Abstract: The light emitting device includes a mounting substrate, an ultraviolet light emitting element having a main surface facing opposite the mounting surface and a side surface, a light transmitting member forming a housing space for housing the light emitting element in a gap with the mounting surface of the mounting substrate, an inert compound being liquid at normal temperature and pressure filled in at least a main gap between the main surface of the light emitting element and the light transmitting member in a housing space, and a gas layer formed in a gap facing the side surface of the light emitting element in the housing space, wherein the inert compound has a contact angle of 10° to 30° with respect to the main surface of the light emitting element at a temperature of 25° C.

Abstract: The bonding layer bonds the electrode on the first surface of the ultraviolet light emitting element and a part of the mounting surface of the substrate. The adhesive layer adheres the substrate to the light transmitting member. The substrate and the light transmitting member are disposed in a state where the ultraviolet light emitting element is sandwiched therebetween. The fluorocarbon compound is a liquid at normal temperature and pressure. The fluorocarbon compound fills a gap between the second surface of the ultraviolet light emitting element and the light transmitting member in a state of being in contact with the second surface and the light transmitting member. The fluorocarbon compound is in contact with the side surface of the ultraviolet light emitting element. The fluorocarbon compound is not in contact with the adhesive layer.

Abstract: A light emitting device includes a mounting substrate, a light emitting element emitting ultraviolet light, a light transmitting member forming an accommodation space in a region facing the mounting substrate and having a recess accommodating the light emitting element, an inert compound being a liquid at ordinary temperature and pressure, and a gas layer formed in the accommodation space. The inert compound is provided to fill a major region where a main surface of the light emitting element and a ceiling surface of the recess face each other, and a first subsidiary region where a portion of a side surface of the light emitting element closer to the main surface and a side wall surface of the recess face each other. The gas layer is formed in a second subsidiary region that faces a portion of the side surface of the light emitting element closer to the mounting substrate.

Abstract: A light emitting device includes a substrate, a light emitter emitting ultraviolet light, a light transmitting member forming a space and having a recess accommodating the light emitter, an inert compound being a liquid at ordinary temperature and pressure, a gas layer formed in the space, and a bonding layer bonding the substrate and the light transmitting member. The inert compound is provided to fill a major region where a main surface of the light emitter faces a ceiling surface of the recess, and a first subsidiary region where a portion of a side surface of the light emitter closer to the main surface faces a side surface of the recess. The gas layer is formed in a second subsidiary region facing a portion of the side surface of the light emitter closer to the substrate. The bonding layer is located closer to the substrate than the first subsidiary region.

Abstract: The bonding layer bonds the electrode on the first surface of the ultraviolet light emitting element and a part of the mounting surface of the substrate. The adhesive layer adheres the substrate to the light transmitting member. The substrate and the light transmitting member are disposed in a state where the ultraviolet light emitting element is sandwiched therebetween. The fluorocarbon compound is a liquid at normal temperature and pressure. The fluorocarbon compound fills a gap between the second surface of the ultraviolet light emitting element and the light transmitting member in a state of being in contact with the second surface and the light transmitting member. The fluorocarbon compound is in contact with the side surface of the ultraviolet light emitting element. The fluorocarbon compound is not in contact with the adhesive layer.

Abstract: An ultraviolet light emitting device includes a substrate, an ultraviolet light emitting element, a bonding layer, a fluororesin film, and a fluorocarbon compound. The substrate includes a mounting surface. The ultraviolet light emitting element includes a first surface, a second surface, and a side surface. The bonding layer bonds the electrode on the first surface of the ultraviolet light emitting element and a part of the mounting surface of the substrate. The fluororesin film is a flexible material configured to transmit ultraviolet light. The substrate and the fluororesin film are disposed in a state where the ultraviolet light emitting element is sandwiched therebetween. The fluorocarbon compound is a liquid at normal temperature and pressure. The fluorocarbon compound fills a gap between the side surface of the ultraviolet light emitting element and the fluororesin film in a state of being in contact with the side surface and the fluororesin film.

Abstract: A light-emitting device includes a substrate including a wiring on a surface thereof, a light-emitting element mounted on the substrate, a lens disposed on the substrate so as to cover the light-emitting element, an annular protrusion provided on the substrate and around the light-emitting element, and a sealing liquid disposed in a space defined under the lens to seal the light-emitting element. A shape of the sealing liquid is maintained between the substrate and a region of an inner surface of the lens above the light-emitting element by surface tension such that the sealing liquid is surrounded by an air layer in the space. A shape of a portion of the sealing liquid in contact with the substrate is maintained by the protrusion. The sealing liquid has a shape that widens laterally in a direction from the substrate to the lens.

Abstract: In an ultraviolet light emitting device, a fluororesin layer includes an element covering portion that covers a second surface of an ultraviolet light emitting element, and a substrate covering portion that covers a mounting surface of a substrate. The substrate covering portion includes a flat portion having a flat surface. A distance from a point in the element covering portion farthest from the second surface of the ultraviolet light emitting element to the second surface of the ultraviolet light emitting element is 1.3 times or more and 5 times or less a distance from the flat surface of the flat portion of the substrate covering portion to the mounting surface of the substrate.

Abstract: An ultraviolet light emitting device includes a substrate, an ultraviolet light emitting element, a bonding layer, a fluororesin film, and a fluorocarbon compound. The substrate includes a mounting surface. The ultraviolet light emitting element includes a first surface, a second surface, and a side surface. The bonding layer bonds the electrode on the first surface of the ultraviolet light emitting element and a part of the mounting surface of the substrate. The fluororesin film is a flexible material configured to transmit ultraviolet light. The substrate and the fluororesin film are disposed in a state where the ultraviolet light emitting element is sandwiched therebetween. The fluorocarbon compound is a liquid at normal temperature and pressure. The fluorocarbon compound fills a gap between the side surface of the ultraviolet light emitting element and the fluororesin film in a state of being in contact with the side surface and the fluororesin film.

Abstract: The bonding layer bonds the electrode on the first surface of the ultraviolet light emitting element and a part of the mounting surface of the substrate. The adhesive layer adheres the substrate to the light transmitting member. The substrate and the light transmitting member are disposed in a state where the ultraviolet light emitting element is sandwiched therebetween. The fluorocarbon compound is a liquid at normal temperature and pressure. The fluorocarbon compound fills a gap between the second surface of the ultraviolet light emitting element and the light transmitting member in a state of being in contact with the second surface and the light transmitting member. The fluorocarbon compound is in contact with the side surface of the ultraviolet light emitting element. The fluorocarbon compound is not in contact with the adhesive layer.

Abstract: A light-emitting device includes a light-emitting element mounted on a lead frame, and a sealing material sealing the light-emitting element and having a thickness of not more than 1 mm and including a silicone resin as a main component. The sealing material includes a first gas barrier layer that a physical property value obtained by dividing a difference between a value of an average spin-spin relaxation time of 1H nuclei at a resonance frequency of 25 MHz at 140° C. and that at 25° C. by 115 is not more than 3.5 and the average spin-spin relaxation time at 140° C. is not more than 500 ?sec.

Abstract: An assembly block (20) including an LED element (51), a control unit (52) that controls the LED element (51), and a housing (30) that holds the LED element (51) and the control unit (52) is provided. The housing (30) includes mechanical interfaces (32, 33) for mechanically connecting to the outside and is at least partially translucent. The control unit (52) includes a first functional unit (111) that stores, on receiving first data sets (D1) that include data for controlling the color of light to be outputted from the LED element (51) and a transfer command via the first electrical interface (79a) associated with the first mechanical interface (32), the first data set (D1) in a buffer (121) and outputs the stored first data set (DS1) in the buffer (121) together with the transfer command via a second electrical interface (79b) associated with the mechanical interface (33) on the second side.

Abstract: An assembly block (20) including an LED element (51), a control unit (52) that controls the LED element (51), and a housing (30) that holds the LED element (51) and the control unit (52) is provided. The housing (30) includes mechanical interfaces (32, 33) for mechanically connecting to the outside and is at least partially translucent. The control unit (52) includes a first functional unit (111) that stores, on receiving first data sets (D1) that include data for controlling the color of light to be outputted from the LED element (51) and a transfer command via the first electrical interface (79a) associated with the first mechanical interface (32), the first data set (D1) in a buffer (121) and outputs the stored first data set (DS1) in the buffer (121) together with the transfer command via a second electrical interface (79b) associated with the mechanical interface (33) on the second side.

Abstract: An information reader has a light source, an optical system having a light receiving sensor and a lens, and a board supporting the source and sensor such that a sensor axis of the sensor perpendicular to the sensor and passing an intersection of an optical axis of the optical system and the sensor is parallel to an emission axis of the source. A positional relation among the lens, sensor and source satisfies a distance Di between the lens and sensor, a distance Da between an optical axis of the lens and the axis of the source, and a distance Do between the lens and a readable area. The axis of the sensor is shifted from the optical axis of the lens by an offset value F=Da×Di/Do in a direction away from the source. The reader optically reads a code placed in the readable area.

Abstract: An information reader has a light source, an optical system having a light receiving sensor and a lens, and a board supporting the source and sensor such that a sensor axis of the sensor perpendicular to the sensor and passing an intersection of an optical axis of the optical system and the sensor is parallel to an emission axis of the source. A positional relation among the lens, sensor and source satisfies a distance Di between the lens and sensor, a distance Da between an optical axis of the lens and the axis of the source, and a distance Do between the lens and a readable area. The axis of the sensor is shifted from the optical axis of the lens by an offset value F=Da×Di/Do in a direction away from the source. The reader optically reads a code placed in the readable area.

Abstract: There is provided a tool for software verification support which can collectively collect information effective for verification of software operations such as understanding of operating environments of software, following up of a fault cause, verification of normal operations by one-touch operation or by a command from a program.

Abstract: An improved structure of an optical information code reader which is compact in size and may be manufactured at low costs. The code reader includes an optical mechanism disposed to define an optical path along which a return of light from an information code travels from a window formed in a reader body to an optical sensor. The optical mechanism including a plurality of reflecting mirrors arranged to reverse orientation of the optical path between the window and the optical sensor, thereby resulting in a decrease in length of the optical mechanism which allows the overall size of the code reader to be decreased. The reader body is so designed as to enable different types of optical units and different types of head covers to be mounted selectively, thereby allowing different types of code readers to be manufactured at low costs.

Abstract: A bar code reader is provided which comprises a photodetector responsive to light reflected from a bar code to provide a signal indicative of bar code information, a lens assembly including a near range focus lens and a long range focus lens having different focal lengths, and a liquid crystal filter assembly. The liquid crystal assembly includes a near range focus filter and a long range focus filter and selectively allows only light emerging from one of the near range focus lens and the long range focus lens to reach the photodetector according to the distance to the bar code.

Abstract: A handy type bar code reader for reading bar codes, including within a body case an LED base for radiating light used for reading bar codes; a condenser lens for condensing the light radiated from the LED base and conducting the condensed light to the bar codes; a focusing optical system for focusing a bar code image based on the light reflected from the bar codes in a predetermined read position, the focusing optical system comprising a reflecting mirror and a focusing lens; and an image sensor for reading the focused bar code image. The LED base and a condenser lens are held within the body case in a non-fixed state with respect to the body case.

Abstract: Apparatus for reading optical information such as a bar code capable of reflecting ambient light and including a hand-held reader containing an image sensor. The hand-held reader is constructed so that ambient light illuminates the optical information, whereby an image of the optical information is imaged by ambient light reflected from the optical information on the image sensor so that the image is converted into an electric signal. The hand-held reader further includes a light detector for detecting intensity of the ambient light and the image sensor is controlled so that the exposure time thereof is changed in accordance with intensity of the ambient light detected by the light detector.