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WO2016031603A1 - Réceptacle optique et module d'éclairage - Google Patents

Réceptacle optique et module d'éclairage Download PDF

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Publication number
WO2016031603A1
WO2016031603A1 PCT/JP2015/073012 JP2015073012W WO2016031603A1 WO 2016031603 A1 WO2016031603 A1 WO 2016031603A1 JP 2015073012 W JP2015073012 W JP 2015073012W WO 2016031603 A1 WO2016031603 A1 WO 2016031603A1
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WIPO (PCT)
Prior art keywords
optical
receptacle
optical receptacle
photoelectric conversion
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/JP2015/073012
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English (en)
Japanese (ja)
Inventor
亜耶乃 今
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Enplas Corp
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Enplas Corp
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Filing date
Publication date
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Publication of WO2016031603A1 publication Critical patent/WO2016031603A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/0239—Combinations of electrical or optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements

Definitions

  • the present invention relates to an optical receptacle and an optical module having the same.
  • optical communications using optical transmission bodies such as optical fibers and optical waveguides have been provided with light emitting elements such as surface emitting lasers (for example, vertical cavity surface emitting lasers (VCSELs)).
  • An optical module is used.
  • the optical module includes one or two or more photoelectric conversion elements (light-emitting elements or light-receiving elements) and transmission or reception optical coupling elements (hereinafter also referred to as “optical receptacles”) (for example, see Patent Document 1). ).
  • FIG. 1 is a diagram showing a configuration of an optical coupling element 10 described in Patent Document 1.
  • 1A is a plan view of the optical coupling element 10
  • FIG. 1B is a bottom view
  • FIG. 1C is a front view
  • FIG. 1D is a right side view.
  • the optical coupling element 10 includes a first lens surface 11 (incident surface) on which light from a VCSEL (light emitting element) (not shown) is incident, a total reflection surface 12 that reflects light incident on the first lens surface 11, and a total reflection surface 12.
  • VCSEL light emitting element
  • a second lens surface 13 (outgoing surface) that emits the light reflected by the reflecting surface 12 toward an end face of the optical fiber (not shown), and a positioning convex portion for positioning the optical fiber with respect to the optical coupling element 10 14 and a positioning recess 15 for positioning the VCSEL with respect to the optical coupling element 10.
  • the optical coupling element 10 is disposed on a substrate on which a VCSEL is disposed and is used in a state where an optical fiber is connected. As described above, the optical coupling element 10 can appropriately perform optical coupling between the VCSEL and the end face of the optical fiber while easily positioning the VCSEL and the optical fiber.
  • the optical coupling element 10 described in Patent Document 1 can be integrally formed by injection molding using a thermoplastic transparent resin. Specifically, the optical coupling element 10 is manufactured by pouring a thermoplastic transparent resin into a mold cavity, cooling and solidifying, and then releasing the optical coupling element 10.
  • the optical coupling element 10 optical receptacle
  • the total reflection surface 12 is slightly deformed by molding shrinkage.
  • the optical coupling element 10 uses a light emitting element (photoelectric conversion element) and an optical fiber (optical transmission body) as an optical device.
  • the optical coupling element 10 uses a light emitting element (photoelectric conversion element) and an optical fiber (optical transmission body) as an optical device.
  • a first object of the present invention is to provide an optical receptacle that hardly causes deformation of a reflecting surface due to molding shrinkage even when manufactured by injection molding.
  • the second object of the present invention is to provide an optical module having this optical receptacle.
  • An optical receptacle according to the present invention is disposed between one or two or more photoelectric conversion elements and one or two or more optical transmission bodies, and the one or two or more photoelectric conversion elements and the one or two or more photoelectric conversion elements
  • One or more first optical surfaces to be emitted toward the photoelectric conversion element, and light incident on the first optical surface and passing through the inside are emitted toward the end surface of the optical transmission body, or the optical transmission body
  • One or two or more second optical surfaces for entering the light emitted from the end face of the light and the light incident on the first optical surface are reflected toward the second optical surface or incident on the second optical surface Reflecting the reflected light toward the first optical surface If, anda located wall portion so as to face each other across the groove to the reflecting surface, the groove, both ends in communication with the outside in the longitudinal direction, a configuration.
  • An optical module according to the present invention is disposed on a substrate, one or more photoelectric conversion elements disposed on the substrate, and the first optical surface is opposed to the photoelectric conversion element.
  • the optical receptacle according to the present invention is employed.
  • the present invention it is possible to provide an optical receptacle in which even if manufactured by injection molding, the reflective surface is hardly deformed by molding shrinkage. Since the optical receptacle according to the present invention has high accuracy of the reflecting surface, the photoelectric conversion element and the optical transmission body can be optically and appropriately coupled even at a high transmission speed.
  • FIG. 1A to 1D are diagrams showing a configuration of an optical receptacle according to Patent Document 1.
  • FIG. FIG. 2 is a cross-sectional view of the optical module according to the embodiment.
  • 3A and 3B are perspective views of the optical receptacle according to the embodiment.
  • 4A to 4E are diagrams showing the configuration of the optical receptacle according to the embodiment.
  • 5A and 5B are perspective views of an optical receptacle according to Comparative Example 1.
  • FIG. 6A to 6E are diagrams showing a configuration of an optical receptacle according to Comparative Example 1.
  • FIG. 7A and 7B are perspective views of an optical receptacle according to Comparative Example 2.
  • FIG. 8A to 8E are diagrams showing the configuration of the optical receptacle according to the comparative example 2.
  • FIG. 9A and 9B are graphs showing the amount of displacement of the reflecting surface due to molding contraction of the optical receptacle according to the embodiment and Comparative Examples 1 and 2.
  • FIG. 10A to 10C are diagrams for explaining distortion due to molding shrinkage of the optical receptacle according to the embodiment and Comparative Examples 1 and 2.
  • FIG. 2 is a cross-sectional view of the optical module 100 according to the embodiment of the present invention.
  • the cross section of the optical receptacle 130 is not hatched in order to show the optical path in the optical receptacle 130.
  • the optical module 100 includes a substrate 110, one or more photoelectric conversion elements 120, and an optical receptacle 130.
  • the optical module 100 is used with the optical transmission body 140 connected to the optical receptacle 130.
  • the substrate 110 1 or two or more photoelectric conversion elements 120 and an optical receptacle 130 are disposed on the substrate 110.
  • convex portions corresponding to positioning concave portions 136 of an optical receptacle 130 described later are formed on the substrate 110.
  • the optical receptacle 130 can be fixed at a predetermined position with respect to the photoelectric conversion element 120 disposed on the substrate 110.
  • the material of the substrate 110 is not particularly limited.
  • the substrate 110 is, for example, a glass composite substrate or a glass epoxy substrate.
  • the photoelectric conversion element 120 is a light emitting element or a light receiving element, and is disposed on the substrate 110.
  • a plurality (12) of photoelectric conversion elements 120 are arranged on the substrate 110.
  • a light emitting element is used as the photoelectric conversion element 120.
  • a light receiving element is used as the photoelectric conversion element 120.
  • the light emitting element is, for example, a vertical cavity surface emitting laser (VCSEL).
  • the light receiving element is, for example, a photo detector.
  • the optical receptacle 130 is disposed on the substrate 110 such that a first optical surface 131 described later faces the photoelectric conversion element 120.
  • the optical receptacle 130 optically couples the photoelectric conversion element 120 and the end face of the optical transmission body 140 while being disposed between the photoelectric conversion element 120 and the optical transmission body 140.
  • the optical receptacle 130 emits light emitted from the photoelectric conversion element 120 (light emitting element) toward the end face of the optical transmission body 140.
  • the optical receptacle 130 In the optical module 100 for reception, the optical receptacle 130 emits light emitted from the end face of the optical transmission body 140 toward the photoelectric conversion element 120 (light receiving element).
  • optical module 100 having both the light-emitting element and the light-receiving element as the photoelectric conversion element 120 functions as both a transmission optical module and a reception optical module.
  • the configuration of the optical receptacle 130 will be described in detail separately.
  • the type of the optical transmission body 140 is not particularly limited. Examples of the type of the optical transmission body 140 include an optical fiber and an optical waveguide. Although not particularly illustrated, the optical transmission body 140 is connected to the optical receptacle 130 via a ferrule. The ferrule has a concave portion corresponding to a positioning convex portion 135 of an optical receptacle 130 described later. By fitting the positioning convex portion 135 into the concave portion, the end face of the optical transmission body 140 can be fixed at a predetermined position with respect to the optical receptacle 130. In the present embodiment, the optical transmission body 140 is an optical fiber. The optical fiber may be a single mode method or a multimode method.
  • FIG. 3A is a perspective view seen from the upper side (top surface side) of the optical receptacle 130 according to the present embodiment
  • FIG. 3B is a perspective view seen from the lower side (bottom surface side).
  • 4A is a plan view of the optical receptacle 130
  • FIG. 4B is a bottom view
  • FIG. 4C is a front view
  • FIG. 4D is a rear view
  • FIG. 4E is a right side view.
  • the optical receptacle 130 is a substantially rectangular parallelepiped member.
  • the optical receptacle 130 includes one or more first optical surfaces 131, a reflecting surface 132, one or more second optical surfaces 133, a wall portion 134, a positioning convex portion 135, and a positioning concave portion 136.
  • the optical receptacle 130 is formed using a material that transmits light with a wavelength used for optical communication. Examples of the material of the optical receptacle 130 include transparent resins such as polyetherimide (PEI) and cyclic olefin resin.
  • PEI polyetherimide
  • the optical receptacle 130 can be manufactured by injection molding, for example.
  • the first optical surface 131 allows light emitted from the photoelectric conversion element 120 (light emitting element) to enter the inside of the optical receptacle 130 or is incident on the second optical surface 133 (described later), and is reflected on the reflecting surface 132 (described later). It is an optical surface that emits the reflected light toward the photoelectric conversion element 120 (light receiving element).
  • the first optical surface 131 is disposed on the back surface of the optical receptacle 130 so as to face the photoelectric conversion element 120.
  • twelve first optical surfaces 131 are arranged in a row along the long side direction on the bottom surface of the recess provided on the back side of the optical receptacle 130.
  • the shape of the first optical surface 131 is not particularly limited.
  • the first optical surface 131 is a convex lens surface that is convex toward the photoelectric conversion element 120. Further, the planar view shape of the first optical surface 131 is a circle.
  • the central axis of the first optical surface 131 is preferably perpendicular to the light emitting surface or the light receiving surface of the photoelectric conversion element 120 (and the surface of the substrate 110).
  • the central axis of the first optical surface 131 preferably coincides with the optical axis of light emitted from the photoelectric conversion element 120 (light emitting element) or light incident on the photoelectric conversion element 120 (light receiving element). Note that the number of the first optical surfaces 131 may be one.
  • the reflection surface 132 reflects light incident on the first optical surface 131 toward the second optical surface 133 or reflects light incident on the second optical surface 133 (described later) toward the first optical surface 131. It is an optical surface.
  • the reflective surface 132 is inclined so as to approach the optical transmission body 140 (front side) from the bottom surface of the optical receptacle 130 toward the top surface.
  • the inclination angle of the reflecting surface 132 is not particularly limited. In the present embodiment, the inclination angle of the reflection surface 132 is 45 ° with respect to the optical axis of the light incident on the reflection surface 132.
  • the shape of the reflective surface 132 is not particularly limited. In the present embodiment, the shape of the reflecting surface 132 is a plane. The light incident on the first optical surface 131 or the second optical surface 133 is incident on the reflecting surface 132 at an incident angle larger than the critical angle.
  • the second optical surface 133 causes the light incident on the first optical surface 131 and reflected by the reflecting surface 132 to be emitted toward the end surface of the light transmission body 140, or the light emitted from the end surface of the light transmission body 140.
  • This is an optical surface that enters the inside of the optical receptacle 130.
  • the second optical surface 133 is disposed on the front-side surface of the optical receptacle 130 so as to face the end surface of the optical transmission body 140.
  • twelve second optical surfaces 133 are arranged in a line along the long side direction on the bottom surface of the recess provided on the front side of the optical receptacle 130.
  • the shape of the second optical surface 133 is not particularly limited.
  • the second optical surface 133 is a convex lens surface that is convex toward the end surface of the optical transmission body 140.
  • the central axis of the second optical surface 133 is preferably coincident with the central axis of the end surface of the optical transmission body 140.
  • the number of the second optical surfaces 133 may be one.
  • the wall portion 134 suppresses deformation of the reflecting surface 132 due to molding shrinkage when the optical receptacle 130 is manufactured by injection molding.
  • the wall portion 134 is disposed on the back side of the optical receptacle 130 so as to face the reflecting surface 132 with the groove 137 interposed therebetween.
  • the wall 134 is formed integrally with the optical receptacle 130.
  • the shape and size of the wall portion 134 are not particularly limited as long as the deformation of the reflecting surface 132 due to molding shrinkage can be prevented. Further, from the viewpoint of effectively suppressing the deformation of the reflecting surface 132 during injection molding, for example, as shown in FIG. 2, the first optical surface 131 and the tip of the wall portion 134 in the depth direction of the groove 137.
  • the distance (d1) between the first optical surface 131 and the point at which the light incident on the first optical surface 131 reaches the reflecting surface 132 (d2) is longer than the distance (d1) between the first optical surface 131 and the first optical surface 131.
  • the reference position of the first optical surface 131 is not particularly limited, but is, for example, the center of the first optical surface 131.
  • the distance from the bottom surface of the optical receptacle 130 to the tip of the wall 134 is the same as the distance from the bottom surface of the optical receptacle 130 to the top surface.
  • the groove 137 is formed on the top surface side of the optical receptacle 130 so as to be positioned between the reflection surface 132 and the wall portion 134, and includes the reflection surface 132 and the front surface of the wall portion 134.
  • the groove 137 has both ends (the left side end and the right side end) communicating with the outside in the length direction.
  • the reflecting surface 132 is inclined to the front side from the bottom surface of the optical receptacle 130 toward the top surface. Therefore, in the present embodiment, the shape of the groove 137 is a substantially triangular prism shape.
  • the positioning convex portion 135 is fitted into a concave portion formed in the ferrule that holds the optical transmission body 140, thereby positioning the end surface of the optical transmission body 140 at an appropriate position with respect to the second optical surface 133.
  • the shape and size of the positioning convex portion 135 are not particularly limited, and are appropriately set according to the shape of the ferrule.
  • the positioning convex portion 135 is a substantially cylindrical convex portion.
  • the positioning concave portion 136 positions the first optical surface 131 of the optical receptacle 130 at an appropriate position with respect to the photoelectric conversion element 120 by fitting a convex portion formed on the substrate 110.
  • the shape and size of the positioning recess 136 are not particularly limited, and are appropriately set according to the shape of the substrate 110 and the like.
  • the positioning recess 136 is a substantially cylindrical recess.
  • optical receptacle 130 The configuration of the optical receptacle 130 has been described above. Here, the optical path in the optical module 100 according to the present embodiment will be described.
  • the light emitted from the photoelectric conversion element 120 is incident on the inside of the optical receptacle 130 at the first optical surface 131.
  • incident light is converted into collimated light by the first optical surface 131 and travels toward the reflecting surface 132.
  • the incident light is reflected by the reflecting surface 132 and travels toward the second optical surface 133.
  • the light reflected by the reflecting surface 132 is emitted to the outside of the optical receptacle 130 by the second optical surface 133 and reaches the end surface of the optical transmission body 140.
  • the emitted light is collected at the center of the end face of the optical transmission body 140 by the second optical surface 133.
  • the light emitted from the end face of the optical transmission body 140 is incident on the inside of the optical receptacle 130 at the second optical surface 133.
  • the light incident on the optical receptacle 130 is converted into collimated light by the second optical surface 133 and travels toward the reflecting surface 132.
  • the incident light is reflected by the reflecting surface 132 and travels toward the first optical surface 131.
  • the light reflected by the reflecting surface 132 is emitted to the outside of the optical receptacle 130 by the first optical surface 131 and reaches the photoelectric conversion element 120 (light receiving element).
  • the emitted light is collected by the first optical surface 131 at the center of the light receiving surface of the photoelectric conversion element 120 (light receiving element).
  • the optical receptacle 130 can optically appropriately couple the photoelectric conversion element 120 and the end face of the optical transmission body 140.
  • the optical receptacle 130 can be manufactured by injection molding, for example.
  • the reflecting surface 132 is likely to be deformed due to molding shrinkage.
  • the reflecting surface 132 is an optical surface that reflects light incident on the inside of the optical receptacle 130, and the distortion (deformation) of the reflecting surface 132 may affect the traveling direction of the light in the optical receptacle 130. is there.
  • the plurality (12) of the first optical surfaces 131 and the plurality (12) of the second optical surfaces 133 are arranged in a line at regular intervals. ing. Therefore, when the distortion of the reflecting surface 132 is large to some extent, there is a possibility that a part of the first optical surface 131 and the second optical surface 133 cannot be appropriately optically coupled. The influence of the distortion of the reflecting surface 132 becomes more prominent when the optical module 100 is used at a higher transmission speed. For this reason, it is extremely important to suppress the deformation of the reflecting surface 132 due to molding shrinkage and increase the accuracy of the reflecting surface 132.
  • the length (x) in the depth direction of the optical receptacle 130 according to the present embodiment is 2.5 mm
  • the length (y) in the long side direction is 6.5 mm
  • the height is high.
  • the length (z) in the vertical direction was set to 2.0 mm.
  • the length of each direction of the optical receptacle 130 ′ according to the comparative example 1 and the length of the optical receptacle 130 ′′ according to the comparative example 2 is also the same as the length of each direction of the optical receptacle 130.
  • FIGS. 5 and 6 are diagrams showing the configuration of the optical receptacle 130 'according to the first comparative example.
  • 5A is a perspective view of the optical receptacle 130 ′ according to Comparative Example 1 as viewed from the upper side (top surface side)
  • FIG. 5B is a perspective view of the optical receptacle 130 ′ as viewed from the lower side (bottom surface side).
  • 6A is a plan view of an optical receptacle 130 ′ according to Comparative Example 1
  • FIG. 6B is a bottom view
  • FIG. 6C is a front view
  • FIG. 6D is a rear view
  • FIG. It is a right view.
  • both ends of the groove 137 ′ do not communicate with the outside in the length direction (long side direction of the optical receptacle 130 ′).
  • FIG. 7 and 8 are diagrams showing a configuration of an optical receptacle 130 ′′ according to Comparative Example 2.
  • FIG. 7A is a perspective view of the optical receptacle 130 ′′ according to Comparative Example 2 as viewed from the upper side (top surface side).
  • FIG. 7B is a perspective view seen from the lower side (bottom side).
  • 8A is a plan view of an optical receptacle 130 ′′ according to Comparative Example 2
  • FIG. 8B is a bottom view
  • FIG. 8C is a front view
  • FIG. 8D is a rear view
  • FIG. 7 and 8 the optical receptacle 130 ′′ according to the comparative example 2 does not have the wall part 134.
  • FIG. 9 and 10 are diagrams for explaining distortion of the reflecting surface 132 due to molding shrinkage of the three types of optical receptacles 130, 130 ′, and 130 ′′.
  • the depth direction of the optical receptacles 130, 130 ′, and 130 ′′ is also referred to as an x-axis direction
  • the long side direction is also referred to as a y-axis direction
  • the height direction is also referred to as a z-axis direction.
  • 9 is a graph (simulation result) showing the amount of displacement of the reflecting surface 132 of the optical receptacles 130, 130 ′, 130 ′′.
  • the position number of the first optical surface 131 and the first optical surface 131 are shown.
  • 9A shows the relationship between the optical axis of light passing through and the amount of displacement of the reflecting surface 132 at the intersection of the reflecting surface 132.
  • Fig. 9A shows the amount of displacement hz of the reflecting surface 132 in the z-axis direction.
  • FIGS.9A and 9B show the displacement amount hx of the reflecting surface 132 in the x-axis direction
  • the horizontal axis is a number assigned from the left when viewed from the front in the arrangement direction of the first optical surfaces 131.
  • the position number of the first optical surface 131 is shown.
  • the vertical axis represents the position of the reflecting surface 132 at the point corresponding to the first optical surface 131 of No. 1 as a reference.
  • Reflection surface of corresponding point 9A and 9B the results for the optical receptacle 130 'according to the comparative example 1 are indicated by black circles ( ⁇ ), and the optical receptacle 130 "according to the comparative example 2 is shown.
  • the results for the optical receptacle 130 are indicated by black triangles ( ⁇ ), and the results for the optical receptacle 130 according to the present embodiment are indicated by black squares ( ⁇ ).
  • FIG. 10A is a cross-sectional view taken along the line AA in FIG. 6A and shows the stress applied to the optical receptacle 130 ′ according to Comparative Example 1 during molding shrinkage.
  • 10B is a cross-sectional view taken along the line BB in FIG. 8A, and shows the stress applied to the optical receptacle 130 ′′ according to Comparative Example 2 during molding shrinkage.
  • FIG. 10C is a cross-sectional view taken along the line CC in FIG.
  • FIG. 10 is a cross-sectional view showing the stress applied to the optical receptacle 130 according to the present embodiment at the time of molding shrinkage.
  • the optical receptacle is shown to show the stress applied to the optical receptacles 130, 130 ′, 130 ′′.
  • the cross sections 130, 130 ′, and 130 ′′ are not hatched.
  • the optical receptacle 130 ′ according to Comparative Example 1 will be described. As shown by the black circles in FIG. 9, it was found that the reflecting surface 132 is distorted outward in the z-axis direction and the x-axis direction. As shown in FIG. 10A, a stress that is pulled outward by molding shrinkage acts on the outer portion of the groove 137 'of the optical receptacle 130' (see the thin solid arrow in FIG. 10A). In addition, a greater stress acts inward on the bottom side of the reflecting surface 132 of the optical receptacle 130 '(see the thick solid arrow in FIG. 10A).
  • the stress toward the inside is smaller than the stress in the optical receptacle 130 ′ according to the comparative example 1.
  • a small stress that pulls outward acts on the bottom side and the front side of the reflecting surface 132 (see the thin broken arrow in FIG. 10B), while the optical receptacle 130 ′′ according to the comparative example 2 is compared.
  • the stress corresponding to the stress acting on the outer portion of the groove 137 ′ in the optical receptacle 130 ′ according to Example 1 does not work.
  • the above-described two types of stress are simultaneously applied to the optical receptacle 130 ′′ at the time of molding shrinkage.
  • the reflective surface 132 is stressed so as to be distorted inward as a whole and is greatly distorted. .
  • both ends of the groove 137 communicate with the outside in the long side direction, and have a wall portion 134. Since both ends of the groove 137 communicate with the outside in the length direction, in the optical receptacle 130 according to the present embodiment, the optical receptacle 130 ′ according to the comparative example 1 works on a portion outside the groove 137 ′. Stress corresponding to stress does not work.
  • the optical receptacle 130 according to the present embodiment a small stress that pulls outward also acts on the bottom side and the front side of the reflecting surface 132 (see the thin broken arrow in FIG. 10C).
  • the optical receptacle 130 according to the present embodiment is thicker than the optical receptacle 130 ′′ according to the comparative example 2 by having the wall portion 134. Therefore, the bottom surface of the optical receptacle 130 is lower than the reflecting surface 132.
  • a larger inward stress is applied to the side portion than the inward stress in the optical receptacle 130 ′′ according to Comparative Example 2 (see the thick solid arrow in FIG. 10C). Further, this stress works slightly in the direction in which the wall portion 134 exists (x direction).
  • the maximum displacement amount hz of the reflecting surface 132 in the z-axis direction is reduced by 50% compared to the optical receptacle 130 ′ according to Comparative Example 1. . Further, the maximum displacement amount hx of the reflecting surface 132 in the x-axis direction was reduced by 35%. As a result, the maximum displacement amount of the reflecting surface 132 in the normal direction of the reflecting surface 132 is reduced by 40%. From this, it has been found that the fact that both ends of the groove 137 communicate with the outside in the length direction contributes to suppressing the outward deformation of the reflecting surface 132.
  • the portion corresponding to the groove 137 of the optical receptacle 130 ′′ according to the present embodiment also communicates with the outside in the y-axis direction.
  • the comparative example 2 The reflecting surface 132 of the optical receptacle 130 ′′ according to the above was greatly deformed inward due to stress due to molding shrinkage. From the comparison between the optical receptacle 130 according to the present embodiment and the optical receptacle 130 ′′ according to the comparative example 2, it is found that the wall portion 134 contributes to suppressing the inward deformation of the reflecting surface 132. It was.
  • the optical receptacle 130 according to the present embodiment has a wall portion 134 disposed so as to face the reflecting surface 132 with the groove 137 interposed therebetween.
  • both ends of the groove 137 communicate with the outside in the length direction. For this reason, even when the optical receptacle 130 is manufactured by injection molding, deformation (distortion) of the reflecting surface 132 due to molding shrinkage can be suppressed. Therefore, the optical module 100 according to the present embodiment is less likely to cause deformation of the reflecting surface 132 due to molding shrinkage even when manufactured by injection molding, and the photoelectric conversion element 120 and the optical transmission body 140 are used even at a high transmission speed. Can be optically coupled appropriately.
  • the first optical surface 131 and the second optical surface 133 are convex lens surfaces.
  • the first optical surface 131 and the second optical surface 133 are flat surfaces. May be.
  • only the first optical surface 131 may be a flat surface, or only the second optical surface 133 may be a flat surface.
  • the first optical surface 131 is formed as a flat surface, for example, the reflecting surface 132 is formed so as to function as a concave mirror.
  • the second optical surface 133 may be formed in a flat surface.
  • the reference position of the first optical surface 131 is not particularly limited.
  • the optical module according to the present invention can also be used in an optical module for transmission and reception.
  • the optical module includes a light emitting element and a light receiving element as a plurality of photoelectric conversion elements.
  • optical receptacle and the optical module according to the present invention are useful for optical communication using an optical transmission body.
  • optical coupling element 11 first lens surface (incident surface) 12 Total reflection surface 13 Second lens surface (outgoing surface) DESCRIPTION OF SYMBOLS 14 Positioning convex part 15 Positioning concave part 100 Optical module 110 Board

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Light Receiving Elements (AREA)
  • Semiconductor Lasers (AREA)

Abstract

La présente invention concerne un réceptacle optique (130) qui a : une ou plusieurs premières surfaces optiques (131) qui permettent à la lumière fournie en sortie par un élément de conversion photoélectrique d'entrer ou à partir desquelles la lumière fournie en sortie par une surface d'extrémité d'un corps de transmission de lumière (140) et passant par l'intérieur est fournie en sortie vers l'élément de conversion photoélectrique ; une ou plusieurs secondes surfaces optiques (133) à partir desquelles la lumière qui est incidente à la première surface optique (131) et qui passe par l'intérieur est fournie en sortie vers la surface d'extrémité du corps de transmission de lumière (140) ou qui permettent à la lumière fournie en sortie par la surface d'extrémité du corps de transmission de lumière (140) d'entrer ; une surface réfléchissante (132) où la lumière incidente au niveau de la première surface optique (131) est réfléchie vers la seconde surface optique (133) ou la lumière incidente au niveau de la seconde surface optique (133) est réfléchie vers la première surface optique (131) ; et une partie de paroi (134) disposée de manière à faire face à la surface réfléchissante (132), un canal (137) étant disposé entre celles-ci. Le canal (137) est relié à l'extérieur sur les deux extrémités dans le sens de sa longueur.
PCT/JP2015/073012 2014-08-27 2015-08-17 Réceptacle optique et module d'éclairage Ceased WO2016031603A1 (fr)

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JP2014172549A JP6494216B2 (ja) 2014-08-27 2014-08-27 光レセプタクルおよび光モジュール

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WO2017154540A1 (fr) * 2016-03-07 2017-09-14 株式会社エンプラス Réceptacle optique et module optique
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