Enplas Corporation

Shinya Kanke

Shimpei Morioka

Masahiro Tanazawa

Tadanobu Niimi

An optical coupling element of the invention includes: a plurality of incident surfaces having a predetermined curvature, where light emitted from a plurality of light-emitting elements is respectively incident; a reflective surface reflecting the light incident respectively on the incident surfaces and having a predetermined curvature; and a plurality of output surfaces respectively outputting the light reflected by the reflective surface toward an end face of an optical fiber and having a predetermined curvature. The curvatures for the incident surfaces, the reflective surface, and the output surfaces are adjusted such that the X-direction tolerance is greater than the Y-direction tolerance. Here, the alignment direction of the plurality of incident surfaces is the X direction, the advancement direction of the light is the Z direction, and the direction perpendicular to the X and Z directions is the Y direction.

Optical coupling element and optical module provided with same

An optical receptacle is capable of actualizing, at low cost, optical transmission accompanying monitoring in which light of a light-emitting element is extracted in a direction along a substrate at an optical transmission body. In an embodiment, light of a light-emitting elementthat has been incident on a first surface() is separated into coupling light and monitor light using total reflection at a coupling light total reflection surfaceand a first monitor light total reflection surface. The coupling light is emitted towards an optical transmission bodyfrom a third surface(), and the monitor light is emitted towards a light-receiving elementfrom the first surface().

Optical receptacle and optical module comprising same

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.

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Kawaguchi, Japan

Shinya Kanke