内部の回路区画の再構成が可能な論理デバイスについても、プロセッサとして採用することができる。複数の電子回路は、１つのチップに集約されていてもよいし、複数のチップに分散して設けられていてもよい。複数のチップは、１つの装置に集約されていてもよいし、複数の装置に分散して設けられていてもよい。ここでいうコンピュータシステムは、１以上のプロセッサ及び１以上のメモリを有するマイクロコントローラを含む。したがって、マイクロコントローラについても、半導体集積回路又は大規模集積回路を含む１ないし複数の電子回路で構成される。 The control unit 10 includes a computer system. A computer system mainly consists of a processor and a memory as hardware. The function of the control unit 10 in the present disclosure is realized by the processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, provided through a telecommunications line, or recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, or hard disk drive. may be provided. A processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large-scale integrated circuits (LSIs). The integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, FPGAs (Field-Programmable Gate Arrays), which are programmed after the LSI is manufactured, or logic devices that can reconfigure the connections inside the LSI or reconfigure the circuit sections inside the LSI, may also be used as processors. I can do it. The plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips. A plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices. The computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.
　（２．２）Ｘ軸用遊び機構、Ｙ軸用遊び機構及びＺ軸用遊び機構のレイアウト
　レンズシステム１００では、図４に示すように、平面視で、レンズ保持部材１２の外縁１２０は、円形状である。平面視で、Ｘ軸用遊び機構６、Ｙ軸用遊び機構７及びＺ軸用遊び機構８は、レンズ保持部材１２の外縁１２０に沿った方向において等間隔で並んでいる。 (2.2) Layout of X-axis play mechanism, Y-axis play mechanism, and Z-axis play mechanism In the lens system 100, as shown in FIG. 4, the outer edge 120 of the lens holding member 12 has a circular shape in plan view. It is the shape. In plan view, the X-axis play mechanism 6, the Y-axis play mechanism 7, and the Z-axis play mechanism 8 are arranged at equal intervals in the direction along the outer edge 120 of the lens holding member 12.
　図４には、平面視で、光源２０１の光軸Ａ２とＸ軸用遊び機構６とを通る第１直線ＤＸ１と、光源２０１の光軸Ａ２とＹ軸用遊び機構７とを通る第２直線ＤＹ１と、光源２０１の光軸Ａ２とＺ軸用遊び機構８とを通る第３直線ＤＺ１と、を図示してある。図４の例では、時計回り方向において第３直線ＤＺ１と第１直線ＤＸ１とのなす角度θ１は、１２０度であり、第３直線ＤＺ１と第２直線ＤＹ１とのなす角度θ２は、２４０度である。 FIG. 4 shows, in plan view, a first straight line DX1 passing through the optical axis A2 of the light source 201 and the X-axis play mechanism 6, and a second straight line passing through the optical axis A2 of the light source 201 and the Y-axis play mechanism 7. DY1 and a third straight line DZ1 passing through the optical axis A2 of the light source 201 and the Z-axis play mechanism 8 are shown. In the example of FIG. 4, the angle θ1 between the third straight line DZ1 and the first straight line DX1 in the clockwise direction is 120 degrees, and the angle θ2 between the third straight line DZ1 and the second straight line DY1 is 240 degrees. be.
　また、図４には、平面視でレンズ保持部材１２の外縁１２０に外接する正方形Ｓ１を二点鎖線で図示してある。正方形Ｓ１は、各々がレンズ保持部材１２の外縁１２０の接線である、第１辺Ｓ１１と、第２辺Ｓ１２と、第３辺Ｓ１３と、第４辺Ｓ１４と、を有する。Ｘ軸用遊び機構６は、第１スライダ６１の長手方向が第１辺Ｓ１１と平行になるように配置されている。Ｙ軸用遊び機構７は、第３スライダ７１の長手方向が第２辺Ｓ１２と平行になるように配置されている。Ｚ軸用遊び機構８は、第５スライダ８１（図３参照）の長手方向が第４辺Ｓ１４と平行になるように配置されており、第６スライダ８２（図３参照）の長手方向が第３辺Ｓ１３と平行になるように配置されている。 Further, in FIG. 4, a square S1 circumscribing the outer edge 120 of the lens holding member 12 in a plan view is illustrated with a two-dot chain line. The square S1 has a first side S11, a second side S12, a third side S13, and a fourth side S14, each of which is a tangent to the outer edge 120 of the lens holding member 12. The X-axis play mechanism 6 is arranged such that the longitudinal direction of the first slider 61 is parallel to the first side S11. The Y-axis play mechanism 7 is arranged so that the longitudinal direction of the third slider 71 is parallel to the second side S12. The Z-axis play mechanism 8 is arranged such that the longitudinal direction of the fifth slider 81 (see FIG. 3) is parallel to the fourth side S14, and the longitudinal direction of the sixth slider 82 (see FIG. 3) is parallel to the fourth side S14. It is arranged so as to be parallel to the three sides S13.
　（２．３）照明システム
　以下、実施形態に係る照明システム２００について、図７を参照して、より詳細に説明する。 (2.3) Lighting System Hereinafter, the lighting system 200 according to the embodiment will be described in more detail with reference to FIG. 7.
　照明システム２００は、例えば、光源２０１と、レンズシステム１００と、を備える。また、照明システム２００は、放熱板２０２（図２及び３参照）と、電源回路２０３と、点灯回路２０４と、を更に備える。照明システム２００では、光源２０１及び放熱板２０２は、レンズシステム１００の筐体２（図１参照）内に収容されている。光源２０１及び放熱板２０２は、筐体２内において移動しない。照明システム２００は、電源回路２０３と点灯回路２０４と制御部１０とを含む回路モジュールが筐体２（第１筐体２）とは別の第２筐体内に収容されている。照明システム２００では、レンズシステム１００の筐体２が、照明器具２２０の器具本体を兼ねている。照明器具２２０は、例えば、天井埋め込み型の照明器具であり、筐体２の底板部２１及び筒部２２が天井材の埋込孔に挿通され、筐体２のフランジ部２３を天井材の下面に当接させた状態で天井材に取り付けられる。 The illumination system 200 includes, for example, a light source 201 and a lens system 100. The lighting system 200 further includes a heat sink 202 (see FIGS. 2 and 3), a power supply circuit 203, and a lighting circuit 204. In the illumination system 200, the light source 201 and the heat sink 202 are housed in the housing 2 of the lens system 100 (see FIG. 1). The light source 201 and the heat sink 202 do not move within the housing 2 . In the lighting system 200, a circuit module including a power supply circuit 203, a lighting circuit 204, and a control unit 10 is housed in a second housing different from the housing 2 (first housing 2). In the lighting system 200, the housing 2 of the lens system 100 also serves as the main body of the lighting fixture 220. The lighting fixture 220 is, for example, a ceiling-embedded lighting fixture, in which the bottom plate part 21 and the cylindrical part 22 of the casing 2 are inserted into the embedding hole of the ceiling material, and the flange part 23 of the casing 2 is inserted into the bottom surface of the ceiling material. It can be attached to the ceiling material while it is in contact with the ceiling.
　（２．３．１）光源
　光源２０１は、例えば、図１～図３に示すように、実装基板２１０と、実装基板２１０上に実装された複数のＬＥＤチップと、実装基板２１０上に配置されており、複数のＬＥＤチップを覆っている波長変換部２１１と、を有する。複数のＬＥＤチップの各々の発光色は、青色である。光源２０１では、複数のＬＥＤチップが直列接続されているが、これに限らず、直並列接続されていてもよいし、並列接続されていてもよい。波長変換部２１１は、青色光を青色光とは異なる波長の光を含む光に変換する機能を有する。波長変換部２１１は、例えば、透光性材料部と、蛍光体粒子と、を含む。この場合、波長変換部２１１は、透光性材料部と蛍光体粒子との混合体により形成されている。波長変換部２１１では、透光性材料部内に多数の蛍光体粒子が存在している。透光性材料部の材料（透光性材料）は、可視光に対する透過率が高い材料が好ましい。透光性材料は、例えば、シリコーン系樹脂である。「シリコーン系樹脂」とは、例えば、シリコーン樹脂、変性シリコーン樹脂等である。波長変換部２１１は、波長変換要素として蛍光体粒子を有する。波長変換要素は、青色光の一部を波長変換して青色光の波長とは異なる波長の光を放射する。蛍光体粒子としては、例えば、黄色の光を放射する黄色蛍光体粒子を採用することができる。ＬＥＤチップから放射される光のピーク波長は、例えば、４６０ｎｍである。黄色蛍光体粒子から放射される光（蛍光）は、例えば、５３０ｎｍ以上５８０ｎｍ以下の波長域に主発光ピーク波長がある発光スペクトルを有するのが好ましい。黄色蛍光体粒子は、例えば、Ｃｅで付活されたＹ３Ａｌ５Ｏ１２であるが、これに限らない。光源２０１から出射される光（例えば、白色光）は、青色光と黄色光との混色光である。 (2.3.1) Light Source The light source 201 includes, for example, a mounting board 210, a plurality of LED chips mounted on the mounting board 210, and a plurality of LED chips disposed on the mounting board 210, as shown in FIGS. 1 to 3. and a wavelength conversion section 211 covering the plurality of LED chips. The emitted light color of each of the plurality of LED chips is blue. In the light source 201, a plurality of LED chips are connected in series, but the LED chips are not limited to this, and may be connected in series or in parallel. The wavelength converter 211 has a function of converting blue light into light containing light of a different wavelength from the blue light. The wavelength conversion section 211 includes, for example, a translucent material section and phosphor particles. In this case, the wavelength conversion section 211 is formed of a mixture of a translucent material section and phosphor particles. In the wavelength conversion section 211, a large number of phosphor particles are present within the translucent material section. The material of the transparent material portion (transparent material) is preferably a material with high transmittance to visible light. The transparent material is, for example, silicone resin. "Silicone resin" includes, for example, silicone resin, modified silicone resin, and the like. The wavelength conversion section 211 has phosphor particles as a wavelength conversion element. The wavelength conversion element wavelength-converts a portion of the blue light and emits light having a wavelength different from the wavelength of the blue light. As the phosphor particles, for example, yellow phosphor particles that emit yellow light can be used. The peak wavelength of light emitted from the LED chip is, for example, 460 nm. The light (fluorescence) emitted from the yellow phosphor particles preferably has an emission spectrum with a main emission peak wavelength in a wavelength range of 530 nm or more and 580 nm or less, for example. The yellow phosphor particles are, for example, Y 3 Al 5 O 12 activated with Ce, but are not limited thereto. The light (for example, white light) emitted from the light source 201 is a mixed color light of blue light and yellow light.
　また、波長変換部２１１は、波長変換要素として、黄色蛍光体粒子のみを含む場合に限らず、例えば、黄色蛍光体粒子と、黄緑色蛍光体粒子と、緑色蛍光体粒子と、赤色蛍光体粒子と、を含んでいてもよい。つまり、波長変換部２１１は、複数種の蛍光体粒子を含んでいてもよい。 Further, the wavelength conversion unit 211 does not necessarily include only yellow phosphor particles as a wavelength conversion element, but includes, for example, yellow phosphor particles, yellow-green phosphor particles, green phosphor particles, and red phosphor particles. It may include. That is, the wavelength converter 211 may include multiple types of phosphor particles.
　（２．３．２）放熱板
　放熱板２０２（図２及び３参照）は、光源２０１で発生する熱を放熱させるための部材である。照明システム２００では、光源２０１は、放熱板２０２上に配置されている。放熱板２０２の材料は、例えば、アルミニウム又はアルミニウム合金を含む。 (2.3.2) Heat sink plate The heat sink plate 202 (see FIGS. 2 and 3) is a member for radiating heat generated by the light source 201. In the lighting system 200, a light source 201 is arranged on a heat sink 202. The material of the heat sink 202 includes, for example, aluminum or an aluminum alloy.
　放熱板２０２は、筐体２に固定されている。 The heat sink 202 is fixed to the housing 2.
　（２．３．３）電源回路
　電源回路２０３は、例えば、交流の電力系統から供給される交流電圧を直流電圧に変換するように構成される。電源回路２０３は、例えば、交流電圧を全波整流する整流回路と、力率改善回路（昇圧チョッパ回路）と、を含む。電源回路２０３は、点灯回路２０４、制御部１０等へ直流電圧を供給する。 (2.3.3) Power Supply Circuit The power supply circuit 203 is configured to convert, for example, an AC voltage supplied from an AC power system into a DC voltage. The power supply circuit 203 includes, for example, a rectifier circuit that full-wave rectifies an AC voltage and a power factor correction circuit (boost chopper circuit). The power supply circuit 203 supplies DC voltage to the lighting circuit 204, the control unit 10, and the like.
　（２．３．４）点灯回路
　点灯回路２０４は、例えば、光源２０１に供給する直流電力の大きさを調整可能な定電流回路（例えば、降圧チョッパ回路）を含む。 (2.3.4) Lighting Circuit The lighting circuit 204 includes, for example, a constant current circuit (for example, a step-down chopper circuit) that can adjust the magnitude of the DC power supplied to the light source 201.
　点灯回路２０４は、例えば、外部装置３００から与えられた外部信号に基づいて光源２０１を調光制御する場合、光源２０１に供給する電流の大きさを調整する。光源２０１を定格電流で点灯させるときの調光レベル（調光率ともいう）を１００％とすると、点灯回路２０４は、調光率を例えば、１００％～０％の範囲で調整することができる。調光レベルが０％のときは、光源２０１は、消灯状態となる。 The lighting circuit 204 adjusts the magnitude of the current supplied to the light source 201 when dimming the light source 201 based on an external signal given from the external device 300, for example. Assuming that the dimming level (also referred to as dimming rate) when lighting the light source 201 at the rated current is 100%, the lighting circuit 204 can adjust the dimming rate within a range of, for example, 100% to 0%. . When the dimming level is 0%, the light source 201 is turned off.
　（３）レンズシステム及び照明システムの動作
　レンズシステム１００では、光源２０１に対するレンズ１１の相対位置をＸ軸方向、Ｙ軸方向及びＺ軸方向それぞれにシフトさせる（移動させる）ことができる。レンズ１１が基準位置にある場合、照明器具２２０から出射される光Ｌ１は、図５Ａに示すように、光源２０１から出射されてレンズ１１によって集光された光である。また、レンズ１１が基準位置からＺ軸の負方向に移動された場合、照明器具２２０から出射される光Ｌ１は、図５Ｂに示すように、光源２０１から出射されレンズ１１によって拡散された光である。つまり、図５Ａと図５Ｂとでは、光Ｌ１の配光角が異なり、図５Ｂの光Ｌ１の配光角が図５Ａの光Ｌ１の配光角よりも大きい。また、レンズ１１が基準位置からＺ軸の負方向及びＸ軸の正方向に移動された場合、照明器具２２０から出射される光Ｌ１は、図５Ｃに示すように、光源２０１から出射されレンズ１１によって拡散されるとともに照射方向を変えられた光である。図５Ｂと図５Ｃとでは、光Ｌ１の照射方向が異なる。 (3) Operation of Lens System and Illumination System In the lens system 100, the relative position of the lens 11 with respect to the light source 201 can be shifted (moved) in each of the X-axis direction, Y-axis direction, and Z-axis direction. When the lens 11 is at the reference position, the light L1 emitted from the lighting fixture 220 is the light emitted from the light source 201 and collected by the lens 11, as shown in FIG. 5A. Further, when the lens 11 is moved from the reference position in the negative direction of the Z axis, the light L1 emitted from the lighting fixture 220 is light emitted from the light source 201 and diffused by the lens 11, as shown in FIG. 5B. be. That is, the light distribution angle of the light L1 in FIG. 5A and FIG. 5B is different, and the light distribution angle of the light L1 in FIG. 5B is larger than the light distribution angle of the light L1 in FIG. 5A. Further, when the lens 11 is moved from the reference position in the negative direction of the Z axis and the positive direction of the This is light that is diffused and has its direction of irradiation changed. The irradiation direction of the light L1 is different between FIG. 5B and FIG. 5C.
　また、レンズシステム１００を備える照明システム２００では、レンズシステム１００によって、例えば、図６Ａ及び６Ｂに示すように、光源２０１からの光Ｌ１の照射方向及び配光角を制御することが可能である。図６Ａと図６Ｂとでは照明器具２２０から出射される光Ｌ１の配光角が異なる。また、図６Ｂでは、照明器具２２０から出射される光Ｌ１の照射方向を互いに異ならせた３つの光Ｌ１を示してある。図６Ｂでは、例えば、照明器具２２０が図６Ｂに点線で示した光Ｌ１を出射させている状態においてレンズ１１をＸ軸の正方向及びＹ軸の正方向にシフトさせた場合に照明器具２２０から出射される光Ｌ１を二点鎖線で示してある。また、図６Ｂでは、照明器具２２０が点線で示した光Ｌ１を出射させている状態においてレンズ１１をＸ軸の負方向及びＹ軸の正方向にシフトさせた場合に照明器具２２０から出射される光Ｌ１を一点鎖線で示してある。 Furthermore, in the illumination system 200 including the lens system 100, the irradiation direction and light distribution angle of the light L1 from the light source 201 can be controlled by the lens system 100, for example, as shown in FIGS. 6A and 6B. The light distribution angle of the light L1 emitted from the lighting fixture 220 is different between FIG. 6A and FIG. 6B. Further, FIG. 6B shows three lights L1 emitted from the lighting fixture 220 with different irradiation directions. In FIG. 6B, for example, when the lens 11 is shifted in the positive direction of the X-axis and the positive direction of the Y-axis while the lighting device 220 is emitting the light L1 shown by the dotted line in FIG. The emitted light L1 is shown by a two-dot chain line. Further, in FIG. 6B, when the lens 11 is shifted in the negative direction of the X axis and the positive direction of the Y axis while the lighting device 220 is emitting the light L1 shown by the dotted line, the light L1 is emitted from the lighting device 220. The light L1 is shown by a dashed line.
　（４）効果
　（４．１）レンズシステム
　実施形態に係るレンズシステム１００は、Ｘ軸用遊び機構６と、Ｙ軸用遊び機構７と、Ｚ軸用遊び機構８と、を備えることにより、信頼性の向上を図ることが可能となる。より詳細には、実施形態に係るレンズシステム１００は、Ｘ軸用遊び機構６を備えるので、Ｙ軸用アクチュエータ４によりレンズユニット１をＹ軸方向に移動させるときにＸ軸用アクチュエータ３が共連れされることを抑制でき、かつ、Ｚ軸用アクチュエータ５によりレンズユニット１をＺ軸方向に移動させるときにＸ軸用アクチュエータ３が共連れされることを抑制できる。これにより、レンズシステム１００は、Ｘ軸用アクチュエータ３に接続されている第１電線の屈曲、断線等を抑制することが可能となる。また、実施形態に係るレンズシステム１００は、Ｙ軸用遊び機構７を備えるので、Ｘ軸用アクチュエータ３によりレンズユニット１をＸ軸方向に移動させるときにＹ軸用アクチュエータ４が共連れされることを抑制でき、かつ、Ｚ軸用アクチュエータ５によりレンズユニット１をＺ軸方向に移動させるときにＹ軸用アクチュエータ４が共連れされることを抑制できる。これにより、レンズシステム１００は、Ｙ軸用アクチュエータ４に接続されている第２電線の屈曲、断線等を抑制することが可能となる。また、実施形態に係るレンズシステム１００は、Ｚ軸用遊び機構８を備えるので、Ｘ軸用アクチュエータ３によりレンズユニット１をＸ軸方向に移動させるときにＺ軸用アクチュエータ５が共連れされることを抑制でき、かつ、Ｙ軸用アクチュエータ４によりレンズユニット１をＹ軸方向に移動させるときにＺ軸用アクチュエータ５が共連れされることを抑制できる。これにより、レンズシステム１００は、Ｚ軸用アクチュエータ５に接続されている第３電線の屈曲、断線等を抑制することが可能となる。 (4) Effects (4.1) Lens System The lens system 100 according to the embodiment is reliable by including the X-axis play mechanism 6, the Y-axis play mechanism 7, and the Z-axis play mechanism 8. This makes it possible to improve performance. More specifically, since the lens system 100 according to the embodiment includes the X-axis play mechanism 6, when the Y-axis actuator 4 moves the lens unit 1 in the Y-axis direction, the X-axis actuator 3 is tailgated. In addition, when the lens unit 1 is moved in the Z-axis direction by the Z-axis actuator 5, the X-axis actuator 3 can be prevented from being tailgated. Thereby, the lens system 100 can suppress bending, disconnection, etc. of the first electric wire connected to the X-axis actuator 3. Furthermore, since the lens system 100 according to the embodiment includes the Y-axis play mechanism 7, the Y-axis actuator 4 is not tailgated when the X-axis actuator 3 moves the lens unit 1 in the X-axis direction. It is also possible to suppress the Y-axis actuator 4 from being tailgated when the Z-axis actuator 5 moves the lens unit 1 in the Z-axis direction. Thereby, the lens system 100 can suppress bending, disconnection, etc. of the second electric wire connected to the Y-axis actuator 4. Furthermore, since the lens system 100 according to the embodiment includes the Z-axis play mechanism 8, the Z-axis actuator 5 is not tailgated when the X-axis actuator 3 moves the lens unit 1 in the X-axis direction. It is also possible to suppress the Z-axis actuator 5 from being tailgated when the lens unit 1 is moved in the Y-axis direction by the Y-axis actuator 4. Thereby, the lens system 100 can suppress bending, disconnection, etc. of the third electric wire connected to the Z-axis actuator 5.
　（４．２）照明システム
　実施形態に係る照明システム２００は、光源２０１と、レンズシステム１００と、を備える。レンズシステム１００は、Ｚ軸方向が光源２０１の光軸Ａ２と平行になるように配置されている。レンズシステム１００では、レンズ１１が基準位置のときにレンズ１１の光軸Ａ１１が光源２０１の光軸Ａ２と重なるように配置されている。レンズ１１の光入射面（第１面１１１）は、Ｚ軸方向において光源２０１から離れている。 (4.2) Illumination System The illumination system 200 according to the embodiment includes a light source 201 and a lens system 100. The lens system 100 is arranged so that the Z-axis direction is parallel to the optical axis A2 of the light source 201. In the lens system 100, the optical axis A11 of the lens 11 is arranged to overlap with the optical axis A2 of the light source 201 when the lens 11 is at the reference position. The light entrance surface (first surface 111) of the lens 11 is away from the light source 201 in the Z-axis direction.
　上記の構成により、実施形態に係る照明システム２００は、信頼性の向上を図ることが可能となる。 With the above configuration, the lighting system 200 according to the embodiment can improve reliability.
　また、実施形態に係る照明システム２００は、レンズシステム１００を備えるので、光源２０１の位置を変えることなく、配光制御することが可能となる。 Furthermore, since the illumination system 200 according to the embodiment includes the lens system 100, it is possible to control light distribution without changing the position of the light source 201.
　（変形例）
　実施形態は、本開示の様々な実施形態の一つに過ぎない。実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。 (Modified example)
The embodiment is only one of various embodiments of the present disclosure. The embodiments can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved.
　例えば、レンズ１１は、図８に示すように、フレネルレンズであってもよい。 For example, the lens 11 may be a Fresnel lens, as shown in FIG.
　また、レンズ１１は、両凸レンズ又はフレネルレンズに限らず、例えば、平凸レンズ、平凹レンズ、両凹レンズ等であってもよい。 Further, the lens 11 is not limited to a biconvex lens or a Fresnel lens, but may be a plano-convex lens, a plano-concave lens, a biconcave lens, etc., for example.
　また、平面視でのレンズ保持部材１２の外縁１２０は、円形状に限らず、例えば、楕円形状、多角形状であってもよい。 Furthermore, the outer edge 120 of the lens holding member 12 in plan view is not limited to a circular shape, and may be, for example, an elliptical shape or a polygonal shape.
　また、Ｘ軸用アクチュエータ３、Ｙ軸用アクチュエータ４及びＺ軸用アクチュエータ５の各々を構成する電動アクチュエータは、ステッピングモータと送りねじ機構とを備えた構成に限らず、例えば、圧電素子を備えた構成であってもよい。 Furthermore, the electric actuators constituting each of the X-axis actuator 3, the Y-axis actuator 4, and the Z-axis actuator 5 are not limited to a configuration that includes a stepping motor and a feed screw mechanism, but may include, for example, a configuration that includes a piezoelectric element. It may be a configuration.
　また、レンズシステム１００では、Ｘ軸用アクチュエータ３とＸ軸用遊び機構６とが第１連結板９１を介さずに連結されていてもよい。また、レンズシステム１００では、Ｙ軸用アクチュエータ４とＹ軸用遊び機構７とが第２連結板９２を介さずに連結されていてもよい。また、レンズシステム１００では、Ｚ軸用アクチュエータ５とＺ軸用遊び機構８とが第３連結板９３を介さずに連結されていてもよい。 Furthermore, in the lens system 100, the X-axis actuator 3 and the X-axis play mechanism 6 may be connected without using the first connection plate 91. Further, in the lens system 100, the Y-axis actuator 4 and the Y-axis play mechanism 7 may be connected without using the second connection plate 92. Further, in the lens system 100, the Z-axis actuator 5 and the Z-axis play mechanism 8 may be connected without using the third connecting plate 93.
　また、照明器具２２０は、天井埋め込み型の照明器具に限らず、例えば、天井直付け型の照明器具、ペンダント型の照明器具、スポットライト等であってもよい。 Furthermore, the lighting fixture 220 is not limited to a ceiling-embedded lighting fixture, but may be, for example, a ceiling-mounted lighting fixture, a pendant-type lighting fixture, a spotlight, or the like.
　また、照明システム２００は、電源回路２０３と点灯回路２０４と制御部１０とを含む回路モジュールが筐体２内に収容されていてもよい。この場合、照明システム２００は、筐体２とは別の第２筐体を備える必要はない。 Furthermore, in the lighting system 200, a circuit module including a power supply circuit 203, a lighting circuit 204, and a control unit 10 may be housed in the housing 2. In this case, the lighting system 200 does not need to include a second housing separate from the housing 2.
　また、レンズシステム１００は、対象空間を照明する用途に使用される照明システム２００の構成要素に限らず、例えば、対象空間内での光無線給電の用途に使用される光システムの構成要素であってもよい。対象空間は、例えば、施設内の空間である。施設は、例えば、オフィスビルである。施設は、例えば、戸建て住宅、集合住宅、店舗、美術館、ホテル、工場、スタジアム、空港等であってもよい。 Further, the lens system 100 is not limited to a component of the illumination system 200 used for illuminating a target space, but can also be a component of an optical system used for optical wireless power transfer within the target space, for example. It's okay. The target space is, for example, a space within a facility. The facility is, for example, an office building. The facility may be, for example, a single-family house, an apartment complex, a store, a museum, a hotel, a factory, a stadium, an airport, or the like.
　（態様）
　以上説明した実施形態等から、本明細書には以下の態様が開示されている。 (mode)
Based on the embodiments described above, the following aspects are disclosed in this specification.
　第１の態様に係るレンズシステム（１００）は、レンズユニット（１）と、筐体（２）と、Ｘ軸用アクチュエータ（３）と、Ｙ軸用アクチュエータ（４）と、Ｚ軸用アクチュエータ（５）と、制御部（１０）と、Ｘ軸用遊び機構（６）と、Ｙ軸用遊び機構（７）と、Ｚ軸用遊び機構（８）と、を備える。レンズユニット（１）は、レンズ（１１）と、レンズ（１１）を保持しているレンズ保持部材（１２）と、を含む。筐体（２）は、レンズユニット（１）を収容している。Ｘ軸用アクチュエータ（３）は、筐体（２）に固定されており、レンズユニット（１）をＸ軸方向に移動させる。Ｙ軸用アクチュエータ（４）は、筐体（２）に固定されており、レンズユニット（１）をＸ軸方向に直交するＹ軸方向に移動させる。Ｚ軸用アクチュエータ（５）は、筐体（２）に固定されており、レンズユニット（１）をＸ軸方向とＹ軸方向とに直交するＺ軸方向に移動させる。制御部（１０）は、Ｘ軸用アクチュエータ（３）、Ｙ軸用アクチュエータ（４）及びＺ軸用アクチュエータ（５）を制御する。Ｘ軸用遊び機構（６）は、レンズユニット（１）とＸ軸用アクチュエータ（３）との間に設けられている。Ｘ軸用遊び機構（６）は、Ｙ軸方向にスライド可能な第１スライダ（６１）及びＺ軸方向にスライド可能な第２スライダ（６２）を有する。Ｙ軸用遊び機構（７）は、レンズユニット（１）とＹ軸用アクチュエータ（４）との間に設けられている。Ｙ軸用遊び機構（７）は、Ｘ軸方向にスライド可能な第３スライダ（７１）及びＺ軸方向にスライド可能な第４スライダ（７２）を有する。Ｚ軸用遊び機構（８）は、レンズユニット（１）とＺ軸用アクチュエータ（５）との間に設けられている。Ｚ軸用遊び機構（８）は、Ｘ軸方向にスライド可能な第５スライダ（８１）及びＹ軸方向にスライド可能な第６スライダ（８２）を有する。 A lens system (100) according to a first aspect includes a lens unit (1), a housing (2), an X-axis actuator (3), a Y-axis actuator (4), and a Z-axis actuator ( 5), a control unit (10), an X-axis play mechanism (6), a Y-axis play mechanism (7), and a Z-axis play mechanism (8). The lens unit (1) includes a lens (11) and a lens holding member (12) holding the lens (11). The housing (2) houses the lens unit (1). The X-axis actuator (3) is fixed to the housing (2) and moves the lens unit (1) in the X-axis direction. The Y-axis actuator (4) is fixed to the housing (2) and moves the lens unit (1) in the Y-axis direction orthogonal to the X-axis direction. The Z-axis actuator (5) is fixed to the housing (2) and moves the lens unit (1) in the Z-axis direction that is perpendicular to the X-axis direction and the Y-axis direction. The control unit (10) controls the X-axis actuator (3), the Y-axis actuator (4), and the Z-axis actuator (5). The X-axis play mechanism (6) is provided between the lens unit (1) and the X-axis actuator (3). The X-axis play mechanism (6) includes a first slider (61) that is slidable in the Y-axis direction and a second slider (62) that is slidable in the Z-axis direction. The Y-axis play mechanism (7) is provided between the lens unit (1) and the Y-axis actuator (4). The Y-axis play mechanism (7) includes a third slider (71) that is slidable in the X-axis direction and a fourth slider (72) that is slidable in the Z-axis direction. The Z-axis play mechanism (8) is provided between the lens unit (1) and the Z-axis actuator (5). The Z-axis play mechanism (8) includes a fifth slider (81) that is slidable in the X-axis direction and a sixth slider (82) that is slidable in the Y-axis direction.
　この態様によれば、信頼性の向上を図ることが可能となる。 According to this aspect, it is possible to improve reliability.
　第２の態様に係るレンズシステム（１００）は、第１の態様において、第１連結板（９１）と、第２連結板（９２）と、第３連結板（９３）と、を更に備える。第１連結板（９１）は、Ｘ軸用アクチュエータ（３）とＸ軸用遊び機構（６）とを連結している。第２連結板（９２）は、Ｙ軸用アクチュエータ（４）とＹ軸用遊び機構（７）とを連結している。第３連結板（９３）は、Ｚ軸用アクチュエータ（５）とＺ軸用遊び機構（８）とを連結している。 In the first aspect, the lens system (100) according to the second aspect further includes a first connecting plate (91), a second connecting plate (92), and a third connecting plate (93). The first connecting plate (91) connects the X-axis actuator (3) and the X-axis play mechanism (6). The second connecting plate (92) connects the Y-axis actuator (4) and the Y-axis play mechanism (7). The third connecting plate (93) connects the Z-axis actuator (5) and the Z-axis play mechanism (8).
　この態様によれば、第１連結板（９１）、第２連結板（９２）及び第３連結板（９３）を備えることにより、Ｘ軸用アクチュエータ（３）、Ｙ軸用アクチュエータ（４）及びＺ軸用アクチュエータ（５）それぞれの配置の自由度が高くなる。 According to this aspect, by providing the first connecting plate (91), the second connecting plate (92), and the third connecting plate (93), the X-axis actuator (3), the Y-axis actuator (4), and The degree of freedom in arranging each Z-axis actuator (5) is increased.
　第３の態様に係るレンズシステム（１００）では、第２の態様において、平面視で、レンズ保持部材（１２）の外縁（１２０）は、円形状である。平面視で、Ｘ軸用遊び機構（６）、Ｙ軸用遊び機構（７）及びＺ軸用遊び機構（８）は、レンズ保持部材（１２）の外縁（１２０）に沿った方向において等間隔で並んでいる。 In the lens system (100) according to the third aspect, in the second aspect, the outer edge (120) of the lens holding member (12) is circular in plan view. In plan view, the X-axis play mechanism (6), the Y-axis play mechanism (7), and the Z-axis play mechanism (8) are spaced at equal intervals in the direction along the outer edge (120) of the lens holding member (12). They are lined up.
　この態様によれば、レンズユニット（１）を移動させるときにレンズユニット（１）の傾きを抑制することが可能となる。 According to this aspect, it is possible to suppress the tilt of the lens unit (1) when moving the lens unit (1).
　第４の態様に係るレンズシステム（１００）では、第１～３の態様のいずれか一つにおいて、Ｘ軸用アクチュエータ（３）は、第１ステッピングモータ（３１）と、第１送りねじ機構（３２）と、を有する。第１送りねじ機構（３２）は、第１ステッピングモータ（３１）の回転軸に連結されている。Ｙ軸用アクチュエータ（４）は、第２ステッピングモータ（４１）と、第２送りねじ機構（４２）と、を有する。第２送りねじ機構（４２）は、第２ステッピングモータ（４１）の回転軸に連結されている。Ｚ軸用アクチュエータ（５）は、第３ステッピングモータ（５１）と、第３送りねじ機構（５２）と、を有する。第３送りねじ機構（５２）は、第３ステッピングモータ（５１）の回転軸に連結されている。 In the lens system (100) according to the fourth aspect, in any one of the first to third aspects, the X-axis actuator (3) includes a first stepping motor (31) and a first feed screw mechanism ( 32). The first feed screw mechanism (32) is connected to the rotating shaft of the first stepping motor (31). The Y-axis actuator (4) includes a second stepping motor (41) and a second feed screw mechanism (42). The second feed screw mechanism (42) is connected to the rotating shaft of the second stepping motor (41). The Z-axis actuator (5) includes a third stepping motor (51) and a third feed screw mechanism (52). The third feed screw mechanism (52) is connected to the rotating shaft of the third stepping motor (51).
　この態様によれば、レンズユニット（１）をＸ軸方向、Ｙ軸方向及びＺ軸方向それぞれへ移動させるときのレンズユニット（１）の移動量及びレンズユニット（１）の位置精度を向上させることが可能となる。 According to this aspect, it is possible to improve the amount of movement of the lens unit (1) and the positional accuracy of the lens unit (1) when moving the lens unit (1) in each of the X-axis direction, Y-axis direction, and Z-axis direction. becomes possible.
　第５の態様に係るレンズシステム（１００）は、第１～４の態様のいずれか一つにおいて、Ｘ軸用遊び機構（６）は、第１スライドガイド（６３）と、第２スライドガイド（６４）と、を更に有する。第１スライドガイド（６３）は、第１スライダ（６１）をＹ軸方向にスライド自在に保持する。第２スライドガイド（６４）は、第２スライダ（６２）をＺ軸方向にスライド自在に保持する。Ｙ軸用遊び機構（７）は、第３スライドガイド（７３）と、第４スライドガイド（７４）と、を更に有する。第３スライドガイド（７３）は、第３スライダ（７１）をＸ軸方向にスライド自在に保持する。第４スライドガイド（７４）は、第４スライダ（７２）をＺ軸方向にスライド自在に保持する。Ｚ軸用遊び機構（８）は、第５スライドガイド（８３）と、第６スライドガイド（８４）と、を有する。第５スライドガイド（８３）は、第５スライダ（８１）をＸ軸方向にスライド自在に保持する。第６スライドガイド（８４）は、第６スライダ（８２）をＹ軸方向にスライド自在に保持する。 In the lens system (100) according to a fifth aspect, in any one of the first to fourth aspects, the X-axis play mechanism (6) has a first slide guide (63) and a second slide guide ( 64). The first slide guide (63) holds the first slider (61) slidably in the Y-axis direction. The second slide guide (64) holds the second slider (62) slidably in the Z-axis direction. The Y-axis play mechanism (7) further includes a third slide guide (73) and a fourth slide guide (74). The third slide guide (73) holds the third slider (71) slidably in the X-axis direction. The fourth slide guide (74) holds the fourth slider (72) slidably in the Z-axis direction. The Z-axis play mechanism (8) includes a fifth slide guide (83) and a sixth slide guide (84). The fifth slide guide (83) holds the fifth slider (81) slidably in the X-axis direction. The sixth slide guide (84) holds the sixth slider (82) slidably in the Y-axis direction.
　この態様によれば、レンズユニット（１）を移動させるときに安定して移動させることができる。 According to this aspect, the lens unit (1) can be moved stably when moving.
　第６の態様に係る照明システム（２００）は、光源（２０１）と、第１～５の態様のいずれか一つのレンズシステム（１００）と、を備える。レンズシステム（１００）は、Ｚ軸方向が光源（２０１）の光軸（Ａ２）と平行になるように配置されている。レンズ（１１）の光入射面（第１面１１１）は、Ｚ軸方向において光源（２０１）から離れている。 The illumination system (200) according to the sixth aspect includes a light source (201) and the lens system (100) according to any one of the first to fifth aspects. The lens system (100) is arranged so that the Z-axis direction is parallel to the optical axis (A2) of the light source (201). The light entrance surface (first surface 111) of the lens (11) is away from the light source (201) in the Z-axis direction.
　この態様によれば、信頼性の向上を図ることが可能となる。 According to this aspect, it is possible to improve reliability.
　１　レンズユニット
　１１　レンズ
　１２　レンズ保持部材
　１２０　外縁
　２　筐体
　３　Ｘ軸用アクチュエータ
　３１　第１ステッピングモータ
　３２　第１送りねじ機構
　４　Ｙ軸用アクチュエータ
　４１　第２ステッピングモータ
　４２　第２送りねじ機構
　５　Ｚ軸用アクチュエータ
　５１　第３ステッピングモータ
　５２　第３送りねじ機構
　６　Ｘ軸用遊び機構
　６１　第１スライダ
　６２　第２スライダ
　６３　第１スライドガイド
　６４　第２スライドガイド
　７　Ｙ軸用遊び機構
　７１　第３スライダ
　７２　第４スライダ
　７３　第３スライドガイド
　７４　第４スライドガイド
　８　Ｚ軸用遊び機構
　８１　第５スライダ
　８２　第６スライダ
　８３　第５スライドガイド
　８４　第６スライドガイド
　１０　制御部
　９１　第１連結板
　９２　第２連結板
　９３　第３連結板
　１００　レンズシステム
　２００　照明システム
　２０１　光源
　Ａ２　光軸
　Ａ１１　光軸 1 Lens unit 11 Lens 12 Lens holding member 120 Outer edge 2 Housing 3 Actuator for X-axis 31 First stepping motor 32 First feed screw mechanism 4 Actuator for Y-axis 41 Second stepping motor 42 Second feed screw mechanism 5 For Z-axis Actuator 51 Third stepping motor 52 Third feed screw mechanism 6 X-axis play mechanism 61 First slider 62 Second slider 63 First slide guide 64 Second slide guide 7 Y-axis play mechanism 71 Third slider 72 Fourth slider 73 Third slide guide 74 Fourth slide guide 8 Z-axis play mechanism 81 Fifth slider 82 Sixth slider 83 Fifth slide guide 84 Sixth slide guide 10 Control section 91 First connection plate 92 Second connection plate 93 Third Connecting plate 100 Lens system 200 Illumination system 201 Light source A2 Optical axis A11 Optical axis

Claims (6)

  1. 　レンズと前記レンズを保持しているレンズ保持部材とを含むレンズユニットと、
    　前記レンズユニットを収容している筐体と、
    　前記筐体に固定されており、前記レンズユニットをＸ軸方向に移動させるＸ軸用アクチュエータと、
    　前記筐体に固定されており、前記レンズユニットを前記Ｘ軸方向に直交するＹ軸方向に移動させるＹ軸用アクチュエータと、
    　前記筐体に固定されており、前記レンズユニットを前記Ｘ軸方向と前記Ｙ軸方向とに直交するＺ軸方向に移動させるＺ軸用アクチュエータと、
    　前記Ｘ軸用アクチュエータ、前記Ｙ軸用アクチュエータ及び前記Ｚ軸用アクチュエータを制御する制御部と、
    　前記レンズユニットと前記Ｘ軸用アクチュエータとの間に設けられており、前記Ｙ軸方向にスライド可能な第１スライダ及び前記Ｚ軸方向にスライド可能な第２スライダを有するＸ軸用遊び機構と、
    　前記レンズユニットと前記Ｙ軸用アクチュエータとの間に設けられており、前記Ｘ軸方向にスライド可能な第３スライダ及び前記Ｚ軸方向にスライド可能な第４スライダを有するＹ軸用遊び機構と、
    　前記レンズユニットと前記Ｚ軸用アクチュエータとの間に設けられており、前記Ｘ軸方向にスライド可能な第５スライダ及び前記Ｙ軸方向にスライド可能な第６スライダを有するＺ軸用遊び機構と、を備える、
    　レンズシステム。     a lens unit including a lens and a lens holding member holding the lens;
    a housing housing the lens unit;
    an X-axis actuator that is fixed to the housing and moves the lens unit in the X-axis direction;
    a Y-axis actuator that is fixed to the housing and moves the lens unit in a Y-axis direction perpendicular to the X-axis direction;
    a Z-axis actuator that is fixed to the housing and moves the lens unit in a Z-axis direction perpendicular to the X-axis direction and the Y-axis direction;
    a control unit that controls the X-axis actuator, the Y-axis actuator, and the Z-axis actuator;
    an X-axis play mechanism that is provided between the lens unit and the X-axis actuator and includes a first slider that is slidable in the Y-axis direction and a second slider that is slidable in the Z-axis direction;
    a Y-axis play mechanism that is provided between the lens unit and the Y-axis actuator and includes a third slider that is slidable in the X-axis direction and a fourth slider that is slidable in the Z-axis direction;
    a Z-axis play mechanism that is provided between the lens unit and the Z-axis actuator and includes a fifth slider that is slidable in the X-axis direction and a sixth slider that is slidable in the Y-axis direction; Equipped with
    lens system.
  2. 　前記Ｘ軸用アクチュエータと前記Ｘ軸用遊び機構とを連結している第１連結板と、
    　前記Ｙ軸用アクチュエータと前記Ｙ軸用遊び機構とを連結している第２連結板と、
    　前記Ｚ軸用アクチュエータと前記Ｚ軸用遊び機構とを連結している第３連結板と、を更に備える、
    　請求項１に記載のレンズシステム。     a first connecting plate connecting the X-axis actuator and the X-axis play mechanism;
    a second connecting plate connecting the Y-axis actuator and the Y-axis play mechanism;
    further comprising a third connecting plate connecting the Z-axis actuator and the Z-axis play mechanism;
    A lens system according to claim 1.
  3. 　平面視で、前記レンズ保持部材の外縁は、円形状であり、
    　平面視で、前記Ｘ軸用遊び機構、前記Ｙ軸用遊び機構及び前記Ｚ軸用遊び機構は、前記レンズ保持部材の前記外縁に沿った方向において等間隔で並んでいる、
    　請求項２に記載のレンズシステム。     In plan view, the outer edge of the lens holding member is circular,
    In plan view, the X-axis play mechanism, the Y-axis play mechanism, and the Z-axis play mechanism are arranged at equal intervals in a direction along the outer edge of the lens holding member.
    A lens system according to claim 2.
  4. 　前記Ｘ軸用アクチュエータは、
    　　第１ステッピングモータと、
    　　前記第１ステッピングモータの回転軸に連結されている第１送りねじ機構と、を有し、
    　前記Ｙ軸用アクチュエータは、
    　　第２ステッピングモータと、
    　　前記第２ステッピングモータの回転軸に連結されている第２送りねじ機構と、を有し、
    　前記Ｚ軸用アクチュエータは、
    　　第３ステッピングモータと、
    　　前記第３ステッピングモータの回転軸に連結されている第３送りねじ機構と、を有する、
    　請求項１～３のいずれか一項に記載のレンズシステム。     The X-axis actuator is
    a first stepping motor;
    a first feed screw mechanism connected to the rotating shaft of the first stepping motor;
    The Y-axis actuator is
    a second stepping motor;
    a second feed screw mechanism connected to the rotating shaft of the second stepping motor;
    The Z-axis actuator is
    a third stepping motor;
    a third feed screw mechanism connected to the rotating shaft of the third stepping motor;
    Lens system according to any one of claims 1 to 3.
  5. 　前記Ｘ軸用遊び機構は、
    　　前記第１スライダを前記Ｙ軸方向にスライド自在に保持する第１スライドガイドと、
    　　前記第２スライダを前記Ｚ軸方向にスライド自在に保持する第２スライドガイドと、を更に有し、
    　前記Ｙ軸用遊び機構は、
    　　前記第３スライダを前記Ｘ軸方向にスライド自在に保持する第３スライドガイドと、
    　　前記第４スライダを前記Ｚ軸方向にスライド自在に保持する第４スライドガイドと、を更に有し、
    　前記Ｚ軸用遊び機構は、
    　　前記第５スライダを前記Ｘ軸方向にスライド自在に保持する第５スライドガイドと、
    　　前記第６スライダを前記Ｙ軸方向にスライド自在に保持する第６スライドガイドと、を更に有する、
    　請求項１～４のいずれか一項に記載のレンズシステム。     The X-axis play mechanism is
    a first slide guide that holds the first slider slidably in the Y-axis direction;
    further comprising a second slide guide that holds the second slider slidably in the Z-axis direction,
    The Y-axis play mechanism is
    a third slide guide that holds the third slider slidably in the X-axis direction;
    further comprising a fourth slide guide that holds the fourth slider slidably in the Z-axis direction,
    The Z-axis play mechanism is
    a fifth slide guide that holds the fifth slider slidably in the X-axis direction;
    further comprising a sixth slide guide that holds the sixth slider slidably in the Y-axis direction;
    Lens system according to any one of claims 1 to 4.
  6. 　光源と、
    　請求項１～５のいずれか一項に記載のレンズシステムと、を備え、
    　前記レンズシステムは、前記Ｚ軸方向が前記光源の光軸と平行になるように配置されており、
    　前記レンズの光入射面は、前記Ｚ軸方向において前記光源から離れている、
    　照明システム。     a light source and
    The lens system according to any one of claims 1 to 5,
    The lens system is arranged such that the Z-axis direction is parallel to the optical axis of the light source,
    The light incidence surface of the lens is separated from the light source in the Z-axis direction.
    lighting system.
PCT/JP2023/027260 2022-08-26 2023-07-25 Lens system and lighting system WO2024042967A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09329818A (en) * 1996-06-11 1997-12-22 Minolta Co Ltd Shake correction camera
JP2009162898A (en) * 2007-12-28 2009-07-23 Panasonic Corp Lens barrel and optical element driving device
JP2016177255A (en) * 2015-03-19 2016-10-06 パナソニックＩｐマネジメント株式会社 Multi-degree of freedom support mechanism, lens barrel, and optical apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09329818A (en) * 1996-06-11 1997-12-22 Minolta Co Ltd Shake correction camera
JP2009162898A (en) * 2007-12-28 2009-07-23 Panasonic Corp Lens barrel and optical element driving device
JP2016177255A (en) * 2015-03-19 2016-10-06 パナソニックＩｐマネジメント株式会社 Multi-degree of freedom support mechanism, lens barrel, and optical apparatus

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