Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.

Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.

Abstract: A plug attached to a terminal part of a cable includes a plug main body engaged to an adaptor, a slider and a tool. The tool includes an insertion portion having a tapered part and an engaging projection and an operation part. When the operation part is pulled with a second surface of the insertion portion inserted in a slot being disposed in parallel with an extraction direction, the engaging projection is engaged with an engaging portion of the slider, the slider is moved integrally with the tool and the plug main body is pulled out from the adaptor. When the operation part is pulled with an inclined surface of the tapered part being disposed in parallel with the extraction direction, the engaging projection is released from an engaging state with the engaging portion and the tool is detached from the slider.

Abstract: A plug attached to a terminal part of a cable includes a plug main body to be connected to an adaptor, a latch, which is provided at the plug main body so as to be elastically displaceable from an outside of the plug main body toward an outer surface of the plug main body and which is engaged to the adaptor, and a slider including a cover part that is disposed at the outside of the latch. When the cover part is pushed down toward the outer surface or when the slider is moved in an extraction direction in which the plug main body is to be extracted from the adaptor, the latch is pushed down toward the outer surface and the engaging state of the latch is released.

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: An imaging module includes: an object lens; an image-sensing device having side surfaces and a corner of the side surfaces, the corner protruding in a direction perpendicular to an optical axis; and a holder that holds the object lens and the image-sensing device, the holder having a slit that penetrates from an inner face side to an outer face side of the holder, wherein the corner of the image-sensing device is disposed at the slit.

Abstract: The present invention provides an optical fiber connector cleaner in which the rotation of the cleaning shaft is linked with the feeding of the cleaning tape so that it is possible to wipe the dirt on the end surface of the connector off reliably. A forwarding and reversing mechanism of the optical fiber connector cleaner is formed of a fixing member contacting the second casing so as to be slidable, and a coil spring biasing the second casing forward in the one direction for the fixing member, a rotation mechanism is formed of a first rack gear disposed on the fixing member, a first gear rotatably mounted in the second casing, and a second gear connected to a base end of the shaft 14, the first gear includes first teeth fitted to the first rack gear, and second teeth fitted to the second gear.

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.

Abstract: An optical connector assembly and an optical connector adapter with a shutter each provide better heat radiation performance by blocking light outputted from a first optical fiber held by a first optical connector plug with a shutter thereby controlling temperature of an adapter body of the optical connector adapter not to exceed a prescribed level even when light having optical high power is outputted from the first optical fiber for about 15 minutes. An countermeasure against the light having optical high power is provided in a side wall of one of first and second receiving holes to be irradiated with the light outputted from the first optical fiber toward the second receiving hole and reflected thereafter by the shutter plate disposed in one of the first and second receiving holes.

Abstract: In the optical connector plug, a length from the end face of the capillary of the ferrule to the front end surface of the flange in the axial direction is larger than a length from the front end of the forward portion of the first accommodation space of the plug frame to the rear end surface of the rearward portion of the plug frame in the axial direction, and in a state in which the front end surface of the flange is in contact with the rear end surface of the plug frame, the end face of the capillary is located in the second accommodation space.

Abstract: [Problem] To propose a hybrid lens unit comprising a hybrid lens and a guide component which can be manufactured with a low cost and a method thereof. [Means for Solving the Problems] A method of manufacturing a hybrid lens unit includes the following steps of; (a) preparing a guide component having a through hole, and a plane parallel glass plate formed of optical glass; (b) fixing the plane parallel glass plate to at least one of surface of the guide component so that the plane parallel glass plate is accommodated in the guide component; and then (c) forming a resin lens on at least one of surfaces of the plane parallel glass plate by applying and curing energy-curable resin.

Abstract: In an optical connector plug, a front end of the shutter member can move between a shield position to shield a front end face of a ferrule in an extension state and a non-shield position to expose the front end face of the ferrule to the front side of a housing in a reduction state, when a plug frame and a shutter holding member move between the extension state and the reduction state. In the optical connector plug, in a course in which the shutter holding member is engaged with holding portions protruding in an axial direction of the optical connector adaptor and a grip member moves from the extension state to the reduction state, the front end of the shutter member is spaced to face front ends of the holding portions in the axial direction.

Abstract: A shutter member of the optical communication adapter includes a base plate, both side plates, a connecting plate, and an elastically deformable shutter plate having a predetermined curvature radius. In the adapter, the base plate of the shutter member is fitted into a bottom recess formed on an external surface of a bottom wall and the both side plates of the shutter member are fitted into both side recesses formed on the external surface of both sidewalls. The shutter plate of the shutter member is positioned at both open ends of an insertion hole to shield the insertion hole while being curved to form a convex shape toward a center portion of the insertion hole and, when a connector is inserted into the insertion hole, falls toward the center portion of the insertion hole by being pressed by the connector.

Abstract: The present invention discloses code plate of an optical encoder having a planar portion that is located on a surface to which a light flux for detection is applied; and a non-planar portion that is arranged alternatively with the planar portion on the surface and is comprised of multiple convex structures and concave structures arranged continuously intersecting to a parallel direction of arranging the planar portion and the non-planar portion. The longitudinal direction in the planar portion and the non-planar portion is consistent with the radial direction of the code plate, and a direction (Parallel direction) in which the planar portion and the non-planar portion are arranged alternately is consistent with the circumferential direction of the code plate. The non-planar portion which forms the concave and convex structure is formed by arranging multiple V-shaped structures in the longitudinal direction of the non-planar portion.

Abstract: Provided are a non-reciprocal unit used for a polarization dependent type optical isolator and a polarization dependent type optical isolator that are simple in structure, can prevent damages due to light and heat and can obtain a high extinction ratio. In a polarization dependent type optical isolator, an input side lens (first lens) (5), a first birefringence unit (7), a Faraday rotator (9), a second birefringence unit (11) and an output side lens (second lens) (15) are arranged from the input side to the output side. The polarization dependent type optical isolator (1) is connected with optical fibers (3, 17) on the input and output sides, respectively, wherein a wedge angle (?1) of the first birefringence unit (7) is different from a wedge angle (?2) of the second birefringence unit (11).

Abstract: A junction type compound lens using glass and resin is used. By properly controlling the difference between refractive indices and the difference between Abbe numbers of the resin and glass, interface reflection that occurs when a ray with a large incidence angle is incident is restricted, and generation of a flare or a ghost image is restricted. Further, by properly controlling the difference in refractive index and the difference in Abbe number, various aberrations, such as spherical aberration, field curvature, and chromatic aberration, which may deteriorate optical performance, can be corrected. Thus, a small and high-performance imaging lens can be provided.

Abstract: The present invention provides an optical fiber connector cleaner in which the rotation of the cleaning shaft is linked with the feeding of the cleaning tape so that it is possible to wipe the dirt on the end surface of the connector off reliably. A forwarding and reversing mechanism of the optical fiber connector cleaner is formed of a fixing member contacting the second casing so as to be slidable, and a coil spring biasing the second casing forward in the one direction for the fixing member, a rotation mechanism is formed of a first rack gear disposed on the fixing member, a first gear rotatably mounted in the second casing, and a second gear connected to a base end of the shaft 14, the first gear includes first teeth fitted to the first rack gear, and second teeth fitted to the second gear.

Abstract: A shutter member of the optical communication adapter includes a base plate, both side plates, a connecting plate, and an elastically deformable shutter plate having a predetermined curvature radius. In the adapter, the base plate of the shutter member is fitted into a bottom recess formed on an external surface of a bottom wall and the both side plates of the shutter member are fitted into both side recesses formed on the external surface of both sidewalls. The shutter plate of the shutter member is positioned at both open ends of an insertion hole to shield the insertion hole while being curved to form a convex shape toward a center portion of the insertion hole and, when a connector is inserted into the insertion hole, falls toward the center portion of the insertion hole by being pressed by the connector.

Abstract: To propose a hybrid lens, which does not depend on a shape and thickness of glass, which has an excellent dimensional precision, and which can be manufactured with a low cost and a method thereof. A method of manufacturing a hybrid lens includes the following steps of (a) preparing a guide component having a through hole, and a plane parallel glass plate formed of optical glass; (b) fixing the plane parallel glass plate to at least one of surface of the guide component so that the plane parallel glass plate is accommodated in the guide component; and then (c) forming a resin lens on at least one of surfaces of the plane parallel glass plate by applying and curing energy-curable resin.

Abstract: A shutter member of the optical communication adapter includes a base plate, both side plates, a connecting plate, and an elastically deformable shutter plate having a predetermined curvature radius. In the adapter, the base plate of the shutter member is fitted into a bottom recess formed on an external surface of a bottom wall and the both side plates of the shutter member are fitted into both side recesses formed on the external surface of both sidewalls. The shutter plate of the shutter member is positioned at both open ends of an insertion hole to shield the insertion hole while being curved to form a convex shape toward a center portion of the insertion hole and, when a connector is inserted into the insertion hole, falls toward the center portion of the insertion hole by being pressed by the connector.