Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Noda Screen Co., Ltd.

Daisuke Iguchi

Kazuhiro Sakai

Tomoaki Sakita

Takeshi Minamiru

Yoshinori Shirakawa

Kaoru Yasukawa

Tsutomu Otsuka

Takashi Kondo

Akemi Murakami

Shoji Yamaguchi

Osamu Ueno

Takashi Nomiyama

Kiichi Ueyanagi

Yutaka Akiyama

Satoshi Inada

Seiji Ono

Atsunori Hattori

Hideo Kobayashi

Michiaki Murata

Kanji Otsuka

Kenichi Ono

Kazumi Ikeda

Joji Wakita

A light-emitting device includes: a base material; an electrode that is disposed on a front surface of the base material, that has a light-emitting element on a front surface of the electrode, and that is electrically connected to the light-emitting element; a connection portion disposed at a position separated from the electrode on the front surface of the base material and connected to a conductive portion having a reference potential; and a heat transfer member that includes a contact surface along the front surface of the base material, the contact surface being in contact with a front surface of the electrode and a front surface of the connection portion, the heat transfer member being configured to transfer heat from the electrode to the connection portion.

Light-emitting device, heat transfer member, and optical measurement device

A light-emitting device includes a laser element array having a quadrangular planar shape, a pair of capacitors that supply an electric current for light emission of the laser element array, and a driving unit that drives the laser element array by turning on and off the electric current for light emission of the laser element array. The pair of capacitors are disposed beside two sides of the laser element array that face each other so as to sandwich the laser element array, and the driving unit is disposed beside another side of the laser element array.

Light-emitting device, optical device, measurement device, and information processing apparatus

A light-emitting device includes plural driving units; plural laser element arrays connected to the respective plural driving units; and a connection wire that interconnects terminals of the plural laser element arrays, the terminals being connected to the plural driving units.

A light emitting device includes: a substrate that is provided with at least a part of a resonant circuit in which resonance occurs; and a light emitting element that emits light in a case where a current in the resonant circuit is supplied, in which the substrate has an electric accumulation layer provided in the resonant circuit and accumulating electric charge, and the resonant circuit is not provided with an electric accumulation element having a thickness larger than a thickness of the electric accumulation layer and accumulating electric charge.

Light emitting device and detection apparatus

A light-emitting device includes a first base member; a laser unit provided on the first base member; a capacitive element that is provided on the first base member and supplies a driving electric current to the laser unit; a wiring board that is constituted by a second base member having lower thermal conductivity than the first base member and on which the first base member is mounted; and a driving unit that is mounted on the wiring board and drives the laser unit.

Light-emitting device, optical device, and measurement device

A light emitting device includes a wiring board having a first wiring layer and a second wiring layer adjacent to the first wiring layer via an insulating layer, a laser having a cathode electrode and an anode electrode, mounted on the wiring board, and driven through low-side driving, and a capacitive element mounted on the wiring board and configured to supply a drive current to the laser. The first wiring layer includes a cathode wire connected to the cathode electrode, and an anode wire connected to the anode electrode. The second wiring layer includes a reference potential wire connected to a reference potential. The reference potential wire overlaps the anode wire. The anode wire surrounds the capacitive element.

Light emitting device, optical device, and measurement device

A light-emitting device includes: a first light-emitting element array that includes plural first light-emitting elements arranged at a first interval; a second light-emitting element array that includes plural second light-emitting elements arranged at a second interval wider than the first interval, second light-emitting element array being configured to output a light output larger than a light output of the first light-emitting element array, and being configured to be driven independently from the first light-emitting element array; and a light diffusion member provided on an emission path of the second light-emitting element array.

Light-emitting device, optical device, and information processing device

A light-emitting device includes an insulating base member having thermal conductivity of 10 W/m·K or more; a light-emitting element provided on a front surface side of the base member; a first rear surface wire that is provided on a rear surface side of the base member and is connected to one of a cathode electrode and an anode electrode of the light-emitting element; a second rear surface wire that is provided on the rear surface side of the base member and is connected to the other one of the cathode electrode and the anode electrode; and a reference potential wire that is provided on the rear surface side of the base member and is connected to an external reference potential.

Light-emitting device, optical device, and information processing apparatus

A light-emitting element array chip includes: a first light-emitting element array that includes a first light-emitting element including a first substrate, a light-emitting element layer formed on the first substrate, and a first cathode electrode electrically connected to the light-emitting element layer; and a second light-emitting element array that includes a second light-emitting element including a second substrate, a non-p-type lower reflector formed on the second substrate, and a second cathode electrode electrically connected to the non-p-type lower reflector, in which the first light-emitting element array is provided on an emission surface side of the second light-emitting element array.

Light-emitting element array chip, light-emitting device, optical device, and information processing device

A light emitting device includes a wiring substrate, a light emitting element array that includes a first side surface and a second side surface facing each other, and a third side surface and a fourth side surface connecting the first side surface and the second side surface to each other and facing each other, the light emitting element array being provided on the wiring substrate, a driving element that is provided on the wiring substrate on the first side surface side and drives the light emitting element array, a first circuit element and a second circuit element that are provided on the wiring substrate on the second side surface side to be arranged in a direction along the second side surface, and a wiring member that is provided on the third side surface side and the fourth side surface side and extends from a top electrode of the light emitting element array toward an outside of the light emitting element array.

Light emitting device

A light-emitting device includes a laser unit; and a first capacitive element and a second capacitive element that supply a driving electric current to the laser unit; wherein the first capacitive element has a smaller capacity and smaller equivalent series inductance than the second capacitive element, and a length of a first electric current path along which the driving electric current output from the first capacitive element returns to the first capacitive element is shorter than a length of a second electric current path along which the driving electric current output from the second capacitive element returns to the second capacitive element.

A light-emitting device includes one or more light-emitting units each including a light-emitting element including a function of a thyristor; an electrode for light emission to which a first voltage is applied for light emission of the light-emitting unit; and one or more light emission permission thyristors that permit the light-emitting element to emit light by a second voltage that is lower than the first voltage and set irrespective of the first voltage.

Light-emitting device and measurement device

A light-emitting element array includes multiple light-emission instruction units arranged in a first direction; a first light-emitting element group row including light-emitting element groups each including a multiple light-emitting elements such that the light-emitting element groups are arranged in a direction intersecting the first direction; a second light-emitting element group row including light-emitting element groups each including a multiple light-emitting elements such that the second light-emitting element group row is arranged along the first light-emitting element group row in the first direction; and a multiple wiring lines that connect the multiple light-emission instruction units to the light-emitting element groups in the first light-emitting element group row and the light-emitting element groups in the second light-emitting element group row to provide a light-emission instruction. The multiple wiring lines are connected such that in response to the multiple light-emission instruction units sequentially providing a light-emission instruction in the first direction, the light-emitting element groups in the first light-emitting element group row sequentially emit light in the direction intersecting the first direction and, after turning on of the first light-emitting element group row is completed, the light-emitting element groups in the second light-emitting element group row sequentially emit light in the direction intersecting the first direction.

Light-emitting element array, light emitting device, optical device, measurement device and information processing apparatus

A light-emitting device includes a wiring substrate, a base member provided on the wiring substrate, a light-emitting element array that has a first side surface and a second side surface facing each other, that has a third side surface and a fourth side surface facing each other and connecting the first side surface and the second side surface, and that is provided on the base member, a drive unit that is provided on the wiring substrate at a side of the first side surface and drives the light-emitting element array, a first circuit element that is provided on the base member at the side of the first side surface, a second circuit element that is provided on the base member at a side of the second side surface and has a larger occupation area on the base member than the first circuit element, and wiring members that are provided at a side of the third side surface and at a side of the fourth side surface and extend from an upper surface electrode of the light-emitting element array toward an outer side of the light-emitting element array.

Light-emitting device, optical device, and information processing device comprising plural wiring members and circuit elements on side surfaces of a light emitting element array

Growing community of inventors

Kanagawa, Japan

Daisuke Iguchi