Abstract: A tool for a plug, including a plug body fitted to an adapter and a slider supported on the plug body, includes an insertion portion and a handle. The insertion portion is configured to catch the slider. The handle extends in a direction opposite to the insertion portion. The handle includes a fragile part having a locally small cross-sectional area perpendicular to the direction in which the handle extends.

Abstract: An optical fiber ferrule polishing holder for suppressing difference of protruded lengths of optical fiber ferrules protruded from the optical fiber ferrule polishing holder and difference of angles of the optical fiber ferrules. Even when force is applied to cables connected to the optical fiber ferrules, polishing performance of connectors is less affected. An optical fiber ferrule polishing holder for holding an optical fiber ferrule incorporated in a connector, including: a holder body having a plate shape; and an adapter fixed to the holder body so that the connector is locked to the adapter, wherein the holder body includes an insertion hole into which the optical fiber ferrule is inserted, and an upper surface of the holder body presses the optical fiber ferrule at a peripheral position of the insertion hole to contract a spring built in the connector when the connector is locked to the adapter.

Abstract: An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion. The end face polishing device has: a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction; a pressing drive source for outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism for transmitting the driving force output from the pressing drive source as a pressing force in the axial movement direction of the polishing plate.

Abstract: A tool for a plug to which a cable having its basal end covered with a boot is attached is disclosed. The plug includes a plug body fitted to an adapter and a slider supported on the plug body. The tool includes an insertion portion that catches the slider, and a boot surrounding part that has a sleeve-like shape and accepts insertion of the cable and the boot, to accommodate the boot while the insertion portion is catching the slider. The boot surrounding part includes a slit extending along an entire length in an axial direction of the boot surrounding part and having a width greater than a diameter of the cable and smaller than a maximum diameter of the boot. While the insertion portion is catching the slider, the boot surrounding part is positioned inner than an outermost shape line of the plug as seen in the axial direction.

Abstract: In an optical fiber ferrule polishing holder 20 used for polishing an optical fiber ferrule 30 having a rectangular cross section, the optical fiber ferrule polishing holder 20 having: a body part 21 having an insertion hole 21A into which the optical fiber ferrule 30 can be inserted, the body part 21 being capable of abutting on the optical fiber ferrule 30 at a support wall 21A1 of the insertion hole 21A; and a fixing part 25 (29) having a pressing wall 25B (29B) for pressing the optical fiber ferrule 30 to the support wall 21A1 at a predetermined pressure, wherein the support wall 21A1 is inclined at a predetermined angle with respect to a vertical axis which is vertically extended from a polishing surface 13 of an optical fiber ferrule polishing machine 10, and the support wall 21A1 has a protrusion 21C toward the pressing wall 25B (29B).

Abstract: It is provided a lens unit to be small-sized, while reducing deterioration in optical performance after experiencing thermal expansion. The lens unit includes an aperture member, a lens, an image sensor, and a holder. A range where the aperture member abuts on a flange part of the lens overlaps with a range where the holder abuts on the flange part of the lens. A first gap is provided between a holder inclined surface of the holder and a lens inclined surface of the lens over the entire circumference. A second gap is provided between an outer circumferential surface of the lens and an inner surface of the holder over the entire circumference.

Abstract: The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device 1 for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate 5 driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion 9.

Abstract: A duplex optical connector plug includes: a first engagement latch being elastically deformable and including a first abutting projection configured to abut on a front end of a first top wall and a first engagement part formed on an axial rear side of the first abutting projection and configured to engage with an optical connector adaptor when the first optical connector assembly is inserted into the optical connector adaptor; and a second engagement latch being elastically deformable and including a second abutting projection configured to abut on a front end of a second top wall and a second engagement part formed on an axial rear side of the second abutting projection and configured to engage with the optical connector adaptor when the second optical connector assembly is inserted into the optical connector adaptor.

Abstract: An optical waveguide 1, an optical waveguide 2 are formed on a substrate 3 to be crossed with each other, modulator electrodes 11, 12, 13 and 14 are arranged along the optical waveguides 1, 2, and antennas 21, 22, 23, 24 (i.e., square patch antennas having an approximately same shape) are arranged around four corners of the square shape. The modulator electrode 11 is energized from the antenna 21 and the antenna 22, the modulator electrode 12 is energized from the antenna 24 and the antenna 23, the modulator electrode 13 is energized from the antenna 21 and the antenna 24, and the modulator electrode 14 is energized from the antenna 22 and the antenna 23. The light wave propagating through the optical waveguide 1 is modulated by an electric field of Y-direction, and the light wave propagating through the optical waveguide 2 is modulated by an electric field of X-direction.

Abstract: Provided is an optical fiber ferrule polishing jig capable of fixing an optical fiber ferrule and releasing the optical fiber ferrule. An optical fiber ferrule polishing jig 10A has; a base 12a having insertion holes 20 into which optical fiber ferrules 51 can be detachably inserted; pivoting rods 13 which are adjacent to the insertion holes 20 of the base 12a and rotatable around lower end portions 36; fixing pieces 14a installed in installation recesses 19a formed in the base 12a to fix the optical fiber ferrules 51 with respect to the insertion holes 20 by being moved as the rods are pivoted; and a plurality of coil springs 15a installed in the installation recesses 19a to bias the fixing pieces 14a so as to release fixing of the optical fiber ferrules 51 with respect to the insertion holes 20.

Abstract: A connector plug, having: a plug body that houses an optical fiber inside; a latch that is supported on an outer surface of the plug body to be capable of being engaged with the adapter; a slider that is supported on the plug body to be slidable with respect to the plug body; and a stopper that is detachably attachable between the plug body and the slider, wherein the slider is capable of elastically deforming the latch toward the outer surface of the plug body, when the slider is slid in a detaching direction which is a direction of drawing the connector plug out of the adapter, the slider elastically deforms the latch toward the outer surface of the plug body, and when the stopper is attached between the plug body and the slider, the stopper restricts the slider from elastically deforming the latch toward the outer surface of the plug body.

Abstract: A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.

Abstract: A resin molding is provided. The resin molding includes an optically transparent plate-shaped portion, which has a first surface having a smooth surface portion, and a second surface having plural sections, wherein each of the plural sections has a width and includes one or more convex portions which have one or more ridge lines extending in a ridge line direction. The ridge line direction of the one or more convex portions of at least one of the plural sections is different from the ridge line direction of the one or more convex portions of one or more of others of the plural sections. When the first surface of the resin molding is observed from outside, the resin molding has metallic appearance.

Abstract: The present invention provides an optical connector capable of fixing the tensile strength fibers of the optical cable to the optical connector while keeping the tensile strength sufficiently without sacrificing the easiness of assembling the optical connector. The optical connector The optical connector is configured to be attached to an optical cable having an optical fiber and tensile strength fibers extending along a longitudinal direction of the optical fiber, having: a connector body having a male screw; and a fixing member used for fixing the tensile strength fibers to the connector body, the fixing member having a female screw, wherein the tensile strength fibers are configured to be interposed between the male screw and the female screw and fixed to the connector body when the male screw formed on the connector body and the female screw formed on the fixing member are screwed with each other, and the male screw has a notch extending in a direction crossing a screw thread of the male screw.

Abstract: An imaging module includes: an object lens; an image-sensing device; a holder that holds the object lens and the image-sensing device, the holder having a butt-contact portion with which the object lens is able to be brought into contact from an object side; and an aperture stop arranged closer to the object than the butt-contact portion, wherein an area that is to be light-shielded by an outer-periphery of the aperture stop is larger than an internal diameter of the butt-contact portion.

Abstract: Provided is an optical connector plug which, even when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of a guide protrusion portion, prevents disengagement of an engagement head and an optical conductor adaptor. In an optical connector plug, an axial front end of an engagement head of an engagement latch is separated axially rearward from an axial rear end of a guide protrusion portion, and is close to the axial rear end of the guide protrusion portion. According to the optical connector plug, when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of the guide protrusion portion, the axial front end of the engagement head is supported by the axial direction rear of the guide protrusion portion, so that the engagement head is prevented from moving vertically downward from the guide protrusion portion.

Abstract: A resin molding is provided. The resin molding includes an optically transparent plate-shaped portion which consists essentially of a single material and which includes a first surface having a smooth surface portion, and a second surface having plural convex portions. Each of the plural convex portions includes a first inclined surface having a concavo-convex portion thereon; and a second inclined surface having a smooth surface portion. The concavo-convex portion allows at least part of light incident from the first surface to cause total reflection, diffraction and interference and to travel toward the smooth surface portion of the second inclined surface, and the smooth surface portion selectively reflects visible light in a predetermined wavelength range toward the first surface, so that when the first surface of the resin molding is observed from outside, the resin molding has a colored appearance with at least one color in addition to a metallic appearance.

Abstract: When a second housing 80 and a first housing 30 are approached to each other along an axial direction, a body portion 62 of a second fixing member 60 begins to enter in an opening 81 of the second housing 80. Since a vertical wall surface 81a and a cylindrical surface 81b are formed on the opening 81 to substantially match the outer shape of the rear end of the body portion 62, when the second housing 80 is inserted to the first housing 30 while keeping the relative angle until the second housing 80 abuts on a first fixing member 40 which closes the opening and rotating the second housing 80 with respect to the first housing 30 by 90°, a protrusion 64 faces and enters a recessed engagement portion 83 formed on the vertical wall surface 81a. Thus, the protrusion 64 and the recessed engagement portion 83 are fitted and fixed.

Abstract: A decorative plastic molded article has an outer appearance of metallic color like and a display of a character, a graph or a symbol. A body of the molded article has a plate-like portion; the plate-like portion has a first surface and a second surface; a small concave and convex portion is formed on the second surface; the small concave and convex portion has a plurality of inclined surfaces. The outer appearance of metallic color like is obtained by the total reflection light at the inclined surface and the display of a character, a graph or a symbol is obtained by the transmissive light through a planar transparent portion with shape of a character, a graph or a symbol formed in the small concave and convex portion or the total reflection light at the small concave and convex portion with shape of a character, a graph or a symbol.