Abstract: A package for optical receiver module includes a conductive housing and a feedthrough. The conductive housing includes a first sidewall having an optical port for receiving an optical signal along an optical axis, a second sidewall separated from the first sidewall along the optical axis, and an interior space for housing a photodetector. The feedthrough includes first to third layers extending from the second sidewall to an opposite direction of the first sidewall, and the third layer is provided between the first and second layers. The feedthrough includes first to fourth wirings, a grounding wiring, and a plurality of first conductive cells. The first and second wirings face the interior space. The third wirings, the fourth wiring, the grounding wiring are formed in the first layer or the second layer. The plurality of first conductive cells are arranged in the third layer, and are electrically connected to the grounding wiring.

Abstract: A package for optical receiver module includes a conductive housing and a feedthrough. The conductive housing includes a first sidewall having an optical port for receiving an optical signal along an optical axis, a second sidewall separated from the first sidewall along the optical axis, and an interior space for housing a photodetector. The feedthrough includes first to third layers extending from the second sidewall to an opposite direction of the first sidewall, and the third layer is provided between the first and second layers. The feedthrough includes first to fourth wirings, a grounding wiring, and a plurality of first conductive cells. The first and second wirings face the interior space. The third wirings, the fourth wiring, the grounding wiring are formed in the first layer or the second layer. The plurality of first conductive cells are arranged in the third layer, and are electrically connected to the grounding wiring.

Abstract: An optical transceiver that reduces the EMI radiation leaked therefrom is disclosed. The optical transceiver includes a top cover and the bottom base to form a cavity into which a TOSA, a ROSA, and a circuit are set. The top cover provides a combed structure in a rear portion thereof, where the combed structure has a plurality of fins with a distance preferably less that quarter wavelength ?/4 of the noise wavelength to be reduced. The combed structure operates as a short stub for the electromagnetic wave traveling longitudinally in the cavity.

Abstract: An optical transceiver that attenuates the EMI radiation leaked therefrom is disclosed. The optical transceiver includes a top cover and the bottom base to form a cavity into which a TOSA, a ROSA, and a circuit are set. At least one of the top cover and the bottom base provides a combed structure in a rear portion of the optical transceiver, where the combed structure has a plurality of T-shaped fins to attenuate the EMI radiation.

Abstract: An optical transceiver with two circuit boards is disclosed. The optical transceiver includes two OSAs, two circuit boards, and a holder put between two circuit boards. The circuit boards are assembled with the holder made of resin by the snap-in, and this intermediate product is set within the housing of the transceiver. The cover of the transceiver is also assembled by the snap-in without using screws and so on.

Abstract: An optical transceiver that reduces the EMI radiation leaked therefrom is disclosed. The optical transceiver includes a top cover and the bottom base to form a cavity into which a TOSA, a ROSA, and a circuit are set. The top cover provides a combed structure in a rear portion thereof, where the combed structure has a plurality of fins with a distance preferably less that quarter wavelength ?/4 of the noise wavelength to be reduced. The combed structure operates as a short stub for the electromagnetic wave traveling longitudinally in the cavity.

Abstract: An optical transceiver with two circuit boards is disclosed. The optical transceiver includes two OSAs, two circuit boards, and a holder put between two circuit boards. The circuit boards are assembled with the holder made of resin by the snap-in, and this intermediate product is set within the housing of the transceiver. The cover of the transceiver is also assembled by the snap-in without using screws and so on.

Abstract: A backrest of a motorcycle is provided with a pair of angle-adjusting units. In each angle-adjusting unit, a metal arm of the backrest is pivotally connected, by a connecting shaft, to an inner side of each of a seat stay mounted along a side of a seat. A retaining unit selectively and detachably retains a lower end of the metal arm at a plurality of retaining positions. The retaining unit is biased by a biasing member in a retaining direction.

Abstract: A backrest of a motorcycle is provided with a pair of angle-adjusting units. In each angle-adjusting unit, a metal arm of the backrest is pivotally connected, by a connecting shaft, to an inner side of each of a seat stay mounted along a side of a seat. A retaining unit selectively and detachably retains a lower end of the metal arm at a plurality of retaining positions. The retaining unit is biased by a biasing member in a retaining direction.

Abstract: A vanity mirror device for a trunk includes: a back plate of a vanity mirror, which is carried on an inner wall of a trunk lid, so that it can be turned between a housed position and any use position; and a clip device mounted on the back plate for grasping a retaining shaft provided on the inner wall of the trunk lid when the back plate is at the housed position. The clip device includes: a pair of resilient finger portions rising from the back plate and intersecting each other immediately before the retaining shaft; and claw portions which are formed at tip ends of the resilient finger portions and which are brought into engagement with opposite side of the retaining shaft by resilient forces of the resilient finger portions. Thus, it is possible to easily return the vanity mirror to the housed position, while increasing the retaining force for the vanity mirror when it is in a housed state.

Abstract: A vanity mirror device for a trunk includes: a back plate of a vanity mirror, which is carried on an inner wall of a trunk lid, so that it can be turned between a housed position and any use position; and a clip device mounted on the back plate for grasping a retaining shaft provided on the inner wall of the trunk lid when the back plate is at the housed position. The clip device includes: a pair of resilient finger portions rising from the back plate and intersecting each other immediately before the retaining shaft; and claw portions which are formed at tip ends of the resilient finger portions and which are brought into engagement with opposite side of the retaining shaft by resilient forces of the resilient finger portions. Thus, it is possible to easily return the vanity mirror to the housed position, while increasing the retaining force for the vanity mirror when it is in a housed state.