Stanley Electric Co., Ltd

Yasushi Kita

Takako Kimura

Wataru Nakashima

Takashi Sato

Norikatsu Myojin

Kouki Kudo

Akihisa Kumakura

Shuto Oyama

Shinichi Kojima

Hidetaka Okada

Masafumi Ohno

Takeshi Waragaya

Takako Minoda

Satoshi Sakai

Ryotaro Owada

Mitsuhiro Uchida

Susumu Nakamura

Mitsuo Yamada

Shoko Kawanobe

Naoko Takenobu

Teruo Koike

Yasushi Yatsuda

Takahiro Watanabe

Chika Fujiwara

Naoya Iwasaki

Ayumi Yamaguchi

Daisaku Yamaguchi

To improve pedestrian visibility. Provided is a headlight controller connectable to a first headlight and a second headlight spaced apart in a vehicle width direction at the front of the vehicle, the headlight controller including: a rainfall amount detection means installed in the vehicle; and a controller installed in the vehicle, where the controller is connected to the rainfall amount detection means, and the controller carries out control such that when rainfall amount detected by the rainfall amount detection means is equal to or more than a predetermined value, irradiation light from the first headlight becomes relatively darker than irradiation light from the second headlight.

Headlight controller, headlight control method, and headlight system having a rainfall amount detection means

To reduce a sense of discomfort during sequential blinking. A lighting controller for a vehicular lamp to control lighting of the vehicular lamp, where the lighting controller is configured to control so that a light emitting region of the vehicular lamp is repeatedly lighted on and off with a first luminance and where, during the time when the light emitting region is lighted on, at a partial region of the light emitting region, one or more bright spots are set with a second luminance that is higher than the first luminance to be moved within the light emitting region, or during the time when the light emitting region is lighted on, at the partial region of the light emitting region, one or more dark spots are set with a third luminance that is lower than the first luminance to be moved within the light emitting region.

Lighting controller for vehicular lamp, vehicular lamp system

Provided is a vehicle signal light in which a person with protanopia (p-type color vision deficiency) can perceive whether or not the vehicle signal light, e.g., a stop lamp, a tail lamp, or the like, is turned on. The vehicle signal light includes a first light source configured to emit red light and a second light source configured to emit amber light. The first light source and the second light source are simultaneously turned on and are configured to emit light with a higher luminous intensity in response to a braking operation, and the emission intensity of the first light source is higher than that of the second light source.

Vehicle signal light

A vehicular lamp can enhance the impression of the direction indication due to the movement of light when performing sequential winker controls by sequentially turning off a plurality of light-emitting parts. A lighting control device for performing lighting control of the vehicular lamp including the plurality of light-emitting parts, includes processor circuitry configured to perform controls to repeat a lighting cycle including turning on the plurality of light-emitting parts and maintaining a lighting state of all the light-emitting parts, and then sequentially turning off the light-emitting parts in a predetermined direction with a time difference and maintaining a lights-out state of all the light-emitting parts in such a manner that a rise time from the lights-out state to the lighting state during energizing the light-emitting parts is made longer than a fall time from when the lighting state to the lights-out state during deenergizing the light-emitting parts.

Lighting control device and method of vehicular lamp, and vehicular lamp system

A lighting control device is capable of further enhancing the impression of direction indication due to the movement of light when performing sequential winker control. The lighting control device performs lighting control of a vehicular lamp including a plurality of light-emitting parts, and includes processor circuitry configured to perform controls to repeat a lighting cycle including turning on the plurality of light-emitting parts that have been turned off and maintaining a lighting state of all the light emitting parts, then sequentially dimming at least two or more of the light-emitting parts in a predetermined direction with a time difference, and thereafter turning off the plurality of light-emitting parts and maintaining a lights-out state of all the light-emitting parts.

A control device for vehicle headlamps configured to control illumination with light using headlamps of a vehicle, the control device for vehicle headlamps includes a determination part configured to determine whether the vehicle will collide with an object detected by an object detection part configured to detect an object, and an illumination controller configured to illuminate a region corresponding to the object that has been determined to collide with the vehicle by the determination part with a marking light and configured to illuminate a region around the region corresponding to the object with a background light in which a light intensity level thereof is decreased when a light intensity level of the marking light is increased, by using the headlamps.

Control device for vehicle headlamps

An illumination device capable of correcting a deviation of a drawing position when drawing is performed at a position deviated from a designed target position on a road surface is provided. The illumination device can include: a first irradiation unit configured to irradiate light having a first light distribution pattern; and a second irradiation unit configured to irradiate light having a second light distribution pattern different from the first light distribution pattern, wherein at least one of the first light distribution pattern and the second light distribution pattern includes a main pattern and an auxiliary pattern configured to have an assisting function.

Light pattern drawing device for aligning illuminated areas outside of vehicle

A control device for a vehicle headlight includes a motion information acquisition part that acquires information of a motion of at least a part of a driver in the vehicle, an attribute decision part that determines attribute of the driver based on the information acquired by the motion information acquisition part, and a light distribution controller that controls a light distribution of the vehicle headlight based on the attribute determined by the attribute decision part.

Control device for vehicle headlight

Light emitted from a light source having an S/P ratio being 2.0 or more is projected to a peripheral area in front of a vehicle body, and thereby an earlier awareness with the peripheral vision under dark environment (e.g., during nighttime driving) can be facilitated.

Vehicle headlight

A vehicle headlight can facilitate an earlier awareness with peripheral vision under dark environment (such as during nighttime, tunnel, or adverse weather driving). The light source can include a plurality of white LEDs. The plurality of white LEDs include a first white LED and a second white LED. The first white LED has an S/P ratio, which is represented by (S(&#x3bb;)*V'(&#x3bb;))/(S(&#x3bb;)*V(&#x3bb;)) in which S(&#x3bb;) is a spectrum of the first light source, V&#x2032;(&#x3bb;) is a relative luminosity factor in scotopic vision, and V(&#x3bb;) is a relative luminosity factor in photopic vision, lower than that of the second white LED.

A vehicle light can include a light emitting diode (LED) serving as a light source and an optical system for controlling a light distribution pattern of the light beams from the LED light source utilizing a light guide (such as a lens body having an inner reflecting surface). The vehicle light can project illumination light with a low beam light distribution pattern. The vehicle light can include an LED light source and a lens body serving as a light guide. The lens body can include a light incident surface, a reflecting surface, and a light exiting surface. The LED light source can have a rearmost end light emitting point from which light beams are emitted to form a bright-dark boundary line. Among the light beams, perpendicularly incident light beams not subjected to refraction can be projected toward the bright-dark boundary line while obliquely incident light beams that are subjected to refraction can be corrected to be directed in a lower angular direction than the bright-dark boundary line and to be mixed with the other light beams, thereby preventing color shading of illumination light from the vehicle light.

Vehicle light

A vehicle light can include an optical system for controlling a light distribution pattern, and the optical system is a light guide (being a lens body having an inner reflecting surface). The vehicle light can project illumination light with a low bean light distribution pattern. The vehicle light can include an LED light source and a lens body serving as a light guide. The lens body can include a light incident surface, a reflecting surface, and a light exiting surface. The LED light source can have a rearmost end light emitting point from which light beams are emitted to form a bright-dark boundary line. Among the light beams, perpendicularly incident light beams not subjected to refraction can be projected toward the bright-dark boundary line while obliquely incident light beams being subjected to refraction can be corrected to be directed in a lower angular direction than the bright-dark boundary line to be mixed with the other light beams emitted from other light emitting points of the LED light source, thereby preventing the color shading of illumination light.

A vehicle light can improve the visibility (noticeability) for pedestrians, roadside obstructs, other vehicles and the like in actual traffic environments. The vehicle light can be configured to project light beams with a predetermined white color, and can include a light source with a color temperature range of 4500 K to 7000 K. The light source emits light beams including four color light beams represented by four coordinate values of predicted colors including red, green, blue and yellow in the a* b* coordinate system corresponding to the CIE 1976 L*a*b* color space. The four coordinate values in the a* b* coordinate system can be encompassed by respective circle areas having a radius of, for example, 5, and each having center coordinate values of (41.7, 20.9) for red, (&#x2212;39.5, 14.3) for green, (8.8, &#x2212;29.9) for blue and (&#x2212;10.4, 74.2) for yellow, for example.

Vehicle light with values corresponding to the CIE color space

A vehicle cornering light can improve the visibility in a diagonally front area of the vehicle without increasing the luminous intensity of the cornering light (or light source thereof). The cornering light that is provided at or near a front corner of a vehicle and is configured to emit light for illuminating a diagonally front area of the vehicle can include a light source that can emit light with a color temperature of from 3700K to 7000K. The cornering light can emit light for illuminating a lateral area ranging from 60&#xb0; to 75&#xb0; with respect to the longitudinal direction of the vehicle. The light source can be composed of a first light source configured to emit light for illuminating an area partly overlapping, or adjacent to, an illumination area of the headlight of the vehicle, and a second light source configured to emit light for illuminating an area partly overlapping, or adjacent to, the illumination area of the first light source. The color temperatures of the headlight, the first light source, and the second light source are sequentially changed to be higher in this respective order.

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Tokyo, Japan

Yasushi Kita