Abstract: A surface (3a?) having light of a light emitting element (10) inputted thereto and monitor light outputted therefrom is formed as a part of an optical plate (3), and an output surface (12) having coupling light outputted therefrom is formed as a part of an optical block (4), thereby simply and highly accurately forming the optical surfaces (3a?, 12). Then, the optical plate (3) and the optical block (4) are simply and highly accurately combined by being fitted together by means of fitting sections (21, 25).

Abstract: A lens array is provided with a prism adhered within a prism placement recessing section by an adhesive, wherein retention of air-bubbles in the adhesive on an optical path of light of each light-emitting element between the prism placement recessing section and the prism is prevented by a first air-bubble retention prevention recessing section and a second air-bubble retention prevention recessing section that communicate with the prism placement recessing section in a lens array direction, and flowing of the adhesive onto a total reflection surface is prevented by an adhesive flow prevention recessing edge section.

Abstract: An optical receptacle disposed between a photoelectric conversion device and an optical fiber includes a light separating section for separating incident light into monitor light and fiber coupled light, which section includes a segmented reflective surface and a segmented transmitting surface. The reflective surface for reflecting light as monitor light is disposed in a segmented manner with spaces in a segmentation direction. The transmitting surface is disposed in a segmented manner in areas where the reflective surface is not disposed, so as to transmit a portion of light other than the reflected light in a direction directly oppose to the direction of the reflected light and to advance the other portion of light towards the side of an end face of the optical fiber.

Abstract: A surface (3a?) having light of a light emitting element (10) inputted thereto and monitor light outputted therefrom is formed as a part of an optical plate (3), and an output surface (12) having coupling light outputted therefrom is formed as a part of an optical block (4), thereby simply and highly accurately forming the optical surfaces (3a?, 12). Then, the optical plate (3) and the optical block (4) are simply and highly accurately combined by being fitted together by means of fitting sections (21, 25).

Abstract: In an embodiment, an optical receptacle includes a first lens face that is disposed on a first surface 2a on a photoelectric conversion device 3 side in an optical receptacle main body so that a portion of light of the light of a light-emitting element 7 is incident thereon, a first reflective surface 14 that is disposed on a second surface 2b on the side opposite to the first surface 2a and reflects the light that has been incident on the first lens face 11, and a second reflective surface 16 that is disposed on the first surface 2a continuously with the first lens face 11 so that a remaining portion of light of the light of the light-emitting element 7 is incident thereon and reflects the incident remaining portion of light towards a light-receiving element 8 as monitor light are included.

Abstract: In an exemplary configuration, a lens array and a light module using the same include a first lens surface 11 and a second lens surface 12 formed into surface shapes such that by expanding the luminous flux diameter of light as the light travels from the first lens surface 11 toward the second lens surface 12, a light spot on the second lens surface 12 is larger in diameter than a light spot on the first lens surface 11, whereby the effects on optical performance by foreign objects and scratches on the lens surface can be mitigated, the criteria for the outward appearance of the lens surface can therefore be mitigated and the yield rate improved, and costs can be reduced.

Abstract: A lens array fabrication method for fabricating a lens array includes: receiving pins (16) of a film attaching instrument (jig) in second guide holes (10) of a film-containing base plate; bonding a placement area and an adhesion layer (F); removing the pins (16); causing a detachment between a first detachment film (C) and a pressure-sensitive adhesive optical film (D); separating three layers (D) to (F) from two layers (B) and (C); receiving the pins (16) in first guide holes (7) of a lens array main unit; fitting a film holding protrusion (15) in a depression part (6); bonding the film (D) to a bonding region (i); removing the pins (16); and causing a detachment between the film (D) and a second detachment film (E).

Abstract: The present invention relates to an optical receptacle that can generate monitor light and can be also produced by integral molding, and an optical module having the optical receptacle. The optical receptacle has a first optical face on which light emitted from a light emitting element is incident, reflection surfaces that reflect the light to a light receiving element, a light splitting section that splits the light into monitor light heading for the light receiving element and signal light heading for an end face of an optical fiber, and a second optical face that emits the signal light toward the end face of the optical fiber. The light splitting section has a divided transmission surface and a divided reflection surface. The divided reflection surface is an inclining surface with respect to an optical axis of the light reflected by the reflection surfaces.

Abstract: An optical receptacle disposed between a photoelectric conversion device and an optical fiber includes a light separating section for separating incident light into monitor light and fiber coupled light, which section includes a segmented reflective surface and a segmented transmitting surface. The reflective surface for reflecting light as monitor light is disposed in a segmented manner with spaces in a segmentation direction. The transmitting surface is disposed in a segmented manner in areas where the reflective surface is not disposed, so as to transmit a portion of light other than the reflected light in a direction directly oppose to the direction of the reflected light and to advance the other portion of light towards the side of an end face of the optical fiber.

Abstract: A lens array is provided with a prism adhered within a prism placement recessing section by an adhesive, wherein retention of air-bubbles in the adhesive on an optical path of light of each light-emitting element between the prism placement recessing section and the prism is prevented by a first air-bubble retention prevention recessing section and a second air-bubble retention prevention recessing section that communicate with the prism placement recessing section in a lens array direction, and flowing of the adhesive onto a total reflection surface is prevented by an adhesive flow prevention recessing edge section.

Abstract: Provided is a lens array that can reliably obtain monitor light and is easy to manufacture. In the provided lens array, light incident on a first lens surface (11) from light-emitting elements is split by a reflective/transmissive layer (17) between a first optical surface (14a) and a first prism surface (16a) and sent, respectively, towards a second lens surface (12) and a third lens surface (13). Monitor light included in the light sent towards the third lens surface (13) is sent by the third lens surface (13) towards a light-receiving element (8). The path of light incident on the first optical surface (14a) is collinear with the path of light outgoing from the second optical surface (14b).

Abstract: An optical receptacle is disposed between a photoelectric conversion device and an optical fiber, in which photoelectric conversion device a light-emitting element and a light-receiving element that receives monitor light for monitoring light emitted from the light-emitting element are mounted on substrate. Light of the light-emitting element that has been incident on a first surface is reflected by a first reflective surface, and then is separated by a light separating section into monitor light and light to be coupled with a fiber end. The monitor light is emitted from the first surface towards the light-receiving element side. The light to be coupled with the fiber end is emitted from a second surface towards the fiber end side. A traveling direction of the light reaching the second surface from the first reflective surface is maintained at a reflection direction of the first reflective surface.

Abstract: An optical receptacle includes a cylindrical optical fiber attaching section for attaching an end portion of an optical fiber, a cylindrical photoelectric conversion device attaching section for attaching a photoelectric conversion device having a light-receiving element, and a lens for optically coupling the end portion of the optical fiber and the light-receiving element. A face of the lens that faces the end portion of the optical fiber is formed into a planar face having a slope angle of 14 degrees to 16 degrees in relation to a virtual plane perpendicular to an optical axis of the lens.

Abstract: A lens array has structures in which light of each light-emitting element in plural rows that has been incident on first lens faces in plural rows on a first plate-shaped portion is totally reflected by a second prism surface. The light of each light-emitting element is then divided by a reflection/transmission layer on a third prism surface to a side of second lens faces in plural rows on a second plate-shaped portion and a side of third lens faces in plural rows on the first plate-shaped portion. The light of each light-emitting element transmitted to the second lens face side is emitted by the second lens faces towards a side of end faces of an optical transmission body, and monitor light of each light-emitting element reflected towards the third lens face side is emitted by the third lens faces towards a side of light-receiving elements.

Abstract: A complete reflection surface is formed in a notched section. A transmittance surface, a transmittance surface, and a complete reflection surface are formed in a recess section. The complete reflection surface completely reflects each laser beam emitted from first lenses. The transmittance surface and the transmittance surface transmit the incident laser beam. The complete reflection surface completely reflects each laser beam emitted from third lenses. A main body of a lens array optically couples optical fibers and photoelectric conversion elements (light-emitting elements and light-receiving elements) without an optical path of the laser light and an optical path of the laser light intersecting.

Abstract: A lens array satisfies a+b+d1+e+?L?W1 where: a: positional accuracy of first lens faces 11, b: positional accuracy of second lens faces 12, d1: positional accuracy of light-emitting elements 7, e: positional accuracy of optical fibers 5, ?L=?×?T×L (?: coefficient of linear expansion of lens array main body 4; ?T: temperature change in the lens array main body 4; and L: distance from a fixed position on a first surface 4a to a position of a lens face on the first surface 4a farthest from the fixed position), W1: a distance between attachment positions before and after movement, under a premise that a photovoltaic device 3 is moved from an attachment position at which optical coupling efficiency between the light-emitting elements 7 and fiber ends 5a indicates a maximum efficiency to an attachment position at which efficiency reduction equivalent to 2 dB is indicated.

Abstract: A lens array can have monitor light reliably and can be manufactured easily. With this lens array (2), a reflecting/transmission surface (15) of a first concave part (14) branches laser lights L having been emitted from light emitting elements (7) and having been incident on first lens surfaces (11), toward second lens surfaces (12) and third lens surfaces (13). Monitor lights M branched toward the third lens surfaces (13) are emitted from the third lens surfaces (13) toward first light receiving elements (8) passing through a refracting surface (19) of a second concave part (18). The lens array (2) is formed such that the optical axes on the first lens surfaces (11) and the optical axes on the third lens surfaces (13) are parallel, and the optical axes on the first lens surface (11) and the optical axes on the second lens surfaces (12) are parallel or vertical.

Abstract: Provided is a lens array that can reliably obtain monitor light and is easy to manufacture. In the provided lens array, light incident on a first lens surface (11) from light-emitting elements is split by a reflective/transmissive layer (17) between a first optical surface (14a) and a first prism surface (16a) and sent, respectively, towards a second lens surface (12) and a third lens surface (13). Monitor light included in the light sent towards the third lens surface (13) is sent by the third lens surface (13) towards a light-receiving element (8). The path of light incident on the first optical surface (14a) is collinear with the path of light outgoing from the second optical surface (14b).

Abstract: An optical module can reliably provide monitor light and can facilitate manufacturing by reducing the number of lens surfaces. Based on a surface shape of each first lens surface (14), the relationship in length between the optical path length of the second optical path and the optical path length of the first optical path after reflecting/transmission surface (17) and whether or not second lens surfaces are formed in second surface (4b) based on this relationship in length, the spot diameter of light of each light emitting element (7) to be coupled to the end surface of each optical fiber (3) is made narrower than a spot diameter of monitor light to be coupled to each light receiving element (8).

Abstract: A lens array apparatus and a manufacturing method thereof are provided in which in the lens array apparatus includes a predetermined angle of gradient in relation to a thickness direction for each of a plurality of lenses, an exiting direction of light emitted from each lens is at an angle of gradient allowing respective converging points of the light emitted from each lens to be positioned on a predetermined straight line that corresponds to each lens and is parallel with the thickness direction, under a plurality of different ambient temperatures.