Seiko Epson Corporation

Sophia School Corporation

Hiroyasu Kaseya

Kimio Nagasaka

Akira Miyamae

Yoshitaka Itoh

Takafumi Noda

Katsumi Kishino

Hideaki Yamada

Junichi Okamoto

Fumika Sumiyama

A light emitting device includes a laminated structure having a plurality of columnar parts, wherein the columnar part includes a first semiconductor layer, a second semiconductor layer different in conductivity type from the first semiconductor layer, and a third semiconductor layer disposed between the first semiconductor layer and the second semiconductor layer, the third semiconductor layer includes a light emitting layer, and the second semiconductor layer includes a first portion, and a second portion which surrounds the first portion in a plan view from a laminating direction of the first semiconductor layer and the light emitting layer, and is lower in impurity concentration than the first portion.

Light emitting device and projector

A light source module includes a light emitting element having a resonator formed of a photonic crystal structure, and a polarization conversion element, wherein the polarization conversion element includes a polarization split layer that reflects first polarized light toward a first direction, and transmit second polarized light toward a second direction, a reflecting layer that reflects the first polarized light, toward the second direction, and a retardation layer which is disposed in a light path of one of the first polarized light and the second polarized light, and converts the one of the first polarized light and the second polarized light into another of the first polarized light and the second polarized light, the resonator has a resonant part, and in a plan view, a length of the resonant part in the first direction is shorter than a length of the resonant part in a third direction perpendicular to the first direction and the second direction.

Light source module and projector

A light emitting apparatus including a light emitting device including a first base at which a laminate is provided, a second base at which the light emitting device is provided, and a first member provided between the first base and the second base, wherein the laminate includes a light emitter, the light emitter includes a first semiconductor layer, a second semiconductor layer of a conductivity type different from the conductivity type of the first semiconductor layer, and a light emitting layer provided between the first semiconductor layer and the second semiconductor layer and capable of emitting light when current is injected into the light emitting layer, the first member has one end connected to the first base and another end connected to the second base, and the laminate is connected to the second base on the side opposite the first base.

Light emitting apparatus, projector, method for manufacturing light emitting apparatus

The light emitting apparatus includes a light emitting device including a first base at which a laminate is provided and a second base at which the light emitting device is provided. The laminate includes a first semiconductor layer, a second semiconductor layer of a conductivity type different from the conductivity type of the first semiconductor layer, and a light emitting layer provided between the first semiconductor layer and the second semiconductor layer and capable of emitting light when current is injected into the light emitting layer. The laminate includes a plurality of columnar sections. Connecting member is so provided between the adjacent columnar sections as to be connected to the adjacent columnar sections. The laminate is connected to the second base on the side opposite the first base.

Light emitting apparatus, projector, and method for manufacturing light emitting apparatus

A light emitting device includes a light emitting element including a first base member, and a stacked body provided to the first base member, and a second base member provided with the light emitting element, the stacked body includes a first columnar section having a first height, and a second columnar section having a second height smaller than the first height, the first columnar section and the second base member are electrically connected to each other via a first conductive member between the stacked body and the second base member, the second columnar section and the second base member are electrically connected to each other via a second conductive member between the stacked body and the second base member, the first conductive member has a third height, and the second conductive member has a fourth height larger than the third height.

Light emitting device, projector, and method of manufacturing light emitting device

A projector includes a light emitting device and a light modulator. The light emitting device includes first and second semiconductor layers respectively electrically connected to first and second electrodes, a light emitting layer generating light by having a current injected thereinto, and a third electrode connected to the second electrode. The second electrode transmits the light generated in the light emitting layer. The third electrode has less resistivity than the second electrode, and includes first conductive sections arranged in a first direction. The light modulator includes pixels, and adjacent pixels are spaced apart by gaps. The arrangement pitch of the first conductive sections in the first direction is a multiple of the arrangement pitch of the gaps in the first direction. The shadows of the first conductive sections generated by the light emitted from the light emitting device are cast onto the gaps.

Projector having a metal electrode on the transparent electrode with gap regions to prevent shadowing

An illumination device includes a light source including plural light emitting devices arranged in a pattern and that generate and guide light, the light emitting devices having tilted gain regions wherein guiding directions of the light are tilted with respect to a perpendicular of output surfaces of the light source, an optical axis conversion device that bends optical axes of the light output from the light source, and a light distribution control device that controls a light distribution angle of the light output from the optical axis conversion device, wherein the light emitting devices are super luminescent diodes, and the light output from the light distribution control device diverge.

Illumination device having improved illumination light symmetricalness and projector having the illumination device

A light emitting apparatus includes a first rod integrator and a second rod integrator supported by a support substrate and a light emitting device disposed between the first rod integrator and the second rod integrator. The light emitting device emits a plurality of light beams to be incident on the first rod integrator and a plurality of light beams to be incident on the second rod integrator. Each of the rod integrators has a light incident surface on which the plurality of light beams are incident, a bent portion that changes the propagating direction of the plurality of incident light beams, and a light exiting surface through which the plurality of light beams mixed with each other exit.

Light emitting apparatus, illuminator, and projector

A light emitting device includes: a first light emission element which emits a first light; a second light emission element which emits a second light; a first reflection surface which reflects the first light; and a second reflection surface which reflects the second light, wherein the first light emission element and the second light emission element are laminated in a first direction and disposed in such positions that the emission direction of the first light and the emission direction of the second light become parallel with each other and that the first light emission element and the second light emission element do not overlap with each other as viewed in the first direction, and the traveling direction of the first light reflected by the first reflection surface and the traveling direction of the second light reflected by the second reflection surface become parallel with each other.

An illumination device includes: a light source which has an emission surface forming area where a plurality of emission surfaces are disposed; a plurality of converging lenses disposed in correspondence with the plural emission surfaces to converge emission lights emitted from the emission surfaces; a first fly-eye lens which divides lights converged by the plural converging lenses into a plurality of partial lights; a second fly-eye lens which converges the plural partial lights; and a condenser lens which stacks the plural partial lights converged by the second fly-eye lens on an illumination receiving area, wherein the plural converging lenses stack the emission lights on the first fly-eye lens.

Illumination device and projection having a plurality of collimating and converging lenses

An illumination device includes: a light source which emits a plurality of emission lights; a first condenser lens which stacks the plural emission lights emitted from the light source; a first fly-eye lens which divides lights stacked by the first condenser lens into a plurality of partial lights; a second fly-eye lens which converges the plural partial lights; and a second condenser lens which stacks the plural partial lights converged by the second fly-eye lens, wherein the first condenser lens stacks the plural emission lights emitted from the light source on the first fly-eye lens, and the second fly-eye lens stacks the plural partial lights on an illumination receiving area.

Illumination device and projector

A light emitting device, having a first area and a second area adjacent to the first area, includes a substrate formed in the first and second areas, a first cladding layer formed above the substrate in the first area, an active layer, having first and second side surfaces, formed above the first cladding layer, a gain area having first and second end surfaces, the first end surface being provided along the second side surface, a second cladding layer formed above the active layer, a guide layer formed above the substrate in the second area, and a core layer, having third and fourth side surfaces, formed above the guide layer. The gain area is angled relative to a first normal direction to the first side surface. The first and second end surfaces are not overlapped each other in the first normal direction.

Light emitting device

Minute structures are obtained by exposing a process target material and changing the shape thereof by relatively shifting a laser beam or electron beam against the process target material and simultaneously repeating irradiation in an intermittent manner. A plurality of minute convex or concave shapes are formed on the process target material by employing a branching element for branching a single beam into a plurality of beams; a parallel element for converting said plurality of beams into beams which respectively advance in parallel; and a condensing element for condensing the plurality of beams to the process target material and generating a plurality of minute spots thereon.

Manufacturing method of microstructure, manufacturing method and manufacturing device of electronic device

The laser patterning device of this invention comprises a turntable on which is placed a processed member, and which rotates the member; a linear slider; a laser serving as a light source; an optical system, mounted on the slider, which condenses the laser light to form a laser spot on a substrate; and an optical modulator which changes the optical intensity of the laser spot. By performing laser patterning of a prescribed pattern on the processed member while moving the optical system mounted on the slider, while rotating the processed member by means of the turntable, a pattern having fine gray scales in the depth direction can be drawn with high precision and in a short amount of time.

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Suwa, Japan

Hiroyasu Kaseya