WO2018143034A1 - Capteur de type à réflexion - Google Patents

Capteur de type à réflexion Download PDF

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Publication number
WO2018143034A1
WO2018143034A1 PCT/JP2018/002143 JP2018002143W WO2018143034A1 WO 2018143034 A1 WO2018143034 A1 WO 2018143034A1 JP 2018002143 W JP2018002143 W JP 2018002143W WO 2018143034 A1 WO2018143034 A1 WO 2018143034A1
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WO
WIPO (PCT)
Prior art keywords
light
emitting element
shielding plate
light emitting
slope
Prior art date
Application number
PCT/JP2018/002143
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English (en)
Japanese (ja)
Inventor
信尚 渡邊
一徳 砂原
Original Assignee
新光電子株式会社
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.)
Filing date
Publication date
Application filed by 新光電子株式会社 filed Critical 新光電子株式会社
Priority to CN201880005745.3A priority Critical patent/CN110168746B/zh
Publication of WO2018143034A1 publication Critical patent/WO2018143034A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled

Definitions

  • the present invention relates to a reflective sensor.
  • Patent Document 1 in an apparatus for projecting light from a photoelectric switch to an object moving directly under the photoelectric switch and detecting the presence or absence of the object by the reflected light, a substrate surface facing the photoelectric switch is disclosed.
  • An apparatus for preventing malfunction of a photoelectric switch is disclosed in which an irregular reflection plate having a rough surface with small irregularities is attached in an appropriate range.
  • the irregular reflection plate having small irregularities since the irregular reflection plate having small irregularities is used, the light reflected by the irregular reflection plate may enter the photoelectric switch. When reflected light is incident on the photoelectric switch, the photoelectric switch may malfunction depending on the characteristics of the photoelectric switch.
  • the present invention has been made in view of such circumstances, and in a reflective sensor that irradiates light from a light emitting element to an object and receives light reflected by the object, while preventing the influence of ambient light, the object It is an object of the present invention to provide a reflective sensor that can prevent light from entering the light receiving element other than at the time of detection.
  • an electronic component includes, for example, a light emitting element, a light receiving element that receives light emitted from the light emitting element and reflected by an object, and the light emitting element and the light receiving element.
  • the light-emitting element and the light-receiving element are provided in the case body along a first direction substantially parallel to the first surface, and the light-shielding plate has a first surface facing the first surface. 2 and a rib extending along the first direction faces the first surface.
  • the rib has a first slope with an acute angle formed with the second surface when viewed from a direction along the first direction, and the light emitting element
  • the surface that passes through the approximate center of the light emitting element and is substantially orthogonal to the first surface and along the first direction is provided at a position that intersects the first slope.
  • a gap through which the object passes is formed between the light transmitting portion and the first surface on which the light transmitting portion of the case main body in which the light emitting element and the light receiving element are provided.
  • a light shielding plate is provided so as to cover the light transmission part.
  • the light-emitting element is a surface that passes through the approximate center of the light-emitting element, is substantially orthogonal to the first surface, and a surface along the first direction intersects the first slope. Therefore, the light (center axis) emitted from the light emitting element hits the first slope and is reflected. Thereby, it can prevent that light injects into a light receiving element except the time of the detection of a target object.
  • the rib has the first slope and a second slope that intersects with the first slope, and the shape when viewed from the direction along the first direction is substantially triangular,
  • Each of the first slope and the second slope may be inclined by approximately 20 degrees or more with respect to the second surface.
  • the case has a substantially plate-like connecting plate portion thicker than the thickness of the light shielding plate that connects the case main body and the light shielding plate, and the case is in a direction substantially parallel to the first surface.
  • the shape when entangled may be a substantially U-shape.
  • the light-shielding plate can be held in a state where the strength is maintained without increasing the number of parts.
  • a light shielding plate can be provided on the reflective sensor while maintaining a small and simple shape.
  • the light in a reflective sensor that irradiates light to an object from a light emitting element and receives light reflected by the object, the light is applied to the light receiving element other than at the time of detecting the object while preventing the influence of disturbance light. Can be prevented from entering.
  • FIG. 6 is a six-side view showing an example of the reflective sensor 1, (A) is a front view, (B) is a plan view, (C) is a bottom view, and (D) is a left side view. (E) is a right side view and (F) is a rear view. It is the left view of the reflection type sensor 1, and is the figure which saw through the principal part.
  • FIG. 4 is a sectional view taken along line XX in FIG. 3.
  • FIG. 6 is a front view showing an example of a reflective sensor 1A in which an angle ⁇ 1-1 formed by a lower surface 12a and a slope 12c-1 is approximately 10 degrees.
  • FIG. 6 is a front view showing an example of a reflective sensor 1B in which an angle ⁇ 1-2 formed by a lower surface 12a and a slope 12c-2 is approximately 20 degrees.
  • 2 is a front view showing an example of a reflective sensor 2.
  • FIG. (A) is an example of a transmission type sensor
  • (B) is an example of a general reflection type sensor.
  • the reflection type sensor of the present invention detects an object by irradiating the object with light from the light emitting element and receiving light reflected by the object with a light receiving element.
  • FIG. 1A and 1B are perspective views showing an example of a reflective sensor 1 according to a first embodiment of the present invention.
  • FIG. 1A is a view seen from an obliquely upward direction
  • FIG. FIG. FIG. 2 is a six-side view showing an example of the reflective sensor 1, (A) is a front view, (B) is a plan view, (C) is a bottom view, and (D) is a left side. It is a top view, (E) is a right side view, (F) is a rear view.
  • FIG. 3 is a left side view of the reflective sensor 1, and is a view seen through a main part.
  • the right direction is the + x direction
  • the direction from the near side to the far side is the + y direction
  • the direction from the bottom to the top is the + z direction.
  • the reflective sensor 1 mainly includes a case 10, a connector 20, a light emitting element 31, a light receiving element 32, a lens 33, a light shielding member 34, and a substrate 35.
  • the case 10 is formed of a light-shielding resin (for example, polycarbonate (PC) or polyacetal (POM)), and is a substantially U-shaped part (substantially U-shaped) when viewed from the side (x direction).
  • the case 10 mainly includes a case main body 11, a light shielding plate 12, a connecting plate portion 13, and a mounting portion 14.
  • the case body 11 is a substantially rectangular parallelepiped part.
  • the case body 11 is provided with a connector 20.
  • the arrangement position of the connector 20 is not limited to this. Further, the connector 20 is not essential.
  • the case body 11 has a hollow inside, and a light emitting element 31, a light receiving element 32, a lens 33, a light shielding member 34, and a substrate 35 are provided inside the case body 11 (see FIG. 3).
  • the internal structure of the case body 11 will be described in detail later.
  • a light transmitting portion 11b through which light emitted from the light emitting element 31 and light incident on the light receiving element 32 pass is formed on the upper surface 11a (+ z side surface).
  • the light transmitting portion 11b is indicated by a dotted line for the sake of explanation, but in reality, the boundary between the upper surface 11a and the light transmitting portion 11b may not be visible.
  • the light transmitting portion 11b may be an opening, or the opening may be filled with a light transmitting resin such as polycarbonate (PC) or acrylic (PMMA).
  • the light shielding plate 12 is a substantially plate-like component, and is provided substantially parallel to the upper surface 11a so as to cover the light transmission portion 11b. Between the case main body 11 (upper surface 11a) and the light shielding plate 12, there is a gap S through which the object W passes.
  • the rib 12b along the y direction is formed on the lower surface 12a of the light shielding plate 12 (the surface facing the upper surface 11a) (see FIG. 1B).
  • the rib 12b protrudes toward the upper surface 11a.
  • the rib 12b will be described in detail later.
  • the connecting plate portion 13 is a substantially plate-like component that connects the case body 11 and the light shielding plate 12.
  • the connecting plate portion 13 holds the light shielding plate 12 with a gap S formed between the upper surface 11a and the light shielding plate 12.
  • the thickness of the connecting plate portion 13 is thicker than the thickness of the light shielding plate 12.
  • the attachment portion 14 is a member for attaching the reflective sensor 1 to another device, and is integrally formed with the connecting plate portion 13.
  • the attachment portion 14 has an attachment hole 14a.
  • the position and shape of the attachment part 14 are not restricted to this.
  • the case body 11 is provided with a substantially plate-like substrate 35 along the xy plane.
  • a light emitting element 31, a light receiving element 32, and a light shielding member 34 are provided on the upper surface (+ z side) of the substrate 35.
  • the connector 20 is provided on the lower ( ⁇ z side) surface of the substrate 35.
  • the light emitting element 31 is, for example, an LED, and emits light toward the object W.
  • the light receiving element 32 is, for example, a direct-current photo IC element, and receives light emitted from the light emitting element 31 and reflected by an object.
  • the light emitting element 31 and the light receiving element 32 are provided along the y direction.
  • the direction in which the light emitting element 31 and the light receiving element 32 are arranged is substantially the same as the longitudinal direction of the rib 12b.
  • the light emitting part of the light emitting element 31 and the light receiving part of the light receiving element 32 are provided toward the upper surface 11a.
  • the lens 33 is provided below the upper surface 11 a so as to protrude toward the inside of the case body 11.
  • the lens 33 mainly includes a lens main body 33a, a holding portion 33b that holds the lens main body 33a inside the case main body 11, and a light shielding portion 33c that is provided substantially at the center of the lens main body 33a.
  • the light transmitting portion 11b is formed by inserting the lens 33 into the hole 11c formed in the upper surface 11a.
  • the lens 33 is not essential.
  • the light shielding member 34 is provided between the light emitting element 31 and the light receiving element 32.
  • the light shielding part 33 c and the light shielding member 34 prevent light emitted from the light emitting element 31 from directly entering the light receiving element 32.
  • light A ⁇ b> 1 schematically shows the center (center axis) of light emitted from the light emitting element 31, and light A ⁇ b> 2 schematically shows the center (center axis) of light incident on the light receiving element 32.
  • the light emitted from the light emitting element 31 is collected by the lens body 33a, and emitted to the space (gap S) between the upper surface 11a and the light shielding plate 12 through the light transmitting portion 11b.
  • the light emitted from the light emitting element 31 is reflected by the object W.
  • the reflected light (light A2) passes through the light transmitting portion 11b, is collected by the lens body 33a, and enters the light receiving element 32.
  • the object W is detected. Since the light shielding plate 12 is provided, the influence of the disturbance light B can be prevented.
  • FIG. 4 is a sectional view taken along line XX in FIG.
  • the rib 12b protrudes toward the upper surface 11a and has a substantially triangular shape when viewed from the direction along the y direction (longitudinal direction of the rib 12b).
  • the rib 12b has a slope 12c and a slope 12d that intersects the slope 12c.
  • the angle ⁇ 1 formed between the lower surface 12a and the inclined surface 12c is approximately 25 degrees, and the angle ⁇ 2 formed between the lower surface 12a and the inclined surface 12d is approximately 30 degrees.
  • a plane (substantially orthogonal to the upper surface 11a and along the y direction) that passes through the approximate center of the light emitting element 31 and is substantially parallel to the yz plane is provided at a position that intersects the inclined surface 12c.
  • the position in the x direction is different from the line 12e where the inclined surface 12c and the inclined surface 12d intersect (where the rib 12b protrudes most) and the approximate center of the light emitting element 31.
  • the light emitted from the light emitting element 31 is reflected by the rib 12b. Since the surface that passes through the approximate center of the light emitting element 31 and is substantially parallel to the yz plane intersects the inclined surface 12c, the light A1 is reflected by the inclined surface 12c. The light A1 'reflected by the inclined surface 12c travels toward the outside of the case body 11 (here, + x side).
  • the light emitted from the light emitting element 31 has a spread.
  • Lights A ⁇ b> 3 and A ⁇ b> 4 schematically show the end of the range of light emitted from the light emitting element 31.
  • the light A3 is reflected by the slope 12c, and the light A3 'reflected by the slope 12c travels toward the outside of the case body 11 (here, the + x side).
  • the light A4 is reflected by the slope 12d, and the light A4 'reflected by the slope 12c travels toward the outside of the case body 11 (here, the ⁇ x side).
  • the light emitted from the light emitting element 31 is reflected by the rib 12b and is not received by the light receiving element 32.
  • the light shielding plate 12 is provided substantially parallel to the upper surface 11a so as to cover the light transmission portion 11b, the light is emitted from the light emitting element 31 to the object W and is reflected by the object W.
  • the influence of disturbance light can be prevented.
  • the light emitted from the light emitting element 31 is reflected by the rib 12b, and therefore the detection of the object W is performed. It is possible to prevent light from entering the light receiving element 32 except at times.
  • the longitudinal direction of the rib 12b and the direction in which the light emitting element 31 and the light receiving element 32 are aligned are along the y direction, and the position in the x direction between the line 12e and the approximate center of the light emitting element 31 is different. The light emitted from the element 31 is reliably reflected by the rib 12b toward the position where the light receiving element 32 is not provided. Therefore, malfunction can be prevented.
  • the reflective sensor 1 is effective when the object W has translucency (transparent or translucent).
  • the object W in the case of using a transmissive sensor as shown in FIG. 8A, if the object W has translucency, the object W will transmit light, so that the object W is detected. I can't.
  • a general reflective sensor as shown in FIG. 8B when a general reflective sensor as shown in FIG. 8B is used, even if the object W has translucency, light is reflected by the object W. Detection is possible.
  • a general reflective sensor malfunctions due to the influence of the disturbance light B. Even if a light modulation photo IC that is strong against disturbance light is used, even if it is a strong disturbance light, even the light modulation photo IC malfunctions.
  • the disturbance light B (see FIG. 3) is shielded by the light shielding plate 12, so that the influence of the disturbance light can be prevented. Therefore, even if an inexpensive direct-current photo IC element is used as the light receiving element 32, the reflective sensor 1 can detect the object W having translucency without malfunction.
  • the angle ⁇ 1 formed between the lower surface 12a and the inclined surface 12c is approximately 25 degrees
  • the angle ⁇ 2 formed between the lower surface 12a and the inclined surface 12d is approximately 30 degrees, but the angles ⁇ 1 and ⁇ 2 are Not limited.
  • FIG. 5 is a front view showing an example of the reflective sensor 1A in which the angle ⁇ 1-1 formed by the lower surface 12a and the inclined surface 12c-1 is approximately 10 degrees.
  • FIG. 6 is a front view showing an example of the reflective sensor 1B in which the angle ⁇ 1-2 formed by the lower surface 12a and the inclined surface 12c-2 is approximately 20 degrees. 5 and 6 are partially shown in cross section.
  • a rib 12b-1 having an inclined surface 12c-1 and an inclined surface 12d-1 intersecting the inclined surface 12c-1 is provided along the y direction on the lower surface 12a of the light shielding plate 12-1. Formed.
  • a rib 12b-2 having an inclined surface 12c-2 and an inclined surface 12d-2 intersecting the inclined surface 12c-2 is provided along the y direction on the lower surface 12a of the light shielding plate 12-2. Formed.
  • the line 12e-1 where the inclined surface 12c-1 and the inclined surface 12d-1 intersect and the line 12e-2 where the inclined surface 12c-2 and the inclined surface 12d-2 intersect with each other are substantially different from the center of the light emitting element 31 in the x direction.
  • the light emitted from the light emitting element 31 includes not only the light A1, A3, and A4 (see FIG. 5, the one-dot chain line), but also the light beam (light A5, A5) from the outside of the lens 33 toward the optical axis (light A1).
  • FIG. 5 and 6 see a thick dashed line).
  • the angle ⁇ 1-1 is approximately 10 degrees
  • the light A5 is reflected by the inclined surface 12c-1, and the reflected light A5 ′ is directed to the center of the lens body 33a.
  • the light enters (not shown in FIG. 5).
  • the inclined surfaces of the ribs should be inclined at approximately 20 degrees or more with respect to the lower surface 12a. That's fine. Since the lines 12e and 12e-2 are shifted to the ⁇ x side from the approximate center of the light emitting element 31, the angles ⁇ 2 and ⁇ 2-2 are larger than the angles ⁇ 1 and ⁇ 1-2, respectively. For this reason, if the inclined surfaces 12c and 12c-2 are inclined by approximately 20 degrees or more with respect to the lower surface 12a, the inclined surfaces 12d and 12d-2 are also inclined by approximately 20 degrees or more with respect to the lower surface 12a.
  • the inclined surface in this case, the inclined surface 12c is inclined approximately 25 degrees or more with respect to the lower surface 12a.
  • the size of the light shielding plate 12 is substantially the same as the size of the case body 11 in plan view, but the size of the light shielding plate 12 is not limited to this. As long as the light shielding plate 12 can cover the light transmitting portion 11 b, the size of the light shielding plate 12 may be smaller than the size of the case body 11 in plan view. However, in order to prevent the influence of disturbance light, it is desirable to make the light shielding plate 12 as large as possible.
  • the connecting plate portion 13 is provided on the ⁇ y side of the case body 11 and the light shielding plate 12, but the position and shape of the connecting plate portion 13 are not limited thereto.
  • the connecting plate portion 13 may be formed so that the case has a substantially U-shape when viewed from the front ( ⁇ y direction).
  • the light shielding plate 12 can be provided facing the case main body 11 in a small and simple shape without increasing the number of parts.
  • the rib 12b has a substantially triangular shape when viewed along the y direction.
  • the shape of the rib that reflects the light emitted from the light emitting element 31 is not limited thereto. I can't.
  • FIG. 7 is a front view showing an example of the reflective sensor 2.
  • the reflective sensor 2 mainly includes a case 10A, a connector 20 (not shown), a light emitting element 31, a light receiving element 32 (not shown), a lens 33 (not shown), and a light shielding member 34 (not shown). And a substrate 35.
  • the case 10A is a substantially U-shaped (substantially U-shaped) component as seen from the side (x direction), as in the case 10, and mainly includes the case main body 11, the light shielding plate 12A, the connecting plate portion 13, 14A.
  • the light shielding plate 12A is a substantially plate-like component provided substantially parallel to the upper surface 11a so as to cover the light transmission portion 11b. Ribs 12g along the y direction are formed on the lower surface 12f of the light shielding plate 12A.
  • the rib 12g has a slope 12h and a slope 12i that intersects the slope 12h.
  • the inclined surface 12h is inclined by approximately 20 degrees or more with respect to the lower surface 12f. In the present embodiment, the angle ⁇ 3 formed between the lower surface 12f and the inclined surface 12h is approximately 45 degrees.
  • a surface (substantially orthogonal to the upper surface 11a and along the y direction) that passes through the approximate center of the light emitting element 31 and is substantially parallel to the yz plane is provided at a position that intersects the inclined surface 12h.
  • the position in the x direction is different from the line 12j where the inclined surface 12h and the inclined surface 12i intersect (where the rib 12g protrudes most) and the approximate center of the light emitting element 31.
  • the light emitted from the light emitting element 31 is reflected by the rib 12g. Since the position in the x direction between the line 12j and the approximate center of the light emitting element 31 is different, the light A1 is reflected by the inclined surface 12h. The light A ⁇ b> 1 ′′ reflected by the inclined surface 12 h travels toward the outside of the case body 11 (here, the + x side).
  • the light emitted from the light emitting element 31 has a spread.
  • the light A3 is reflected by the lower surface 12f, and the light A4 is reflected by the inclined surface 12i.
  • the light receiving element 32 does not receive the light.
  • the light shielding plate 12A is provided substantially parallel to the upper surface 11a so as to cover the light transmitting portion 11b, it is possible to prevent the influence of disturbance light. Further, when the object W is not present between the upper surface 11a and the light shielding plate 12A, the light emitted from the light emitting element 31 is reflected by the ribs 12g. It is possible to prevent light from entering.
  • the rib 12g has the slopes 12h and 12i, but the slope 12i is not essential. Instead of the inclined surface 12i, the rib 12g may have a surface substantially parallel to the lower surface 12f.
  • the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included. . Further, the present invention can be applied not only to the reflection type sensor but also to various electronic components having a board provided with a connector. For example, the present invention can also be applied to an indicator lamp in which a light emitting unit such as a connector or LED is provided on a substrate.
  • substantially is a concept that includes not only the case of being exactly the same but also errors and deformations that do not lose the identity.
  • the “substantially rectangular parallelepiped shape” is not limited to a strictly rectangular parallelepiped shape but is a concept including a case where it can be identified with a rectangular parallelepiped shape, for example.
  • orthogonal, parallel, coincidence, etc. not only strictly orthogonal, parallel, coincidence, etc. but also cases of substantially parallel, substantially orthogonal, substantially coincidence, etc. are included.
  • neighboring means including an area of a certain range (which can be arbitrarily determined) near the reference position. For example, in the case of the vicinity of the end, it is a concept indicating that the region is in a certain range near the end and may or may not include the end.
  • Case 11 Case body 11a: Upper surface 11b: Light transmitting portion 11c: Holes 12, 12-1, 12-2, 12A: Light shielding plate 12a: Lower surface 12b 12b-1, 12b-2: Ribs 12c, 12c-1, 12c-2, 12d, 12d-1, 12d-2: Slopes 12e, 12e-1, 12e-2: Line 12f: Lower surface 12g: Ribs 12h, 12i : Slope 13: Connecting plate part 14 and 14A: Mounting part 14a: Mounting hole 20: Connector 31: Light emitting element 32: Light receiving element 33: Lens 33a: Lens body 33b: Holding part 33c: Light shielding part 34 : Light shielding member 35: Substrate

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Electronic Switches (AREA)

Abstract

La présente invention concerne un capteur de type à réflexion pour projeter de la lumière sur un sujet depuis un élément d'émission de lumière et recevoir la lumière réfléchie par le sujet, la lumière étant empêchée d'entrer dans un élément de réception de lumière sauf pendant la détection du substrat tout en éliminant l'effet de la lumière ambiante. Une plaque de protection contre la lumière 12 est disposée de façon à recouvrir une partie de transmission de lumière 11b d'un corps de boîtier 11 dans lequel un élément d'émission de lumière et un élément de réception de lumière sont disposés à l'intérieur, la plaque de protection contre la lumière 12 étant disposée de façon à laisser un espace, pour faire passer le sujet à travers celui-ci, par rapport à la surface 11a du corps de boîtier 11 sur lequel la partie de transmission de lumière 11b est formée. Une nervure 12b est formée sur une surface 12a de la plaque de protection contre la lumière 12, et présente une première surface inclinée à un angle aigu avec la surface 12a lorsqu'elle est observée depuis la direction longitudinale. L'élément d'émission de lumière est tel qu'un plan qui traverse le centre substantiel de l'élément d'émission de lumière, coupe de façon sensiblement orthogonale la surface 11a, et s'étend le long de la direction longitudinale de la nervure 12b et coupe la première surface inclinée.
PCT/JP2018/002143 2017-02-02 2018-01-24 Capteur de type à réflexion WO2018143034A1 (fr)

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CN201880005745.3A CN110168746B (zh) 2017-02-02 2018-01-24 反射型传感器

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JP2017-017294 2017-02-02
JP2017017294A JP6866174B2 (ja) 2017-02-02 2017-02-02 反射型センサ

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