Koito Manufacturing Company, Ltd.

Michio Tsukamoto

Yusuke Nakada

Masahito Naganawa

Hirohiko Ohshio

Hiroshi Kawashima

Hiroyuki Ishida

Takashi Matsunaga

Kiyoshi Sazuka

Michihiko Hayakawa

Takeshi Ohmi

Shohei Fujiwara

Satoshi Yamamura

Masashi Tatsukawa

Naoki Uchida

Hidetada Tanaka

Shigeyuki Watanabe

Noriko Okada

Shigeo Sawada

Kazuhisa Mochizuki

Yusuke Nakata

An aircraft lamp includes: a lamp outer housing configured by a lamp housing having an opening and a cover attached to the lamp housing in a state where the opening is closed, wherein an internal space is formed as an arrangement space; a light source unit arranged in the arrangement space and having a light source; and a control unit including a control substrate that controls an ON/OFF of the light source, and a shielding plate that shields noise generated in the control substrate. The lamp housing is provided with a unit accommodation portion having a concave shape and an insertion/removal port. The control substrate is configured to be accommodated in and removed from the unit accommodation portion via the insertion/removal port. At least a part of the insertion/removal port is closed by the shielding plate in a state where the control substrate is accommodated in the unit accommodation portion.

Aircraft lamp

A vehicle lamp includes a projection lens and a first light source. Light emitted from the first light source is irradiated forward through the projection lens. The shade blocks a part of light from the first light source toward the projection lens to form a low beam light distribution pattern. The light emitting unit causes light to be incident onto the projection lens to form a high beam supplementary light distribution pattern. The light emitting unit includes a second light source and a transparent member. Light emitted from the second light source is incident on the transparent member. The transparent member emits the incident light from the front end surface thereof. An emission window is formed in the upper surface of the transparent member and in rear of a front edge of the upper surface. The emission window emits the light incident onto the transparent member, toward the projection lens.

Vehicle lamp

Disclosed is a vehicular headlamp which includes a lamp unit placed in a lamp unit outer case constituted by an outer cover and a lamp housing. The lamp unit includes a light emitting diode provided as a light source; a circuit substrate mounted with the light emitting diode and having a connection terminal for supplying power to the light emitting diode; a projection lens configured to project light emitted from the light emitting diode and irradiate the projected light forwardly; and a cover member placed to surround the light emitting diode and include a colored part of which an inner peripheral surface is formed as an incident surface, on which a part of the light emitted from the light emitting diode is incident, and in which a predetermined color other than a yellow color is given to a surface other than the incident surface.

Vehicular headlamp

A vehicular projector headlamp includes: a projection lens; a first LED element and a second LED element that are light sources and that are arranged on opposite sides of an optical axis of the projection lens so as to substantially face each other; a first reflector that has a first reflective surface having a first focal point located at the first LED element and a second focal point located in proximity to a rear focal point of the projection lens; and a second reflector that has a second reflective surface having a first focal point located at the second LED element and a second focal point located in proximity to the rear focal point of the projection lens, wherein the second reflective surface faces the first reflective surface.

Vehicular projector headlamp

Disclosed is a projection lens that is disposed in front of a first semiconductor light emitting device and configured to irradiate light incident from the rear side to the front side. A first reflector reflects a part of the light emitted from the first semiconductor light emitting device to converge on the rear side of the projection lens. A light guide member is disposed across the front side of the projection lens and configured to emit the light incident from the second semiconductor light emitting device to a predetermined direction. A second reflector reflects a part of the light reflected by the first reflector toward the projection lens. The light reflected by the second reflector to be incident on the projection lens is emitted from the projection to avoid the light guide member.

Optical system unit and vehicular lamp

A vehicular lamp has a light source unit having an LED and an optical element that performs light distribution control for directing light from the LED in a predetermined direction, a heat sink to which the light source unit is attached, and a lamp chamber in which the light source unit is disposed. The LED is an LED module formed by installing an LED chip on a power supply circuit board. The LED module is installed on a circuit board installation portion of the heat sink, and an attachment, which has a frame shape a size larger than the LED module and has a circuit board retaining portion at a center open portion of the attachment, is attached and fixed to the heat sink by a fixing member, whereby the LED module is held between the attachment and the circuit board installation portion.

Vehicular lamp

A vehicular headlamp apparatus includes: a lamp body; a translucent cover having a slanted portion; and a lamp unit. A semiconductor light-emitting element is mounted on a mounting surface so that its irradiation axis intersects with lamp unit's optical axis. Reflector's reflective surface reflects light from the semiconductor light-emitting element toward a vehicle front. One end of the reflective surface is located on a vehicle rear side of the light-emitting element. The other end protrudes toward a vehicle front from a front side end of the mounting portion. The reflective surface has a portion protruding toward the vehicle front from the front side end to face the slanted portion. Within a light distribution pattern, rays of light reflected by first area, second area adjacent to the first area and third area on the reflective surface respectively form a horizontal cut-off line, an oblique cut-off line and a diffusion portion.

Vehicular headlamp apparatus including a semiconductor light-emitting element and a reflector

A lamp unit includes a projection lens, a light emitting device disposed such that a light emitting axis of the light emitting device is oriented upward, a reflector disposed to cover light emitted from the light emitting device and to reflect the light toward the projection lens, a first shade configured and disposed to partially block the light reflected by the reflector, and a second shade. The first shade includes a light cutting edge configured to form a cutoff line along an upper edge of a light distribution pattern, and an auxiliary reflecting surface extending rearward from the light cutting edge and configured to partially reflect, toward the projection lens, the light reflected by the reflector. The second shade is arranged to extend from a front edge of the reflector toward the auxiliary reflecting surface.

Vehicle headlamp lamp unit having pluralityof shades

A vehicle lamp, which is configured to irradiate infrared light in a vehicle forward direction, includes: a projection lens disposed along an optical axis extending in a lamp backward and forward direction; and first and second light source units disposed in the rear of the projection lens. The first light source unit includes: a first light emitting element which is disposed in the rear of a rear focal point of the projection lens and emits the infrared light; and a first reflector which reflects the infrared light toward the optical axis in a lamp forward direction. An infrared light distribution pattern is formed by the infrared light which is reflected by the first reflector to pass through the projection lens. The second light source unit includes: a second light emitting element which is disposed in the rear of the rear focal point of the projection lens and emits visible light; and a second reflector which reflects the visible light toward the optical axis in a lamp forward direction. A visible light distribution pattern is formed by the visible light which is reflected by the second reflector to pass through the projection lens. The visible light distribution pattern overlaps with the infrared light distribution pattern. When the first light source unit is turned on, the second light source unit is turned on simultaneously with the first light source.

A vehicular lamp forms a low-beam distribution pattern by combining light radiated from a first unit and a second unit. A brightness decreasing element is provided on a reflective surface of a first main reflector in a sub-unit of the first unit. Thus, for the low-beam distribution pattern formed by the first unit and the second unit, among a peripheral end portion of a cut-off line forming pattern formed by the sub unit, a low luminance portion with a partially reduced brightness is formed at the border of both right and left end sides that upwardly overlap with a portion of a diffusion area forming pattern.

A vehicular headlamp includes a light source for illuminating light from the vehicular headlamp in an illumination direction; a swivel mechanism capable of changing the illumination direction horizontally rightward and leftward; a leveling mechanism capable of changing the illumination direction vertically upward and downward; and electronic control unit capable of controlling the swivel mechanism and the leveling mechanism so as to change the illumination direction toward an oncoming vehicle lane side during linear travel of a vehicle. A method of illumination control for a vehicular headlamp includes illuminating light from the vehicular headlamp in an illumination direction; and changing the illumination direction toward an oncoming vehicle lane side during linear travel of a vehicle.

A vehicle lamp includes a plurality of semiconductor light emitting devices and a reflector for reflecting light emitted from the semiconductor light emitting devices toward a front side of the vehicle lamp. The reflector is formed into a shape whose front area is open. A plate-like partition member is disposed inside the reflector to partition the reflector into a plurality of reflecting areas. The semiconductor light emitting devices are mounted on the plate-like partition member in respective reflecting areas such that optical axes of the semiconductor light emitting devices are directed in a direction substantially perpendicular to a lamp optical axis.

Lamp unit of vehicle headlamp

A vehicle headlampis provided with an upper stage light source unit, a middle stage light source unit, a lower stage light source unit. The upper stage light source unit, the middle stage light source unit, the lower stage light source unitare provided at a lamp bodyconstituting a lamp member by way of a support member, and a light distribution pattern for low beam is formed on a front side of a vehicle by overlapping light from the respective light source units. The middle stage light source unitis supported to be able to change the optical axis independently from the other light source units

Vehicle lamp including optical axis variable light source

A vehicle headlamp system and a vehicle headlamp are provided. The headlamp system includes a plurality of headlamps, one headlamp disposed on each of the right and left sides of a front end portion of a vehicle. Each of the headlamps includes a lamp body having an opening portion, a transparent cover attached to the opening portion to form a lamp chamber, and a plurality of lamp units arranged inside the lamp chamber along a width direction of the vehicle. An outer side portion of the transparent cover extends toward a rear side of the vehicle. Each of the lamp units includes a light emitting element disposed such that a light emitting surface thereof faces an inner side in the width direction of the vehicle, and a reflector disposed on an inner side of the light emitting element to forwardly reflect light from the corresponding light emitting element.

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Shizuoka, Japan

Michio Tsukamoto