JP5869287B2 - Optical connector and signal processing apparatus - Google Patents

Description

  The present invention relates to an optical connector and a signal processing apparatus including the optical connector.

  There is known a rack mount server in which a large number of unit devices including circuit boards (system boards) on which electronic components are mounted are stored in a rack cabinet. Electronic components on the system board are configured so that signal transmission can be performed with electronic components on other system boards via a circuit board (backplane) installed perpendicular to the system board. ing.

  Conventionally, for signal transmission between system boards, it is common to use electrical signals transmitted by metal wiring, electrical cables, or the like. However, when high-speed and large-capacity (for example, GHz order) signal transmission is performed, high-quality signal transmission may be difficult due to noise or the like in a method using an electrical signal. Accordingly, an optical transmission method has been proposed in which optical waveguides are formed on the system board and the backplane, and signal transmission is performed using optical signals. Here, the optical waveguide of the system board and the optical waveguide of the back plane are connected by an optical connector. The optical connector includes a lens. For example, light emitted from the optical waveguide of the backplane is collected by the lens in the optical connector and introduced into the optical waveguide of the system board (the reverse is also true). ).

JP 2003-66281 A

  In the conventional optical connector, a lens of a general inverted optical system is used for an optical system that connects the optical waveguide in the system board and the optical waveguide in the backplane. For this reason, if the positional relationship between the optical waveguide and the lens is deviated, the condensing position of the lens is largely deviated, and it is difficult to align the optical waveguide and the lens.

  The present invention has been made in view of the above problems, and in an optical connector for connecting optical waveguides on two different substrates, an optical connector capable of easily aligning an optical system, and the optical connector An object of the present invention is to provide a signal processing apparatus including

The present invention is an optical connector for connecting a plurality of first optical waveguides formed on a first substrate and a plurality of second optical waveguides formed on a second substrate different from the first substrate, The second optical waveguide is disposed between the first optical waveguide and the second optical waveguide, and condenses the light emitted from the end of the first optical waveguide on the end of the second optical waveguide. A lens unit including a plurality of erecting equal-magnification optical system lenses for condensing light emitted from the end of the first optical waveguide, and the first optical waveguide, the second optical waveguide, and A holding member that holds the positional relationship of the lens constant, the first holding member that is aligned with the first optical waveguide and has a guide pin; the second optical waveguide that is aligned; a guide hole; A concave storage part for storing the lens part and formed around the storage part A second holding member having a plurality of press-fitting holes, a spacer for adjusting the position of the lens unit in the optical axis direction, and a pressing member for fixing the lens unit, the outer side of the lens unit being A holding member having a pressing member in which a plurality of press-fit pins are formed in a corresponding region, and the lens portion is held between the first holding member and the second holding member, and the guide pin Is inserted into the guide hole, the spacer and the lens part are sequentially stored in the storage part from the second holding member side, and the plurality of press-fit pins are inserted into the plurality of press-fit holes. Thus, the lens unit and the spacer are fixed to the second holding member by the pressing member .
The said structure WHEREIN: The said holding member can be set as the structure provided between the said 1st holding member and the said lens part, and the spring member which urges | biases the said lens part to the said 2nd holding member.

  In the above-described configuration, the number of the first optical waveguide and the second optical waveguide corresponding to one lens may be two or more.

  In the above configuration, the number of the first optical waveguide and the second optical waveguide corresponding to one lens may be one.

  In the above configuration, the lens unit is provided between the plurality of lenses arranged in a direction intersecting the optical axis, and light incident on one lens among the plurality of lenses is transmitted to another lens. It can be set as the structure containing the stray light prevention member for keeping it from entering.

  The said structure WHEREIN: The surface of these lenses can be set as the structure located inside the edge part of the said stray light prevention member.

In the above configuration, the lens unit, a collection of the plurality of lenses arranged in a direction crossing the optical axis, a first lens and a second lens separated into two in the direction of the optical axis, wherein And a diaphragm member provided between the first lens and the second lens and having a diaphragm hole formed in a region centered on the optical axis.

The present invention includes a first substrate on which a plurality of first optical waveguides are formed, a second substrate that is disposed on a plane that intersects the first substrate, and on which a plurality of second optical waveguides are formed, and a optical connector for connecting the plurality of second optical waveguide and the first optical waveguide, said optical connector is located between said second optical waveguide and said first optical waveguide, said first The light emitted from the end of one optical waveguide is condensed on the end of the second optical waveguide, and the light emitted from the end of the second optical waveguide is condensed on the end of the first optical waveguide. A holding member that holds a positional relationship between a lens unit including a plurality of erecting equal-magnification optical system lenses, the first optical waveguide, the second optical waveguide, and the lens constant, the first optical waveguide A first holding member aligned with the waveguide and having a guide pin; And a second holding member having a guide hole, a concave storage portion for storing the lens portion, and a plurality of press-fitting holes formed around the storage portion, and adjusting the position of the lens portion in the optical axis direction. A holding member including a spacer for performing the operation and a pressing member for fixing the lens unit, the pressing member having a plurality of press-fit pins formed in a region corresponding to the outside of the lens unit. The lens portion is sandwiched and held between the first holding member and the second holding member, the guide pin is inserted into the guide hole, and the storage portion includes a side of the second holding member. The spacer and the lens portion are stored in order, and the plurality of press-fit pins are inserted into the plurality of press-fit holes so that the lens portion and the spacer are fixed to the second holding member by the presser member. A signal processing apparatus characterized by being.

  According to the present invention, the optical system can be easily aligned in an optical connector for connecting optical waveguides on two different substrates.

FIG. 1 is an overall view of a signal processing apparatus including an optical connector according to a comparative example and Examples 1-2. FIG. 2 is a cross-sectional view around the optical connector according to the comparative example. FIG. 3 is a cross-sectional view of the periphery of the optical connector according to the first embodiment. FIG. 4 is a perspective view around the optical connector. FIG. 5 is a perspective view showing a detailed configuration of the optical connector. FIG. 6 is a cross-sectional view showing the internal structure of the optical connector. FIG. 7 is a cross-sectional view showing a detailed configuration of the lens array portion. FIG. 8 is a plan view of the optical connector. FIG. 9 is a diagram showing a mark for alignment. FIG. 10 is a cross-sectional view illustrating the configuration of the lens array portion of the optical connector according to the second embodiment. FIG. 11 is a perspective view of the periphery of the optical connector according to the third embodiment. FIG. 12 is a cross-sectional view around the optical connector.

  First, an optical connector according to a comparative example will be described.

  FIG. 1 is an overall view of a signal processing apparatus including an optical connector according to a comparative example and Examples 1 to 3, and is a view seen through a rack cabinet. The signal processing apparatus 100 is a rack mount server in which a plurality of system boards 20 a to 20 c are stacked and stored in the rack cabinet 10. Each of the system boards 20a to 20c is arranged in parallel to the bottom surface of the rack cabinet 10, and is electrically connected to each other through a back plane 30 arranged perpendicular to the bottom surface. Here, the system board 20 is an example of a first board on which electronic components are mounted, and the backplane 30 is an example of a second board that connects the system boards.

  Electronic components (not shown) including, for example, a CPU (Central Processing Unit), a memory circuit, a bridge circuit, a hard disk, and the like are mounted on the system board 20. A plurality of optical waveguides (hereinafter referred to as first optical waveguides 22) are formed inside or on the surface of the system board 20. The first optical waveguide 22 is optically connected to either the light emitting element 24 or the light receiving element 26 provided on the system board 20.

  Similar to the system board 20, a plurality of optical waveguides (hereinafter referred to as second optical waveguides 32) are formed in the backplane 30 on the inside or on the surface. The second optical waveguide 32 formed on the backplane 30 is optically connected to the first optical waveguide 22 formed on the system board 20 via the optical connector 40.

  The electrical signal output from the electronic component is converted into an optical signal by the light emitting element 24 and transmitted to another system board via the first optical waveguide 22 and the second optical waveguide 32. An optical signal output from another system board enters the light receiving element 26 through the first optical waveguide 22 and the second optical waveguide 32, is converted into an electric signal, and is input to the electronic component. The Thereby, the electronic device on one system board (for example, 20b) can transmit / receive a signal to / from the electronic device on another system board (for example, 20a, 20c).

  2A to 2C are schematic cross-sectional views of the periphery of the optical connector according to the comparative example, and the arrows in the drawing indicate the waveguide direction of light (signal). In this figure, the optical connector is replaced with a lens 150, but the optical functions are the same. In the optical connector according to the comparative example, an inverted optical system lens 150 used for a general optical connector is used. As shown in FIG. 2A, a mirror 34 is provided at the end of the second optical waveguide 32 of the backplane 30, and the light that reaches the end surface of the second optical waveguide 32 is reflected by the mirror 34. As a result, the light is diffused and emitted around the direction perpendicular to the surface of the backplane 30 (optical axis L).

  Of the light emitted from the second optical waveguide 32, the light incident on the lens 150 is collected at a predetermined position by the lens 150. As shown in FIG. 2A, when the positional relationship among the first optical waveguide 22, the second optical waveguide 32, and the lens 150 is correct, the light emitted from the lens 150 converges on the end surface of the first optical waveguide 22. Then, it is introduced into the first optical waveguide 22. Thereby, the second optical waveguide 32 and the first optical waveguide 22 are optically connected.

  Here, as shown in FIGS. 2B and 2C, the position of the lens 150 is relative to the optical axis L (the optical axis connecting the ends of the first optical waveguide 22 and the second optical waveguide 32). In the case of the vertical deviation, the condensing position of the light emitted from the lens 150 is similarly displaced. As in the comparative example, when a lens of an inverted optical system is used as the lens 150, the deviation of the condensing position becomes larger than the deviation of the lens position. As a result, light may not be correctly introduced into the first optical waveguide 22 and the first optical waveguide 22 and the second optical waveguide 32 may not be optically connected. A similar phenomenon can occur when light emitted from the first optical waveguide 22 is introduced into the second optical waveguide 32. In particular, when optical waveguides on substrates orthogonal to each other are connected as in the optical connector according to the comparative example, the lens is likely to be displaced in the direction perpendicular to the optical axis L.

  In order to suppress such a shift, the optical connector according to the comparative example is required to have high accuracy in positioning the first optical waveguide 22, the second optical waveguide 32, and the lens 150. On the other hand, the Example described below demonstrates the optical connector which can perform said position alignment more easily.

  3A to 3C are schematic cross-sectional views of the periphery of the optical connector according to the first embodiment, and correspond to FIGS. 2A to 2C of the comparative example, respectively. In Example 1, a lens 50 of an erecting equal-magnification optical system is used instead of the lens 150 of the inverted optical system in the comparative example. As the lens 50, for example, a gradient index lens can be used. Other configurations are the same as those of the comparative example, and detailed description thereof is omitted.

  The erecting equal-magnification optical system has a feature that an image having the same size and position as the object side is formed on the opposite side of the lens. When a plurality of erecting equal-magnification optical system lenses are arranged, the images formed by each lens are continuous, and an image as if it were one large lens is obtained. For this reason, even when the position of the lens 50 is deviated perpendicularly to the optical axis L as shown in FIGS. 3B to 3C, the condensing position of the lens 50 does not change. Therefore, if the positional relationship between the first optical waveguide 22 and the second optical waveguide 32 is correct, the light emitted from the second optical waveguide 32 is condensed on the first optical waveguide 22 and the two optical waveguides are optically coupled to each other. Can be connected.

  FIG. 4 is a perspective view illustrating a detailed configuration around the optical connector according to the first embodiment, and is a diagram seen from the back side of the backplane 30 through components such as the optical connector. As shown in the figure, the system board 20 is formed with a first optical waveguide section 28 including an assembly of a plurality of first optical waveguides (not shown in the figure), and the backplane 30 has a plurality of second optical waveguides. A second optical waveguide unit 38 including an aggregate of waveguides (not shown in the figure) is formed. Among the components of the optical connector 40, the first holding member 60 is attached to the first optical waveguide portion 28, and the second holding member 70 is attached to the second optical waveguide portion 38. In the present embodiment, the end portion of the first optical waveguide portion 28 is bent in the vertical direction from the surface of the system board 20, and the first holding member 60 is attached to the bent end portion. The attachment method of the 1st holding member 60 is not limited to the said form.

  The first holding member 60 is aligned with the plurality of first optical waveguides 22, and the second holding member 70 is aligned with the plurality of second optical waveguides 32. The first holding member 60 is engaged with the second holding member 70 by a guide pin 62 provided on the surface thereof. At this time, the lens array including the lens 50 illustrated in FIG. 3 is sandwiched and held between the first holding member 60 and the second holding member 70.

  FIG. 5 is a perspective view illustrating a detailed configuration of the optical connector according to the first embodiment. 6A is a cross-sectional view along the plane A of FIG. 5, and FIG. 6B is a cross-sectional view along the plane B. As shown in the drawing, the optical connector 40 includes a lens array 52 as an example of a lens unit, a first holding member 60 as an example of a holding member that holds the lens unit, a second holding member 70, a spring member 80, and a spacer 82. And a pressing member 84.

  A concave storage portion 72 is formed at the center of the second holding member 70, and the spacer 82 and the lens array 52 are stored in the storage portion 72 in this order. The spacer 82 is a member for adjusting the position of the lens array 52 in the optical axis direction, and a material capable of transmitting light is used. A plurality of guide holes 74 and a plurality of press-fitting holes 76 are formed around the opening of the storage portion 72 in the second holding member 70. The guide holes 74 and the press-fit holes 76 are formed on two opposing sides. An opening 79 is formed at the center of the second holding member 70.

  The lens array 52 is provided with a receiving hole 56 for inserting the spring member 80 on the outer surface of the lens region 54 where the lens is disposed. An opening 86 is formed in the holding member 84 at a position corresponding to the lens region 54 of the lens array 52, and a plurality of press-fit pins 88 and a through-hole 89 through which the guide pins 62 of the first holding member 60 penetrate in the periphery. Is provided. The press-fit pin 88 of the presser member 84 is inserted into the press-fit hole 76 of the second holding member 70. Thereby, the lens array 52 and the spacer 82 are fixed to the second holding member 70 by the pressing member 84. At this time, the lens array 52 is biased toward the second holding member 70 by the spring member 80.

  An opening 64 is formed in the first holding member 60 at a position corresponding to the lens region 54 of the lens array 52, and a guide pin 62 is formed at a position corresponding to the guide hole 74 of the second holding member 70. The guide pin 62 passes through the through hole 89 of the pressing member 84 and is inserted into the guide hole 74. Thereby, the 1st holding member 60 and the 2nd holding member 70 are mutually fixed.

  In addition, alignment holes (68, 78) for alignment with the optical waveguide are provided in the outer peripheral portions of the first holding member 60 and the second holding member 70, respectively. This point will be described in detail with reference to FIG.

  FIGS. 7A to 7D are diagrams showing a detailed configuration of the lens array 52, and are cross-sectional views of the lens array 52 cut along a plane including the optical axes of a plurality of lenses. As the configuration of the lens array 52, any of FIGS. 7A to 7D may be used. As a property common to all the forms, the lens array 52 includes a plurality of lenses 50 arranged in a direction intersecting the optical axis, and a stray light preventing member 42 provided between the lenses 50. The stray light preventing member 42 is a light blocking member for preventing light incident on one lens from entering (stray light) on another lens. For example, a black light blocking member can be used. The stray light preventing member 42 is inserted in parallel with the optical axis so as to extend from the main surface on the first optical waveguide side in the lens array 52 to the main surface on the second optical waveguide side.

  In FIG. 7A, a single lens is used as the lens 50, and its end surface is formed outside (or at the same position) the end of the stray light preventing member 42. According to this configuration, more light can be collected. In FIG. 7B, a single lens is used as the lens 50, and its end surface is formed inside the stray light preventing member 42. According to this configuration, stray light can be more reliably suppressed. FIGS. 7C to 7D are examples in which two lens groups having the same optical axis are used as the lens 50. When using a combination lens, each of the combination lenses may be arranged outside (or at the same position) as the end of the stray light prevention member 42 as shown in FIG. 7C, or as shown in FIG. The stray light preventing member 42 may be disposed inside.

  FIG. 8 is a plan view of the optical connector 40 seen from the first holding member 60 side. As shown in the figure, the optical connector 40 is formed with a guide hole 74 (guide pin 62), a press-fit hole 76 (press-fit pin 88), and alignment holes (68, 78). Among these, the alignment holes 68 and 78 are through holes. As shown in FIGS. 4 and 8, when the first optical waveguide 22 and the first holding member 60 are aligned, the alignment hole 68 of the first holding member 60 is formed from the second holding member 70 side. Then, the alignment mark drawn on the first optical waveguide unit 28 is confirmed. When the second optical waveguide 32 and the second holding member 70 are aligned, the second optical waveguide unit 38 is aligned with the second holding member 70 through the alignment hole 78 from the first holding member 60 side. Check the alignment mark drawn.

  FIGS. 9A and 9B are examples of alignment holes (68, 78) and marks. The shape of the mark 44 may be a cross shape as shown in FIG. 9A, or may be a circle as shown in FIG. Moreover, you may use the mark of shapes other than this. As shown in the drawing, the alignment between the optical waveguide and the holding member can be easily performed by performing alignment so that the mark 44 is positioned at the center of the alignment hole (68, 78).

  According to the optical connector of Example 1, an erecting equal-magnification optical system lens is used for the lens portion of the optical connector that connects a plurality of optical waveguides formed on different substrates. Thereby, even if the position of the lens is slightly shifted in the direction perpendicular to the optical axis, the condensing position of the lens does not change, so that the optical connection between the optical waveguides is not affected. For this reason, compared with the optical connector which concerns on a comparative example, position alignment of an optical waveguide and a lens can be performed easily.

  In particular, as in Example 1, when connecting the optical waveguides of the substrates arranged on two intersecting planes, compared to connecting the optical waveguides of the substrates arranged on the same plane, The above-mentioned lens position is likely to shift. Further, when the distance between the optical waveguides is reduced in order to reduce the size of the apparatus, the lens is required to be aligned with higher accuracy. The optical connector according to the present embodiment is particularly suitable in such a case.

  The second embodiment is an example in which the configuration for preventing stray light in the lens array is changed. Since the configuration of the optical connector other than the lens array portion is the same as that of the first embodiment, detailed description thereof is omitted.

  FIG. 10A is a cross-sectional view (corresponding to FIGS. 7A to 7C of Example 1) illustrating the configuration of the lens array portion of the optical connector according to Example 2, and FIG. ) Is an exploded view of the lens array shown in FIG. As shown in the figure, the lens array 52 includes a first lens 50a and a first lens 50a in which an assembly of a plurality of lenses 50 arranged in a direction intersecting the optical axis (dotted line in the figure) is separated into two in the direction of the optical axis. A second lens 50b is included. Unlike Example 1, no stray light prevention member is provided between the lenses 50, and a diaphragm member 46 is disposed between the first lens 50a and the second lens 50b. The lens array according to Example 2 is also an erecting equal-magnification optical system as in Example 1.

  In the diaphragm member 46, a diaphragm hole 48 is formed in a region centering on the optical axis of each lens 50, and the other region is, for example, a black light shielding member. The first lens 50a and the second lens 50b are adjusted so that the light incident from the end of each lens is condensed on the aperture hole 48 located on its own optical axis. Thereby, since the light incident from the other lens is blocked by the diaphragm member 46, interference (stray light) of light between adjacent lenses can be suppressed.

  According to the optical connector according to the second embodiment, stray light in the lens array can be suppressed as in the first embodiment. Further, by using a lens array of an erecting equal-magnification optical system, the optical waveguide and the lens can be easily aligned.

  Example 3 is an example in which a plurality of optical waveguides are associated with one lens.

  11 is a perspective view of the periphery of the optical connector according to the third embodiment, and FIG. 12 is a sectional view thereof (corresponding to FIG. 3 of the first embodiment). As shown in FIG. 12, on the system board 20, the first optical waveguides 22a and 22b are formed in different upper and lower layers. The backplane 30 is formed with a second optical waveguide 32a extending from above and a second optical waveguide 32b extending from below, and the two are separated. Mirrors (34a, 34b) are provided at the ends of the second optical waveguides (32a, 32b), respectively, and light emitted from the upper second optical waveguide 32a enters the upper first optical waveguide 22a. Light emitted from the lower second optical waveguide 32b is incident on the lower first optical waveguide 22b.

  In this embodiment, as shown in FIG. 11, one erecting equal-magnification optical system is used for each set of four optical waveguides (first optical waveguides 22a to 22d and second optical waveguides 32a to 32d in FIG. 11). The system lens 50 is configured to correspond. As described in the first embodiment, in the erecting equal magnification optical system, an image having the same size and position as the object side is formed on the opposite side of the lens 50. For this reason, the light emitted from the second optical waveguides 32a to 32d is condensed at the original position on the opposite side of the lens 50 (the end of the first optical waveguides 22a to 22d). For example, in FIG. 12, the light emitted from the upper second optical waveguide 32a is directed to the upper first optical waveguide 22a, and the light emitted from the lower second optical waveguide 32b is directed to the lower first optical waveguide 22b. Has been introduced respectively. Although not shown in FIG. 11, other optical waveguides are also connected to each other through corresponding lenses in the same manner as described above.

  With the optical connector according to the third embodiment, the size of the lens is increased by utilizing the property of the erecting equal-magnification optical system that the condensing position is the same as that on the object side, and the first corresponding to one lens. Each of the number of optical waveguides and second optical waveguides can be two or more. Thereby, compared with Examples 1-2, reduction of a number of parts and simplification of a manufacturing process can be aimed at.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed.

DESCRIPTION OF SYMBOLS 10 Cabinet 20 System board 22 1st optical waveguide 24 Light emitting element 26 Light receiving element 28 Optical waveguide part 30 Back plane 32 2nd optical waveguide 34 Mirror 38 2nd optical waveguide part 40 Optical connector 42 Stray light prevention member 44 Mark 46 Diaphragm member 48 Diaphragm Hole 50 Lens 50a First lens 50b Second lens 52 Lens array 60 First holding member 62 Guide pin 68 Positioning hole 70 Second holding member 72 Storage part 74 Guide hole 76 Press-fit hole 78 Positioning hole 80 Spring member 82 Spacer 84 Presser member 88 Press-fit pin 100 Signal processing device

Claims (8)

An optical connector for connecting a plurality of first optical waveguides formed on a first substrate and a plurality of second optical waveguides formed on a second substrate different from the first substrate,
The second optical waveguide is disposed between the first optical waveguide and the second optical waveguide, and condenses the light emitted from the end of the first optical waveguide on the end of the second optical waveguide. A lens unit including a plurality of erecting equal-magnification optical system lenses that collect light emitted from the end of the first optical waveguide on the end of the first optical waveguide ;
A holding member for maintaining a fixed positional relationship between the first optical waveguide, the second optical waveguide, and the lens, the first holding member being aligned with the first optical waveguide and having a guide pin; A second holding member which is aligned with the second optical waveguide and has a guide hole, a concave storage portion for storing the lens portion, and a plurality of press-fitting holes formed around the storage portion; and light of the lens portion A spacer for adjusting the position in the axial direction, and a pressing member for fixing the lens unit, the pressing member having a plurality of press-fit pins formed in a region corresponding to the outside of the lens unit. A holding member ,
The lens portion is held between the first holding member and the second holding member, and the guide pin is inserted into the guide hole,
In the storage portion, the spacer and the lens portion are sequentially stored from the second holding member side,
The optical connector, wherein the plurality of press-fitting pins are inserted into the plurality of press-fitting holes, whereby the lens portion and the spacer are fixed to the second holding member by the pressing member . 2. The light according to claim 1, wherein the holding member includes a spring member that is provided between the first holding member and the lens unit and biases the lens unit toward the second holding member. connector. The optical connector according to claim 1 or 2 , wherein the number of the first optical waveguide and the second optical waveguide corresponding to one lens is two or more. The number of the first optical waveguide and said second optical waveguide, the optical connector according to claim 1 or 2, characterized in that each one corresponding to one of said lens. The lens unit is provided between the plurality of lenses arranged in a direction intersecting the optical axis so that light incident on one lens among the plurality of lenses does not enter another lens. the optical connector according to any one of claims 1-4, characterized in that it comprises a stray light prevention member for. 6. The optical connector according to claim 5 , wherein surfaces of the plurality of lenses are located inside an end portion of the stray light preventing member. The lens part is
A first lens and a second lens obtained by separating an assembly of the plurality of lenses arranged in a direction intersecting the optical axis into two in the direction of the optical axis;
A diaphragm member provided between the first lens and the second lens and having a diaphragm hole formed in a region centered on the optical axis;
The optical connector according to any one of claims 1 to 4, characterized in that it comprises a. A first substrate on which a plurality of first optical waveguides are formed;
A second substrate disposed on a plane intersecting the first substrate and having a plurality of second optical waveguides formed thereon;
An optical connector for connecting the plurality of first optical waveguides and the plurality of second optical waveguides;
The optical connector is
The second optical waveguide is disposed between the first optical waveguide and the second optical waveguide, and condenses the light emitted from the end of the first optical waveguide on the end of the second optical waveguide. A lens unit including a plurality of erecting equal-magnification optical system lenses that collect light emitted from the end of the first optical waveguide on the end of the first optical waveguide ;
A holding member for maintaining a fixed positional relationship between the first optical waveguide, the second optical waveguide, and the lens, the first holding member being aligned with the first optical waveguide and having a guide pin; A second holding member which is aligned with the second optical waveguide and has a guide hole, a concave storage portion for storing the lens portion, and a plurality of press-fitting holes formed around the storage portion; and light of the lens portion A spacer for adjusting the position in the axial direction, and a pressing member for fixing the lens unit, the pressing member having a plurality of press-fit pins formed in a region corresponding to the outside of the lens unit. A holding member ,
The lens portion is held between the first holding member and the second holding member, and the guide pin is inserted into the guide hole,
In the storage portion, the spacer and the lens portion are sequentially stored from the second holding member side,
The signal processing device, wherein the plurality of press-fitting pins are inserted into the plurality of press-fitting holes, whereby the lens portion and the spacer are fixed to the second holding member by the pressing member .

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