WO2019111801A1 - Capteur de position et visiocasque - Google Patents

Capteur de position et visiocasque Download PDF

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Publication number
WO2019111801A1
WO2019111801A1 PCT/JP2018/044030 JP2018044030W WO2019111801A1 WO 2019111801 A1 WO2019111801 A1 WO 2019111801A1 JP 2018044030 W JP2018044030 W JP 2018044030W WO 2019111801 A1 WO2019111801 A1 WO 2019111801A1
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WO
WIPO (PCT)
Prior art keywords
terminal
substrate
conductor
contact
position sensor
Prior art date
Application number
PCT/JP2018/044030
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English (en)
Japanese (ja)
Inventor
学 石岡
昭 本間
Original Assignee
株式会社ソニー・インタラクティブエンタテインメント
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Publication date
Application filed by 株式会社ソニー・インタラクティブエンタテインメント filed Critical 株式会社ソニー・インタラクティブエンタテインメント
Publication of WO2019111801A1 publication Critical patent/WO2019111801A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
    • G01D5/252—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels

Definitions

  • the present invention relates to a position sensor and a head mounted display having the same.
  • Japanese Patent Application Laid-Open No. 10-062831 discloses a position sensor used to detect the position of a lens in an optical system.
  • the position sensor in Japanese Patent Application Laid-Open No. 10-062831 is a non-contact type sensor composed of a light emitting element and a light receiving element. This type of sensor has the problem of being relatively expensive.
  • As a type of position sensor there is also a contact type sensor having a circuit board on which a strip-like conductor pattern is formed and a terminal sliding on the conductor pattern.
  • the contact sensor has a problem that the conductor pattern wears out due to the long-term use of the sensor. In addition, since the movable range of the object is large, if the conductor pattern is long, there is a problem that the cost required for plating the conductor pattern is increased.
  • the position sensor according to the present disclosure is attached to a substrate having a first conductor portion and a second conductor portion, the substrate being in contact with the first conductor portion, and from the first conductor portion A first terminal portion elastically deformable so as to move between the separated state, and the substrate, which is in contact with the second conductor portion and separated from the second conductor portion A second terminal portion elastically deformable to move and a movable member movable relative to the substrate in the first direction.
  • the movable member has a first terminal operating portion and a second terminal operating portion.
  • the first terminal operation portion is arranged in the contact operation portion that pushes the first terminal portion toward the first conductor portion, the contact operation portion and the first direction, and the first terminal portion is the first terminal portion.
  • a head mount display includes a display device, a lens barrel disposed in the display device and movable in the left-right direction, and a position sensor for detecting the position of the lens barrel in the left-right direction.
  • the position sensor is attached to the substrate having the first conductor portion and the second conductor portion, and is in contact with the first conductor portion, and is separated from the first conductor portion.
  • a first terminal portion which is elastically deformable so as to move between them, and the substrate, and is moved between a state in contact with the second conductor portion and a state away from the second conductor portion
  • a movable member movable relative to the substrate in the first direction.
  • the movable member has a first terminal operating portion and a second terminal operating portion.
  • the first terminal operation portion is arranged in the contact operation portion that pushes the first terminal portion toward the first conductor portion, the contact operation portion and the first direction, and the first terminal portion is the first terminal portion.
  • a non-contact operation portion that allows separation from the first conductor portion, wherein the second terminal operation portion is a contact operation portion that pushes the second terminal portion toward the second conductor portion; and the contact operation portion And a non-contacting operation portion which is aligned in the first direction and which allows the second terminal portion to be separated from the second conductor portion.
  • the wear of the conductor can be reduced, or the cost required for plating the conductor can be reduced.
  • FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. In this figure, the terminal portion is shown in contact with the conductor pad. It is sectional drawing obtained by the same cut surface as FIG. 4A. In this figure, the terminal portion is shown separated from the conductor pad. It is a figure which shows the example of the head mounted display which mounts a position sensor.
  • the position sensor 1 will be described as an example of the embodiment.
  • the directions indicated by Z1 and Z2 in FIG. 1 are respectively referred to as upper and lower
  • the directions indicated by X1 and X2 shown in FIG. 1 are respectively referred to as right and left
  • Y1 and Y2 in FIG. The directions are called forward and backward, respectively. These directions are used to explain the relative positional relationship of the elements (members and parts) of the position sensor 1 and do not specify the posture / arrangement when the position sensor 1 is used.
  • the position sensor 1 has a substrate 10 and a conductor member 20.
  • the conductor member 20 is attached to the substrate 10. That is, the relative position of the conductor member 20 and the substrate 10 is fixed.
  • the substrate 10 is attached to a substrate holder 40.
  • the position sensor 1 may not have the substrate holder 40. In this case, the substrate 10 may be attached directly to the electronic device where the position sensor is utilized.
  • the position sensor 1 has a movable member 30 that can move relative to the substrate 10 and the conductor member 20.
  • the movable member 30 pushes down the terminal portion 21 of the conductor member 20 at a predetermined position to electrically connect the terminal portion 21 to the signal line (detection conductor pad 11) of the substrate 10.
  • the movable member 30 is attached to the detection target. The structure of the movable member 30 will be described in detail later.
  • the substrate 10 is a so-called printed circuit board (PCB).
  • the substrate 10 may be a rigid substrate or a flexible substrate.
  • a plurality of detection conductor pads 11 are formed on the substrate 10.
  • the detection conductor pad 11 is a conductor portion formed on the surface of the substrate 10.
  • the plurality of detection conductor pads 11 are arranged in the direction orthogonal to the moving direction of the movable member 30.
  • the detection conductor pad 11 includes, for example, a copper foil and a plating layer (for example, a nickel plating layer or a gold plating layer) formed on the surface of the copper foil.
  • the structure of the detection conductor pad 11 is not limited to this.
  • the connector 19 is mounted on the substrate 10.
  • the connector 19 has a plurality of terminals respectively connected to the plurality of detection conductor pads 11. Each terminal is connected to the detection conductor pad 11 via a signal line (not shown) formed on the substrate 10.
  • the position sensor 1 is connected to the control device of the electronic device via the connector 19 and an electric wire (for example, a flexible printed circuit (FPC)) connected to the connector 19.
  • the position sensor 1 may not have the connector 19.
  • the conductor member 20 is attached to the substrate 10.
  • the conductor member 20 is attached to the substrate 10 by the screw 3 (see FIG. 2).
  • the conductor member 20 may be soldered to the substrate 10.
  • the conductor member 20 has a plurality of terminal portions 21.
  • the conductor member 20 has five terminal portions 21.
  • the number of terminal portions 21 is not limited to this, and the number may be less than five or more than five.
  • the plurality of terminal portions 21 are arranged in a direction orthogonal to the moving direction of the movable member 30 (in the front-rear direction in the example of the position sensor 1).
  • the conductor member 20 has a common base 22. Each terminal portion 21 is connected to the common base 22 and extends from the common base 22 in the moving direction of the movable member 30 (leftward in FIG. 2).
  • the conductor member 20 is formed of one metal plate (for example, a copper plate), and a part of the metal plate is the terminal portion 21 and the common base 22. According to this structure, the number of parts of the position sensor can be reduced compared to the case where the plurality of terminal portions 21 are members independent of each other.
  • the common base 22 is attached to the substrate 10 by the screw 3 described above.
  • the plurality of terminal portions 21 are attached to the substrate 10 via the common base 22.
  • a common conductor pad 12 (see FIG. 2) is formed on the substrate 10.
  • the common conductor pad 12 is exposed on the surface of the substrate 10.
  • the common base 22 is disposed on the common conductor pad 12, attached to the substrate 10 by the screw 3, and electrically connected to the common conductor pad 12.
  • the common base 22 may be soldered to the common conductor pad 12.
  • the common conductor pad 12 is not electrically connected to the detection conductor pad 11.
  • the structure of the terminal portion 21 is not limited to the example of the position sensor 1.
  • the position sensor may have a plurality of terminal portions 21 independent of one another.
  • Each terminal portion 21 may be configured of one metal plate.
  • a plurality of conductor pads may be formed on the surface of the substrate 10 to be in contact with the bases of the plurality of terminal portions 21 respectively.
  • the terminal portion 21 has a contact 21 a for contacting the detection conductor pad 11 and a pressed portion 21 b pressed by the movable member 30.
  • the contact 21 a is located at the end of the terminal portion 21, and the pressed portion 21 b is located between the contact 21 a and the common base 22.
  • the terminal portion 21 extends obliquely upward from the common base 22 toward the lower surface of the movable member 30, is bent, and extends toward the substrate 10.
  • the bent portion is a pressed portion 21b.
  • the terminal portion 21 can be elastically deformed in a contact state (FIG. 4A) in which the contact 21 a contacts the detection conductor pad 11 and a non-contact state (FIG. 4B) in which the contact 21 a separates from the detection conductor pad 11.
  • the contact 21 a can be moved in the thickness direction of the substrate 10 by the elastic deformation of the terminal portion 21.
  • the terminal portion 21 is brought into a contact state, and when the pressing of the pressed portion 21b by the movable member 30 is released, the terminal portion 21 is made noncontact. Become.
  • the shape of the terminal portion 21 is not limited to the example of the position sensor 1.
  • the pressed portion 21 b may be formed at the tip of the terminal portion 21, and the contact 21 a may be formed between the pressed portion 21 b and the common base 22.
  • the movable member 30 is disposed to face the side of the substrate 10 on which the conductor member 20 is disposed (upper side in FIG. 2).
  • the movable member 30 can move relative to the substrate 10 (see FIGS. 4A and 4B).
  • the movable member 30 is linearly movable in parallel with the substrate 10. Specifically, the movable member 30 can reciprocate in the left-right direction within a predetermined range.
  • the movement of the movable member 30 is not limited to the example of the position sensor 1.
  • the movable member 30 may be rotatable relative to the substrate 10. Specifically, the movable member 30 may be rotatable about an axis perpendicular to the substrate 10.
  • the position sensor 1 is mounted on an electronic device (for example, a head mount display to be described later, a camera, etc.)
  • the substrate 10 may be fixed to the electronic device, and the movable member 30 may move.
  • the movable member 30 may be fixed relative to the electronic device, and the substrate 10 may move. Even when the substrate 10 moves, the relative positions of the conductor member 20 and the substrate 10 are fixed.
  • the movable member 30 has a plurality of terminal operating portions 31A, 31B, 31C, 31D, 31E extending in the moving direction of the movable member 30 (in the left-right direction in the example of the position sensor 1).
  • 31 is used as a code of the terminal operation unit in the description that does not distinguish the plurality of terminal operation units).
  • the plurality of terminal operation portions 31 are arranged in a direction orthogonal to the moving direction of the movable member 30, and the positions of the plurality of terminal operation portions 31 correspond to the positions of the plurality of terminal portions 21. That is, the terminal unit 21 is located below the terminal operation unit 31. Between the two adjacent terminal operation parts 31, the wall part 34 which divides them is formed, and each terminal operation part 31 becomes groove shape. A part (the pressed portion 21 b) of the terminal portion 21 is located between two adjacent wall portions 34.
  • each terminal operation unit 31 includes one or more contact operation units 31 a and one or more non-contact operation units 31 b.
  • the operation portions 31a and 31b are uneven, and the contact operation portion 31a and the non-contact operation portion 31b are different from each other in the distance from the substrate 10 to the contact portions 31a and 31b.
  • the distance from the substrate 10 to the contact operation unit 31a is smaller than the distance from the substrate 10 to the non-contact operation unit 31b. Therefore, when the pressed portion 21 b is located below the contact operation portion 31 a, the contact operation portion 31 a pushes the terminal portion 21 toward the detection conductor pad 11. Thus, the contact 21 a contacts the detection conductor pad 11.
  • the contact 21 a since the contact 21 a does not slide in a state of being in contact with the detection conductor pad 11, wear of the detection conductor pad 11 can be suppressed. Further, the area of the detection conductor pad 11 can be reduced, and as a result, the cost required for plating the detection conductor pad 11 can be reduced.
  • the distance from the substrate 10 to the non-contact operation unit 31 b is larger than the distance from the substrate 10 to the contact operation unit 31 a. Therefore, as shown in FIG. 4B, when the pressed portion 21b is positioned below the non-contacting operation portion 31b, the shape of the terminal portion 21 is restored by its elasticity, and the contact 21a is separated from the detection conductor pad 11. At this time, the non-contacting operation portion 31b may be in contact with the pressed portion 21b or may be separated from the pressed portion 21b. At this time, a force may be applied to the pressed portion 21b from the non-contact operating portion 31b to such an extent that the contact 21a does not contact the detection conductor pad 11.
  • an inclined surface 31c is formed between the non-contacting operation unit 31b and the contact operation unit 31a. According to this slope 31 c, the terminal portion 21 can be elastically deformed smoothly.
  • the terminal portion 21 is a bent portion opened downward, and has inclined portions on the right and left sides of the terminal portion 21. Therefore, the inclined portion of the terminal portion 21 contacts the slope 31c. This also elastically deforms the terminal portion 21 smoothly.
  • the non-contacting operation portion 31 b is a recessed portion which is recessed relative to the contact operating portion 31 a. Unlike the example of the position sensor 1, the non-contact operation unit 31 b may be a hole. Such a non-contact operation portion 31 b can also allow the terminal portion 21 to be separated from the detection conductor pad 11.
  • the contact operation unit 31 a and the non-contact operation unit 31 b are aligned in the moving direction of the movable member 30.
  • the terminal operation unit 31A includes one contact operation unit 31a and one non-contact operation unit 31b.
  • the terminal operation units 31C, 31D, and 31E include a plurality of contact operation units 31a and a plurality of non-contact operation units 31b.
  • the terminal operation unit 31B has one contact operation unit 31a and two non-contact operation units 31b.
  • the contact operation portion 31 a and the non-contact operation portion 31 b are alternately arranged in the moving direction of the movable member 30.
  • the plurality of terminal operation units 31 are different in the position of the contact operation unit 31 a and the position of the non-contact operation unit 31 b in the moving direction of the movable member 30.
  • the position of the touch operation portion 31a of the terminal operation portion 31A is different from the position of the touch operation portion 31a of the other terminal operation portions 31B to 31E.
  • the position of the non-contacting operation portion 31b of the terminal operation portion 31A is different from the position of the non-contacting operation portion 31b of the other terminal operation portions 31B to 31E.
  • “the position of the touch operation unit 31 a” means the position of the center of the touch operation unit 31 a in the movement direction and the length of the touch operation unit 31 a in the movement direction.
  • the plurality of terminal operating units 31 may be different in both the central position of the contact operating unit 31a and the length of the contact operating unit 31a, or the central position of the contact operating unit 31a and the length of the contact operating unit 31a Only one of them may be different.
  • the position of the non-contact operation portion 31 b means the position of the center of the non-contact operation portion 31 b in the movement direction and the length of the non-contact operation portion 31 b in the movement direction.
  • the plurality of terminal operating portions 31 may be different in both the position of the center of the noncontacting operation portion 31b and the length of the noncontacting operation portion 31b, or the position of the center of the noncontacting operation portion 31b and the noncontacting portion 31b Only one of the lengths of the operation unit 31 b may be different.
  • the common conductor pad 12 of the substrate 10 is set to, for example, a predetermined potential (hereinafter, this potential is referred to as a HIGH potential). Therefore, when the contact operation portion 31 a comes to the position of the pressed portion 21 b of the terminal portion 21 due to the movement of the movable member 30, the terminal portion 21 is in a contact state, and a detection conductor pad corresponding to the terminal portion 21. 11. A HIGH potential is output from 11. On the other hand, when the non-contact operation portion 31 b comes to the position of the pressed portion 21 b of the terminal portion 21 due to the movement of the movable member 30, the terminal portion 21 is in a non-contact state, and corresponds to the terminal portion 21.
  • a predetermined potential hereinafter, this potential is referred to as a HIGH potential
  • a potential (LOW potential) different from the HIGH potential is output from the detection conductor pad 11.
  • the plurality of terminal operation units 31 are different in the position of the contact operation unit 31 a and the position of the non-contact operation unit 31 b. Therefore, the position sensor 1 can output the signal of the bit number according to the number of the terminal operation parts 31 as a position signal.
  • the position sensor 1 has five terminal operation units 31 and can output a 5-bit position signal. Therefore, the position sensor 1 can detect the position of the detection target in 32 steps.
  • the position sensor 1 has the substrate holder 40 to which the substrate 10 is attached.
  • the substrate holder 40 has a bottom 41 on which the substrate 10 is disposed.
  • the bottom portion 41 is formed with a plurality of convex portions 41 a fitted in the holes 10 a formed in the substrate 10.
  • the position of the substrate 10 in the substrate holder 40 is defined by the convex portion 41 a.
  • the substrate 10 is attached to the substrate holder 40 together with the conductor member 20 by the screw 3 described above.
  • the substrate holder 40 guides the movable member 30 to move in the moving direction and engages the movable member 30 to define a guide portion 42 which defines the distance of the movable member 30 from the substrate 10.
  • the substrate holder 40 has two guide portions 42 positioned on opposite sides of the substrate 10.
  • Each guide portion 42 has a support wall 42a extending in the left-right direction.
  • the movable member 30 has two guided portions 33 which extend in the moving direction and which are located on opposite sides of the plurality of terminal operating portions 31.
  • the guided portion 33 is disposed on the support wall 42a, and can move in the left-right direction on the support wall 42a.
  • Each guide portion 42 has a plurality of guide walls 42b extending upward from the support wall 42a.
  • the movable member 30 is disposed between the guide wall 42 b of one of the guide portions 42 and the guide wall 42 b of the other guide portion 42. Thereby, the moving direction of the movable member 30 is restricted in the left and right direction.
  • each guide portion 42 has an engaging portion 42 c located at an end of the guide wall 42 b and hooked on the upper surface of the guided portion 33 of the movable member 30.
  • the movable member 30 is restricted from being separated from the substrate 10 by the engaging portion 42c. Therefore, in the position sensor 1, the height of the movable member 30 from the substrate 10 is defined by the support wall 42 a and the engaging portion 42 c.
  • the structure for defining the height of the movable member 30 or guiding the movement of the movable member 30 is not limited to the example of the position sensor 1 and may be changed as appropriate.
  • the movable member 30 and the substrate holder 40 are integrally formed of resin (for example, so-called engineering plastic). Each of the movable member 30 and the substrate holder 40 may be configured by combining a plurality of members.
  • FIG. 5 is a schematic view showing an example of a head mounted display having the position sensor 1 (hereinafter, the head mounted display is described as “HMD”).
  • the HMD 100 has a display device 101 for placing in front of the user's eyes.
  • the HMD 100 also has left and right lens barrels 102 disposed in the display device 101.
  • the lens barrel 102 has a plurality of lenses.
  • the lens barrel 102 is located between the user's eye and the display device 101.
  • the lens barrel 102 is supported so as to be movable in the left and right direction.
  • the HMD 100 has an electric actuator 103 for moving the left and right lens barrels 102 respectively.
  • the user can operate the electric actuator 103 by operating an operation switch (not shown) to adjust the position of the lens barrel 102 to the position of his / her eye.
  • the HMD 100 has two position sensors 1 that detect the positions of the left and right lens barrels 102, respectively.
  • the movable member 30 of the position sensor 1 is attached to, for example, the lens barrel 102 or the electric actuator 103.
  • the substrate holder 40 is attached to, for example, a frame 105 supporting the display device 101.
  • the movable member 30 may be attached to the frame 105, and the substrate holder 40 may be attached to the lens barrel 102 or the electric actuator 103.
  • the position signal output from the position sensor 1 is used, for example, as follows.
  • the HMD 100 receives moving image data from an information processing apparatus (not shown) (for example, a game device or an audio visual device), and displays the moving image on the display device 101 based on the moving image data.
  • the HMD 100 transmits the position signal output from the position sensor 1 to the information processing apparatus.
  • the information processing apparatus transmits the moving image data to the HMD 100. By doing this, it is possible to display a moving image in accordance with the position of the user's eye on the display device 101.
  • the position sensor 1 is attached to the substrate 10 having the plurality of detection conductor pads 11 and the substrate 10, and a state in which the position sensor 1 contacts the detection conductor pad 11 and a state in which the position sensor 1 is away from the detection conductor pad 11 And a plurality of terminal portions 21 that can be elastically deformed so as to move between them, and a movable member 30 that can be moved relative to the substrate 10.
  • the movable member 30 has a plurality of terminal operating portions 31. Each terminal operating portion 31 pushes the terminal portion 21 toward the detection conductor pad 11, and the moving direction of the contact operating portion 31a and the movable member 30. And a non-contact operation portion 31 b which allows the terminal portion 21 to be separated from the detection conductor pad 11.
  • the terminal portion 21 does not slide in a state in contact with the detection conductor pad 11, wear of the detection conductor pad 11 can be suppressed.
  • the area of the detection conductor pad 11 can be reduced, and the cost required for plating the detection conductor pad 11 can be reduced.
  • the position sensor proposed in the present disclosure is not limited to the example of the position sensor 1 described above.
  • the movable member 30 may be rotatable about an axis perpendicular to the substrate 10.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne un capteur de position (1) qui comprend une pluralité d'unités de borne pouvant être déformées de manière élastique (21) fixées à une plaque de base (10), et un élément mobile (30) pouvant se déplacer par rapport à la plaque de base (10). L'élément mobile (30) comprend une pluralité de parties de commande de borne (31). Chaque partie de commande de borne (31) comprend une partie de commande de contact (31a) qui presse la partie de borne (21) vers un plot conducteur de détection (11), et une partie de commande sans contact (31b) qui est disposée le long de la partie de commande de contact (31a) dans la direction de déplacement de l'élément mobile (30), et qui permet à la partie de borne (21) de s'éloigner du plot conducteur de détection (11).
PCT/JP2018/044030 2017-12-06 2018-11-29 Capteur de position et visiocasque WO2019111801A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-234025 2017-12-06
JP2017234025 2017-12-06

Publications (1)

Publication Number Publication Date
WO2019111801A1 true WO2019111801A1 (fr) 2019-06-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021219553A1 (fr) * 2020-04-30 2021-11-04 Pleiger Maschinenbau Gmbh & Co. Kg Dispositif de détection de position destiné à des entraînements hydrauliques ou électro-hydrauliques, et entraînement doté d'un moyen de détection de position
RU2805718C1 (ru) * 2020-04-30 2023-10-23 Пляйгер Машиненбау Гмбх Унд Ко. Кг Устройство для определения положения в гидравлических или электрогидравлических приводах и привод со средством определения положения

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04342914A (ja) * 1991-05-20 1992-11-30 Brother Ind Ltd ダイヤル板の回転位置検出装置
JPH0970406A (ja) * 1995-09-06 1997-03-18 Olympus Optical Co Ltd 手術用観察装置
JPH11167236A (ja) * 1997-10-03 1999-06-22 Asmo Co Ltd 駆動装置
US20020125113A1 (en) * 2001-03-06 2002-09-12 Mayur Bhakta Contacting incremental encoder
JP2003151401A (ja) * 2001-11-15 2003-05-23 Alps Electric Co Ltd ロータリエンコーダ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04342914A (ja) * 1991-05-20 1992-11-30 Brother Ind Ltd ダイヤル板の回転位置検出装置
JPH0970406A (ja) * 1995-09-06 1997-03-18 Olympus Optical Co Ltd 手術用観察装置
JPH11167236A (ja) * 1997-10-03 1999-06-22 Asmo Co Ltd 駆動装置
US20020125113A1 (en) * 2001-03-06 2002-09-12 Mayur Bhakta Contacting incremental encoder
JP2003151401A (ja) * 2001-11-15 2003-05-23 Alps Electric Co Ltd ロータリエンコーダ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021219553A1 (fr) * 2020-04-30 2021-11-04 Pleiger Maschinenbau Gmbh & Co. Kg Dispositif de détection de position destiné à des entraînements hydrauliques ou électro-hydrauliques, et entraînement doté d'un moyen de détection de position
RU2805718C1 (ru) * 2020-04-30 2023-10-23 Пляйгер Машиненбау Гмбх Унд Ко. Кг Устройство для определения положения в гидравлических или электрогидравлических приводах и привод со средством определения положения
US12078513B2 (en) 2020-04-30 2024-09-03 Pleiger Maschinenbau Gmbh & Co. Kg Position sensing device for hydraulic or electrohydraulic drives, and drive having position sensing means

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