Abstract: An adjustable fixing element, particularly for headlights of motor vehicles, has a setscrew on which a first screw element and a second screw element are arranged with locating surfaces which face each other. In order to create an adjustable fixing device which can be adjusted higher from the side of the plate facing away from the object to be fixed or from another holder, it is proposed to provide a handling aid on the first screw element which projects beyond its locating surface. The second screw element exhibits a corresponding recess in its locating surface for receiving the handling aid of the first screw element.

Abstract: 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.

Abstract: An adjusting element is provided for fastening a headlight arrangement on a vehicle. The adjusting element has a nut element and a screw element, the screw element being screwed into the nut element. An opening is formed at a vehicle-body-side supporting plate for the nut element. The nut element is formed by an expansion nut which can be inserted into the opening, can be adjusted and has an eccentrically constructed receiving groove, so that, in the insertion direction and transversely thereto, the opening has a larger measurement than the inside diameter of the receiving groove and that, as a result of the screwing of the screw element into the positioned expansion nut, the latter is fixed on the supporting plate.

Abstract: A vehicular headlamp wherein aiming adjustment of two reflectors can be conducted accurately regardless of the positional relation between aiming screws operating in conjunction with each other. The headlamp includes first and second reflectors mounted in a lamp chamber defined by a lamp body opening at its front and a lens covering the front opening of the lamp body, the reflectors each being tiltable by turning of an aiming screw of a corresponding aiming mechanism that supports the corresponding reflector in a tiltable manner relative to the lamp body. A belt mechanism rotationally couples the two aiming screws for allowing the first aiming screw for tilting the first reflector and the second aiming screw for tilting the second reflector to be turned in conjunction with each other.

Abstract: The present invention provides an adjustment mechanism by which a luminaire may be adjusted and secured along an arcuate path. The adjustment mechanism includes a mounting bracket, adjustment bolt, adjustment brace, which is attached to the optical housing of the luminaire, and a positioning means, such as an eyebolt. The adjustment bolt is threadably attached to the adjustment brace via a non-rotatable nut. The adjustment bolt, which is disposed through the positioning means, is turned in order to adjust the position of the luminaire. As the adjustment bolt turns, the non-rotatable nut, along with the adjustment brace and optical housing attached thereto, moves along the threaded shaft of the bolt. When the turning of the bolt has ceased, the non-rotatable nut, adjustment brace and optical housing are secured in position by the frictional engagement of the thread of the bolt and the thread of the nut.

Abstract: The present invention provides an adjustment mechanism by which a luminaire may be adjusted and secured along an arc. The adjustment mechanism includes a mounting bracket, adjustment bolt, adjustment brace, which is attached to the optical housing of the luminaire, and a positioning means, such as an eyebolt. The adjustment bolt is threadably attached to the adjustment brace via a non-rotatable nut. The adjustment bolt, which is disposed through the positioning means, is turned in order to adjust the position of the luminaire. As the adjustment bolt turns, the non-rotatable nut, along with the adjustment brace and optical housing attached thereto, moves along the threaded shaft of the bolt. When the turning of the bolt has ceased, the non-rotatable nut, adjustment brace and optical housing are secured in position by the frictional engagement of the thread of the bolt and the thread of the nut.

Abstract: A vehicle lamp includes: a reflector having a rear surface and an aiming screw coupling portion; a lamp body having an inner surface, for containing the reflector tiltably; an aiming screw extending in a substantially longitudinal direction coupled to the aiming screw coupling portion of the reflector and the lamp body; a first projected portion formed near the aiming screw coupling portion on the rear surface of the reflector; and a second projected portion formed on the inner surface of the lamp body in a place behind the first projected portion. When the reflector is tilted up to a predetermined angle position, the first and second projected portions are brought into contact with each other within a plane substantially perpendicular to the axial direction of the aiming screw.

Abstract: A headlamp adjuster includes a gear housing having a neck through which an input shaft extends in an interference fit. The interference fit provides a resistance to rotation of the input shaft. A drive gear is disposed within the gear housing and is connected to the input shaft such that rotation of the input shaft causes rotation of the drive gear. An adjustment gear is disposed within the gear housing such that it intermeshes with the drive gear. The adjustment gear has a bore therethrough that is at least partially threaded. An adjustment shaft is threaded through the bore through the adjustment gear. The adjustment shaft may include a force-limiting feature to prevent over-adjustment of the adjuster.

Abstract: A vehicle lamp arrangement for mounting to a vehicle body, the lamp arrangement having an irradiation angle adjusting mechanism, including a vehicle mounting bracket mounted to the vehicle body and having a shielding portion; a lamp body portion for housing the lamp; and an adjusting shaft having a first portion completely covered by the vehicle mounting bracket and a second portion for connecting to the lamp body portion, the adjusting shaft being configured within the lamp arrangement to adjust a distance between the vehicle body and the shielding portion when the adjusting shaft is rotated such that the vehicle lamp is inclined with respect to the vehicle body, wherein upon connection of the second portion of the adjusting shaft to the lamp body portion, the second portion of the adjusting shaft is also shielded such that the rotating operation of the adjusting shaft is disabled.

Abstract: An adjustment prevention mechanism includes a fixing member provided to a part of a headlamp, and a moving member which is movable to an adjustment position and a shipping position relative to the fixing member and covers the adjusting member. The fixing member includes a tool guide, a moving member guide and a stopper. The moving member has a tool insertion hole which permits a tool to reach the adjusting element in accordance with the tool guide in the fixing member when the moving member is in the adjustment position, and prevents the tool from reaching the adjusting element when the moving member is in the shipping position. This adjustment prevention mechanism is attachable to the headlamp prior to mount the headlamp on an automobile.

Abstract: An adjusting apparatus for the reflector in an automotive lamp assembly has a screw, a mounting clip for mounting the adjusting apparatus to the reflector, and a retainer clip for positioning the adjusting apparatus such that it can properly adjust the reflector. The adjusting apparatus can be installed as a unitary piece through the lens, or through the support from of the automotive lamp assembly. The adjusting apparatus reduces the labor required to assemble the automotive lamp assembly and the number of parts the assembler must keep in inventory. Thus, the overall cost to produce a completed automotive lamp assembly is reduced.

Abstract: A headlamp for a vehicle includes a lamp housing having an opening portion; a discharge lamp removably contained in the lamp housing; and a lighting circuit unit, mounted in such a manner so as to cover the opening portion from a rear surface side of the lamp housing, for lighting the discharge lamp. A plug is separated from a cord connector when the lighting circuit unit is removed from the lamp housing. Thus, when the work of removing the lighting circuit unit is completed, the plug is necessarily separated from the cord connector, to thereby cut off the power supply to the lighting circuit unit.

Abstract: The movable reflector of the headlight of a motor vehicle can be orientated by means of an orientation adjustment device located inside the body of the headlight. The orientation of the reflected light beam is controlled with the help of an adjustable graduated scale which is connected to the reflector and which can move with respect to a stationary indicator fixed to the headlight, so as to indicate the changes in orientation of the reflector. The graduated scale is set to zero by means of a manual adjustment carried out by specialized personnel using a special tool, once the reflector has been correctly orientated by means of the adjustment device. The stationary indicator and the graduated scale are located so that they are clearly visible inside the headlight, beneath the transparent cover of a porthole which can be opened in order to set the scale to zero.

Abstract: A headlight adjuster for adjusting the aim of a headlight. The adjuster provides relatively fine incremental control of headlight motion in response to relatively coarse adjustment of a drive shaft. This functionality is achieved by use of a link having two gear driven sections. A first helical section engages a drive gear which serves as the mechanical input. A second threaded section of relatively fine thread engages a nut fixed in the adjuster housing. The link is carried in a linear bearing which allows free rotation of the link in accordance with the mechanical input. The degree of translation, however, is controlled by the pitch of the thread engaging the nut.

Abstract: A vehicular headlamp having a structure for supporting an aiming screw which includes an aiming screw constituted by a threaded part, a ball part integrally formed at a front end of the threaded part and a slide shaft part, which is not circular in cross section, formed at a rear end of the threaded part, a gear shaft rotatably supported by a lamp housing having a gear part and a threaded hole into which the threaded part of the aiming screw engages threadably, and a fastener member having a slide hole, which is not circular in cross section, and a fixing part for fixing the gear shaft to the lamp housing. The slide shaft part of the aiming screw slidably engages the slide hole of the fastener member, and the fastener member is prevented from rotating with respect to the lamp housing.

Abstract: An apparatus for aligning the object focus of an elliptical reflector, such as positioned within the filament tube of a filament irradiating unit, with a directional axis, such as the centerline of the filament as it travels through the tube. The apparatus includes a support assembly for mounting the tube in a precisely fixed position, and three adjustable mounting assemblies connected to the support assembly at three spaced apart connection points for mounting the support assembly on a stationary base. Each of the mounting assemblies includes a pair of linkages each of adjustable length and forming two sides of a triangle with its apex at the point of connection to the support assembly.

Abstract: An adjuster mechanism having an aiming device carried on the shaft of the ball stud. The adjuster mechanism includes a gear housing having a track for guiding the aiming device and an indicator for reading the position of the aiming device. The adjuster mechanism also includes a gland for sealing the headlamp housing. The gland is fitted over the shaft of the ball stud and is squeezed between the headlamp housing sealing bore and the ball stud shaft. The bearing surfaces of the gear housing and sealing bore are slanted to automatically center the ball stud. The adjuster mechanism further includes an anti-rotation insert seated within a cover. The insert engages a groove in the shaft of the ball stud to prevent rotation of the ball stud within the gear housing.

Abstract: A novel sealing device is used to seal an adjustor mechanism which is used to adjust the position of a movable headlamp component housed within a sealed stationary component in a headlamp arrangement. The stationary component has an opening through a rear wall for insertion of the adjustor mechanism therethrough. The adjustor mechanism includes a housing connected to the stationary component and an adjusting screw member. A shank of the adjusting screw member extends from the housing and extends through the opening in the stationary component wall and into the interior of the stationary component. The novel sealing device of the present invention includes a flexible, elastomeric shroud member having a body portion; a forward sealing structure for sealedly attaching the body portion to the shank of the adjusting screw member; and a rearward sealing structure for sealedly attaching the body portion to the opening in the stationary component.

Abstract: A cylindrical member is formed integrally on a lamp housing and enclosing a threaded portion formed on the rear end of an aiming screw. First and second sliding members are disposed coaxially inside the cylindrical member around the threaded portion of the aiming screw. The first sliding member is slidable from first to second position in relation to the second sliding member. In the first or second position, the first and second sliding members are blocked from sliding relative to each other. The second sliding member has formed thereon an elastic flap having a stopper which is to be engaged in the cylindrical member when the first sliding member takes the first position. When the first sliding member is in the second position, the stopper is disengaged from the cylindrical member. Further, the second sliding member has formed thereon teeth which are engaged with the threaded portion upon disengagement.

Abstract: An automotive vehicular headlamp adjustment mechanism comprises a ball rod having a ball element disposed upon a free end thereof for connection to a vehicular headlamp housing. A threaded drive rod, having oppositely disposed threaded sections formed thereon, is rotatably journalled within a bushing member which slidably supports the ball rod for slidable movement in extension and retraction directions.

Abstract: A vehicular headlamp including a lamp body, a reflector accommodated in the lamp body and tiltably supported with respect to the lamp body by an aiming mechanism, and an aiming screw which constitutes a part of the aiming mechanism and extends in a front-rear direction of the lamp body. The rear end part of the aiming screw penetrates the rear wall of the lamp body and protrudes rearward from the lamp body. An orthogonal conversion gear mechanism engaging a rear end part of the aiming screw and has a rotational operating shaft linked with the aiming screw for causing the same to rotate. The rotational operating shaft is provided on an upper end thereof with a concave engaging part engageable with the tip of a driver tool. An expanding member protruding from the rear wall of the lamp body covers the orthogonal conversion gear mechanism like a visor. The expanding member also serves as a driver guide for guiding the tip end of the driver to a concave engaging part of the rotational operating shaft.

Abstract: The headlight has a reflector which is mounted inside a casing for swiveling about a swivel axis extending approximately in a horizontal center plane of the reflector, close to the apex region of the latter. The front edge, pointing in the light emission direction, of the reflector has an at least approximately circular arc shape in planes at right angles to the swivel axis and the center point thereof is arranged at least approximately on the swivel axis. The casing has a part whose edge pointing opposite to the light emission direction adjoins the front edge of the reflector and, in planes at right angles to the swivel axis, likewise has an at least approximately circular arc shape, and whose center point is arranged at least approximately on the swivel axis. Because of this design the gap between the casing part edge and the front edge of the reflector can be kept small, since when the reflector makes a swiveling movement about the swivel axis, the gap varies only slightly or not at all.

Abstract: A semiconductor laser module including a barrel screwed up with a screw cap and a semiconductor laser beam generating device mounted inside the barrel and triggered to emit a laser beam out of a laser beam firing hole on the screw cap, wherein the semiconductor laser beam generating device has two opposite pairs of planes spaced equiangularly spaced around the periphery and respectively stopped against; the barrel has springs mounted in respective locating holes and respectively stopped against two adjacent planes on the semiconductor laser beam generating device and two adjustment screws mounted in respective screw holes and respectively stopped against the other two adjacent planes of the semiconductor laser beam generating device and turned to align the longitudinal central axis of the position of the semiconductor laser beam generating device with that of the barrel.

Abstract: An automotive headlamp including a gear apparatus having a cylindrical gear shaft supporting wall extending from an opening edge of a shaft insertion hole formed in a supporting wall of a lamp housing, the gear shaft supporting wall being formed on an edge surface thereof with slits or protrusions, a gear shaft having a gear part which is provided at a surface thereof facing the edge surface of the gear shaft supporting wall with projections or slits which engage with the slits or projections of the gear shaft supporting wall, the gear shaft further including an engagement groove formed on an outer peripheral surface of a portion in the vicinity of the other end thereof, and a fastener engaging with the engagement groove for holding the gear shaft in position when it is inserted into the gear shaft supporting wall and the shaft insertion hole. The fastener is provided with resilient pieces extending outward from an outer peripheral edge thereof.

Abstract: An optical axis adjusting device of a vehicle lamp is provided which comprises a reflector tiltably fixed to a lamp housing by a joint member; an aiming screw, turnably laid between the lamp housing and the reflector, for tilting the reflector; a drive gear fastened to an end of the aiming screw; a racing gear facing the drive gear and mounted on the aiming screw so as to rotate relatively with the aiming screw; toothed parts formed in respective surfaces of the drive and racing gears facing each other; and a guide, formed on the housing, for guiding a tool to be engaged with the toothed parts. When the tool is turned, the aiming screw is turned simultaneously with the rotation of the drive gear. The racing gear rotates in a direction opposite to that of the drive gear.

Abstract: An angle adjuster for a car headlamp is provided. The adjuster includes an adjuster stand having two crossed gear holders, a vertical gear holder and a crosswise gear holder. A driving gear with an integrally formed adjusting rod is disposed in the vertical gear holder and a threaded sleeve coupled to an active gear is disposed in the crosswise gear holder. A circular toothed groove is formed along the circumferential edge of the active gear to be driven by the driving gear. The two openings defined by the holders are each covered by a respective one of two slip caps. One end of a bolt is engaged with the threads of the threaded sleeve, and the other end is connected to the body of a headlamp. The screwing in or out of the bolt responsive to rotation of the adjusting rod drives the headlamp to change its tilt, the changed angle being set exactly in a simple and easy manner.

Abstract: An improved lighting fixture for projecting a high-intensity beam of light that is imaged at a distant location, with reduced manufacturing cost and with reduced weight, but greater efficiency. Various structures are disclosed for eliminating infrared light from the projected beam, whereby the fixture's lens can advantageously be formed of a suitable plastic material and be configured as an aspheric fresnel lens or a stepped aspheric lens.

Abstract: An indicator assembly, which is used with an adjusting mechanism, designates an initial or "zero" position of a movable headlamp component. The adjusting mechanism includes a housing, an adjusting screw which is disposed through the housing, and a driving mechanism which is operatively associated with the screw. A first end of the screw is operatively associated with a movable headlamp component. The indicator assembly includes a hollow, vial-like member which is attached to the housing and a follower member. The second end of the screw is enclosed within the hollow member. The follower member is operatively associated with and selectively positionable on the hollow member to provide an indication of the zero position of the adjusting screw.

Abstract: An aiming mechanism for a automotive lamp in which play is prevented from developing between a nut, threadedly engaged with an aiming screw, and a nut insertion hole formed in a lamp housing. The aiming screw is connected at its front end to a connecting portion of a lamp unit in a manner so as to allow relative pivotal movement therebetween. The aiming screw is threadedly engaged with a nut made of a synthetic resin mounted in a nut insertion hole in a lamp housing also made of a synthetic resin, and extends through the lamp housing in a direction generally parallel to an axis of the lamp housing. When the aiming screw is turned, the aiming screw is moved back and forth relative to the lamp housing to tilt the lamp unit.

Abstract: A vehicular headlamp which includes a lamp housing and a reflector tiltably supported within the lamp housing by an aiming screw and aiming fulcrums. The aiming screw penetrates the lamp housing and is rotatably supported thereby. The front end of the aiming screw engages the reflector while the rear end protrudes from the lamp housing and is secured to a gear. An adjustment shaft is rotatably supported by the lamp housing, a rear end of the adjustment shaft being fixed to a gear engaging with the gear of the aiming screw. The two gears constitute a gear section which is covered with a cover member having an opening which opens downward, thereby preventing foreign matter such as dirt, water or dust from adhering to the gear section and allowing foreign matter to be immediately discharged from the cover member.

Abstract: An optical axis adjusting device for automotive headlights is disclosed which consists of a pair of optical axis adjusters provided between the lamp unit and car body and each composed of an adjusting screw and screw mounting to adjust the optical axis of the lamp unit with the lamp unit tilted horizontally or vertically with respect to the car body by turning the adjusting screw. Each of the screw mountings is protruded at one end thereof to the back of the car body while the other end thereof is protruded to the front of the lamp unit. The adjusting screw is protruded at one end thereof to inside the car body and at the other end thereof to the front of the headlight, and has a first head formed at the one end thereof and a second head provided on the other end thereof. By turning an adjusting tool fitted on either the first or second screw head, the optical axis of the headlight can be adjusted at either of the front and back of the headlight.

Abstract: A colored light pattern generator including a pair of transparent plates maintained in spaced relationship in a sealed container for defining a fluid-filled cavity. The container includes a receiver and a twist-on-and-off cap ring. The fluid produces random, floating colored images in response to a beam of light being passed through the plates.

Abstract: The optical axis of the reflector is initially adjusted by operating the adjusting screw with the plate member held for a turning of the adjusting screw not to be transmitted to the plate member or with the ring member removed from the lamp housing for the turning of the adjusting screw not to be transmitted to the ring member. Therefore, after completion of the initial adjustment of the reflector optical axis, the index on the lamp housing can be easily put into coincidence with the reference point on the scale on the plate or ring member. Since the adjusting screw is isolated from the plate or ring member during the initial adjustment of the reflector optical axis, the optical axis of the reflector can be easily adjusted only by turning the adjusting screw.

Abstract: A push-on fixer for screw engagement in which a plurality of radially extending notches are formed in a circumferential edge region of a circular hole formed at a center portion of a thin discoid body, and a plurality of inner plate spring pieces are formed on the circumferential edge region of the circular hole so as to allow insertion of an aiming screw into the circular hole and so as to clamp the inserted aiming screw, is provided. An aiming screw is inserted into an aiming screw insertion hole of a lamp body of an automobile head lamp, and is retained so as to be prevented from coming out of the lamp body. A plurality of outer plate spring pieces which press against a push-on fixer abutment surface of the lamp body and a plurality of clamp release claws for releasing the clamping of the screw by the screw clamp plate spring pieces are formed on the outer circumferential edge of the thin discoid body.

Abstract: A device for adjusting the position of a vehicular headlamp includes a gear which, when rotated, effects linear movement of a link to adjust the headlamp. The gear is stamped from sheet metal and includes a flange with angularly spaced and axially extending teeth. A manually adjustable actuator rod is rotatably supported by the housing of the adjusting device and includes angularly spaced teeth which are adapted to drivingly engage the teeth of the gear in order to rotate the gear when the actuator rod is turned.

Abstract: A device for adjusting and controlling the optical axis of a headlamp including an optical axis initial setting mechanism which includes a manual operation section consisting of two operation bolts and a position adjustment member. The bolts provided with operation gears at one end are mounted to the casing of the device in a symmetrical positions on the left and right sides with the head portions of the operation bolts exposed to outside of the casing of the device. The position adjusting member has a gear portion at one end that engages with respective operation gears of the operation bolts and also has an engagement portion at the other end that engages with the aiming shaft so that the engagement portion, which is used for adjustment and control of the optical axis of the headlamp, can slide in the axial direction but cannot rotate in the circumferential direction of the aiming shaft.

Abstract: An adjuster for adjusting a headlamp component along mutually perpendicular coordinates includes an eccentric connected to a threaded shaft and adapted to be rotated to adjust the headlamp component along one coordinate when a toothed wheel on the shaft is turned by a Phillips screwdriver. By using the screwdriver to turn a second toothed wheel on the shaft, the shaft and the eccentric are moved linearly to effect adjustment of the headlamp component along the second coordinate.

Abstract: The reflector of the headlamp is pivotally supported within a housing for vertical tilting about a horizontal axis and for horizontal pivoting about a vertical axis. A bubble level is carried by the reflector and may be adjusted relative thereto to a level position after the reflector has been tilted about the horizontal axis to establish proper vertical aiming of the headlamp beam. A horizontal indicator is located at the same inspection position as the bubble level and may be adjusted to a zero setting after the reflector has been pivoted about the vertical axis to establish proper horizontal aiming of the beam. Part of a mounting platform for the bubble level also serves as part of an indicating scale for the horizontal indicator.

Abstract: A vehicle headlamp assembly provided with an adjustment device for adjusting the position of a lamp unit and wherein the adjustment device is combined with a rotatable recalibration arrangement that includes a position indicator in the form of a disk member provided with teeth at its periphery and in which the teeth of the disk member are shielded by a wall so as to prevent accidental movement of the disk member when the latter is positioned to indicate the aimed position of the lamp unit in the horizontal plane.

Abstract: An aimable vehicle headlamp is disclosed which has a lamp unit rigidly held by a mounting ring which is of rectangular, horizontally elongated shape as seen in a front view and which is to be mounted to a vehicle for rotary motion in every direction within limits. A helical tension spring is coupled to the mounting ring at a point adjacent one corner thereof for biasing the same toward the vehicle. A horizontal aiming screw extends between a first lug on one shorter side, away from the corner, of the mounting ring and the vehicle. A vertical aiming screw extends between a second lug on one longer side, also away from the corner, of the mounting ring and the vehicle. The second lug projects from the one longer side of the mounting ring a greater extent than does the first lug from the one shorter side of the mounting ring, so that approximately equal forces are required for turning the horizontal and vertical aiming screws.

Abstract: A vehicle headlight adjusting device includes a housing, a rotational member rotatably received in the housing, an adjusting screw with an end thereof coupled to a vehicle headlight to move therewith and passing through the housing and a threaded through hole in the rotational member, and a drive shaft with a gear securely coupled to an end thereof for engaging with annular teeth on the rotational member, whereby a rotational movement of the drive shaft is transformed into a linear movement of the adjusting screw to adjust the position of the vehicle headlight.

Abstract: A snap-in headlamp adjustment assembly for positioning a vehicle headlamp mounted upon a movable mounting bracket relative to a fixed vehicle frame includes a snap-in adjuster nut being formed of a head portion, a body portion, and a flange portion. The head portion includes a plurality of resilient arms which are interlockingly engagable with an interior retaining surface of the fixed vehicle frame to secure the adjuster nut against axial movement relative to an opening in the vehicle frame. A pair of projections are formed on the flange portion and are engagable with corresponding grooves disposed adjacent the opening on an exterior surface of the vehicle frame to secure the adjuster nut against rotation relative to the opening on the vehicle frame.

Abstract: A vehicular headlamp which includes an inclination measuring unit provided between an aiming screw and the reference member of the headlamp (the lamp body in the case of a movable reflector type headlamp and the lamp housing in the case of a movable unit type headlamp), which is simple in construction and easy to adjust. The inclination measuring unit is provided between the reference member and a straight portion on a rear end portion of the aiming screw, which is threadably engaged with the reference member. The inclination measuring unit includes a guide member extending substantially parallel to the aiming screw, a slide member supported on the straight portion and slidably coupled to the guide member, and a scale provided on the guide member or slide member for indicating an amount of displacement of the inclination member, thereby to measure the inclination of the latter.

Abstract: A headlamp positioning device having a stepping motor and a sensor for detecting loss of steps in the motor. An electronic controller operating in open-loop with the motor automatically reinitiates the positioning upon the detection of loss of steps due to an impediment during the positioning of the headlamps.

Abstract: A headlamp adjuster mechanism, constructed according to the teachings of the present invention, for use with a headlamp for controlling movement thereof comprises a housing. Gear means is disposed within the housing, and an adjusting member is connected to the gear means for movement in response to rotation of the gear means. The gear means is operatively connected to the headlamp for attaining controlled positioning thereof and for providing prevailing torque for the mechanism to prevent inadvertent movement thereof. The housing comprises a main body portion and a cap for slidable engagement with the main body portion. The body and the cap have interengagable locking means for providing a snap-type interference fit therebetween to maintain the housing components in assembly.

Abstract: A headlamp includes an adjusting mechanism for adjusting a reflector (3) of the headlamp about at least one axis (8). The adjusting mechanism comprises a threaded nut (9) attached to the reflector and a threaded shaft (12) which is rotatably mounted on a stationary part (1) of the headlamp. Adjustment of the reflector is displayed by a scale-like indicator mechanism which includes a fixed part (24) and an adjustable part (15). According to the invention, the adjustable part is formed of an idling toothed wheel (15) that meshes with a pinion (21) of the threaded shaft but which can be disengaged therefrom by axial displacement of the toothed wheel.

Abstract: A horizontal sighting apparatus for head lamps, in which an index portion having an index moved by adjusting an adjusting screw is brought into engagement with the adjusting screw. A mating-index portion having a mating-index is provided on the lamp housing at a position confronting the index portion. The index portion and the mating-index portion are capable of being aligned with each other irrespective of an adjustment amount of the adjusting screw.

Abstract: A vehicular headlamp in which the degree of freedom in the arrangement of the two aiming points and the pivot point is large. An inclination member with a light reflecting surface which establishes an axis of irradiation of the headlamp is supported at one pivot point fixed in position with respect to a reference member and two aiming points which are engaged with two aiming screws supported by the reference member in such a manner that the distances of the two aiming points from the reference member are adjusted by turning the respective aiming screws. The one pivot point and two aiming points are positioned at the vertices of a triangle which has one side which is horizontal as viewed from the front, and the inclination member is swung about an inclination axis passing through the pivot point by turning the two aiming screws, so that the direction of the axis of irradiation of the lamp is adjusted.

Abstract: An automobile headlamp which indicates the inclination of the tilting member of the headlamp (the reflector in a movable-reflector type headlamp and the lamp body and reflector unit in a movable-unit type headlamp) in relation to the base member (the lamp body in a movable-reflector type headlamp and the lamp housing in a movable-unit type headlamp) in terms of a change on the scale on an inclination measuring device installed between an aiming screw and the base member. The inclination measuring device includes a guide member supported on the base member and extending approximately in parallel with a protruding portion of the rightward-leftward direction aiming screw. A sliding member is threadedly engaged with the protruding portion of aiming screw such that the sliding member slides relative to the guide member as the aiming screw is rotated. A linear scale formed on the guide member indicating an amount of relative displacement between the guide member and a reference mark on the sliding member.

Abstract: To facilitate aiming of a motor vehicle headlamp, e.g. as specified in U.S. Lighting Standard SAE J602, a motor vehicle headlamp having a housing with a light-transmitting front cover and a lamp reflector body mounted completely within the housing has an abutment carried by a rod at the top of the headlamp. The rod is slidable in bearings and connected with an adjusting screw for the lamp reflector body so that adjustment of the screw also moves the rod. A conventional mechanical headlamp aimer in mounted on the light-transmitting front cover of the housing in known manner and engages against the abutment.