US 11,927,477 B2
Method for photometric characterization of the optical radiation characteristics of light sources and radiation sources
Klaus Trampert, Karlsruhe (DE); Udo Krüger, Werra-suhl-Tal (DE); and Christian Schwanengel, Ilmenau (DE)
Assigned to TECHNOTEAM HOLDING GMBH, Ilmenau (DE)
Filed by TechnoTeam Holding GmbH, Ilmenau (DE)
Filed on Jul. 16, 2021, as Appl. No. 17/378,612.
Claims priority of application No. 10 2020 208 992.2 (DE), filed on Jul. 17, 2020.
Prior Publication US 2022/0018709 A1, Jan. 20, 2022
Int. Cl. G01J 1/42 (2006.01); G01J 1/02 (2006.01); G01M 11/02 (2006.01); G01M 11/06 (2006.01)
CPC G01J 1/4257 (2013.01) [G01J 1/0238 (2013.01); G01J 1/0242 (2013.01); G01J 1/0266 (2013.01); G01J 1/42 (2013.01); G01M 11/0214 (2013.01); G01M 11/0221 (2013.01); G01M 11/061 (2013.01); G01M 11/065 (2013.01); G01J 2001/4247 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for photometrical charting of a light source clamped within a positioning device, the positioning device comprising a plurality of machine coordinate systems which move against each other according to a kinematic chain, and the light source having an object coordinate system by means of a luminance density measurement camera arranged stationary relative to a world coordinate system, the method comprising:
moving a light source between a first actual measurement position and at least one further actual measurement position along the kinematic chain of the positioning device within the world coordinate system,
recording a luminance density measurement image describing the spatial distribution of a photometric characteristic within a measurement surface by means of the luminance density measurement camera in each actual measurement position with the light source turned on,
recording the position and/or orientation of the object coordinate system relative to the world coordinate system in each actual measurement position in direct reference to the world coordinate system without reference to the kinematic chain of the positioning device, and
recording the position and/or orientation relative to the world coordinate system in an actual measurement position by direct reference to the world coordinate system without reference to the kinematic chain of the positioning device with a guaranteed recording tolerance that is, with respect to at least one parameter, smaller than a guaranteed positioning tolerance of the positioning device,
wherein the guaranteed recording tolerance is defined as a maximum deviation of the actual measurement position and/or orientation from the recorded position and/or orientation relative to the world coordinate system, and the guaranteed positioning tolerance is defined as a maximum deviation of the actual measurement position from a predetermined set measurement position, and
wherein the positioning device is selected with a positioning tolerance less or equal to a required positioning tolerance, which required positioning tolerance is determined to be sufficient such that a sequence of predetermined set measurement positions are arranged and approached such that the photometric characteristic of the light source is completely recorded when the light source reaches actual measurement positions corresponding to the predetermined set measurement positions, wherein each actual measurement position is within the required positioning tolerance from the corresponding predetermined set measurement position.