Ushio Denki Kabushiki Kaisha

Glory Ltd.

Masaki Inoue

Seiji Kitamura

Kiyoyuki Kabuki

Masaki Yoshioka

Hiroshige Hata

Yoshihisa Yokokawa

Osamu Osawa

Yutaka Shiozaki

Yasutaka Toyoda

Kyohei Seki

Takahiro Hiraoka

Toshio Numata

Hironobu Yabuta

Taku Sumitomo

Hiroyuki Takada

Toru Akamatsu

Tatushi Igarashi

Hiroyuki Kushida

Masakazu Sakata

Tatuhiro Hiraoka

Motomori Tada

Provided are a light emitting element capable of maintaining high fluorescent intensity over a long period, and a fluorescent light source device. The light emitting element according to the present invention includes: a substrate; a reflection layer formed of a material containing Ag or Al, formed on the upper layer of the substrate; a diffusion prevention layer formed of a layer at least part of which being crystallized, the diffusion prevention layer being formed in contact with a surface of the reflection layer on a side opposite to the substrate; an enhanced reflection layer formed in contact with a surface of the diffusion prevention layer on a side opposite to the substrate; and a fluorescent body layer formed on the upper layer of the enhanced reflection layer.

Light emitting element, fluorescent light source device

The present invention has as its object the provision of a fluorescent light source device capable of stably obtaining high luminous efficiency and a production process of the same. The fluorescent light source device of the present invention includes a fluorescent plate which has a fluorescent light-emitting layer formed of a polycrystalline material and in which a periodic structure body is formed on an excitation light incident side of the fluorescent light-emitting layer. The fluorescent plate has a thermal diffusion layer which is directly bonded to a front surface of the fluorescent light-emitting layer on the excitation light incident side and has a thermal conductivity larger than that of the fluorescent light-emitting layer, and a high thermal conductive layer provided on a back surface of the fluorescent light-emitting layer opposite to the excitation light incident side. The high thermal conductive layer is formed of a light reflection layer and a bonding layer made of a metal, and the fluorescent plate is provided so as to cover a part of a surface of a heat dissipation substrate disposed on a side of the high thermal conductive layer side.

Fluorescent light source device and production process of same

One object is to easily manage a large number of banknotes. A money management system includes a banknote handling apparatus having a serial number reading unit that reads a serial number of each banknote to be grouped, and a management server having a control unit that manages by grouping the serial numbers read by the serial number reading unit, receives an input of a target serial number, identifies a target group containing the target serial number from among the groups and outputs the serial numbers of all the banknotes belonging to the target group.

Money management system and money management method

The present invention has as its object the provision of a fluorescence light source apparatus which provides a high emission efficiency of a fluorescent plate and a sufficiently high fluorescence intensity. According to the present invention, the fluorescence light source apparatus includes a fluorescent plate that receives excitation light to emit fluorescence, and a heat dissipation substrate that dissipates heat generated in the fluorescent plate, the fluorescent plate and the heat dissipation substrate being bonded via a solder layer, wherein the solder layer has a void ratio of not more than 75% and a maximum void diameter of not more than 0.4 mm. The solder layer may preferably have a void ratio of not more than 50% and a maximum void diameter of not more than 0.2 mm.

Fluorescence light source apparatus

An illumination device includes a plurality of excitation light sources; a fluorescent plate for receiving the excitation light and emitting fluorescent light; and an optical system for causing excitation light from each of the plurality of excitation light sources to be incident on the fluorescent plate, the optical system includes a plurality of reflection surfaces for redirecting the output from the respective excitation light sources into a divergent light pattern.

Lighting device with divergent reflection surfaces between excitation light sources and fluorescent plate

A fluorescence light source device includes a wavelength conversion member that emits fluorescence by excitation laser light. The wavelength conversion member has an excitation laser light receiving surface including a periodic structure having a periodic array of conical or truncated projections with an aspect ratio, which is a ratio of the height of the projection to the pitch in the periodic structure, of not lower than 0.2. The wavelength conversion member is formed from a phosphor composed of a polycrystal and contains a micro-scatterer with a refractive index of not lower than 1.0 for scattering the excitation laser light and fluorescence emitted from the phosphor. A ratio (T/R) between a light transmission percentage T [%] in the wavelength conversion member and a light reflection percentage R [%] in the wavelength conversion member is 1 to 20.

Fluorescence light source device with wavelength conversion member with particular ratio between light transmission percentage and light reflection percentage

The present invention has as its object the provision of a fluorescence light source apparatus that is prevented from a drop in reflectance and can provide high emission efficiency over a long period of time without causing the problem of exfoliation of a reflection layer from a fluorescent plate. The fluorescence light source apparatus according to the present invention includes a fluorescent plate that is made of a phosphor for emitting fluorescence under excitation light and a metal oxide and has a front surface serving as an excitation light incident surface, a reflection layer disposed on a back surface side of the fluorescent layer, and a heat dissipation substrate. A sealing layer covering the back surface and a peripheral side surface of the reflection layer is provided in close contact with a peripheral area of the back surface of the fluorescent plate via an adhesion layer.

Reflection type fluorescence light source apparatus

The fluorescence light source device of the present invention includes a fluorescence member formed from a phosphor composed of single crystal or polycrystal and excited by excitation light. A periodic structure layer made of a high refractive index material having a refractive index of not less than the refractive index of the fluorescence member is formed on the surface of the fluorescence member. The periodic structure layer has a surface with a periodic structure having a periodic array of conical or truncated projections and formed by an etching process. The aspect ratio which is a ratio of the height of the projections to the pitch in the periodic structure is within a range of 0.5 to 0.9.

Fluorescence light source device with periodic structure having an aspect ratio of 0.5 to 0.9 and method for producing the same

A fluorescent light source device includes a wavelength conversion member formed of a phosphor to be excited by excitation light. The wavelength conversion member includes a fluorescent member containing the phosphor, and a photonic structure part formed on the fluorescent member. An upper surface of the photonic structure part serves as a fluorescent light emitting surface of the wavelength conversion member. The photonic structure part is made from an inorganic compound layer that may be formed of a metal oxide and has a columnar structure extending in a direction away from the fluorescent member.

Fluorescent light source device, and method for manufacturing same

The present invention has as its object the provision of a fluorescence light source apparatus which has high reliability without a drop in reflectance over a long period of time. The fluorescence light source apparatus of the present invention includes a fluorescent plate that emits fluorescence under excitation light and has a front surface serving as an excitation light incident surface, a reflection layer that is disposed on a back surface side of the fluorescent plate, and a heat dissipation substrate, wherein a sealing layer covering a back surface and a peripheral side surface of the reflection layer is provided in close contact with a peripheral area of the back surface of the fluorescent plate via an adhesion layer, and a diffusion prevention layer formed by nickel plating is provided on the heat dissipation substrate via a bonding member layer.

A light source device includes a light emitting element adapted to emit exciting light; a fluorescent element having a phosphor and adapted to convert at least a portion of the exciting light emitted from the light emitting element into fluorescence and to reflect the fluorescence; and a common cooling member adapted to cool the light emitting element and the fluorescent element. The cooling member includes a first cooling surface coupled to the light emitting element for cooling the light emitting element, and a second cooling surface coupled to the fluorescent element for cooling the fluorescent element. The first cooling surface and the second cooling surface are placed in parallel with each other and are placed in such a way as to be oriented in the same direction.

Light source device

Provided is a fluorescence-emitting light source unit that includes a wavelength conversion member having a light receiving surface and a phosphor. The light receiving surface is configured to receive excitation light, and the phosphor is configured to convert the excitation light received by the light receiving surface into fluorescence and emit the fluorescence. The light receiving surface includes a cyclic structure having projections, in which the projections are cyclically arrayed and each have a substantially cone shape. An aspect ratio is about 0.2 or greater, in which the aspect ratio is a ratio of a height of any of the projections to a pitch of the array of the projections. The pitch of the array is of a size that falls within a range in which diffraction of the fluorescence emitted from the phosphor occurs.

Fluorescence-emitting light source unit

The money handling machine (banknote depositing and dispensing machine) includes a unique-code generating unitconfigured to generate a unique code that is used for a receiver of a journal in judging whether the journal is authentic or counterfeit based on at least a part or all of the deposit information printed on the journal by a printing unit (printer). The printing unit is configured to print on the journal the unique code generated by the unique-code generating unitas well as the deposit information that is information regarding money deposited into the money handling machine.

Money handling machine, money handling system and money handling method

A banknote deposit apparatus includes: a storing boxconfigured to receive the banknote stacked in a stacking unitso as to store the banknote; and a clamping and transporting mechanismconfigured to clamp surfaces of the banknote stacked in the stacking unitand to transport the banknote to a direction parallel to the surfaces of the clamped banknote so as to store the banknote in the storing box. A front openingthrough which the stacked banknote is taken out from outside, and a front shutter unitconfigured to open and close the front opening are disposed on a front surface of the stacking unit

Banknote deposit apparatus

A illuminating device used for an document reading apparatus that has two rod shape light guides and light emitting elements where each of the light guides has a light emitting face and two flat light reflection faces, which may have a group of minute prisms that are formed along the longitudinal direction of the faces, and where light from each light emitting element is guided in the longitudinal direction by the light guide and reflected by that faces, such that the light is emitted from the light emitting face of each light guide and a virtual plane that is vertical to a longitudinal direction of each of the two light guides has two light intensity peaks.

Growing community of inventors

Tokyo, Japan

Masaki Inoue