Abstract: A surface emitting laser chip includes a first light emitting surface, a second light emitting surface, and a front electrode. The first light emitting surface and the second light emitting surface are formed on a first chip front surface and configured to emit laser light. The front electrode is formed on the first chip front surface and formed at a position separated from each of the first light emitting surface and the second light emitting surface. In plan view, the first light emitting surface and the second light emitting surface are arranged to be separated from each other in an X direction. The surface electrode is arranged between the first light emitting surface and the second light emitting surface in the X direction.

Abstract: A semiconductor light emitting device includes a surface emitting laser chip, a light receiving chip, a sealing member, and a reflecting portion. The surface emitting laser chip has a light emitting surface and emits laser light from the light emitting surface. The sealing member is formed of a material through which the laser light can pass and seals the surface emitting laser chip and the light receiving chip. The reflecting portion is provided in the sealing member and reflects a part of the laser light toward the light receiving chip. The light receiving chip is arranged at a position where the light receiving chip receives at least a part of reflected light by the reflecting portion.

Abstract: A semiconductor light-emitting device includes: a board including a front surface, a back surface facing an opposite side of the front surface, a first wiring pattern formed on the front surface, and a second wiring pattern formed on the side of the back surface with respect to the first wiring pattern; and a light-emitting element, a switching element, and a capacitor, which are electrically connected to one another by both the first wiring pattern and the second wiring pattern. Among the light-emitting element, the switching element, and the capacitor, a first predetermined element and a second predetermined element are arranged in a first direction and the second predetermined element and a third predetermined element are arranged in a second direction. The second wiring pattern forms a second current path opposite to a direction of a first current path. The second current path overlaps the first current path.

Abstract: A semiconductor light-emitting device includes: a board including a front surface, a back surface facing an opposite side of the front surface, a first wiring pattern formed on the front surface, and a second wiring pattern formed on the side of the back surface with respect to the first wiring pattern; and a light-emitting element, a switching element, and a capacitor, which are electrically connected to one another by both the first wiring pattern and the second wiring pattern. Among the light-emitting element, the switching element, and the capacitor, a first predetermined element and a second predetermined element are arranged in a first direction and the second predetermined element and a third predetermined element are arranged in a second direction. The second wiring pattern forms a second current path opposite to a direction of a first current path. The second current path overlaps the first current path.

Abstract: A semiconductor light emitting device includes a substrate, a common conductive portion formed on the substrate, a semiconductor light emitting element mounted on the common conductive portion, and an electronic component mounted on the common conductive portion and electrically connected to the semiconductor light emitting element by the common conductive portion. This structure shortens the conductive path between the semiconductor light emitting element and the electronic component, thereby reducing capacitance caused by the conductive path between the semiconductor light emitting element and the electronic component. Thus, while reducing parasitic capacitance, the semiconductor light emitting element and the electronic component are electrically connected.

Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.

Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.

Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.

Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a light-transmitting resin 5 covering the light-emitting element 2, and a light-shielding resin 6 covering the light-transmitting resin 4 and the light-transmitting resin 5. The wiring pattern 8 includes a first light-blocking portion 83 interposed between the light-shielding resin 6 and the substrate 1 and positioned between the light-receiving element 3 and the light-emitting element 2 as viewed in x-y plane. The first light-blocking portion 83 extends across the light-emitting element 2 as viewed in the direction x.

Abstract: A linear light source device illuminates a document properly, and an image reading device includes such a light source device. The light source device includes a light source and a light-guiding member. The light-guiding member introduces the light emitted from the light source from one end portion in x-direction, cause the light to travel in x-direction, and emits the light from a light exit portion at one end in z-direction, which is orthogonal to x-direction. The light-guiding member includes, at the other end in z-direction, a light-reflecting portion that reflects light to the light exit portion. One end face of the light-guiding member in y-direction, which is orthogonal to x- and z-directions, is inclined so as to become closer to the other end face in y-direction with decreasing distance from the light exit portion in z-direction. This allows light to easily travel to the light-reflecting portion.

Abstract: A semiconductor device includes a substrate with first and second lower electrodes, a semiconductor element supported on the substrate and including upper and lower electrodes, a conductive bonding material bonding the lower electrode of the element and the substrate to each other, a wire connecting the upper electrode of the element and the substrate to each other, and a sealing resin covering the semiconductor element and the wire. The substrate includes a barrier that encloses at least partially the conductive bonding material.