A vehicle headlamp alignment system is provided that includes a headlamp located on a vehicle, an adjuster module for adjusting aim of the headlamp, and a camera located on the vehicle. Sensors may determine distance and orientation of the vehicle relative to a wall. A controller processes images of a beam on the wall acquired by the camera and determines the aim of the headlamp based on the images. The controller controls the adjuster module to align the headlamp based on the determined aim.

A vehicle headlamp device to be applied to a vehicle includes a light source, a lens, and a controller. The light source is configured to emit light. Light emitted from the light source is to pass through the lens. The controller is configured to control light distribution patterns for the light. The light distribution patterns include at least a first light distribution pattern and a second light distribution pattern. The first light distribution pattern illuminates an area ahead of the vehicle during running of the vehicle. The second light distribution pattern is projected as a marking at an optical axis adjustment that is performed during manufacturing of the vehicle. The controller causes a part of the light source to emit light so that the second light distribution pattern is formed.

A system for simulation of a composite beam is disclosed. The system can comprise a memory storing executable instructions and one or more processors coupled to the memory to execute the executable instructions. The one or more processors can be configured to generate a representation of the original beam pattern transmitted via a propagation of the composite beam, to invoke a propagation model that represents a distortion for the propagation of the composite beam, and to determine a representation of a distorted beam pattern based on the propagation model and on the representation of the original beam pattern transmitted via the propagation.

A device and a method for calibrating a light projector (1) with adaptable luminous elements (3) arranged in an image plane (2), comprising a camera (4) and a control unit (5) connected to the light projector (1) and the camera (4), wherein the light projector (1) is configured to project in temporal succession at least two test images (6, 6′) with at least two comparison structures (9, 9′) from the image plane (2) to an arbitrarily extending projection surface (7), the camera (4) is a depth camera configured to record at least two camera images of a recording surface (8) in a manner substantially synchronized temporally with the light projector (1), and to detect the three-dimensional position data of the comparison structures (9, 9′) in the camera images, and the control unit (5) is configured to determine the position and orientation of the light projector (1), and to calculate the translational displacement and rotational twist between camera (4) and projector (1).

A method and a device for the reduction of margins of the light image of a headline, and the headline incorporating the device, is provided, having a reflective diaphragm which is adapted to be shifted in a light axis direction within adjustment limits of a longitudinal position. The margins of the light image can be detected by an optical colour-sensitive photometric sensor, and colour characteristics of the light image margins can be evaluated by identifying a current position of the reflective diaphragm. The reflective diaphragm can then be fixed in the longitudinal position corresponding to selected colour characteristics of the light image margins. The reflective diaphragm can also be adapted to be shifted in a direction perpendicular to the light axis direction.

A vehicle headlamp device to be applied to a vehicle includes a light source, a lens, and a controller. The light source is configured to emit light. Light emitted from the light source is to pass through the lens. The controller is configured to control light distribution patterns for the light. The light distribution patterns include at least a first light distribution pattern and a second light distribution pattern. The first light distribution pattern illuminates an area ahead of the vehicle during running of the vehicle. The second light distribution pattern is projected as a marking at an optical axis adjustment that is performed during manufacturing of the vehicle. The controller causes a part of the light source to emit light so that the second light distribution pattern is formed.

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.

A method for determining a refractive power of a large-surface-area transparent object, such as a windshield, a visual aid, a cockpit glazing, a helmet visor, or the like, includes detecting a first imaging of a first line grating through the transparent object at at least one predetermined point of the object using a camera and determining a line spacing of the first imaging, the rotation of the lines relative to the first line grating or both through use of a computing unit on the basis of the first imaging at the at least one specified point and using the line spacing or rotation of lines to determine the refractive power at the at least one predetermined point of the transparent object.

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.

The invention relates to a method for calibrating a lighting apparatus, particularly lighting apparatus for a motor vehicle.