Reflector Patents (Class 362/514)
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Publication number: 20040090792Abstract: A headlamp assembly including a simplified adjusting mechanism for adjusting the aim of the headlamp. The mechanism includes a gear screw that is snap fit into the headlamp housing with or without an adjuster housing. The gear screw has an O-ring in radial compression so as to ensure a good seal.Type: ApplicationFiled: November 12, 2002Publication date: May 13, 2004Inventor: John Burton
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Patent number: 6685347Abstract: A gobo projector for projecting an image onto a paved surface below a vehicle including: a cylindrical body; a light source and reflector at a first end of the body for casting a beam of light toward the opposite end of the body; and a window housing attached to the opposite end of the body. The window housing includes a window opening covered with a transparent material in an airtight manner and a pivotal mirror adapted to reflect the beam of light outward through the window opening. The gobo projector further includes a pair of lenses, interposed between the light source and the mirror, slidably mounted in the housing for adjusting the size and focus of the projected image, a slot for receiving a gobo and a heat shield between the slot and the light source to protect the gobo.Type: GrantFiled: September 26, 2001Date of Patent: February 3, 2004Inventor: Glen A. Grutze
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Publication number: 20030231509Abstract: A vehicular lamp including a lamp chamber formed by a lamp body and a transparent outer lens covering the front opening of the lamp body, a light source installed in the lamp chamber, a reflecting surface formed in the lamp chamber and reflects light from the light source to radiate light in the forward direction of the lamp body, and an inner lens disposed between the light source and the outer lens, the inner having a refracting step, and the refracting step having a refracting surface that refracts light, which is from the front of the lamp body and is directly incident to the inner lens, in a direction away from the light source.Type: ApplicationFiled: April 18, 2003Publication date: December 18, 2003Applicant: Koito Manufacturing Co., Ltd.Inventor: Kazunori Natsume
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Patent number: 6663270Abstract: A vehicle lamp mounted on a vehicle body which can lean to one side at the time of turning, i.e., going around a curve, moving circularly, or the like. The lamp can include a first ellipse group reflecting surface having a movable part and an opening part, and a second ellipse group reflecting surface corresponding to an area covering a moving range of the opening part. The movable part of the first ellipse group reflecting surface can move by a drive unit to form a main light distribution that is kept in a substantially horizontal position. Light rays that pass through the opening part reach the second ellipse group reflecting surface and are reflected and illuminate an area ahead of the vehicle body when it leans to one side.Type: GrantFiled: August 23, 2002Date of Patent: December 16, 2003Assignee: Stanley Electric Co., Ltd.Inventors: Hitoshi Taniuchi, Kouichi Nagano
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Patent number: 6648494Abstract: A vehicle lamp includes an optical means whereof the direction of irradiation is change by rotation, a motor, an output shaft for driving the optical means, and a rotation transmitting mechanism for transmitting rotation from the motor to the output shaft. The motor, the output shaft, and the rotation transmitting mechanism are accommodated in the case body, and a revolving shaft of the motor is supported by the case body.Type: GrantFiled: November 21, 2001Date of Patent: November 18, 2003Assignee: Koito Manufacturing Co., Ltd.Inventors: Atsushi Sugimoto, Keiichi Tajima, Kazuma Mochizuki, Tsutomu Takiguchi
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Publication number: 20030202359Abstract: The invention proposes an illumination module (10) producing an illumination beam with cutoff, comprising, arranged from back to front along a horizontal optical axis (A-A), an elliptical reflector (12) which delimits a volume of reflection and which has an elliptical surface of reflection (18, 20), at least one light source (14) which is arranged in the vicinity of a first focus (F1) of the reflector (12), and a convergent lens (16) whose focal plane is arranged in the vicinity of the second focus (F2) of the reflector (12), characterised in that the reflector (12) has a horizontal flat surface (22), the upper face (24) of which is reflective, which delimits vertically towards the bottom the volume of reflection, and in that the flat surface (22) of the reflector (12) has a cutoff edge (28) which is arranged in the vicinity of the second focus (F2) of the reflector (12).Type: ApplicationFiled: April 24, 2003Publication date: October 30, 2003Inventor: Pierre Albou
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Publication number: 20030202360Abstract: A movable reflector with integrally molded bulb assembly retention features. The movable reflector comprises a bore at the center of the reflector for receiving a bulb assembly and retention features integrally molded on the rear side of the reflector to retain the bulb assembly. The movable reflector further comprises mold voids spaced around the bore adjacent to the retention features and extending through the movable reflector so that the structure of the retention features and the movable reflector may be molded in one injection molding step without additional tool movement.Type: ApplicationFiled: April 24, 2002Publication date: October 30, 2003Applicant: Guide CorporationInventors: Kenneth L. Trimpe, Joseph C. Ballman
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Patent number: 6634773Abstract: An adaptive front-lighting system includes a lamp deflection angle controlling means for controlling a deflection angle of an auxiliary lamp that is attached to a main lamp corresponding to a traveling state of a vehicle. The system is provided with vehicle halting state detecting means for detecting a halted state in which the vehicle is halted or traveling at a very low speed, and illumination controlling means for turning off or dimming an auxiliary lamp when the halted state is continued for more than a prescribed time period. When the vehicle is halted with the auxiliary lamp deflected, and the halted state is continued for more than the prescribed time period, the auxiliary lamp is turned off or dimmed, and thus other cars and pedestrians are prevented from being dazzled by the auxiliary lamp, and the trailing car may be prevented from having a sense of insecurity.Type: GrantFiled: May 1, 2002Date of Patent: October 21, 2003Assignee: Koito Manufacturing Co., Ltd.Inventor: Toshihisa Hayami
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Publication number: 20030189822Abstract: A headlight for giving an offset beam or verge beam, for illuminating the verge of the road, is of the type comprising, considered from the rear towards the front along a horizontal reference axis, an elliptical reflector, a light source, and a convergent lens element. The reflector and light source are mounted for pivoting movement, thereby defining a movable optical axis with respect to the longitudinal axis.Type: ApplicationFiled: March 21, 2003Publication date: October 9, 2003Inventors: Antoine De Lamberterie, Jean Matthieu Tourenq
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Patent number: 6626565Abstract: A vehicle headlamp having a lamp unit that emits a beam in a low beam light distribution pattern which includes a hot zone, the lamp unit being formed by a lamp unit main body and a pair of secondary reflectors provided on both sides of the lamp unit main body. The lamp unit main body emits, via a main reflector, a beam that covers a wide area with the base light distribution pattern; and the secondary reflectors, installed so as to swing horizontally with respect to the lamp unit main body, emit a beam that has light distribution patterns forming the hot zone. The secondary reflectors swing and move the position of the hot zone to the right or left, thus illuminating the road ahead even when the vehicle is running on a curved road with the base light distribution pattern kept facing the vehicle front direction.Type: GrantFiled: January 15, 2002Date of Patent: September 30, 2003Assignee: Koito Manufacturing Co., Ltd.Inventor: Hiroyuki Ishida
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Publication number: 20030169597Abstract: A vehicle headlamp including a reflector installed so as to be tiltable by an aiming mechanism installed in the lamp body. The aiming screw of the aiming mechanism has a rearward-extending portion that extends out of the lamp body, and a crown gear is attached to an area near the end of the rearward-extending portion so as to be spaced apart from a screw supporting wall of the lamp body that supports the middle portion of the aiming screw. An expanded-out wall that functions as a screwdriver guide for supporting a screwdriver that is used to rotate the crown gear is provided above the screw supporting wall. The end of the rearward-extending portion of the aiming screw is supported by a bracket that is installed near the screw supporting wall.Type: ApplicationFiled: February 11, 2003Publication date: September 11, 2003Applicant: Koito Manufacturing Co., Ltd.Inventors: Hideki Tanaka, Masayoshi Kuroda
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Publication number: 20030156424Abstract: A gobo projector for projecting an image onto a paved surface below a vehicle including: a cylindrical body; a light source and reflector at a first end of the body for casting a beam of light toward the opposite end of the body; and a window housing attached to the opposite end of the body. The window housing includes a window opening covered with a transparent material in an airtight manner and a pivotal mirror adapted to reflect the beam of light outward through the window opening. The gobo projector further includes a pair of lenses, interposed between the light source and the mirror, slidably mounted in the housing for adjusting the size and focus of the projected image, a slot for receiving a gobo and a heat shield between the slot and the light source to protect the gobo.Type: ApplicationFiled: September 26, 2001Publication date: August 21, 2003Inventor: Glen A. Grutze
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Patent number: 6607294Abstract: A headlamp in which a right elliptic reflecting surface and a left elliptic reflecting surface are provided on a position toward an upper front portion of the bulb, a right parabolic reflecting surface is provided on a position toward a right lower portion of said main reflecting surface, and a left parabolic reflecting surface is provided on a position toward a left lower portion of said main reflecting surface, whereby waste light can be recovered and used as irradiating light. A headlamp in which the elliptic reflecting surfaces which capture light emitted upwardly and forwardly from the bulb and parabolic reflecting surfaces which reflect said light in a desired direction are provided. A light-distribution varying means is provided in the optical path of the parabolic reflecting surfaces, whereby it becomes possible to switch between light distributions.Type: GrantFiled: October 5, 2001Date of Patent: August 19, 2003Assignee: Stanley Electric Co., Ltd.Inventor: Hitoshi Taniuchi
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Publication number: 20030117808Abstract: In a vehicular lamp system for an automotive vehicle, a first reflector (11201) equipped with a light source, a second reflector (11202) enabled to deflect a reflection direction thereof toward a vehicular turn direction independently of the first reflector, and a driving section (2) that operatively performs a deflection drive for the first and second reflectors are provided. A controller (3) controls the driving section(s) on the basis of a vehicular velocity detected by a vehicular velocity detector (6) and a steering angle detected by a vehicular steering angle detector (5) in such a manner that the second reflector is deflected toward the vehicular turn direction according to the detected steering angle when the detected vehicular velocity falls in an extremely low vehicular velocity range and that the first reflector is deflected toward the vehicular turn direction according to the steering angle when the detected vehicular velocity falls in a high vehicular velocity range.Type: ApplicationFiled: December 12, 2002Publication date: June 26, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Kinya Iwamoto, Kiyotaka Ozaki, Kenjou Umezaki
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Patent number: 6578995Abstract: A lower reflector (3), disposed in a opening (23) of an upper reflector (2) to reflect conventionally unused light, is rotatable relative to the upper reflector (2), thereby changing a dispersed light-distribution pattern (WP) with respect to a fixed reference light-distribution pattern (LP), with an improvement in visibility when the vehicle negotiates a curve.Type: GrantFiled: December 4, 2000Date of Patent: June 17, 2003Assignee: Ichikoh Industries, Ltd.Inventor: Yasufumi Suzuki
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Patent number: 6565237Abstract: A lamp assembly for a vehicle includes an inner casing, a lamp socket located within the casing for positioning a light bulb, and a pivot support mounted within the casing and supporting the lamp socket. The support includes a hinge member engaging a part of the socket such that the socket is pivotable upwards and downwards about the hinge member. A vibration absorber is connected between the socket and the casing for damping upwards and downwards movement of the socket when a vehicle on which the lamp is mounted moves.Type: GrantFiled: July 20, 2001Date of Patent: May 20, 2003Inventor: Lun Cheung Leung
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Patent number: 6565246Abstract: A vehicular head lamp enables rotation of an upper reflector (1) relative to an intermediate reflector (2), thereby changing a dispersed light-distribution pattern (WP) with respect to a fixed reference light-distribution pattern (LP and HP). By causing a lower reflector (3) to rotate relative to the intermediate reflector (2), a collimated light-distribution pattern (SP) is changed with respect to the reference light-distribution patterns (LP and HP). The result of this arrangement is an improvement in visibility when the vehicle negotiates a curve.Type: GrantFiled: December 4, 2000Date of Patent: May 20, 2003Assignee: Ichikoh Industries, Ltd.Inventors: Yasufumi Suzuki, Hirokazu Yoneyama, Takayuki Kawamura
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Publication number: 20030090905Abstract: In a headlamp comprising low beam irradiating means 21a and 23, there are provided main beam irradiating means 31a and 33, light distribution switching means 50 for switching a low beam and a main beam, abnormality detecting means (a light distribution switching circuit) 50 for detecting an abnormal situation in which a proper low beam cannot be formed, and optical axis tilting means 40 for vertically tilting an optical axis L31 of at least a main beam, and in the case in which the abnormality detecting means (the light distribution switching circuit) 50 detects an abnormality, a light distribution is switched into a main beam by the light distribution switching circuit 50 and the optical axis L31 of the main beam is turned downward by the optical axis tilting means 40.Type: ApplicationFiled: October 29, 2002Publication date: May 15, 2003Inventors: Hideki Uchida, Makoto Izawa
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Patent number: 6550948Abstract: Disclosed is an vertically aimable motor vehicle lamp of a one-piece construction. The lamp includes a housing and mounting bracket joined by at least one integral living hinge positioned at the substantial side of the housing at the housing and bracket interface. The integral living hinges define a line of weakness between them about which the housing is pivotable. The housing includes an integral tab extending radially outwardly from the housing and adjacent to the front of the housing. The integral tab is engaged and operable by a vertical-direction adjuster. Further, the one-piece bracket and housing are suitable for manufacture via injection molding and may, because they are a unitary element, be molded in a single injection.Type: GrantFiled: November 6, 2000Date of Patent: April 22, 2003Assignee: Guide CorporationInventors: Nova K. Filbrun, Kenneth L. Trimpe
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Publication number: 20030067780Abstract: The lighting directions of a plurality of lamps RL and LL are controlled independently or integrally corresponding to a running condition. When a vehicle changes a running direction, the direction of the optical axis of one of the lamps is deflected earlier in the running direction and the direction of the optical axis of the other lamp is maintained in a straight running direction in a running condition in which other cars or obstacles might be present in the straight running direction of the vehicle, and the direction of the optical axis of the other lamp is deflected with a delay upon receipt of a further steering operation. It is possible to carry out an illumination in the running direction and the straight running direction of the vehicle. In particular, the invention is very effective for maintaining the safety running of the vehicle on an intersection road or at time of a lane change.Type: ApplicationFiled: October 2, 2002Publication date: April 10, 2003Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Kiyotaka Fukawa
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Patent number: 6543919Abstract: A motor vehicle headlight comprises a light source co-operating with a mirror and a glass, the mirror having a back and at least one side cheek exposed to radiation from the source. According to the invention, at least one of the cheeks is suitable in at least one zone for reflecting light so as to extend laterally and with continuity the beam generated by the back of the mirror, substantially without reinforcing said beam on the road axis; the glass is smooth or deflects to a very small extent only. Application to homogeneous light beams of great width.Type: GrantFiled: November 4, 1999Date of Patent: April 8, 2003Assignee: Valeo VisionInventor: Benoit Reiss
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Patent number: 6527423Abstract: A headlight allowing easy adjustment of a delicate light distribution pattern during manufacturing is provided. The headlight includes a light source, a reflector surrounding the light source from its backside to reflect light incident from the light source frontward, and a front lens located in front of the light source and the reflector. The front lens is provided with at least two portions different in light transmission characteristic from each other.Type: GrantFiled: July 20, 2001Date of Patent: March 4, 2003Assignee: Cateye Co., Ltd.Inventor: Masao Shoji
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Patent number: 6527424Abstract: A headlight for a vehicle for producing a low beam and at least one light beam with a greater distance, the headlight comprising a light source, a reflector, the light source and the reflector together forming a headlight unit, an electrically adjusting device for changing a relative position between the light source and the reflector, a light width adjusting device for turning the headlight insert about an at least approximately horizontally extending axis, and a safety device operative for monitoring at least indirectly an operation of the adjusting device and in the case of an error when the adjusting device operates not in an orderly manner, the safety device reduces an electric power with which the light source is operated and/or reduces a distance of a light beam produced by the headlight unit.Type: GrantFiled: August 13, 2001Date of Patent: March 4, 2003Assignee: Robert Bosch GmbHInventors: Ernst-Olaf Rosenhahn, Michael Hamm, Walter Thieringer, Rainer Wuestenhagen, Doris Boebel
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Patent number: 6520668Abstract: A motor vehicle headlight has a light source cooperating with a reflector to produce a light beam. The reflector has an active base region immediately behind the light source, and is arranged to reflect the radiation from the source to produce a beam of given photometry. The said base region includes, in at least one zone from which light would, in the absence of the invention, be reflected back to the close vicinity of the light source, a corrected reflective surface which produces corrected radiation that remains spaced away from the vicinity of the source without disturbing the photometry. Reflection back to the source, and consequently the danger of overheating the source and/or production of parasitic images, are eliminated.Type: GrantFiled: March 17, 2000Date of Patent: February 18, 2003Assignee: Valeo VisionInventor: Benoit Reiss
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Patent number: 6511215Abstract: A lamp apparatus or a vehicle headlamp having first and second lamp units that are provided adjacent to each other in the lateral direction so as to tilt in a lamp body by first and second aiming mechanisms, respectively. First supporting portions for supporting a fulcrum pin and aiming screws of the fast aiming mechanism are provided behind the first lamp unit in the lamp body, and second supporting portions for supporting a fulcrum pin and aiming screws of the second aiming mechanism are provided behind the second lamp unit in the lamp body; and at least one of the plurality of first supporting portions and at least one of the plurality of second supporting portions are provided so as to overlap each other in a direction in which the lamp units are disposed when the headlamp is viewed from front.Type: GrantFiled: May 23, 2001Date of Patent: January 28, 2003Assignee: Koito Manufacturing Co., Ltd.Inventor: Kazuya Hashigaya
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Publication number: 20030012031Abstract: A vehicle lamp. A lamp chamber is partitioned by a lamp body in a vessel-like shape and by a front face lens, a reflector is attachedly inserted with a light source and is contained in the lamp chamber, and an aiming mechanism is interposed between the lamp body and the reflector for supporting the reflector inclinably to the lamp body. The reflector is inclined by rotating an aiming screw supported by a screw inserting hole provided at the lamp body. A rear end portion of the aiming screw projects to the rear side of the lamp body and includes an integrated crown gear made of a metal. A disk face of the gear is provided with a raised wrench engaging portion for engaging with an L-shaped wrench to thereby operate to rotate the aiming screw by using the L-shaped wrench extending from the side of the lamp piece. Aiming screw adjustments can be carried out even when there is no rear space behind the lamp piece. The wrench engaging portion can be formed simply.Type: ApplicationFiled: July 12, 2002Publication date: January 16, 2003Inventors: Takashi Kurita, Katsuhiko Iiyama
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Publication number: 20030007364Abstract: Luminous intensity distribution patterns of a sub reflector and a main reflector are combined, and the combined pattern continuously changes based on a movement of the sub reflector. The main reflector and the sub reflector reflect the light from a light source to illuminate the road surface and the like in a target luminous intensity distribution pattern. As a result, it is possible to effectively utilize the light from the light source, as compared with the headlamp that makes only the main reflector reflect the light from the light source.Type: ApplicationFiled: June 10, 2002Publication date: January 9, 2003Applicant: Ichikoh Industries, Ltd.Inventor: Yutaka Nakata
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Patent number: 6497503Abstract: A headlamp system stores a plurality of beam patterns on a microprocessor 32 that selects a predetermined beam pattern based on driving conditions and sends the predetermined beam pattern to a digital micromirror device (DMD) 18 that is capable of generating the desired beam pattern by adjusting the position of individual pixels on the DMD 18. Several vehicle parameters are inputs 36, 37, 38, 29, 70 to the microcontroller 32 and are used to determine the appropriate beam pattern to be produced by the DMD 18 and projected by the headlamp system of the present invention.Type: GrantFiled: June 21, 2001Date of Patent: December 24, 2002Assignee: Ford Global Technologies, Inc.Inventors: Mahendra Somasara Dassanayake, Paul Mulvanny, Sheran Anthony Alles
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Patent number: 6485168Abstract: A headlight device for a vehicle has at least two headlights, each emitting a screened light beam with an upper bright-dark limit, which on a counter traffic side and on a traffic side has different portions. A portion on the counter traffic side is arranged deeper in a vertical direction than a portion on the traffic side, and the portion on the traffic side extends so as to ascend starting from the portion on the counter traffic side over a part of the extension of the portion on the traffic side. The headlights are formed so that the light bundles are emitted with different bright-dark limits. At least one headlight emits a first light bundle with a bright-dark limit, with the portion which on the traffic side is located higher in a vertical direction than the portion of the bright-dark limit at the traffic side of a second light bundle emitted by at least one second headlight.Type: GrantFiled: March 27, 2000Date of Patent: November 26, 2002Assignee: Robert Bosch GmbHInventors: Ernst-Olaf Rosenhahn, Michael Hamm
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Patent number: 6481879Abstract: A head lamp with a movable reflector. The headlamp includes a lamp body, a reflector with a light source mounted thereon, and an aiming mechanism interposed between the lamp body and the reflector (14) for tiltably supporting the reflector (14) with respect to the lamp body. The reflector tilts by the rotational movement of the aiming screw which is rotatably supported in a screw insertion hole formed on the lamp body. The screw insertion hole is formed by a tubular portion, and the front portion of the tubular portion includes divided swinging strips (53) which are resiliently deformable in the radial direction. The swinging strips engage with an engaging groove formed on the aiming screw to prevent the aiming screw from being detached from the lamp body. The aiming screw includes a rotatably supported portion formed of resin, a male screw portion, and a gear portion behind the rotatably supported portion.Type: GrantFiled: October 23, 2000Date of Patent: November 19, 2002Assignee: Koito Manufacturing Co., Ltd.Inventors: Katutada Shirai, Kihachiro Uchida
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Patent number: 6481880Abstract: The present invention relates to a aiming apparatus to be interposed between a reflector and a housing to adjust direction of light reflected by the reflector; the aiming apparatus comprising an adjusting screw rotatably engaged at one end with the housing at a predetermined position; a pivot nut having at one end a nut portion capable of achieving thread engagement with the other end of the adjusting screw and at the other end a pivot portion, respectively; a pivot holder attached to a rear side of the reflector; and a nut receiver fixed on the front side of the housing at a predetermined position.Type: GrantFiled: July 24, 2001Date of Patent: November 19, 2002Assignee: Aoyama Seisakusho Co., Ltd.Inventors: Hiromichi Mizuno, Hisashi Ito, Yoichi Tatsumi
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Patent number: 6478460Abstract: In a headlamp of an automobile, a reflector is divided to an upper reflector member positioned above an optical axis and a lower reflector member including the optical axis; the upper reflector is rotatable and provided with a reflection face for forming a diffusing luminous intensity distribution pattern; the lower reflector member is provided with a light source bulb, rotatable and provided with a reflection face for forming a reference luminous intensity distribution pattern. Therefore, the diffusing luminous intensity distribution pattern and the reference luminous intensity distribution pattern can independently or simultaneously be changed by rotating the upper reflector member and the lower reflector member independently or simultaneously. Accordingly, visibility is improved when an automobile is running on a curved road.Type: GrantFiled: December 4, 2000Date of Patent: November 12, 2002Assignees: Ichikoh Industries, Ltd., Nissan Motor Co., Ltd.Inventors: Takayuki Furuya, Kinya Iwamoto, Kiyotaka Ozaki, Kenjo Umezaki
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Patent number: 6447153Abstract: A reflector is for reflecting light rays from the light source bulb to set up a brightness intensity distribution pattern. The reflector is separated in a movable reflector part and a fixed reflector part. The movable reflector part has a first separated edge. The fixed part has a second separated edge in opposition to the first separated edge. A driving means is for moving the movable reflector part relative to the fixed reflector part to change a brightness intensity distribution pattern of light rays from the light source bulb. The shading flange is for shading an air gap between the first separated edge and the second separated edge.Type: GrantFiled: August 16, 2000Date of Patent: September 10, 2002Assignee: Ichikoh Industries, Ltd.Inventor: Takayuki Kawamura
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Patent number: 6447151Abstract: A variable beam width headlight whose beam width decreases and length increases as velocity of a vehicle increases and whose beam width increases and length decreases as velocity of a vehicle decreases. As the velocity of a vehicle increases or decreases so too does the airflow to the headlights. Therefore, airflow can be used as a measurement of an increase or decrease in velocity. Each headlight has a reflector, a light source within the reflector and an aperture through which a beam passes after light rays from the light source have been reflected from a reflector surface. When the velocity of a car increases, the aperture of the reflector decreases in size resulting in a narrower, longer beam of light allowing the driver to see objects far in the distance. When the velocity of a car decreases, the aperture of the reflector increases in size resulting in a wider, shorter beam of light allowing the driver to see objects nearby that are to either side of him.Type: GrantFiled: July 12, 2001Date of Patent: September 10, 2002Inventor: Russell K. Jones
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Patent number: 6428194Abstract: A headlight for a vehicle operating in accordance with a projection principle has a light source, a reflector, a shield arranged in a beam path of a light reflected by the reflector for producing a bright-dark limit of a light bundle exiting the headlight, a lens through which the light passing on the shield passes, a light-permeable cover member arranged after the lens in a light outlet direction, the cover member having a region which deviates the passing light upwardly, and a screening device arranged between the shield and the cover member and formed so that at least a part of the light passing on the screen which would pass through the region of the cover member is screened.Type: GrantFiled: August 11, 1999Date of Patent: August 6, 2002Assignee: Robert Bosch GmbHInventors: Horst Oschmann, Hartmut Stephan
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Patent number: 6428196Abstract: A beam angle adjusting device for a vehicular headlamp having a reduced size, especially a reduced thickness of the case body of the device. The beam angle adjusting device is provided with a case body, a motor disposed inside the case body, and a shaft which moves in the front/rear direction in response to rotation of the motor, wherein the motor and a circuit member which has a terminal for supplying power are arranged in symmetrical positions in relation to a plane containing the shaft.Type: GrantFiled: October 2, 2000Date of Patent: August 6, 2002Assignee: Koito Manufacturing Co., Ltd.Inventors: Hirohisa Deguchi, Nobumi Yokoyama
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Publication number: 20020085385Abstract: A headlamp for an automobile includes a lamp body, a light source, a reflector, and an aiming mechanism. The aiming mechanism includes a screw insertion hole and an aiming screw operable to move the reflector by pivoting the aiming screw. The aiming screw includes a supported portion supported by the screw insertion hole, a male screw portion forward from the supported portion, and a pivotal movement operating force transmitted portion rearward from the supported portion. A front end side of the supported portion includes an elastic locking portion operable to pass through the screw insertion hole by being deformed elastically to an inner side in a radial direction, and a rear end side of the supported portion is integrally formed with an elastic rib brought into press contact with a peripheral edge portion on a rear end side of the screw insertion hole to fixedly position the aiming screw.Type: ApplicationFiled: December 28, 2001Publication date: July 4, 2002Applicant: KOITO MANUFACTURING CO., LTDInventor: Katutada Shirai
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Publication number: 20020075694Abstract: A designing method of a reflective surface RS according to the present invention has a step of generating an XY curve Q on an XY plane including the X-axis (optical axis) and Y-axis; a step of, at each of a plurality of base points P existing on the XY curve Q, generating an XZ curve R on a plane (UZ plane) including the base point P and being parallel to a reflection direction of light at the base point P and normal to the XY plane; and a step of generating a surface shape of the reflective surface RS, based on the XY curve Q and the plurality of XZ curves R. This substantiates a method of designing a reflective surface of a reflector in a vehicle lamp with improved controllability of a light distribution pattern and with improved efficiency of a designing work.Type: ApplicationFiled: December 13, 2001Publication date: June 20, 2002Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Hiroshi Kawashima, Masashi Tatsukawa
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Publication number: 20020075693Abstract: A headlight for a vehicle for producing a low beam and at least one light beam with a greater distance, the headlight comprising a light source, a reflector, the light source and the reflector together forming a headlight unit, an electrically adjusting device for changing a relative position between the light source and the reflector, a light width adjusting device for turning the headlight insert about an at least approximately horizontally extending axis, and a safety device operative for monitoring at least indirectly an operation of the adjusting device and in the case of an error when the adjusting device operates not in an orderly manner, the safety device reduces an electric power with which the light source is operated and/or reduces a distance of a light beam produced by the headlight unit.Type: ApplicationFiled: August 13, 2001Publication date: June 20, 2002Inventors: Ernst-Olaf Rosenhahn, Michael Hamm, Walter Thieringer, Rainer Wuestenhagen, Doris Boebel
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Publication number: 20020071286Abstract: In order to solve the problems in a headlamp which a prior discharge lamp or the like is provided as a light source, a headlamp in which a right elliptic reflecting surface and a left elliptic reflecting surface are provided on a position toward the front upper of the bulb, a right parabolic reflecting surface is provided on a position toward the lower and right of said main reflecting surface, and a left parabolic reflecting surface is provided on a position toward the lower and left of said main reflecting surface, whereby the light except for the light traveling in an upward direction from the bulb 2 and toward the main reflecting surface can be recovered and to convert into the light which can be used as the irradiating light; a headlamp in which the elliptic reflecting surfaces 6 which captures light emitted upwardly and forwardly from the bulb 2 and parabolic reflecting surfaces 7 which reflect said light to an irradiating direction and are provided on positions which an optical interference with said mType: ApplicationFiled: October 5, 2001Publication date: June 13, 2002Inventor: Hitoshi Taniuchi
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Patent number: 6402355Abstract: A vehicular headlamp for low-beam illumination with a light distribution pattern having a horizontal cutoff line and a diagonal cutoff line so as to improve long distance visibility on the road on which the vehicle is traveling. An upward deflecting reflecting element for irradiating a beam onto a space in an area above a diagonal cutoff line is formed at the outer peripheral edge of the diagonal cutoff line forming area on a reflecting surface of a reflector. As a result, a small light distribution pattern P1 exhibiting high luminous intensity is formed in a space in the area above the diagonal cutoff line.Type: GrantFiled: August 8, 2000Date of Patent: June 11, 2002Assignee: Koito Manufacturing Co., Ltd.Inventor: Toshiyuki Kinouchi
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Publication number: 20020051364Abstract: A vehicle lamp system 1 having a leveling mechanism 2 for controlling the posture of a reflector RF and a stepping motor 3 as a driving source of the leveling mechanism. The lamp system has a detector 5 which may determine whether an external force, such as a vibration or a shock is given to the reflector RF or if there is a possibility that the vibration or shock may be given to the reflector. A rotor is prevented from being deviated from the original position by exciting each phase coil of the stepping motor with the same excitation phase as the last excitation phase at the time when the stepping motor 3 was last driven or otherwise a coil in only one of the last excitation phases at the time when the stepping motor 3 was last driven, and before vibration or a shock is given to the reflector RF after the coils in the respective phases are totally set to a non-excited condition in the stepping motor 3.Type: ApplicationFiled: October 29, 2001Publication date: May 2, 2002Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Masaaki Ishikawa
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Publication number: 20020044453Abstract: In a headlamp having a single filament bulb or discharge bulb, there is provided a movable shade that can appear from a reflection mirror located above the single filament bulb. In a usual condition, the movable shade is pulled at the back of the reflection mirror located above the single filament bulb. Then, a light emitted from the single filament bulb is condensed by the reflection mirror and irradiates a very long distance thereby to make a high-speed traveling possible. On the contrary, when it is rainy or foggy, the movable shade is protruded in the front of the reflection mirror. Then, a part of a light emitted from the single filament bulb is shielded by the movable shade, and the road surface in 20-40 m front of the vehicle is darkened thereby to reduce surface reflection from the road surface.Type: ApplicationFiled: October 11, 2001Publication date: April 18, 2002Inventors: Masahito Naganawa, Tomoyuki Moritani
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Patent number: 6354722Abstract: A vehicle headlight has a cam mechanism for displacing the reflector and the light source of the headlight with respect to each other, between two relative positions in which the headlight emits two different types of light beam. The cam mechanism comprises a first cam member and a second cam member, and it converts rotation of the first cam member about an axis of rotation into a first straight line motion of the second cam member. The first straight line motion is collinear with the axis of rotation.Type: GrantFiled: February 22, 2000Date of Patent: March 12, 2002Assignee: Valeo VisionInventors: Cesar Lopez Montenegro, Jean Paul Ravier
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Publication number: 20020024817Abstract: A motor vehicle headlight comprises a light source (10) co-operating with a mirror (20) and a glass, the mirror having a back (21) and at least one side cheek (22, 23) exposed to radiation from the source. According to the invention, at least one of the cheeks (22, 23) is suitable in at least one zone for reflecting light so as to extend laterally and with continuity the beam generated by the back of the mirror, substantially without reinforcing said beam on the road axis; the glass is smooth or deflects to a very small extent only.Type: ApplicationFiled: November 4, 1999Publication date: February 28, 2002Inventor: BENOIT REISS
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Publication number: 20020018348Abstract: An illumination axis adjusting apparatus includes a stepping motor integrally having in turn an automatic angle adjusting structure for automatically adjusting the angle of the illumination axis of an automotive headlamp by driving the motor and a manual angle adjusting structure for manually adjusting the angle of the illumination axis of the headlamp.Type: ApplicationFiled: May 31, 2001Publication date: February 14, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Katsuya Miki, Hirofumi Doi, Mutsuo Sekiya
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Publication number: 20020015311Abstract: The present invention relates to a aiming apparatus to be interposed between a reflector and a housing to adjust direction of light reflected by the reflector; the aiming apparatus comprising an adjusting screw rotatably engaged at one end with the housing at a predetermined position; a pivot nut having at one end a nut portion capable of achieving thread engagement with the other end of the adjusting screw and at the other end a pivot portion, respectively; a pivot holder attached to a rear side of the reflector; and a nut receiver fixed on the front side of the housing at a predetermined position.Type: ApplicationFiled: July 24, 2001Publication date: February 7, 2002Applicant: Aoyama Seisakusho Co., Ltd.Inventors: Hiromichi Mizuno, Hisashi Ito, Yoichi Tatsumi
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Patent number: 6341884Abstract: A motor vehicle headlight comprises a light source mounted in a reflector and a glass. The reflector is mounted to pivot about a generally vertical axis, and displacement means are provided to vary the angular position of the reflector. According to the invention, the reflector is capable of occupying at least one first angular position in which the beam emitted thereby passes through a first glass to generate a first type of beam, and a second angular position which is fixed and different form the first angular position(s), and in which the beam passes through a second glass; the headlight also has optical means for generating through said second glass a fixed beam which has photometric characteristics different from those of the beam passing through the first glass. Application in particular to two-function headlights for providing both a cornering light beam and a fog light beam.Type: GrantFiled: May 3, 1999Date of Patent: January 29, 2002Assignee: Valeo VisionInventors: Joël Leleve, André Prevost, Antoine De Lamberterie
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Patent number: 6338567Abstract: A device for adjusting the position of a headlamp reflector of a headlamp assembly. The device includes a housing and a directing member, such as an adjustor screw, which generally extends from the housing. The directing member has an end which is engageable with the headlamp reflector of the headlamp assembly, and an opposite end which is configured to receive a driver generally coaxial with a longitudinal axis of the directing member. The directing member provides that rotation of the driver about an axis which is generally coaxial with the longitudinal axis of the directing member causes the directing member to translate relative to the housing thereby causing adjustment of the position of the headlamp reflector which is engaged with the first end of the directing member.Type: GrantFiled: February 14, 2000Date of Patent: January 15, 2002Assignee: Elco Textron Inc.Inventor: Ronald S. Denley
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Publication number: 20020001199Abstract: A vehicle foglight, or other light for illuminating or signalling purposes, has a casing and a reflector, with a cradle which connects the reflector to the casing and which has an aperture in its upper part such that the cradle is U-shaped. The lamp is mounted in the aperture and the rear wall of the casing carries a metal plate. Heat from the lamp is dissipated so that plastics components are not unduly heated.Type: ApplicationFiled: April 25, 2001Publication date: January 3, 2002Inventor: Frank Dinant