Abstract: A fluid detection sensor includes: an optical sensor including a light emitting element array and a light receiving element array which are arranged on a substrate along a longitudinal direction thereof; a flow path member which includes a tubular body which is transparent and is arranged along the longitudinal direction facing the optical sensor, an inside of the tubular body constituting a flow path through which a plurality of substantially immiscible fluids flow as a slug flow; and a reflecting member placed on a side opposite to the optical sensor with respect to the flow path. The fluid detection sensor detects changes in light which occur in accordance with a movement of the plurality of fluids by the light receiving element array receiving light which is emitted by the light emitting element array toward the slug flow in the flow path and is reflected by the reflecting member.

Abstract: A fluid detection sensor includes: an optical sensor including a light emitting element array and a light receiving element array which are arranged on a substrate along a longitudinal direction thereof; a flow path member which includes a tubular body which is transparent and is arranged along the longitudinal direction facing the optical sensor, an inside of the tubular body constituting a flow path through which a plurality of substantially immiscible fluids flow as a slug flow; and a reflecting member placed on a side opposite to the optical sensor with respect to the flow path. The fluid detection sensor detects changes in light which occur in accordance with a movement of the plurality of fluids by the light receiving element array receiving light which is emitted by the light emitting element array toward the slug flow in the flow path and is reflected by the reflecting member.

Abstract: A light receiving/emitting element module includes: a substrate; a light emitting element disposed on one principal face of the substrate; a light receiving element disposed on the one principal face and disposed next to the light emitting element in a first direction; and an optical element located away from the one principal face, and having a first principal face, and a second principal face. The optical element includes a first lens for the light emitting element, and a second lens for the light receiving element. The first lens and the second lens are disposed side by side in the first direction, and a curved surface defining the first lens and a curved surface defining the second lens which are disposed on at least one of the first principal face and the second principal face, intersect each other.

Abstract: A light receiving and emitting element module includes a substrate; a light emitting element and a light receiving element on an upper surface of the substrate; a frame-shaped outer wall that on the upper surface of the substrate; and a light shielding wall that is positioned inside the outer wall and partitions an internal space of the outer wall into spaces respectively corresponding to the light emitting element and the light receiving element. The light shielding wall includes a light emitting element-side shading surface on the light emitting element side, a light receiving element-side shading surface on the light receiving element side, and a lower surface that is connected to each of the light emitting element-side shading surface and the light receiving element-side shading surface, and that faces the substrate. The lower surface has an inclined surface inclined with respect to the upper surface of the substrate.

Abstract: A light receiving and emitting element module includes a substrate; a light emitting element and a light receiving element on an upper surface of the substrate; a frame-shaped outer wall that on the upper surface of the substrate; and a light shielding wall that is positioned inside the outer wall and partitions an internal space of the outer wall into spaces respectively corresponding to the light emitting element and the light receiving element. The light shielding wall includes a light emitting element-side shading surface on the light emitting element side, a light receiving element-side shading surface on the light receiving element side, and a lower surface that is connected to each of the light emitting element-side shading surface and the light receiving element-side shading surface, and that faces the substrate. The lower surface has an inclined surface inclined with respect to the upper surface of the substrate.

Abstract: A light receiving and emitting element module includes a substrate; a light emitting element and a light receiving element on an upper surface of the substrate; a frame-shaped outer wall that on the upper surface of the substrate; and a light shielding wall that is positioned inside the outer wall and partitions an internal space of the outer wall into spaces respectively corresponding to the light emitting element and the light receiving element. The light shielding wall includes a light emitting element-side shading surface on the light emitting element side, a light receiving element-side shading surface on the light receiving element side, and a lower surface that is connected to each of the light emitting element-side shading surface and the light receiving element-side shading surface, and that faces the substrate. The lower surface has an inclined surface inclined with respect to the upper surface of the substrate.

Abstract: A light receiving/emitting element module includes: a substrate; a light emitting element disposed on one principal face of the substrate; a light receiving element disposed on the one principal face and disposed next to the light emitting element in a first direction; and an optical element located away from the one principal face, and having a first principal face, and a second principal face. The optical element includes a first lens for the light emitting element, and a second lens for the light receiving element. The first lens and the second lens are disposed side by side in the first direction, and a curved surface defining the first lens and a curved surface defining the second lens which are disposed on at least one of the first principal face and the second principal face, intersect each other.

Abstract: The light receiving/emitting device uses an integrated light receiving/emitting element wherein a light receiving element and a light emitting element are provided on one main surface of a substrate. The substrate comprises a first-conductivity-type semiconductor. At least one electrode layer is placed in an area corresponding to at least the light receiving element and the light emitting element on the other main surface of the substrate. The light receiving element comprises: a first second-conductivity-type semiconductor layer formed on the one main surface of the substrate; a first anode electrode formed on the top surface of the first second-conductivity-type semiconductor layer; and a first cathode electrode formed on the top surface of the one main surface of the substrate. The electrode layer, the first anode electrode and the first cathode electrode have the same electric potential.

Abstract: A light receiving/emitting element includes a substrate, a plurality of light emitting elements on or in a first surface of the substrate, and a first light receiving element that is a photodiode at the first surface side of the substrate. The plurality of light emitting elements are arranged in a first direction and constitute a light emitting element array, and the first light receiving element is arranged at the one end side of the light emitting element array. The substrate and the plurality of light emitting elements are formed integrally with each other, and the substrate and the first light receiving element are formed integrally with each other. With those features, a light receiving/emitting element and a sensor device can be realized which are small in size, and which have high sensing performance and high response speed.

Abstract: A light receiving and emitting element module includes a substrate; a light emitting element and a light receiving element on an upper surface of the substrate; a frame-shaped outer wall that on the upper surface of the substrate; and a light shielding wall that is positioned inside the outer wall and partitions an internal space of the outer wall into spaces respectively corresponding to the light emitting element and the light receiving element. The light shielding wall includes a light emitting element-side shading surface on the light emitting element side, a light receiving element-side shading surface on the light receiving element side, and a lower surface that is connected to each of the light emitting element-side shading surface and the light receiving element-side shading surface, and that faces the substrate. The lower surface has an inclined surface inclined with respect to the upper surface of the substrate.

Abstract: The light receiving/emitting device uses an integrated light receiving/emitting element wherein a light receiving element and a light emitting element are provided on one main surface of a substrate. The substrate comprises a first-conductivity-type semiconductor. At least one electrode layer is placed in an area corresponding to at least the light receiving element and the light emitting element on the other main surface of the substrate. The light receiving element comprises: a first second-conductivity-type semiconductor layer formed on the one main surface of the substrate; a first anode electrode formed on the top surface of the first second-conductivity-type semiconductor layer; and a first cathode electrode formed on the top surface of the one main surface of the substrate. The electrode layer, the first anode electrode and the first cathode electrode have the same electric potential.

Abstract: It is an object of the invention to present an image scanner of high performance, high reliability, and low cost, capable of realizing high image quality of reading image and suited to small size, and an illuminating apparatus of low cost capable of increasing the quantity of light for illuminating an object to be read.

Abstract: A document reading apparatus comprises a light transmitting plate in contact with a document, a light source to light the document, a plurality of lenses arranged in line at a specified interval to image light reflected from the document and form a scaled-down document image, a plurality of semiconductor chips having a multiplicity of photoelectric transducer elements arranged in line respectively corresponding to each lens in order to receive the document image, a circuit wiring base plate on which semiconductor chips are placed, and a body unit to hold the light transmitting plate, the light source, and the circuit wiring base plate. The document image is formed in a scaled-down state by the plurality of lenses, and received by the plurality of semiconductor chips respectively corresponding to each lens. Since the document image is formed in a scaled-down state, it is not necessary to arrange the photoelectric transducer elements continuously between adjacent semiconductor chips.