5670 results about "Headlamp" patented technology

A vehicle headlight including a common light distribution unit and a variable light distribution unit and a headlight system including the headlight can form a common light distribution pattern and a variable light distribution pattern using the common and the variable light distribution units. The variable distribution unit can include a light source, a phosphor panel, a mirror reflecting/scanning light emitted from the light source onto the phosphor panel and a projector lens projecting the scanning light adjacent the common light distribution pattern. The headlight system can include a front sensor detecting a surrounding condition, and can control the common and the variable light distribution units to form an optimum light distribution pattern in accordance with surrounding conditions. Thus, the disclosed subject matter can provide a headlight system including a headlight that can form an optimum light distribution pattern in accordance with surrounding conditions and can have a simple structure.

A system for controlling at least one exterior vehicle light of a controlled vehicle includes an array of sensors and a control unit. The array of sensors are capable of detecting light levels in front of the controlled vehicle. The control unit is in communication with the array of sensors and the at least one exterior vehicle light and determines a distance and an angle from the at least one exterior vehicle light of the controlled vehicle to a leading vehicle. The control unit is operable to control operation of the at least one exterior vehicle light as a function of the distance and angle, based on the output from the array of sensors, and prevent the at least one exterior vehicle light from providing a disruptive glare to a driver of the leading vehicle.

A system and method of automatically controlling vehicle headlamps including an image sensor and a controller to generate headlamp control signals.

A vehicle headlamp includes a projector-type lamp unit that performs two types of light distribution. The lamp unit is configured with a projection lens disposed on an optical axis Ax extending in an longitudinal direction of a vehicle, and a first light-source unit and a second light-source unit, both disposed to the rear of the projection lens. A low-beam light distribution pattern having sharp cut-off lines at an upper end portion is formed upon illumination of the first light-source unit. An additional high-beam light distribution pattern spreading upward from the cut-off lines is additionally formed upon illumination of the second light-source unit. Accordingly, a high-beam light distribution pattern is formed.

A vehicle headlamp control method and apparatus includes providing an imaging sensor that senses light in spatially separated regions of a field of view forward of the vehicle. Light levels sensed in individual regions of the field of view are evaluated in order to identify light sources of interest, such as oncoming headlights and leading taillights. The vehicle's headlights are controlled in response to identifying such particular light sources or absence of such light sources. Spectral signatures of light sources may be examined in order to determine if the spectral signature matches that of particular light sources such as the spectral signatures of headlights or taillights. Sensed light levels may also be evaluated for their spatial distribution in order to identify light sources of interest.

A lamp unit of a vehicle headlamp characterized in a lamp unit of a vehicle headlamp includes a projecting lens arranged on an optical axis extended in a front and rear direction of a vehicle, a first light emitting element arranged on a rear side of a rear side focal point of the projecting lens, and a reflector for reflecting light from the first light emitting element to a front side to be proximate to an optical axis. A vicinity of a rear side focal face of the projecting lens is arranged with a plurality of second light emitting elements for emitting light to the projecting lens.

A low beam light distribution pattern is formed by turning on a first light source unit and a high beam light distribution pattern is formed by additionally turning on a second light source unit. The second reflector of the second light source unit has reflecting faces of vertical cross-sectional shapes formed by two types of ellipses whose first focal point is on a center of emission of a second light-emitting element and whose second focal points are respectively positioned on points A, B. The additional lens whose rear focal points are on the second focal points A, B is arranged on a circumference of a projection lens. When the second light source unit is turned on, a high beam additional light distribution pattern is formed that vertically strides over the cutoff line of the low beam light distribution pattern.

The instant invention provides a convertible lighting device featuring a battery housing and a detachable lamp assembly. The lighting device can be operated in flashlight and headlamp modes.

A portable personal headlamp utilizes an array of light-emitting diodes on the front face of a circuit board. Arc-shaped projections on the front face of a finned heat sink are in heat-conducting relationship with printed conductors on the rear face of the circuit board, which partially surround one lead of each light-emitting diode.

A projector type vehicle headlamp comprises a reflector, a light source, a projection lens, a rotational shade to shield part of light reflected on the reflector so as to be directed towards the projection lens and a motor for driving the rotational shade based on a light distribution switching over operation. In the headlamp, a high beam corresponding light shielding plate and an another beam corresponding light shielding plates are disposed on the rotational shade on both sides of a low beam corresponding light shielding plate, so that the light distributions are attempted to be switched over speedily between the low beam and the another beams and the generation of glare is attempted to be prevented.

A light module of a motor vehicle generates a spot distribution of a high-beam-light distribution formed by superimposition of the spot distribution and a base distribution generated by at least one other module. The light module comprises a plurality of separately controllable sub-modules that generate a plurality of stripe-shaped segments of the spot distribution that supplement it. Also, a headlight generates the high-beam-light distribution and comprises the light module. Furthermore, a headlight system comprises a pair of the headlights disposed in a front region toward sides of the vehicle and each of which generates the high-beam-light distribution. The headlights include corresponding light modules that generate stripe-shaped segments of left and right sides, respectively, of the spot distribution such that the stripe-shaped segments of the light modules of the headlights supplement the spot distribution or are at least partially superimposed thereon.

A plurality of lighting units using light emitting diodes as light sources is accommodated in a lamp housing in such a state as to be supported on a common metallic support member provided tiltably. When a part or all of the lighting units are turned on, the light emitting diodes generate heat with a light emission. These light emitting diodes are supported on the common metallic support member. Also in the case in which any of the lighting units is turned on, therefore, the heat generated by the light emitting diodes is moved to the metallic support member having a large heat capacity through boards and light source support blocks by a heat conducting function. Consequently, a rise in the temperatures of the light emitting diodes can be suppressed.

An automotive discharge bulb having a light emitting tube includes a ceramic tube with paired electrodes oppositely placed, and contains a light emitting material and starting rare gas. A transversal section of the ceramic tube is longitudinally elongated. Because the capacity of an enclosed space of the ceramic tube is small, after discharging begins, the enclosed space temperature increases. Consequently, the ceramic tube has a good luminous flux rising characteristic. Because of the small surface area of the ceramic tube, the load imposed on the wall surface increases. Consequently, the ceramic tube has good luminous efficiency. In the ceramic tube having a longitudinally elongated transversal section, an arc generated into an upwardly convex shape and the tube wall do not make contact. Thermal shock resistance required of the ceramic tube is alleviated, durability is enhanced, and the ceramic tube is made of a ceramic material hitherto unusable.

A headlight module comprising at least one phosphor which can be excited to emit light by means of electromagnetic radiation; at least one radiation source for exciting the at least one phosphor; at least one carrier device for the at least one phosphor; and at least one beam directing device which is disposed such that it directs electromagnetic radiation emitted by the at least one radiation source onto the at least one phosphor.

Information is displayed by irradiating a visible light on a specific position based on at least one of vehicle state information, vehicle surrounding information, and vehicle interior information. For example, the visible light is irradiated on a target switch based on signals indicating an on/off state of a headlamp operation switch and an on/off state of a key switch. A user 5 can easily confirm the target switch and unerringly operate the target switch. A visible light irradiator 6 is arranged in a vehicle compartment and irradiates the visible light to display information in the vehicle compartment. The information can be provided for the user 5 in a novel manner.