Abstract: A fiber optical transceiver includes a package, a plurality of lead frames provided with the package and protruding outward from the package, a first circuit board installed in the package and electrically connected to the plurality of lead frames, and an optical element provided on the first circuit board. The package includes a ceramic portion formed of ceramic and covered with a metallized film.

Abstract: An optical connector includes a housing in which a counterpart optical connector connected to a pair of optical fibers having a first optical fiber and a second optical fiber is fitted, a light emitting side lens portion accommodated in the housing, and in which a first end surface of the first optical fiber in the counterpart optical connector is disposed on one end side, a light receiving side lens portion accommodated in the housing, and in which a second end surface of the second optical fiber in the counterpart optical connector is disposed on one end side, a light emitting element disposed on the other end side of the light emitting side lens portion, and a light receiving element disposed on the other end side of the light receiving side lens portion.

Abstract: A connector includes a housing having a lock portion to be engaged with a mating housing when the housing is fitted with the mating housing, and a fitting-ensuring component mounted on the housing and configured to detect whether the housing and the mating housing are fitted with each other by avoiding interference with the lock portion and being movable to a predetermined mounting position when the housing and the mating housing are fitted with each other. The lock portion and the fitting-ensuring component are configured that at least a part of one of the lock portion and the fitting-ensuring component enters a recess of the other of the lock portion and the fitting-ensuring component so as to extend a movable range of the lock portion when the lock portion is operated so as to release engagement between the lock portion and the mating housing.

Abstract: A fiber optical transceiver includes a package, a plurality of lead frames provided with the package and protruding outward from the package, a first circuit board installed in the package and electrically connected to the plurality of lead frames, and an optical element provided on the first circuit board. The package includes a ceramic portion formed of ceramic and covered with a metallized film.

Abstract: An optical connector includes a housing in which a counterpart optical connector connected to a pair of optical fibers having a first optical fiber and a second optical fiber is fitted, a light emitting side lens portion accommodated in the housing, and in which a first end surface of the first optical fiber in the counterpart optical connector is disposed on one end side, a light receiving side lens portion accommodated in the housing, and in which a second end surface of the second optical fiber in the counterpart optical connector is disposed on one end side, a light emitting element disposed on the other end side of the light emitting side lens portion, and a light receiving element disposed on the other end side of the light receiving side lens portion.

Abstract: An optical connector includes a lens body, a photoelectric conversion module, and a housing. A light emitting side lens portion and a light receiving side lens portion are integrally formed on a substrate portion in the lens body. The photoelectric conversion module includes a light emitting element and a light receiving element disposed at positions facing the light emitting side lens portion and the light receiving side lens portion when combining the photoelectric conversion module with the lens body. The housing accommodates the photoelectric conversion module combined with the lens body. The lens body includes an optical path changing mechanism provided between the light emitting side lens portion and the light receiving side lens portion on the substrate portion, and changing at least an optical path of light from the light emitting side lens portion.

Abstract: An optical connector includes an optical filter 36 that is disposed between an end surface and a lens, and includes a through-hole that transmits part of the output light, when an inner diameter of the through-hole of the optical filter is denoted by B, a distance from the end surface to the optical filter in the optical axis direction is denoted by L, a maximum transmitted light output angle of transmitted light that passes through the through-hole and has a smaller angle than a maximum output angle ? of output light is denoted by ??, and an outer diameter of a core of an optical fiber is denoted by A, B=2×L×tan ???A, and L>A/tan ??/2 are satisfied.

Abstract: An optical connector includes an optical filter 36 that is disposed between an end surface and a lens, and includes a through-hole that transmits part of the output light, when an inner diameter of the through-hole of the optical filter is denoted by B, a distance from the end surface to the optical filter in the optical axis direction is denoted by L, a maximum transmitted light output angle of transmitted light that passes through the through-hole and has a smaller angle than a maximum output angle ? of output light is denoted by ??, and an outer diameter of a core of an optical fiber is denoted by A, B=2×L×tan ???A, and L>A/tan ??/2 are satisfied.

Abstract: An optical element module includes a lead frame an optical element mounted on the lead frame, a resin housing including an opening part, and a tube body. The resin housing contains a part of the lead frame on which the optical element is mounted. The tube body includes a tube part for receiving an optical fiber terminal, a lens arranged between the optical element and the optical fiber terminal, and a lid part which covers the opening part of the resin housing. The tube part, the lens and the lid part are integrally formed.

Abstract: An optical element module includes a lead frame an optical element mounted on the lead frame, a resin housing including an opening part, and a tube body. The resin housing contains a part of the lead frame on which the optical element is mounted. The tube body includes a tube part for receiving an optical fiber terminal, a lens arranged between the optical element and the optical fiber terminal, and a lid part which covers the opening part of the resin housing. The tube part, the lens and the lid part are integrally formed.

Abstract: An optical communication lens arranged between an optical element and an optical fiber terminal includes a first lens part having an aspherical convex shape facing the optical element, a second lens part having an aspherical convex shape facing the optical fiber terminal, and an intermediate part integrally formed with the first lens part and the second lens part therebetween. The first lens part, the second lens part and the intermediate part are integrally formed and are comprised of a resin having optical transparency. Shapes of the first lens part and the second lens part are asymmetric to each other. The second lens part is thicker than the first lens part.