Inventor

FUKUNAGA TOSHIAKI

JP57 patents

⚠️ This page may combine multiple inventors who share the name “FUKUNAGA TOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUKUNAGA TOSHIAKI

FUJI PHOTO FILM CO LTD

Semiconductor laser apparatus

High-power short-wavelength semiconductor light emitting device having active layer with increased indium content

High-power semiconductor laser device having index-guided structure with InAlGaP current confinement layer

Method of fabricating a diffraction grating

Integrated optics semiconductor laser device

Semiconductor laser

Substrate including wide low-defect region for use in semiconductor element

Semiconductor laser device

Semiconductor laser

Semiconductor laser

Semiconductor laser device

High-power semiconductor laser device in which near-edge portions of active layer are removed

Semiconductor laser element

High-power semiconductor laser device having current confinement structure and index-guided structure, and oscillating in transverse mode

Index optical waveguide semiconductor laser

Semiconductor laser element and semiconductor laser

Semiconductor laser and method of manufacturing the same

Laser apparatus in which GaN-based compound surface-emitting semiconductor element is excited with GaN-based compound semiconductor laser element

Fundamental-transverse-mode index-guided semiconductor laser device having upper optical waveguide layer thinner than lower optical waveguide layer

Pattern forming method and pattern forming device

Semiconductor laser element and semiconductor laser

Semiconductor laser device having thickened impurity-doped aluminum-free optical waveguide layers

Semiconductor laser device which includes AlGaAs optical waveguide layer being formed over internal stripe groove and having controlled refractive index

High-power semiconductor laser device having current confinement structure and index-guided structure and oscillating in transverse mode

High-power semiconductor laser device having current confinement structure and index-guided structure

Semiconductor laser

Semiconductor laser

Semiconductor laser device

Semiconductor laser device having strain buffer layer between compressive-strain quantum well layer and tensile-strain barrier layer

InGaAsP or InGaAs semiconductor laser element in which near-edge portion of active layer is substituted with GaAs optical waveguide layer having greater bandgap than active layer

Semiconductor laser device including arrow structure precisely formed to suppress P-As interdiffusion and Al oxidation

Semiconductor laser device in which compressive strain active layer is sandwiched between tensile strain optical waveguide layers and average strain is limited

High-power semiconductor laser device having current confinement structure and index-guided structure and stably oscillating in single mode

InGaAsP semiconductor laser device in which near-edge portions are filled with non-absorbent layer, and lower optical waveguide layer includes InGaP intermediate layer

Short wavelength laser

Semiconductor laser device with a current non-injection region near a resonator end face, and fabrication method thereof

GaN substrate formed under controlled growth condition over GaN layer having discretely formed pits

Semiconductor laser device having InGaAs compressive-strain active layer, GaAsP tensile-strain barrier layers, and InGaP optical waveguide layers

Semiconductor laser element including optical waveguide layers which have gradually varying bandgaps so as to reduce electrical resistance at interfaces

FUJIFILM CORP

Photoelectric converting film stack type solid-state image pickup device

Solid-state imaging device that efficiently guides light to a light-receiving part

Color sensor and color image pickup method

Color light receiving device and image pickup device

Color light receiving device and image pickup device

Liquid ejection head and method of producing the same

Liquid ejection head and method of producing the same

Liquid ejection head

FUKUNAGA TOSHIAKI

Photoelectric conversion device and solar cell using the photoelectric conversion device

Earphone microphone-mountable electronic appliance

OKI ELECTRIC IND CO LTD

Integrated semiconductor laser