Patent application number | Description | Published |
20080225544 | LAMP UNIT OF VEHICLE HEADLAMP - 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. | 09-18-2008 |
20080239740 | LAMP UNIT OF VEHICLE HEADLAMP - A lamp unit of a vehicle lamp includes a projection lens arranged on an optical axis extending in the longitudinal direction of a vehicle, a light-emitting element arranged so as to face upward behind a rear focal point of the projection lens and in the vicinity of the optical axis, and a reflector arranged so as to cover the light-emitting element from above and to reflect the light from the light-emitting element forward toward the optical axis. The light-emitting element has a plurality of light-emitting chips arranged so as to be adjacent to each other in a vehicle width direction. A mirror member is provided between the reflector and the projection lens. The mirror member includes an upward reflecting surface that upward reflects a portion of the reflected light from the reflector. A diffusing and reflecting portion that diffuses and reflects the reflected light from the reflector is formed in the upward reflecting surface so as to bridge over the optical axis in the vehicle width direction. | 10-02-2008 |
20080239741 | LAMP UNIT OF VEHICLE HEADLAMP - A lamp unit of a vehicle lamp includes a projection lens arranged on an optical axis extending in the longitudinal direction of a vehicle, a light-emitting element arranged so as to face upward behind a rear focal point of the projection lens and in the vicinity of the optical axis, and a reflector arranged so as to cover the light-emitting element from above and to reflect the light from the light-emitting element forward toward the optical axis. A mirror member is provided between the reflector and the projection lens. The mirror member includes an upward reflecting surface that upward reflects a portion of the reflected light from the reflector, and a front end edge formed so as to pass through the rear focal point of the projection lens. A region of the upward reflecting surface located nearer a self-lane side than the optical axis is constituted with a horizontal plane including the optical axis. A shielding projection that shields the reflected light from the reflector deflected by the horizontal plane is formed in a position of the horizontal plane that is apart from the front end edge of the upward reflecting surface to a rear side. | 10-02-2008 |
20080239742 | LAMP UNIT OF VEHICLE HEADLAMP - A lamp unit of a vehicle lamp includes a projection lens arranged on an optical axis extending in the longitudinal direction of a vehicle, a light-emitting element arranged so as to face upward behind a rear focal point of the projection lens and in the vicinity of the optical axis, a reflector arranged so as to cover the light-emitting element from above and to reflect light from the light-emitting element forward toward the optical axis, and a mirror member disposed between the reflector and the projection lens. The mirror member includes an upward reflecting surface that upward reflects a portion of the reflected light from the reflector, and a front end edge formed so as to pass through the rear focal point of the projection lens. A region of the upward reflecting surface located nearer a self-lane side than the optical axis includes a first horizontal plane including the optical axis. A region of the upward reflecting surface located nearer an opposite-lane side than the optical axis includes a middle slope extending obliquely downward from the optical axis and a second horizontal plane extending parallel to the first horizontal plane from a lower end edge of the middle slope. A diffusing and reflecting portion that diffuses and reflects the reflected light from the reflector is formed in a position of the middle slope that is apart from the front end edge of the upward reflecting surface to a rear side. | 10-02-2008 |
20080239744 | VEHICULAR LAMP - 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. | 10-02-2008 |
20080247185 | LAMP UNIT FOR VEHICLE HEADLAMP - A lamp unit for a headlamp of a vehicle includes a projection lens, a light emitting device disposed on a rear side of the projection lens, a reflector, and a mirror member having an upwardly reflecting surface. The reflector forwardly reflects light from the light emitting device toward an optical axis, and the upwardly reflecting surface upwardly reflects part of the light reflected by the reflector. The upwardly reflecting surface includes a first horizontal surface disposed on a self-lane side of the optical axis, a second horizontal surface disposed on an opposing-lane side of the optical axis, and an intermediate slope surface connecting the first and second horizontal surfaces. The intermediate slope surface includes a front slope surface and a rear slope surface on the rear side of the front slope surface, and the rear slope surface is curved. | 10-09-2008 |
20080253141 | LAMP UNIT FOR VEHICLE - A lamp unit includes a projection lens disposed on an optical axis, a light source disposed on a rear side of a rear focal point of the projection lens, a reflector configured to forwardly reflect light emitted from the light source toward the optical axis, and a shade configured to shield a part of the light reflected by the reflector. The lamp unit is configured to form a light distribution pattern having a cutoff line. An incidence plane of the projection lens includes a vertical diffusing portion which regulates the cutoff line. The vertical diffusing portion includes a plurality of lens elements extending substantially parallel to a horizontal portion of the upper edge of the shade. A vertical section of each of the lens elements is convex or concave with respect to a reference surface of the incidence plane. | 10-16-2008 |
20080298077 | VEHICULAR HEADLAMP - 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. | 12-04-2008 |
20090196060 | VEHICLE LAMP - 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. | 08-06-2009 |
20120007506 | 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. | 01-12-2012 |
20130314934 | 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. | 11-28-2013 |