Light emitting / receiving device

Abstract

To widen a detection range of an object compared to a configuration in which a light emitting unit and a light receiving unit are placed on the same plane of a substrate.SOLUTION: A light emitting / receiving device includes a substrate, a light emitting unit mounted on a mounting surface on the substrate such that its optical axis intersects with the mounting surface, and a light receiving unit mounted on a pair of inclined surfaces on the substrate, each inclined with respect to the mounting surface and arranged opposite each other when viewed from the opposite side to the optical axis direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a light emitting and receiving device.

Background Art

[0002] Patent Document 1 discloses an image display device including a display means for displaying an image, a housing that supports a peripheral portion of the image display surface of the display means, and a posture holding mechanism that holds the display means inclined in the front-rear direction. In the image display device, a light-transmitting window portion that opens forward of the housing and a human sensor that detects the presence or absence of a person through the window portion are disposed behind the window portion, and a component member of the human sensor is suspended rotatably.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to widen a detection range of an object as compared with a configuration in which a light emitting portion and a light receiving portion are installed on the same plane of a substrate.

Means for Solving the Problems

[0005] A light emitting and receiving device according to a first aspect of the present disclosure includes a substrate, a light emitting portion installed on an installation surface provided on the substrate such that an optical axis intersects the installation surface, and a pair of light receiving portions installed on a pair of inclined surfaces provided on the substrate so as to be inclined with respect to the installation surface and facing each other when viewed from the side opposite to the optical axis direction.

[0006] The light-receiving and light-emitting device according to the second aspect of the present disclosure is the light-receiving and light-emitting device according to the first aspect, wherein the substrate includes a main substrate having the installation surface, a pair of inclined substrates that are separate from the main substrate and constitute the inclined surface, and a first fixing portion that fixes the inclined substrate to the main substrate.

[0007] The light-receiving and light-emitting device according to the third aspect of the present disclosure is the light-receiving and light-emitting device according to the second aspect, and includes a pair of flexible connection substrates that connect the main substrate and the pair of inclined substrates respectively. The pair of connection substrates are arranged opposite to each other so as to sandwich the pair of inclined substrates from both sides when viewed from the side opposite to the optical axis direction.

[0008] The light-receiving and light-emitting device according to the fourth aspect of the present disclosure is the light-receiving and light-emitting device according to the third aspect, wherein the first fixing portion includes a holding portion that holds the inclined substrate, and at least a part of the portion of the connection substrate that is connected to the inclined substrate overlaps with the holding portion.

[0009] The light-receiving and light-emitting device according to the fifth aspect of the present disclosure is the light-receiving and light-emitting device according to the second aspect, wherein the main substrate includes a first substrate and a second substrate that constitutes the installation surface, and the second substrate is fixed to the first substrate by a second fixing portion.

[0010] The light-receiving and light-emitting device according to the sixth aspect of the present disclosure is the light-receiving and light-emitting device according to the fifth aspect, wherein the second fixing portion fixes the second substrate to the first substrate so that the distance between the first substrate and the second substrate becomes a predetermined distance.

[0011] The light-receiving and light-emitting device according to the seventh aspect of the present disclosure is the light-receiving and light-emitting device according to the fifth aspect, wherein the first sub-

[0012] The plate has a pair of first holes, the second substrate has a pair of second holes, and the second fixing portion has a base portion and portions that respectively protrude from the base portion toward the first substrate and are provided at portions facing each other in a state of being respectively inserted into the pair of first holes. The pair of first holes has a pair of first claws whose claw portions are pressed against the edges of the pair of first holes, and portions that respectively protrude from the base portion toward the second substrate and are provided at opposite portions of the portions facing each other in a state of being respectively inserted into the pair of second holes. The pair of second holes has a pair of second claws whose claw portions are pressed against the edges of the pair of second holes.

[0013] In the light emitting and receiving device according to the eighth aspect of the present disclosure, in the light emitting and receiving device according to the fifth aspect, the first fixing portion and the second fixing portion are integrated.

[0014] In the light emitting and receiving device according to the ninth aspect of the present disclosure, in the light emitting and receiving device according to the fifth aspect, the light emitting and receiving device includes a fitting portion provided on either one of the first fixing portion and the second fixing portion, and a fitted portion provided on the other one of the first fixing portion and the second fixing portion, into which the fitting portion is fitted.

[0015] In the light emitting and receiving device according to the tenth aspect of the present disclosure, in the light emitting and receiving device according to the second aspect, on the surface side including the installation surface of the main substrate, the inclined substrate is fixed via the first fixing portion.

[0016] In the light emitting and receiving device according to the eleventh aspect of the present disclosure, in the light emitting and receiving device according to the tenth aspect, the pair of inclined surfaces are plate surfaces on the side of the inclined substrate opposite to the main substrate, and are inclined so that the distance between them becomes narrower in the optical axis direction.

[0017] In the light emitting and receiving device according to the twelfth aspect of the present disclosure, in the light emitting and receiving device according to the second aspect, an opening penetrating in the thickness direction is provided in the main substrate, and on the back surface side opposite to the surface including the installation surface of the main substrate, the inclined substrate is fixed via the first fixing portion, and the pair of inclined surfaces are respectively exposed from the opening.

[0018] The light-emitting and light-receiving device according to the 13th aspect of the present disclosure is the light-emitting and light-receiving device according to the 5th aspect, wherein the first substrate is provided with a first opening and a second opening penetrating in the thickness direction, and on the back surface side of the first substrate, the inclined substrate is fixed via the first fixing portion and the second substrate is fixed via the second fixing portion, and a pair of the inclined surfaces are respectively exposed from the first opening and the light-emitting portion is exposed from the second opening.

[0019] The light-emitting and light-receiving device according to the 14th aspect of the present disclosure is the light-emitting and light-receiving device according to the 12th aspect, wherein a pair of the inclined surfaces are inclined so that the distance between them becomes narrower in the direction opposite to the optical axis direction.

[0020] The light-emitting and light-receiving device according to the 15th aspect of the present disclosure is the light-emitting and light-receiving device according to the 1st aspect, and includes a shielding plate that shields light between the light-emitting portion and a pair of the light-receiving portions.

[0021] The light-emitting and light-receiving device according to the 16th aspect of the present disclosure is the light-emitting and light-receiving device according to the 5th aspect, and includes a shielding plate that shields light between the light-emitting portion and a pair of the light-receiving portions, and the shielding plate and the second fixing portion are integral.

[0022] The light-emitting and light-receiving device according to the 17th aspect of the present disclosure is the light-emitting and light-receiving device according to the 16th aspect, wherein the first fixing portion and the second fixing portion are integral.

[0023] The light emitting and receiving device according to the 18th aspect of the present disclosure is the light emitting and receiving device according to the 16th aspect, wherein the first substrate has a pair of third holes and a pair of notches, and the second fixing portion has a base portion and protrudes from the base portion toward the first substrate respectively. The base portion contacts the surface of the first substrate, and in a state where the base portion is inserted into each of the pair of third holes, when the base portion is moved along the surface of the first substrate, a pair of third claws pressed against the edge portions of the third holes, protrude from the base portion toward the first substrate respectively. The base portion contacts the surface of the first substrate, and in a state where the pair of third claws are inserted into the pair of third holes respectively, they elastically deform in a direction opposite to the direction facing each other, and the base portion contacts the surface of the first substrate, and in a state where the pair of third claws are inserted into the pair of third holes respectively, when the base portion is moved along the surface of the first substrate, the elastic deformation is eliminated, and it has a pair of fitting portions that fit into the pair of notches respectively.

Advantages of the Invention

[0024] According to the first aspect, compared with the configuration in which the light emitting portion and the light receiving portion are installed on the same plane of the substrate, the detection range of the object can be widened.

[0025] According to the second aspect, compared with the configuration in which the main substrate and the inclined substrate are integrally formed, the manufacturing of the substrate becomes easier.

[0026] According to the third aspect, compared with the configuration in which the pair of connection substrates are arranged at positions shifted from each other when viewed from the side opposite to the optical axis direction, the shaking of the light receiving portion due to external forces such as vibration can be suppressed.

[0027] According to the fourth aspect, compared with the configuration in which the portion of the connection substrate connected to the inclined substrate is in a different place from the holding portion of the inclined substrate, the fixing of the inclined substrate to the main substrate can be strengthened.

[0028] According to the fifth aspect, compared with the configuration in which the first substrate and the second substrate are integrally formed, the manufacturing of the substrate becomes easier.

[0029] According to the sixth aspect, when the second substrate is fixed to the first substrate using the second fixing portion, the positioning accuracy of the light emitting portion is improved as compared with a configuration in which there is variation in the distance between the first substrate and the second substrate.

[0030] According to the seventh aspect, it is possible to suppress the looseness of the second substrate with respect to the first substrate as compared with a configuration in which the portions where the claw portions of the pair of first claws are provided and the portions where the claw portions of the pair of second claws are provided are the same.

[0031] According to the eighth aspect, it is possible to improve the positioning accuracy of the relative positions of the light emitting portion and the light receiving portion as compared with a configuration in which the first fixing portion and the second fixing portion are separately fixed to the first substrate.

[0032] According to the ninth aspect, it is possible to improve the positioning accuracy of the relative positions of the light emitting portion and the light receiving portion as compared with a configuration in which the first fixing portion and the second fixing portion are separately fixed to the first substrate.

[0033] According to the tenth aspect, the light emitting portion and the light receiving portion can be installed while keeping the surface of the main substrate facing upward as compared with a configuration in which an inclined substrate is provided on the back surface side of the main substrate.

[0034] According to the eleventh aspect, it is possible to expand the space on the surface side of the main substrate as compared with a configuration in which the pair of inclined surfaces are on the plate surface of the inclined substrate opposite to the main substrate and the pair of inclined surfaces are inclined so that the distance between them becomes wider in the optical axis direction.

[0035] According to the twelfth aspect, the amount by which the inclined substrate protrudes from the surface of the main substrate can be reduced as compared with a configuration in which the inclined substrate is fixed to the surface side of the substrate.

[0036] According to the thirteenth aspect, the amount by which the inclined substrate and the second substrate protrude from the surface of the first substrate can be reduced as compared with a configuration in which the inclined substrate and the second substrate are fixed to the surface side of the first substrate.

[0037] According to the 14th aspect, compared with a configuration in which a pair of inclined surfaces are on the plate surface of the inclined substrate opposite to the main substrate and the pair of inclined surfaces are inclined so that the distance between them becomes wider in the optical axis direction, the space on the back surface side of the main substrate can be widened.

[0038] According to the 15th aspect, it is possible to prevent the light emitted from the light emitting portion from directly entering the light receiving portion.

[0039] According to the 16th aspect, compared with a configuration in which the shielding plate and the second fixing portion are separately fixed to the first substrate, the manufacturing process can be simplified.

[0040] According to the 17th aspect, compared with a configuration in which the first fixing portion and the second fixing portion are separately fixed to the first substrate, the positioning accuracy of the relative positions of the light emitting portion and the light receiving portion can be improved.

[0041] According to the 18th aspect, compared with a configuration in which a plurality of holes for fixing are provided in the second substrate, the wiring of the second substrate can be routed more easily.

Brief Description of the Drawings

[0042]

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Figure 19

Mode for Carrying Out the Invention

[0043] Hereinafter, an example of the light transmitting and receiving device of the present embodiment will be described in detail with reference to the drawings.

[0044] As shown in FIGS. 18 and 19, the light transmitting and receiving device 30 of the present embodiment is applied to a multifunction machine 20 as an example. This multifunction machine 20 includes a document reading unit 22 that reads documents at the upper part. The multifunction machine 20 also includes an image forming unit 24 that forms an image on a recording medium such as paper at the lower part, and a paper feed tray or the like that supplies paper to the image forming unit 24.

[0045] The light emitting and receiving device 30 is provided on the front side of the multifunction machine 20. As an example, in the present embodiment, it is attached to the front wall 26A of the support column portion 26 formed between the document reading unit 22 and the image forming unit 24 of the multifunction machine 20.

[0046] The light emitting and receiving device 30 is, for example, a device having a function of detecting a moving body such as a person when the moving body approaches the multifunction machine 20. The light emitting and receiving device 30 is electrically connected to a control unit (not shown) of the multifunction machine 20. For example, when the control unit receives a detection signal detecting a moving body from the light emitting and receiving device 30, the control unit may perform control such as turning on an operation panel (not shown) or starting a preparatory operation when the multifunction machine 20 is in a standby state.

[0047] Note that the light emitting and receiving device 30 of the present disclosure is not limited to the above applications, that is, the applications of the multifunction machine 20. For example, the light emitting and receiving device 30 can also be used as a collision avoidance sensor for an AGV (Automated Guided Vehicle).

[0048] [First Embodiment] Next, the detailed configuration of the light emitting and receiving device 30 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 5.

[0049] As shown in FIG. 1, the light emitting and receiving device 30 includes a substrate 40, a light emitting unit 70, and a light receiving unit 80.

[0050] (Substrate 40) As shown in FIG. 1, the substrate 40 includes a main substrate 42, a pair of inclined substrates 46, a first fixing portion 50, and a second fixing portion 52.

[0051] As shown in FIG. 1, the main substrate 42 includes a first substrate 43 and a second substrate 44. In FIG. 1, the second substrate 44 is disposed above the first substrate 43. The second substrate 44 is fixed to the first substrate 43 by a second fixing portion 52 with a gap G therebetween. Here, the gap G refers to the distance between the surface 43T of the first substrate 43 and the back surface (the surface of the second substrate 44 facing the first substrate 43 side) in FIG. 4. Also, the first substrate 43, the second substrate 44, and the pair of inclined substrates 46 are, for example, printed wiring boards made of glass epoxy on which wirings made of copper foil are formed on the surface or the like.

[0052] Also, as shown in FIG. 5, the first substrate 43 has a pair of two sets of first holes 43A to which fixing members 53 constituting the second fixing portion 52 are fixed.

[0053] As shown in FIG. 1, the second substrate 44 has an installation surface 41 on which the light emitting portion 70 is installed (mounted). In the present embodiment, the installation surface 41 is provided on the surface of the second substrate 44 opposite to the first substrate 43. In other words, the light emitting portion 70 is installed on the installation surface 41 provided on the surface of the second substrate 44 opposite to the first substrate 43. Also, the light emitting portion 70 is installed on the installation surface 41 such that the optical axis L of the light emitting portion 70 installed on the installation surface 41 intersects the installation surface 41. In the present embodiment, as an example, the light emitting portion 70 is installed on the installation surface 41 such that the optical axis L of the light emitting portion 70 installed on the installation surface 41 is orthogonal to the installation surface 41. Here, the optical axis L is a virtual line indicating the direction in which light is emitted from the light emitting portion 70 (light emitting element 70A).

[0054] Also, the second substrate 44 has a pair of two sets of second holes 44A to which the fixing members 53 are fixed.

[0055] The pair of inclined substrates 46 are arranged on the same side as the second substrate 44 side with respect to the first substrate 43. In FIG. 1, a pair of inclined substrates 46 are arranged above the first substrate 43. The pair of inclined substrates 46 have a pair of inclined surfaces 46A on which the light receiving portions 80 are respectively installed (mounted). In the present embodiment, the inclined surfaces 46A are respectively provided on the surfaces of the pair of inclined substrates 46 opposite to the first substrate 43. The pair of inclined surfaces 46A are respectively inclined with respect to the installation surface 41, and as shown in FIG. 2, they are arranged to face each other when viewed from the side opposite to the direction of the optical axis L of the light emitting portion 70 (hereinafter appropriately referred to as the "optical axis direction"). In other words, the pair of inclined surfaces 46A are arranged to face each other when viewed from above the second substrate 44 through the portions other than the pair of inclined surfaces 46A. In the present embodiment, as an example, the pair of inclined substrates 46 are respectively arranged such that the pair of inclined surfaces 46A face each other when viewed from the side opposite to the optical axis direction. Note that FIG. 2 shows the positional relationship between the second substrate 44, the pair of inclined substrates 46, the light emitting portion 70, the pair of light receiving portions 80, and the pair of connection substrates 58 (details will be described later) when viewed from the side opposite to the direction of the optical axis L (when viewed from above the second substrate 44). Note that the pair of inclined substrates 46 of the present embodiment are separate from the main substrate 42.

[0056] Further, the pair of inclined surfaces 46A are inclined such that the distance between them becomes narrower in the optical axis direction. That is, the pair of inclined substrates 46 are respectively arranged such that the pair of inclined surfaces 46A are inclined so that the distance between them becomes narrower in the optical axis direction. Specifically, each inclined surface 46A is arranged on the surface 43T of the first substrate 43 such that the angle formed with the surface 43T of the first substrate 43 is an acute angle (for example, 45°). Note that since the angle formed by the inclined surface 46A and the surface 43T only needs to be an acute angle, it is not necessary to set the angles equal as described above. For example, the angle formed by one inclined surface 46A and the surface 43T may be 30°, and the angle formed by the other inclined surface 46A and the surface 43T may be 60°.

[0057] As shown in FIG. 1, the first fixing portion 50 fixes the pair of inclined substrates 46 to the main substrate 42. Specifically, the first fixing portion 50 is constituted by a single fixing member 51. This fixing member 51 is fixed to the first substrate 43. Further, the fixing member 51 includes a pair of holding portions 51A that respectively hold the pair of inclined substrates 46. By causing the pair of inclined substrates 46 to be respectively held by the pair of holding portions 51A, the pair of inclined substrates 46 are fixed to the first substrate 43.

[0058] The second fixing portion 52 fixes the second substrate 44 to the first substrate 43. Specifically, the second fixing portion 52 is constituted by a single fixing member 53 (see FIG. 3). This fixing member 53 is fixed to the first substrate 43. Further, the fixing member 53 is fixed to the second substrate 44. Then, as shown in FIG. 4, the fixing member 53 is disposed between the first substrate 43 and the second substrate 44, and the second substrate 44 is fixed to the first substrate 43 such that the interval G between the first substrate 43 and the second substrate 44 becomes a predetermined interval. In this way, the second substrate 44 is fixed to the first substrate 43 via the fixing member 53.

[0059] More specifically, the fixing member 53 has a base portion 55, and a pair of first claws 54 provided at portions on the opposite sides of the portions facing each other protruding from the back surface 43B of the first substrate 43 in a state of being respectively inserted into a pair of first holes 43A in two sets and protruding from the base portion 55 toward the first substrate 43, and the bases of the claw portions provided at the portions facing each other protruding from the surface of the second substrate 44 in a state of being respectively inserted into a pair of second holes 44A in two sets and protruding from the base portion 55 toward the second substrate 44 are respectively pressed against the edges of the pair of second holes 44A in two sets.

[0060] When two pairs of first claws 54 of the fixing member 53 are inserted into two pairs of first holes 43A, the base portions of the claw portions of the first claws 54 are pressed against the edges of the respective first holes 43A, preventing the first claws 54 from coming out of the first holes 43A. Similarly, when two pairs of second claws 56 of the fixing member 53 are inserted into two pairs of second holes 44A, the base portions of the claw portions of the second claws 56 are pressed against the edges of the respective second holes 44A, preventing the second claws 56 from coming out of the second holes 44A.

[0061] (Light emitting unit 70) As shown in FIG. 1, the light emitting unit 70 includes a light emitting element 70A installed on the installation surface 41 and a wide-angle lens 70B disposed on the light emitting element 70A. The wide-angle lens 70B has a function of diffusing the light emitted from the light emitting element 70A. This light emitting unit 70 is installed on the installation surface 41 such that the optical axis L intersects the installation surface 41. In this embodiment, as an example, when the light emitting unit 70 is installed on the installation surface 41, the optical axis L is perpendicular to the installation surface 41.

[0062] (Light receiving unit 80) The light receiving unit 80 is composed of a light receiving element. The light receiving unit 80 is installed on a pair of inclined surfaces 46A respectively. Here, as shown in FIG. 2, when viewed from the side opposite to the optical axis direction, the surfaces on the installation surface 41 side of the pair of light receiving units 80 are arranged to face each other. In other words, the pair of light receiving units 80 are arranged to face each other when looking from above the second substrate 44 through the portions other than the pair of light receiving units 80. That is, the pair of light receiving units 80 are arranged to face each other when viewed from the side opposite to the optical axis direction.

[0063] The light emitting and receiving device 30 also includes a pair of flexible connection substrates 58 that connect the first substrate 43 and the pair of inclined substrates 46 included in the main substrate 42 respectively.

[0064] (Connection substrate 58) As shown in FIG. 2, a pair of connection substrates 58 are arranged to face each other so as to sandwich a pair of inclined substrates 46 from both sides when viewed from the side opposite to the optical axis direction. One end of each of these connection substrates 58 is connected to the first substrate 43, and the other end is connected to the inclined substrate 46. Specifically, the connection substrates 58 are connected to the first substrate 43 and the inclined substrate 46 via connectors, respectively. The pair of connection substrates 58 are, for example, flexible printed boards made of a thin insulating material (plastic film) and having a structure that can be bent.

[0065] Next, the operation and effects of the present embodiment will be described. In the light emitting and receiving device 30 of the present embodiment, with respect to the installation surface 41 on which the light emitting unit 70 is installed, a pair of inclined surfaces 46A on which the light receiving units 80 are respectively installed are inclined and arranged to face each other when viewed from the side opposite to the optical axis L direction. Therefore, in the light emitting and receiving device 30, for example, compared with a configuration in which the light emitting unit 70 and the light receiving unit 80 are installed on the same plane of the substrate 40, the detection range of the moving body as an object can be widened.

[0066] In the light emitting and receiving device 30 of the present embodiment, the second substrate 44 having the installation surface 41 is fixed to the first substrate 43 using the first fixing portion 50, and the inclined substrate 46 having the inclined surface 46A is fixed using the second fixing portion 52. Therefore, in the light emitting and receiving device 30, compared with a configuration using a substrate in which the first substrate 43, the second substrate 44, and the inclined substrate 46 are integrally formed, the manufacturing of the substrate 40 becomes easier.

[0067] In the light emitting and receiving device 30 of the present embodiment, since the pair of connection substrates 58 are arranged to face each other so as to sandwich the pair of inclined substrates 46 from both sides when viewed from the side opposite to the optical axis direction, compared with a configuration in which the pair of connection substrates 58 are arranged at positions shifted from each other when viewed from the side opposite to the optical axis direction, the shaking of the light receiving unit due to an external force such as vibration can be suppressed.

[0068] In the light transmitting and receiving device 30 of the present embodiment, the second substrate 44 is fixed to the first substrate 43 using the second fixing portion 52. Therefore, in the light transmitting and receiving device 30, the manufacturing of the substrate 40 becomes easier compared to the configuration in which the first substrate 43 and the second substrate 44 are integrally formed.

[0069] Also, in the light transmitting and receiving device 30 of the present embodiment, the second substrate 44 is fixed to the first substrate 43 using the second fixing portion 52 so that the distance G between the first substrate 43 and the second substrate 44 becomes a predetermined distance. Therefore, in the light transmitting and receiving device 30, the positioning accuracy of the light emitting portion 70 is improved compared to the configuration in which there is variation in the distance G between the first substrate 43 and the second substrate 44 when the second substrate 44 is fixed to the first substrate 43 using the second fixing portion 52.

[0070] In the light transmitting and receiving device 30 of the present embodiment, the fixing member 53 constituting the second fixing portion 52 has a pair of first claws 54 in which claw portions provided at portions facing each other in a state of being inserted into the pair of first holes 43A from the base portion are pressed against the edge portions of the pair of first holes 43A, and a pair of second claws 56 in which claw portions provided at portions on the opposite side of the portions facing each other in a state of being inserted into the pair of second holes 44A are pressed against the edge portions of the pair of second holes 44A. Therefore, in the light transmitting and receiving device 30, the looseness of the second substrate 44 with respect to the first substrate 43 can be suppressed compared to the configuration in which the portions where the claw portions of the pair of first claws 54 are provided and the portions where the claw portions of the pair of second claws 56 are provided have the same configuration.

[0071] In the light transmitting and receiving device 30 of the present embodiment, the pair of inclined surfaces 46A are inclined so that the distance between them becomes narrower in the optical axis direction. Therefore, in the light transmitting and receiving device 30, the space on the surface side of the first substrate 43 can be widened compared to the configuration in which the pair of inclined surfaces 46A are inclined on the plate surface of the inclined substrate 46 opposite to the first substrate 43 so that the distance between them becomes wider in the optical axis direction.

[0072] [Modification Example of the First Embodiment] In the light transmitting and receiving device 30 of the foregoing embodiment, as shown in FIG. 1, one end of the inclined substrate 46 is supported by the holding portion 51A of the first fixing portion 50, and the other end is connected to the connection substrate 58. And, although the light receiving portion 80 is installed between the holding portion 51A of the inclined substrate 46 and the connection substrate 58, the present disclosure is not limited to this configuration. For example, like the light transmitting and receiving device 130 shown in FIG. 6, the light receiving portion 80 may be installed at one end of the inclined substrate 46, the other end of the inclined substrate 46 may be connected to the connection substrate 58, and the portion between the light receiving portion 80 of the inclined substrate 46 and the connection substrate 58 may be held by the holding portion 51A of the first fixing portion 50. In this case, similar to the foregoing embodiment, since the inclined substrate 46 is constrained by the holding portion 51A of the first fixing portion 50 and the connection substrate 58, for example, compared with a configuration in which the inclined substrate 46 is not constrained by the holding portion 51A or the connection substrate 58 of the first fixing portion 50, rattling of the inclined substrate 46 can be suppressed.

[0073] Furthermore, like the light transmitting and receiving device 230 shown in FIG. 7, the light receiving portion 80 may be installed at one end of the inclined substrate 46, the other end of the inclined substrate 46 may be held by the holding portion 51A, and the connection substrate 58 may be arranged so as to overlap with this holding portion 51A. That is, in the light transmitting and receiving device 230, at least a part of the portion of the connection substrate 58 connected to the inclined substrate 46 overlaps with the holding portion 51A. In this case, similar to the foregoing embodiment, compared with a configuration in which the pair of connection substrates 58 are arranged at positions shifted from each other when viewed from the side opposite to the optical axis direction, shaking of the light receiving portion 80 due to an external force such as vibration can be suppressed. Also, since a part of the holding portion 51A and the connection substrate 58 overlap, the length of the inclined substrate 46 can be shortened.

[0074] In the light transmitting and receiving device 30 of the foregoing embodiment, the fixing member 51 constituting the first fixing portion 50 and the fixing member 53 constituting the second fixing portion 52 are separate bodies, but the present disclosure is not limited to this configuration. For example, the fixing member 51 and the fixing member 53 may be integrated. When the fixing member 51 and the fixing member 53 are integrated, for example, a portion extending from the fixing member 51 to the fixing member 53 may be formed to connect the fixing member 51 and the fixing member 53 into one body. In addition, when the fixing member 51 and the fixing member 53 are made of resin, they may be integrally molded resin products. In this case, compared with the configuration in which the fixing member 51 and the fixing member 53 are separately fixed to the first substrate 43, the positioning accuracy of the relative positions of the light emitting portion 70 and the light receiving portion 80 can be improved.

[0075] Furthermore, the fixing member 51 constituting the first fixing portion 50 and the fixing member 53 constituting the second fixing portion 52 may be separate bodies, and a fitting portion may be provided on either one of the fixing member 51 and the fixing member 53, and a fitted portion into which the fitting portion fits may be provided on the other one of the fixing member 51 and the fixing member 53. For example, a connecting portion connecting the fixing member 51 and the fixing member 53 is formed, and a convex portion and a concave portion are provided on the split surface of this connecting portion. By using the convex portion as the fitting portion and the concave portion as the fitted portion and fitting the concave portion into the convex portion, the fixing member 51 and the fixing member 53 are integrally connected. Also in this case, compared with the configuration in which the fixing member 51 and the fixing member 53 are separately fixed to the first substrate 43, the positioning accuracy of the relative positions of the light emitting portion 70 and the light receiving portion 80 can be improved.

[0076] In the light transmitting and receiving device 30 of the foregoing embodiment, as shown in FIG. 1, the first substrate 43 and a pair of inclined substrates 46 are arranged on the surface 43T of the first substrate 43. However, the present disclosure is not limited to this configuration. For example, like the light transmitting and receiving device 330 shown in FIG. 8, the first substrate 43 may be provided with an opening 332 penetrating in the thickness direction, and a pair of inclined substrates 46 may be fixed to the back surface 43B side of the first substrate 43 via the first fixing portion 50. In this case, the surfaces of the pair of inclined substrates 46 facing each other become a pair of inclined surfaces 46A. The pair of inclined surfaces 46A are respectively exposed from the opening 332. That is, the light receiving portions 80 respectively provided on the pair of inclined surfaces 46A are also respectively exposed from the opening 332. Further, the pair of inclined surfaces 46A are inclined such that the distance between them becomes narrower in the direction opposite to the optical axis direction. When a pair of inclined substrates 46 are fixed to the back surface 43B side of the first substrate 43 via the first fixing portion 50 like the light transmitting and receiving device 330, compared with the configuration in which the inclined substrate 46 is fixed to the surface 43T side of the first substrate 43, the amount by which the inclined substrate 46 protrudes from the surface 43T of the first substrate 43 can be reduced. Further, like the light transmitting and receiving device 330, since the pair of inclined surfaces 46A are inclined such that the distance between them becomes narrower in the direction opposite to the optical axis direction, compared with the configuration in which the pair of inclined surfaces 46A are inclined such that the distance between them becomes wider in the optical axis direction, the space on the back surface 43B side of the first substrate 43 can be widened.

[0077] Furthermore, for example, like the light transmitting and receiving device 430 shown in FIG. 9, the first substrate 43 is provided with openings 432 and 434 penetrating in the thickness direction, and a pair of inclined substrates 46 are fixed to the back surface 43B side of the first substrate 43 via the first fixing portions 50, and the second substrate 44 may be fixed via the second fixing portion 52 (not shown in FIG. 9). The pair of inclined surfaces 46A are respectively exposed from the opening 432. That is, the light receiving portions 80 respectively provided on the pair of inclined surfaces 46A are also respectively exposed from the opening 432. The pair of inclined surfaces 46A are inclined so that the distance between them becomes narrower in the direction opposite to the optical axis direction. The light emitting portion 70 is exposed from the opening 434. Further, since the pair of inclined surfaces 46A of the light transmitting and receiving device 430 are inclined so that the distance between them becomes narrower in the direction opposite to the optical axis direction, compared with the configuration in which the pair of inclined surfaces 46A are inclined so that the distance between them becomes wider in the optical axis direction, the space on the back surface 43B side of the first substrate 43 can be expanded. Furthermore, the light transmitting and receiving device 430 can reduce the amount by which the inclined substrate 46 and the second substrate 44 protrude from the front surface 43T of the first substrate 43, compared with the configuration in which the inclined substrate 46 and the second substrate 44 are fixed to the front surface 43T side of the first substrate 43.

[0078] [Second Embodiment] Next, a detailed configuration of the light transmitting and receiving device 530 according to the second embodiment of the present disclosure will be described with reference to FIGS. 10 to 16.

[0079] As shown in FIGS. 10 and 11, the light transmitting and receiving device 530 includes a substrate 40 (main substrate 42, a pair of inclined substrates 46, a first fixing portion 50, and a second fixing portion 52), a light emitting portion 70, a light receiving portion 80, and a shielding plate 90.

[0080] The light transmitting and receiving device 530 of the present embodiment mainly differs from the light transmitting and receiving device 30 of the first embodiment in that a shielding plate 90 is provided and in the configuration of the second fixing portion 52.

[0081] Since the components of the light transmitting and receiving device 530 of the present embodiment are basically the same as those of the light transmitting and receiving device 30 of the first embodiment, the same reference numerals are assigned to the same components as those of the light transmitting and receiving device 30 of the first embodiment, and detailed descriptions are omitted unless particularly necessary.

[0082] As shown in FIGS. 10 and 11, the substrate 40 includes a main substrate 42, a pair of inclined substrates 46, a first fixing portion 50, and a second fixing portion 52.

[0083] As shown in FIGS. 10 and 11, the main substrate 42 includes a first substrate 43 and a second substrate 44. In FIGS. 10 and 11, the second substrate 44 is disposed above the first substrate 43. The second substrate 44 is fixed to the first substrate 43 by the second fixing portion 52 with a gap G therebetween. Here, the gap G refers to the distance between the surface 43T of the first substrate 43 and the back surface (the surface of the second substrate 44 facing the first substrate 43 side) in FIG. 11.

[0084] Specifically, the gap G is the distance required when a male connector (not shown) mounted on the back surface of the second substrate 44 (the surface facing the surface 43T of the first substrate 43) is mated with a female connector (not shown) mounted at a position on the surface 43T of the first substrate 43 facing the male connector. In other words, the gap G is the distance (height) in the insertion / extraction direction (the direction along the optical axis L in FIGS. 10 and 11) of the mated pair of connectors. Note that the first substrate 43 and the second substrate 44 are electrically connected by mating the female connector of the first substrate 43 and the male connector of the second substrate 44. Also, the male connector and the female connector may be reversed. That is, a male connector may be mounted on the surface 43T of the first substrate 43, and a female connector may be mounted on the back surface of the second substrate 44 at a position mating with the male connector of the first substrate 43.

[0085] Further, as shown in FIG. 12, the first substrate 43 has a pair of third holes 43C and a pair of cutout portions 43D to which a fixing member 53 constituting the second fixing portion 52 is fixed.

[0086] As shown in FIG. 10, the second substrate 44 has an installation surface 41 on which the light-emitting unit 70 is installed (mounted). In the present embodiment, the installation surface 41 is provided on the surface of the second substrate 44 opposite to the first substrate 43. In other words, the light-emitting unit 70 is installed on the installation surface 41 provided on the surface of the second substrate 44 opposite to the first substrate 43. Further, the light-emitting unit 70 is installed on the installation surface 41 such that the optical axis L of the light-emitting unit 70 installed on the installation surface 41 intersects the installation surface 41. In the present embodiment, as an example, the light-emitting unit 70 is installed on the installation surface 41 such that the optical axis L of the light-emitting unit 70 installed on the installation surface 41 is perpendicular to the installation surface 41.

[0087] The pair of inclined substrates 46 are arranged on the same side as the second substrate 44 side with respect to the first substrate 43. In FIG. 10, the pair of inclined substrates 46 are arranged above the first substrate 43. The pair of inclined substrates 46 have a pair of inclined surfaces 46A on which the light-receiving units 80 are respectively installed (mounted). In the present embodiment, the inclined surfaces 46A are respectively provided on the surfaces of the pair of inclined substrates 46 opposite to the first substrate 43. The pair of inclined surfaces 46A are respectively inclined with respect to the installation surface 41 and are arranged to face each other when viewed from the side opposite to the direction of the optical axis L of the light-emitting unit 70 (hereinafter appropriately referred to as the "optical axis direction").

[0088] The pair of inclined substrates 46 are connected to the first substrate 43 by a pair of flexible connection substrates (not shown).

[0089] As shown in FIG. 10, the first fixing portion 50 fixes the pair of inclined substrates 46 to the main substrate 42. Specifically, the first fixing portion 50 is constituted by one fixing member 51. This fixing member 51 is fixed to the first substrate 43. Further, the fixing member 51 includes a pair of holding portions 51A that respectively hold the pair of inclined substrates 46. The pair of inclined substrates 46 are fixed to the first substrate 43 by respectively holding the inclined substrates 46 by the pair of holding portions 51A.

[0090] The second fixing portion 52 fixes the second substrate 44 to the first substrate 43. Specifically, the second fixing portion 52, together with the shielding plate 90, is constituted by a single fixing member 53 (see FIGS. 13 and 14). In other words, the shielding plate 90 and the second fixing portion 52 are integrated.

[0091] This fixing member 53 is fixed to the first substrate 43. The fixing member 53 also holds the second substrate 44. Then, as shown in FIG. 11, the fixing member 53 is disposed between the first substrate 43 and the second substrate 44, and fixes the second substrate 44 to the first substrate 43 such that the interval G between the first substrate 43 and the second substrate 44 becomes a predetermined interval. In this way, the second substrate 44 is fixed to the first substrate 43 via the fixing member 53.

[0092] More specifically, as shown in FIGS. 13 and 14, the fixing member 53 has a base portion 55, a pair of third claws 55A each protruding from the base portion 55 toward the first substrate 43, a pair of fitting portions 55B each protruding from the base portion 55 toward the first substrate 43, a pair of fourth claws 55C each protruding from the base portion 55 toward the side opposite to the first substrate 43, a pair of guides 55D each protruding from the base portion 55 toward the side opposite to the first substrate 43, a pair of fifth claws 55E each protruding from the base portion 55 toward the side opposite to the first substrate 43, and a pair of guides 55F each protruding from the base portion 55 toward the side opposite to the first substrate 43.

[0093] The base portion 55 is a member having a substantially U-shaped shape in plan view, and has a first rod body extending in a direction along the direction in which the shielding plate 90 extends. A protruding portion protruding toward the shielding plate 90 is formed at the central portion of the side surface of this first rod body, and the tip of the protruding portion is integrally connected (linked) to the shielding plate 90. Further, the base portion 55 has a pair of second rod bodies extending from both ends of the first rod body toward the side opposite to the shielding plate 90. The base portion 55 also has a pair of third rod bodies extending in a direction away from each other from the ends (hereinafter referred to as "ends A") of the pair of second rod bodies that are not connected to both ends of the first rod body.

[0094] Further, the base portion 55 has a pair of fourth rods extending from the ends of the pair of third rods that are not connected to the pair of second rods, toward the side opposite to the shielding plate 90. The base portion 55 also has a pair of fifth rods extending from the ends of the pair of fourth rods that are not connected to the pair of third rods, in a direction approaching each other. Further, the base portion 55 has a pair of sixth rods extending from the ends of the pair of fifth rods that are not connected to the pair of fourth rods (hereinafter referred to as "end B") toward the side opposite to the shielding plate 90. The cross-sections of these first to sixth rods, perpendicular to the direction in which each rod extends, are substantially rectangular.

[0095] Therefore, in other words, the pair of third claws 55A have protruding portions that protrude respectively from positions spaced apart from each other on the first rod constituting the base portion 55, toward the first substrate 43, and the tips of the protruding portions further protrude toward the side opposite to the shielding plate 90. The pair of fitting portions 55B have protruding portions that protrude respectively from one end portion (the portion away from the shielding plate 90) of the pair of fourth rods constituting the base portion 55, toward the first substrate 43, and the tips of the protruding portions further protrude in a direction approaching each other. The pair of fourth claws 55C have protruding portions that protrude respectively from positions spaced apart from each other on the first rod constituting the base portion 55, toward the side opposite to the first substrate 43, and the protruding portions protrude respectively toward the side opposite to the shielding plate 90. The pair of guides 55D protrude respectively from the other end portions (the portions close to the shielding plate 90) of the pair of fourth rods constituting the base portion 55, toward the side opposite to the first substrate 43. The pair of fifth claws 55E have protruding portions that protrude respectively from one end portion (the portion away from the shielding plate 90) of the pair of fourth rods constituting the base portion 55, toward the side opposite to the first substrate 43, and the tips of the protruding portions further protrude in a direction approaching each other. The pair of guides 55F have protruding portions that protrude respectively from the pair of sixth rods constituting the base portion 55, toward the side opposite to the first substrate 43.

[0096] As shown in FIGS. 15 and 16, the pair of third claws 55A are inserted into the pair of third holes 43C with the base portion 55 in contact with the surface 43T of the first substrate 43. When the base portion 55 is moved along the surface 43T of the first substrate 43, the pair of third claws 55A are pressed against the edges of the pair of third holes 43C respectively, preventing the pair of third claws 55A from coming out of the pair of third holes 43C.

[0097] As shown in FIGS. 15(A) and 16(A), the pair of fitting portions 55B are elastically deformed in a direction opposite to the direction in which the formation portions of the pair of fitting portions 55B of the base portion 55 face each other, and the pair of fitting portions 55B come into contact with the side surface of the first substrate 43, with the base portion 55 in contact with the surface 43T of the first substrate 43 and the pair of third claws 55A inserted into the pair of third holes 43C respectively.

[0098] When the fixing member 53 is in this state (FIG. 15(A)), the male connector mounted on the back surface of the second substrate 44 is fitted into the female connector mounted on the first substrate 43. That is, the second substrate 44 can position the male connector mounted on the back surface with respect to the female connector mounted on the first substrate 43 from directly above the first substrate 43 by the pair of fourth claws 55C, the pair of guides 55D, the pair of fifth claws 55E, and the pair of guides 55F. In other words, if the back surface of the second substrate 44 is brought closer to the surface 43T of the first substrate 43 so that the second substrate 44 is positioned inside the pair of fourth claws 55C, the pair of guides 55D, the pair of fifth claws 55E, and the pair of guides 55F, the pair of connectors can be fitted. At this time, since the second substrate 44 is placed on the pair of end portions A and the pair of end portions B of the fixing member 53 described above, the interval G is ensured.

[0099] Then, as shown in FIGS. 15(C) and 16(B), with the pair of third claws 55A inserted into the pair of third holes 43C respectively, when the base portion 55 is moved along the surface 43T of the first substrate 43, the elastic deformation of the base portion 55 is eliminated, and the pair of fitting portions 55B are fixed to the first substrate 43 by fitting into the pair of notch portions 43D respectively.

[0100] Further, as shown in FIG. 15(B), a second substrate 44 is placed on a base portion 55 with a pair of fourth claws 55C, a pair of guides 55D, a pair of fifth claws 55E, and a pair of guides 55F serving as positioning guides.

[0101] In this state, when the base portion 55 is moved along the surface 43T of the first substrate 43, the elastic deformation of the base portion 55 is eliminated, and as shown in FIG. 15(C), the second substrate 44 is held by the pair of fourth claws 55C and the pair of fifth claws 55E. Thereby, the second substrate 44 is fixed to the first substrate 43 via the second fixing portion 52. As described above, since the pair of connectors are fitted, when the base portion 55 moves along the surface 43T of the first substrate 43, the second substrate 44 does not move together with the base portion 55.

[0102] As shown in FIG. 11, the shielding plate 90 is disposed between the light emitting portion 70 and the pair of light receiving portions 80. The shielding plate 90 is integrally formed with the second fixing portion 52 by a fixing member 53 of the second fixing portion 52 and is fixed to the first substrate 43.

[0103] The shielding plate 90 shields light and prevents the light emitted from the light emitting portion 70 from directly entering the pair of light receiving portions 80. Here, the shielding plate 90 is not limited to completely shielding light, and any plate that can shield even a small amount of light is acceptable. Preferably, the light transmittance of the shielding plate 90 is 20% or less, and more preferably 10% or less.

[0104] Next, the operation and effect of the present embodiment will be described. In the light emitting and receiving device 530 of the present embodiment, in addition to the operation and effect of the light emitting and receiving device 30 of the first embodiment, a shielding plate 90 for shielding light is disposed between the light emitting portion 70 and the pair of light receiving portions 80. Therefore, it is possible to prevent the light emitted from the light emitting portion 70 from directly entering the pair of light receiving portions 80.

[0105] In the light transmitting and receiving device 530 of the present embodiment, a shielding plate 90 that shields light is disposed between the light emitting unit 70 and the pair of light receiving units 80, and the shielding plate 90 and the second fixing portion 52 are integrated. Therefore, the light transmitting and receiving device 530 can simplify the manufacturing process as compared with a configuration in which the shielding plate 90 and the second fixing portion 52 are separately fixed to the first substrate 43.

[0106] In the light transmitting and receiving device 530 of the present embodiment, the second fixing portion 52 includes a base portion 55 and a pair of third claws 55A that respectively project from the base portion 55 toward the first substrate 43. The base portion 55 contacts the surface 43T of the first substrate 43 and, when inserted into the pair of third holes 43C respectively, the base portion 55 is moved along the surface 43T of the first substrate 43, so that the base portion 55 is pressed against the edge portions of the third holes 43c. The second fixing portion 52 also includes a pair of fitting portions 55B that respectively project from the base portion 55 toward the first substrate 43. The base portion 55 contacts the surface 43T of the first substrate 43 and, when the pair of third claws 55A are respectively inserted into the pair of third holes 43C, the pair of fitting portions 55B elastically deform in directions opposite to the direction in which they face each other. Also, when the base portion 55 contacts the surface 43T of the first substrate 43 and the pair of third claws 55A are respectively inserted into the pair of third holes 43C, the base portion 55 is moved along the surface 43T of the first substrate 43, so that the elastic deformation is eliminated and the pair of fitting portions 55B are respectively fitted into the pair of notch portions 43D. Therefore, as compared with a configuration in which a plurality of holes for fixing are provided in the second substrate, the wiring of the second substrate can be routed more easily. That is, when forming holes (through holes) for fixing in the second substrate 44, it is necessary to route the wiring (wiring pattern made of metal foil) avoiding the holes. However, if there are no holes, this necessity is eliminated and the degree of freedom of wiring is improved.

[0107] [Modification of the Second Embodiment] In the light transmitting and receiving device 530 of the foregoing embodiment, the first fixing portion 50 and the second fixing portion 52 were separate bodies. However, as shown in FIG. 17, the first fixing portion 50 and the second fixing portion 52 may be integrated. FIG. 17 shows an example in which the first fixing portion 50 and the second fixing portion 52 are integrated by a coupling portion 59. Thereby, compared with the configuration in which the first fixing portion 50 and the second fixing portion 52 are separately fixed to the first substrate 43, the positioning accuracy of the relative positions of the light emitting portion 70 and the pair of light receiving portions 80 can be improved.

[0108] Further, the shielding plate 90 is not limited to the mode of being configured integrally with the second fixing portion 52, and may be configured separately from the second fixing portion 52.

[0109] The present disclosure is not limited to the above, and it goes without saying that various modifications can be made within the scope not departing from the gist thereof other than the above.

[0110] Regarding the above embodiments, the following additional remarks are further disclosed.

[0111] (((1))) A substrate, A light emitting portion installed on an installation surface provided on the substrate such that an optical axis intersects the installation surface, A pair of light receiving portions respectively installed on a pair of inclined surfaces provided on the substrate so as to be inclined with respect to the installation surface and facing each other when viewed from the side opposite to the optical axis direction, A light transmitting and receiving device comprising:

[0112] (((2))) The substrate includes a main substrate having the installation surface, a pair of inclined substrates that are separate from the main substrate and constitute the inclined surfaces, and a first fixing portion that fixes the inclined substrates to the main substrate. The light transmitting and receiving device according to (((1))).

[0113] (((3))) A pair of flexible connection substrates that connect the main substrate and the pair of inclined substrates respectively, The pair of connection substrates are arranged to face each other so as to sandwich the pair of inclined substrates from both sides when viewed from the side opposite to the optical axis direction, the light emitting and receiving device according to (((2))).

[0114] (((4))) The first fixing portion includes a holding portion that holds the inclined substrate. The connection substrate, at least a part of the portion connected to the inclined substrate overlaps with the holding portion, the light emitting and receiving device according to (((3))).

[0115] (((5))) The main substrate includes a first substrate and a second substrate that constitutes the installation surface. The second substrate is fixed to the first substrate by a second fixing portion, the light emitting and receiving device according to any one of (((2))) to (((4))).

[0116] (((6))) The second fixing portion fixes the second substrate to the first substrate so that the interval between the first substrate and the second substrate becomes a predetermined interval, the light emitting and receiving device according to (((5))).

[0117] (((7))) The first substrate has a pair of first holes. The second substrate has a pair of second holes. The second fixing portion has a base portion, and a pair of first claws provided at portions that protrude from the base portion toward the first substrate and face each other in a state of being inserted into the pair of first holes and press against the edges of the pair of first holes, and a pair of second claws provided at portions on the opposite side of the portions that protrude from the base portion toward the second substrate and face each other in a state of being inserted into the pair of second holes and press against the edges of the pair of second holes. The light emitting and receiving device according to (((5))) or (((6))).

[0118] (((8))) The light emitting and receiving device according to any one of (((5))) to (((7))), wherein the first fixed portion and the second fixed portion are integral with each other.

[0119] (((9))) a fitting portion provided on either the first fixing portion or the second fixing portion; a fitted portion provided on the other of the first fixing portion and the second fixing portion and into which the fitting portion fits; The light emitting and receiving device according to any one of (((5))) to (((7))), comprising:

[0120] (((10))) The light emitting and receiving device according to any one of (((2))) to (((9))), wherein the inclined substrate is fixed to a front surface side of the main substrate including the installation surface via the first fixing portion.

[0121] (((11))) The light emitting and receiving device described in (((10))), wherein the pair of inclined surfaces are plate surfaces of the inclined substrate opposite the main substrate, and are inclined such that the distance between them narrows in the optical axis direction.

[0122] (((12))) The main substrate is provided with an opening penetrating therethrough in a thickness direction, The inclined substrate is fixed to a back surface side of the main substrate opposite to the front surface including the installation surface via the first fixing portion, A pair of the inclined surfaces are exposed from the openings, The light emitting and receiving device according to any one of (((2))) to (((9))).

[0123] (((13))) The first substrate is provided with a first opening and a second opening penetrating therethrough in a thickness direction, The inclined substrate is fixed to a rear surface side of the first substrate via the first fixing portion, and the second substrate is fixed to the rear surface side of the first substrate via the second fixing portion. The light emitting and receiving device according to any one of (((5))) to (((9))), wherein the pair of inclined surfaces are each exposed through the first opening, and the light emitting portions are each exposed through the second opening.

[0124] (((14))) The pair of inclined surfaces are inclined so that the distance between them becomes narrower in the direction opposite to the optical axis direction, for the light emitting and receiving device according to (((12))) or (((13))).

[0125] (((15))) The light emitting and receiving device according to (((1))), comprising a shielding plate for shielding light between the light emitting part and the pair of light receiving parts.

[0126] (((16))) Comprising a shielding plate for shielding light between the light emitting part and the pair of light receiving parts, The light emitting and receiving device according to (((5))), wherein the shielding plate and the second fixing part are integral.

[0127] (((17))) The light emitting and receiving device according to (((16))), wherein the first fixing part and the second fixing part are integral.

[0128] (((18))) The first substrate has a pair of third holes and a pair of cutout parts, The second fixing part is, a base part, a pair of third claws respectively protruding from the base part toward the first substrate, the base part contacting the surface of the first substrate, and in a state where the base part is inserted into the pair of third holes respectively, the base part is moved along the surface of the first substrate, so that the base part is pressed against the edge of the third hole; a pair of fitting parts respectively protruding from the base part toward the first substrate, the base part contacting the surface of the first substrate, and in a state where the pair of third claws are inserted into the pair of third holes respectively, elastically deforming in a direction opposite to the direction facing each other, and in a state where the base part contacts the surface of the first substrate and the pair of third claws are inserted into the pair of third holes respectively, the base part is moved along the surface of the first substrate, so that the elastic deformation is eliminated and the pair of fitting parts fit into the pair of cutout parts respectively; The light-emitting and light-receiving device according to ((16)) or ((17)), having

[0129] According to ((1)), the detection range of the object can be widened as compared with the configuration in which the light-emitting part and the light-receiving part are installed on the same plane of the substrate.

[0130] According to ((2)), the manufacturing of the substrate becomes easier as compared with the configuration in which the main substrate and the inclined substrate are integrally formed.

[0131] According to ((3)), the shake of the light-receiving part due to external force such as vibration can be suppressed as compared with the configuration in which the pair of connection substrates are arranged at positions shifted from each other when viewed from the side opposite to the optical axis direction.

[0132] According to ((4)), the fixing of the inclined substrate to the main substrate can be strengthened as compared with the configuration in which the portion of the connection substrate connected to the inclined substrate is at a location different from the holding part of the inclined substrate.

[0133] According to ((5)), the manufacturing of the substrate becomes easier as compared with the configuration in which the first substrate and the second substrate are integrally formed.

[0134] According to ((6)), the positioning accuracy of the light-emitting part is improved as compared with the configuration in which there is variation in the interval between the first substrate and the second substrate when the second substrate is fixed to the first substrate using the second fixing part.

[0135] According to ((7)), the portion where the claw parts of the pair of first claws are provided and the claw parts

[0136] of the pair of second claws are provided, the play of the second substrate with respect to the first substrate can be suppressed as compared with the configuration where they are the same.

[0137] According to ((8)), the positioning accuracy of the relative positions of the light-emitting part and the light-receiving part can be improved as compared with the configuration in which the first fixing part and the second fixing part are separately fixed to the first substrate.

[0138] According to ((9)), the positioning accuracy of the relative positions of the light emitting part and the light receiving part can be improved as compared with a configuration in which the first fixing part and the second fixing part are separately fixed to the first substrate.

[0139] According to ((10)), the light emitting part and the light receiving part can be installed while facing the front surface of the main substrate, as compared with a configuration in which an inclined substrate is provided on the back surface side of the main substrate.

[0140] According to ((11)), the space on the front surface side of the main substrate can be expanded as compared with a configuration in which a pair of inclined surfaces are on the plate surface of the inclined substrate opposite to the main substrate and the pair of inclined surfaces are inclined so that the distance between them increases in the optical axis direction.

[0141] According to ((12)), the amount by which the inclined substrate protrudes from the front surface of the main substrate can be reduced as compared with a configuration in which the inclined substrate is fixed to the front surface side of the substrate.

[0142] According to ((13)), the amount by which the inclined substrate and the second substrate protrude from the front surface of the first substrate can be reduced as compared with a configuration in which the inclined substrate and the second substrate are fixed to the front surface side of the first substrate.

[0143] According to ((14)), the space on the back surface side of the main substrate can be expanded as compared with a configuration in which a pair of inclined surfaces are on the plate surface of the inclined substrate opposite to the main substrate and the pair of inclined surfaces are inclined so that the distance between them increases in the optical axis direction.

[0144] According to ((15)), it is possible to prevent the light emitted from the light emitting part from directly entering the light receiving part.

[0145] According to ((16)), the manufacturing process can be simplified as compared with a configuration in which the shielding plate and the second fixing part are separately fixed to the first substrate.

[0146] According to ((17)), the positioning accuracy of the relative positions of the light emitting part and the light receiving part can be improved as compared with a configuration in which the first fixing part and the second fixing part are separately fixed to the first substrate.

[0147] According to ((18)), compared with the configuration in which a plurality of holes for fixing are provided in the second substrate, the wiring of the second substrate can be more easily routed.

Explanation of Reference Numerals

[0148] 30 Light emitting and receiving device 40 Substrate 41 Installation surface 42 Main substrate 43 First substrate 43A First hole 43C Third hole 43D Notch 44 Second substrate 44A Second hole 46 Tilted substrate 46A Tilted surface 50 First fixing portion 51A Holding portion 52 Second fixing portion 54 First claw 55 Base portion 55A Third claw 55B Fitting portion 55C Fourth claw 55D Guide 55E Fifth claw 55F Guide 56 Second claw 58 Connection substrate 59 Coupling portion 70 Light emitting portion 80 Light receiving portion 90 Shielding plate 130 Light emitting and receiving device 230 Light emitting and receiving device 330 Light emitting and receiving device 332 Opening (an example of an opening, a first opening) 430 Light emitting and receiving device 432 Opening (an example of a second opening) G Spacing L Optical axis

Claims

1. A substrate; a light emitting unit disposed on an installation surface of the substrate such that an optical axis of the light emitting unit intersects with the installation surface; a pair of light receiving units respectively installed on a pair of inclined surfaces that are provided on the substrate at an incline with respect to the installation surface and are arranged opposite to each other when viewed from the opposite side to the optical axis direction; A light emitting and receiving device comprising:

2. The light receiving and emitting device of claim 1 , wherein the substrate comprises a main substrate having the mounting surface, a pair of inclined substrates separate from the main substrate and constituting the inclined surface, and a first fixing portion fixing the inclined substrates to the main substrate.

3. a pair of flexible connection substrates respectively connecting the main substrate and the pair of inclined substrates; 3. The light emitting and receiving device according to claim 2, wherein the pair of connection substrates are disposed opposite to each other so as to sandwich the pair of inclined substrates from both sides when viewed from the side opposite to the optical axis direction.

4. The first fixing portion includes a holding portion that holds the inclined substrate, The light emitting and receiving device according to claim 3 , wherein at least a part of the portion of the connection board connected to the inclined board overlaps with the holding portion.

5. The main board includes a first board and a second board that constitutes the installation surface, The light emitting and receiving device according to claim 2 , wherein the second substrate is fixed to the first substrate by a second fixing portion.

6. The light receiving and emitting device according to claim 5 , wherein the second fixing portion fixes the second substrate to the first substrate such that a distance between the first substrate and the second substrate is a predetermined distance.

7. the first substrate has a pair of first holes; the second substrate has a pair of second holes; The second fixing portion has a base portion, a pair of first claws each protruding from the base portion toward the first substrate, and having claw portions provided on portions facing each other when inserted into the pair of first holes, the claw portions being pressed against edges of the pair of first holes, and a pair of second claws each protruding from the base portion toward the second substrate, and having claw portions provided on portions opposite the portions facing each other when inserted into the pair of second holes, the claw portions being pressed against edges of the pair of second holes. The light emitting and receiving device according to claim 5 .

8. The light emitting and receiving device according to claim 5 , wherein the first fixing portion and the second fixing portion are integral with each other.

9. a fitting portion provided on either the first fixing portion or the second fixing portion; a fitted portion provided on the other of the first fixing portion and the second fixing portion and into which the fitting portion fits; The light emitting and receiving device according to claim 5 .

10. The light emitting and receiving device according to claim 2 , wherein the inclined substrate is fixed to a front surface side of the main substrate including the mounting surface via the first fixing portion.

11. The light emitting and receiving device according to claim 10 , wherein the pair of inclined surfaces are plate surfaces of the inclined substrate opposite to the main substrate, and are inclined such that the distance between them narrows in the optical axis direction.

12. The main substrate is provided with an opening penetrating therethrough in a thickness direction, The inclined substrate is fixed to a back surface side of the main substrate opposite to the front surface including the installation surface via the first fixing portion, A pair of the inclined surfaces are exposed from the openings, The light emitting and receiving device according to claim 2 .

13. The first substrate is provided with a first opening and a second opening penetrating therethrough in a thickness direction, The inclined substrate is fixed to a rear surface side of the first substrate via the first fixing portion, and the second substrate is fixed to the rear surface side of the first substrate via the second fixing portion. The light emitting and receiving device according to claim 5 , wherein the pair of inclined surfaces are exposed from the first opening, and the light emitting portion is exposed from the second opening.

14. The light emitting and receiving device according to claim 12 , wherein the pair of inclined surfaces are inclined such that the distance between them narrows in a direction opposite to the optical axis direction.

15. The light receiving and emitting device according to claim 1 , further comprising a light shielding plate disposed between the light emitting portion and the pair of light receiving portions for blocking light.

16. a shielding plate for shielding light between the light emitting unit and the pair of light receiving units; The light receiving and emitting device according to claim 5 , wherein the shielding plate and the second fixing portion are integral with each other.

17. The light emitting and receiving device according to claim 16 , wherein the first fixing portion and the second fixing portion are integral with each other.

18. the first substrate has a pair of third holes and a pair of cutout portions; The second fixing portion is A base portion; a pair of third claws each protruding from the base portion toward the first substrate, the pair of third claws each being pressed against edges of the third holes as the base portion moves along the surface of the first substrate in a state in which the base portion is in contact with a surface of the first substrate and is inserted into the pair of third holes, respectively; a pair of fitting portions each protruding from the base portion toward the first substrate, elastically deforming in a direction opposite to the direction in which they face each other when the base portion is in contact with the surface of the first substrate and the pair of third claws are inserted into the pair of third holes, and the elastic deformation is released when the base portion is moved along the surface of the first substrate when the base portion is in contact with the surface of the first substrate and the pair of third claws are inserted into the pair of third holes, and fitting into the pair of cutout portions, respectively; The light emitting and receiving device according to claim 16 .

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