Abstract: The present disclosure relates to an optical connector and an active optical cable using the same. The optical connector includes an optical boundary surface on which light emitted from an optical fiber is incident; a reflector changing the direction of traveling of light incident through the optical boundary surface; and a lens emitting light reflected through the reflector outside. The reflector has a cylindrical shape and converts light incident on the reflector into light traveling parallel to a first direction, and the lens has a cylindrical shape and converts light incident on the lens into light traveling parallel to a second direction which is perpendicular to the first direction.

Abstract: The present disclosure relates to an optical transceiver module and an active optical cable using the same. The optical transceiver module comprises a lower housing part, a first cassette part seated on the lower housing part and including a first optical connector, a divider insert seated on the first cassette part and coupled to a lower housing part, a second cassette part seated on the divider insert and including a second optical connector, and a upper housing part seated on the second cassette part and coupled to the lower housing part. The divider insert is combined with the lower housing part to form a first insertion hole into which the first optical cable module can be inserted, and the divider insert is combined with the upper housing part to form a second insertion hole into which the second optical cable module can be inserted.

Abstract: Embodiments of the present disclosure are directed to an optical assembly for optical transceiver which is composed of two separate sub-assemblies including an assembly that is coupled with a substrate and has a post formed to have a central hollow into a multi-branched shape, for increasing the optical alignment efficiency between the optical elements included in the optical assembly for optical transceiver which involves multiple complicated and sophisticated processes, the optical assembly for optical transceiver being structured to drain out the epoxy resin or the refractive index matching material used when coupling the optical fiber inserted from the outside with the optical elements, whereby greatly reducing optical alignment errors caused by the epoxy resin or refractive index matching material, as well as directed to an optical transceiver using the optical assembly for optical transceiver.

Abstract: An optical fiber connection apparatus is disclosed, including a first housing having first receptacle portion receiving and fixating first optical fiber bundle connecting to first optical module on the outside, and a first lens member changing shape or direction of optical signal received from the first optical module and transmitting changed optical signal to the outside or changing shape or direction of optical signal received from the outside and thereby transmitting changed optical signal to the first optical module, and further including a second housing having second receptacle portion receiving and fixating a second optical fiber bundle connecting to a second optical module on the outside, and a second lens member changing shape or direction of optical signal received from the second optical module and thereby transmitting changed optical signal or changing shape or direction of optical signal received from the outside and thereby transmitting changed optical signal to the second optical module.

Abstract: An active optical cable is disclosed. According to the present disclosure, there is provided an active optical cable, characterized by: having no complicated structure by obviating the need for a separate monitoring photodetector as was used for a typical optical transceiver, increasing light output-current linearity to improve optical coupling efficiency, generating a library of transmission/reception-related electro-optical characteristics of both optical modules so as to enable light outputted from a light source included in an optical transmitter to maintain high linearity over a wide range of temperatures, thereby reducing power consumption, and being applicable to a multi-level PAM technique involving at least four (4) levels.

Abstract: Embodiments of the present disclosure provide an optical assembly for high speed optical communications by combining a cover assembly including a lens and a cover post with a body assembly including a lens, reflection prism and body hole, which takes only a few passive optical alignments for providing aligned optical elements that have required multiple complex and sophisticated processes.

Abstract: Embodiments according to the present disclosure relate to an optical transmitting device and an optical receiving device which can minimize the alignment error between the light source and the photodetector on the substrate, miniaturize the devices, and require no separate guide member reducing manufacturing costs, while satisfying the design requirements for sub-miniaturization, and performing optical transmission and reception more efficiently.

Abstract: Embodiments according to the present disclosure relate to an optical transmitting device and an optical receiving device which can minimize the alignment error between the light source and the photodetector on the substrate, miniaturize the devices, and require no separate guide member reducing manufacturing costs, while satisfying the design requirements for sub-miniaturization, and performing optical transmission and reception more efficiently.

Abstract: An optical transceiver device includes a baseplate including a set position for mounting an optical element, an alignment plate including a mounting unit, a first and a second reference hole. The device includes an optical-fiber fixing block configured to fixedly mount at least one of a lens unit and an optical fiber optically linked with the optical element and to include a first and a second post, and a housing for enclosing the optical-fiber fixing block and alignment plate. The second post is inserted into the second reference hole in a looser manner than inserting the first post into the first reference hole, and the set position is determined by a first baseline passing through the first and the second reference hole and by a second baseline intersecting with the first baseline and positioned on opposite side of the second reference hole with respect to the first reference hole.

Abstract: An optical transceiver device includes a baseplate including a set position for mounting an optical element, an alignment plate including a mounting unit, a first and a second reference hole. The device includes an optical-fiber fixing block configured to fixedly mount at least one of a lens unit and an optical fiber optically linked with the optical element and to include a first and a second post, and a housing for enclosing the optical-fiber fixing block and alignment plate. The second post is inserted into the second reference hole in a looser manner than inserting the first post into the first reference hole, and the set position is determined by a first baseline passing through the first and the second reference hole and by a second baseline intersecting with the first baseline and positioned on opposite side of the second reference hole with respect to the first reference hole.

Abstract: A structure for aligning an optical element includes a baseplate including a set position for mounting at least one optical element, a first reference hole, and a second reference hole spaced by a first distance from the first reference hole. The set position is determined by a first baseline that passes the first reference hole and the second reference hole and a second baseline that intersects with the first baseline at a second distance from the first reference hole on an opposite side to the second reference hole with respect to the first reference hole. The second distance is shorter than the first distance.

Abstract: The present disclosure provides an AC-direct-type LED-lighting device including compensation circuit for AC input compensation, including a compensation inductor and first compensation capacitor parallelly connected to one terminal of AC input and a second compensation capacitor connected in series; rectifying unit for rectifying output from second compensation capacitor terminals to obtain direct current; and LED array driven by the rectifying unit output, wherein capacities of the first and second compensation capacitors and the compensation inductor and LED array output voltage are determined to cause 0.9 or larger cosine value of a phase, with respect to the AC input voltage, of resulting current obtained by dividing AC input voltage by sum of (i) parallel value of an equivalent impedance Re of the rectifying unit and LED array and an impedance of the second compensation capacitor and (ii) parallel value of impedances of the compensation inductor and first compensation capacitor.

Abstract: The present disclosure provides an AC-direct-type LED-lighting device including compensation circuit for AC input compensation, including a compensation inductor and first compensation capacitor parallelly connected to one terminal of AC input and a second compensation capacitor connected in series; rectifying unit for rectifying output from second compensation capacitor terminals to obtain direct current; and LED array driven by the rectifying unit output, wherein capacities of the first and second compensation capacitors and the compensation inductor and LED array output voltage are determined to cause 0.9 or larger cosine value of a phase, with respect to the AC input voltage, of resulting current obtained by dividing AC input voltage by sum of (i) parallel value of an equivalent impedance Re of the rectifying unit and LED array and an impedance of the second compensation capacitor and (ii) parallel value of impedances of the compensation inductor and first compensation capacitor.