A laser alignment system for adjusting a mounting bracket of a lamp is disclosed. The laser alignment system includes an alignment bracket including a body portion defining one or more target features and a plurality of index features. The one or more target features include a target that is configured to align with a laser beam and the plurality of index features that are configured to position the alignment bracket along a surface. The laser alignment system also includes a laser alignment tool including a base, a mount, and a laser device. The mount holds the laser device in place and the laser device is configured to emit the laser beam, and the base of the laser alignment tool is shaped to fit within the mounting bracket for the lamp and the laser device directs the laser beam towards a corresponding one of target features of the alignment bracket.

A vehicle headlamp aiming system includes a displaceable aiming surface and an imaging system. The imaging system includes an indexing aim box having at least one imager oriented to capture images of a headlamp and/or one or more vehicle features adjacent to the headlamp and at least one fixed imager oriented to capture one images of the displaceable aiming surface to determine a headlamp cutoff height. The displaceable aiming surface is configured to selectively displace to allow passage of the vehicle. The indexing aim box is configured to translate between the headlamp and another headlamp. One or more computing devices are configured to perform methods for headlamp aim correction using the described system. The methods include providing image inputs from the imaging system and calculating therefrom an aim correction of the headlamps.

The invention relates to a method for determining at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) of a laser beam, comprising: directing the laser beam through a lens arrangement towards a spatially resolving detector, imaging the laser beam at a plurality of different focus positions (F1, . . . ) relative to the spatially resolving detector by adjusting a focal length (f.sub.1, . . . ) of the lens arrangement, and determining the at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) by evaluating an intensity distribution (l(x,y)) of the laser beam on the spatially resolving detector at the plurality of different focus positions (F1, . . . ). The method comprises adjusting the focal length (f.sub.1, . . . ) of the lens arrangement by arranging lens elements (A1, . . . ; B1, . . . ) having different focal lengths (f.sub.A1, . . . ; f.sub.B1, . . . ) in a beam path of the laser beam.

A headlamp aiming tool includes a linear member and four legs, the first of which is connected with one end of the member and the second, third and fourth of which are adjustable relative to the linear member. The first and second legs of the tool are used to measure the distance between the headlamps of a vehicle and the height of the headlamps relative to the ground or floor. The tool may also be mounted on the vehicle via the first and second legs and a fastener connected with the third leg arranged between first and second legs. Lastly, the tool includes a laser device connected with the fourth leg which is also between the first and second legs. The laser device can be aligned with a centerline of the vehicle to direct a laser beam against a screen in front of the vehicle to indicate the vehicle centerline on the screen. The headlamp light and spacing measurements are used to provide headlamp center points on the screen and to determine the horizontal and vertical offset of the low beam light from each headlamp. The offset is used to adjust the headlamps so that they are properly aimed.

A method is described for determining angle errors when measuring slewing angles of a pivoted light-deflecting device, including the following steps: emitting a first light beam and a second light beam, which enclose a light beam angle, onto the light-deflecting device; receiving the first light beam and second light beam deflected by the light-deflecting device and reflected by an object; calculating a first propagation path of the first light beam and a second propagation path of the second light beam; pivoting the light-deflecting device from an initial position to a final position, respective slewing angles of the light-deflecting device being measured in the process and a dependency of the first propagation path on the measured slewing angles being determined; and calculating an angle error for a measured slewing angle to be corrected from the set of measured slewing angles by using the light beam angle, the second propagation path and the dependency of the first propagation path on the measured slewing angle.

An ADAS calibration system for calibrating at least one headlamp of a vehicle. The ADAS calibration system including a support; optical measurement device mounted on the support for detecting the distances of two front or rear wheels of the vehicle from the support; a projection surface mounted on the support; and at least one headlamp beam setter. The headlamp beam setter includes a screen configured to show a pattern created by the two-dimensional projection of the light beam emitted by the headlamp and a camera configured to acquire images of the pattern shown on the screen. The ADAS calibration system also includes a control unit configured to receive from the optical measurement device the distances detected and from the camera the images of the pattern and, in response to them, to compute an alignment angle for the headlamp.

The present disclosure relates to a method for photometrical charting of a light source (Q, 3) clamped within a positioning device (1) and stationary relative to an object coordinate system (T) by means of a luminance density measurement camera (4) arranged stationary relative to a world coordinate system (W), wherein the light source (Q, 3) is moved between a first actual measurement position (P1′) and at least one further actual measurement position (P2′ to P5′) along a kinematic chain of the positioning device (1) within the world coordinate system (W), wherein a luminance density measurement image (81 to 85) describing the spatial distribution of a photometric characteristic within a measurement surface is recorded by means of the luminance density measurement camera (4) in each actual measurement position (P1′ to P5′) with the light source (Q, 3) turned on, and wherein the position and/or orientation of the object coordinate system (T) relative to the world coordinate system (W) is recorded in each actual measurement position (P1′ to P5′) in direct reference to the world coordinate system (W) without reference to the kinematic chain of the positioning device (1). Moreover, the present disclosure relates to the use of such a method for photometric charting of a headlight (3).

A laser alignment system for adjusting a mounting bracket of a lamp is disclosed. The laser alignment system includes an alignment bracket including a body portion defining one or more target features and a plurality of index features. The one or more target features include a target that is configured to align with a laser beam and the plurality of index features that are configured to position the alignment bracket along a surface. The laser alignment system also includes a laser alignment tool including a base, a mount, and a laser device. The mount holds the laser device in place and the laser device is configured to emit the laser beam, and the base of the laser alignment tool is shaped to fit within the mounting bracket for the lamp and the laser device directs the laser beam towards a corresponding one of target features of the alignment bracket.

A system for aiming a headlamp of a vehicle includes a displaceable aiming surface and an imaging system. The imaging system includes a translatable aim box carrying at least one headlamp imager oriented to capture images of a single headlamp and/or one or more vehicle features adjacent to the single headlamp. At least one fixed imager is oriented to capture one or more images of the displaceable aiming surface. The translatable aim box may be configured to translate between the single headlamp and another headlamp. One or more computing devices are configured to perform methods for headlamp aim correction using the described system. Methods for headlamp aim correction are described.

A vehicle (9) headlight measurement system instrumentation structure (1) comprises: a support structure (3); a vehicle calibration assistance structure (4), which is carried by the support structure (3) and includes a headlight aiming device (40), configured to facilitate alignment or calibration of a headlight (90) of the vehicle (9), the vehicle (9) being positioned within a service area (8); a processing system (11) configured to receive, from the headlight aiming device (40), data correlated with a light beam emitted by the headlight (90) and to provide, through an interface (10), an informative indication relating to an operating condition of the headlight (90), where the processing system (11) includes a communication port (12) connectable to an electronic control unit (91) of the vehicle (9).