Abstract: The present invention relates to the provision of a ferrule that can be connected even when the space for the connection is small. A ferrule of the present invention is configured to hold a plurality of optical transmission members and to be connected to another ferrule. The ferrule includes a first surface facing the end of the optical transmission members when the optical transmission members are held; and a plurality of second surfaces disposed opposite to the first surface in the ferrule. In the ferrule, the optical transmission members extend in the Z direction, and the ferrule is configured to be moved in a direction orthogonal to the Z direction to be connected to the other ferrule.

Abstract: An optical receptacle of the present invention includes: a first optical surface configured to allow light emitted from the photoelectric conversion element to enter the optical receptacle; a second optical surface configured to emit, toward the optical transmission member, the light having entered through the first optical surface; a positioning part configured to position an end face of the optical transmission member in such a way that the end face faces the second optical surface; and a region disposed at an optical surface in the optical receptacle. The region is configured in such a way that as a distance from an emission position of the light on the second optical surface to a center of the second optical surface increases, a distance from a position where the light intersects a central axis of the second optical surface to the second optical surface increases.

Abstract: An optical receptacle includes: a first optical surface configured to allow, to enter the optical receptacle, light emitted from the photoelectric conversion element package, or emit, toward the photoelectric conversion element package, light travelled inside the optical receptacle; a second optical surface configured to emit, toward the optical transmission member, the light travelled inside the optical receptacle, or allow, to enter the optical receptacle, light emitted from the optical transmission member; a cylindrical part configured to house at least a part of the photoelectric conversion element package such that the first optical surface and the photoelectric conversion element face each other; and a first groove part disposed at a periphery of the first optical surface.

Abstract: An optical receptacle includes a first optical surface, a second optical surface, and an annular first cylindrical part disposed to surround a second central axis of the second optical surface. The first cylindrical part includes a first inner surface with a circular shape in a cross section perpendicular to the second central axis, and a second inner surface disposed on a second optical surface side than the first inner surface and provided with a circular shape in the cross section perpendicular to the second central axis. A diameter of the first inner surface is greater than a diameter of the second inner surface, and a length of the second inner surface in a direction along the second central axis is 0.5 to 4.0 mm.

Abstract: An optical receptacle includes an optical receptacle main body and a cylindrical fixing member. The optical receptacle main body includes a first optical surface, a second optical surface, and an annular groove disposed to surround a first central axis of the first optical surface or disposed to surround a second central axis of the second optical surface. The fixing member is configured with a material with a smaller linear expansion coefficient than that of the optical receptacle main body, and is fit to the groove so as to be in contact with at least a part of an inner surface of the groove.

Abstract: An optical receptacle includes first to third optical surfaces. The attenuation part includes a plurality of reflecting surfaces that reflects a part of the light entered from the first optical surface and a plurality of transmission surfaces that transmits another part of the light entered from the first optical surface. The reflecting surfaces and the transmission surfaces are alternately disposed in a first direction along an intersection line of the third optical surface and a plane including first and second optical axes, the first optical axis being an optical axis of light transmitted through the attenuation part, the second optical axis being an optical axis of light reflected by the attenuation part. In the third optical surface, the attenuation part is shorter than an irradiation spot at the third optical surface of the light entered from the first optical surface, in at least one direction.

Abstract: This optical receptacle comprises: a first optical surface on which light emitted from a VCSEL is incident; a first reflection part which reflects, as monitor light traveling to a detection element; a light separation part which separates monitor light and signal light; a second optical surface which emits the signal light to the end surface of the optical transmission body; and a third optical surface which emits the monitor light reflected by the first reflection part and the monitor light separated by the light separation part to the detection element. Two second reflection parts of the light separation part are disposed so as to be located within a luminous flux of the light incident on the first optical surface such that a predetermined condition is satisfied.

Abstract: An optical receptacle includes first to third optical surfaces. The attenuation part includes a plurality of reflecting surfaces that reflects a part of the light entered from the first optical surface and a plurality of transmission surfaces that transmits another part of the light entered from the first optical surface. The reflecting surfaces and the transmission surfaces are alternately disposed in a first direction along an intersection tine of the third optical surface and a plane including first and second optical axes, the first optical axis being an optical axis of light transmitted through the attenuation part, the second optical axis being an optical axis of light reflected by the attenuation part. In the third optical surface, the attenuation part is shorter than an irradiation spot at the third optical surface of the light entered from the first optical surface, in at least one direction.

Abstract: An optical receptacle includes a first optical surface, a second optical surface, and an attenuation portion. The attenuation portion includes a plurality of first reflection parts and a plurality of second reflection parts. The plurality of first reflection parts reflects a portion of light incident on the first optical surface toward the second optical surface. The second reflection parts reflect the other portion of light incident on the first optical surface in directions other than the direction toward the second optical surface. The first reflection parts and the second reflection parts are alternately disposed along a direction perpendicular to the optical axis between the first optical surface and the first reflection parts and perpendicular to the optical axis between the first reflection parts and the second optical surface.

Abstract: The optical module according to the present invention includes a photoelectric converter and an optical receptacle. The optical receptacle includes a first optical surface, a second optical surface, a transmission and reflection part, a recess, and a third optical surface. The transmission and reflection part is secured to the inner surface of the recess at a position that does not coincide with the optical path of signal light. The transmission and reflection part transmits the signal light incident on the first optical surface toward the second optical surface. The transmission and reflection part reflects the received light incident on the second optical surface toward the third optical surface. When viewed along a direction normal to a substrate, the optical path in the recess is inclined relative to the optical path between the second optical surface and the recess.

Abstract: Provided is an optical receptacle capable of maintaining high optical coupling efficiency even when an optical transmission body having a large core end surface is used. An optical receptacle according to the present invention has: an optical receptacle body; and a filter. The optical receptacle body includes a first optical surface; a second optical surface; a third optical surface; and a reflection surface. The filter includes a first filter surface for reflecting light of a first wavelength while transmitting light of a second wavelength, and a second filter surface for reflecting the light of the second wavelength while transmitting the light of the first wavelength. The filter is disposed on the optical receptacle body so that the first filter surface or the second filter surface is closely attached to the reflection surface.

Abstract: A light isolator member of an embodiment of the present invention is configured to be joined to another light isolator member to serve as a part of a light isolator, the light isolator member including: a lens surface disposed in a first surface; a transmission surface disposed at a position corresponding to the lens surface in a second surface on a side opposite to the first surface; and a fitting part disposed in the second surface, the fitting part being configured for fitting to the other light isolator member.

Abstract: This optical receptacle comprises: a first optical surface on which light emitted from a VCSEL is incident; a first reflection part which reflects, as monitor light traveling to a detection element; a light separation part which separates monitor light and signal light; a second optical surface which emits the signal light to the end surface of the optical transmission body; and a third optical surface which emits the monitor light reflected by the first reflection part and the monitor light separated by the light separation part to the detection element. Two second reflection parts of the light separation part are disposed so as to be located within a luminous flux of the light incident on the first optical surface such that a predetermined condition is satisfied.

Abstract: This optical receptacle includes: first, second, and third optical surfaces disposed on a first surface that faces a photoelectric conversion device; fourth and fifth optical surfaces that are disposed on a second surface that faces an optical transmission body; a first reflection surface that is disposed on an optical path between the first optical surface and the fifth optical surface; a second reflection surface that is disposed on an optical path between the second optical surface and the fourth optical surface; and an inclined surface that is disposed between the first reflection surface and the fifth optical surface on an optical path between the first optical surface and the fifth optical surface. The inclined surface functions as a transmissive surface when covered by a light-transmissive material, and functions as a reflective surface when not covered by a light-transmissive material.

Abstract: The optical module according to the present invention includes a photoelectric converter and an optical receptacle. The optical receptacle includes a first optical surface, a second optical surface, a transmission and reflection part, a recess, and a third optical surface. The transmission and reflection part is secured to the inner surface of the recess at a position that does not coincide with the optical path of signal light. The transmission and reflection part transmits the signal light incident on the first optical surface toward the second optical surface. The transmission and reflection part reflects the received light incident on the second optical surface toward the third optical surface. When viewed along a direction normal to a substrate, the optical path in the recess is inclined relative to the optical path between the second optical surface and the recess.

Abstract: An optical receptacle includes an optical receptacle main body and a filter. The optical receptacle main body includes a first optical surface, a second optical surface, a third optical surface, and a reflecting surface. The filter includes a first filter that reflects light of a first wavelength and allows light of a second wavelength to pass therethrough, and a second filter that reflects the light of the second wavelength and allows the light of the first wavelength to pass therethrough. The filter is disposed on the optical receptacle main body such that the first filter or the second filter makes intimate contact with the reflecting surface. A second central axis of the second optical surface do not coincide with a light axis of a light-receiving element. A third central axis of the third optical surface do not coincide with a light axis of a light-emitting element.

Abstract: An optical receptacle includes a first incidence surface, a first emission surface, and a reflection transmission part. The reflection transmission part includes an individual reflection surface, an individual transmission surface, and an individual connection surface. 0°<?a<37°, 70°<?b?90° and ?a+?b?100° are satisfied where ?a represents an angle between the individual transmission surface and an installation surface of the optical receptacle to a substrate and ?b represents an angle between the individual connection surface and the installation surface.

Abstract: An optical receptacle has: a first optical surface, a first transmission part, a light separation part, a second optical surface and a third optical surface. The light separation part has a reflection part and a second transmission part. The first transmission part and two or more of a plurality of second transmission parts are present within an optical effectiveness region, where the optical effectiveness region is a region from a central axis to the radius of the larger of the first optical surface and the second optical surface, and the central axis is the optical axis of the light that impinges on the first optical surface and is emitted at the second optical surface.

Abstract: An optical receptacle capable of demultiplexing an optical signals to be transmitted and received without needing to place an optical functional member on an inclined surface and without needing to use an index-matching material is provided. The optical receptacle comprises: an optical splitter that allows transmitted light entering the optical receptacle from a light-emitting element to proceed to the emission surface toward an optical transmitter, and allows received light entering therein from the optical transmitter to proceed to the emission surface toward a light receiving element; and a light attenuation member for attenuating the received light reaching the light-emitting element from the optical splitter. The optical splitter is formed as an optical surface that includes a fourth optical surface and a fifth optical surface inclined relative to the fourth optical surface.

Abstract: An optical receptacle comprises: a first optical surface; a first transmission part; a light separation unit; and a third optical surface. The light separation unit includes a reflective part and a second transmission part. Given that the optical axis of light which is incident on the first optical surface and exits the second optical surface is defined as a center axis and that an area that has an outer peripheral surface the same distance away from the center axis as the radius of the first optical surface or the second optical surface, whichever is greater, is defined as an optical effective area, the first transmission part and the second transmission part are located within the optical effective area.