Method for a directionally dependent measurement of at least one photometric or radiometric characteristic of an optical radiation source, wherein - the emission direction of the photometric or radiometric characteristic is described by the use of a system of planes (A, B, C), the planes of which intersect at a line of intersection passing through the radiation centroid of the radiation source, and by the use of an emission angle (α, β, γ), which specifies the emission direction (α, β, γ) within a considered plane, - a certain plane of the plane system (A, B, C) and a certain emission angle (α, β, γ) within this plane is assigned to each measurement value of the photometric or radiometric characteristic, - the measurement is implemented by means of at least one sensor, which is suitable for measuring the radiation of the radiation source, and - either the sensor or the radiation source is moved within the scope of the measurement such that the sensor records measurement values which specify the photometric or radiometric characteristic on a spherical surface around the radiation centroid of the radiation source, - wherein the sensor or the radiation source is attached to a six-axis articulated robot, characterized in that - the robot is swivelled only about exactly one of its axes (A1, A6), specifically about the first axis or the sixth axis, within the scope of a measuring procedure during which measurement values are captured, which measurement values relate to the different emission angles (α, β, γ) within a considered plane of the system of planes (A, B, C) or different planes in the case of a considered emission angle (α, β, γ), - the robot is adjusted in respect of at least one further swivel axis (A5, A3) and the robot is subsequently swivelled anew about the exactly one swivel axis (A1, A6) for the purposes of measuring the photometric or radiometric characteristic in a different plane of the system of planes (A, B, C) or in the case of the different emission angle (α, β. γ), - the sensor or the radiation source is positioned by the robot prior to swivelling about the one swivel axis (A1, A6) in such a way that the radiation centroid of the radiation source is located on the swivel axis (A1, A6). - the emission direction of the photometric or radiometric characteristic is described by the use of a system of planes (A, B, C), the planes of which intersect at a line of intersection passing through the radiation centroid of the radiation source, and by the use of an emission angle (α, β, γ), which specifies the emission direction (α, β, γ) within a considered plane, - a certain plane of the plane system (A, B, C) and a certain emission angle (α, β, γ) within this plane is assigned to each measurement value of the photometric or radiometric characteristic, - the measurement is implemented by means of at least one sensor, which is suitable for measuring the radiation of the radiation source, and - either the sensor or the radiation source is moved within the scope of the measurement such that the sensor records measurement values which specify the photometric or radiometric characteristic on a spherical surface around the radiation centroid of the radiation source, - wherein the sensor or the radiation source is attached to a six-axis articulated robot, - the robot is swivelled only about exactly one of its axes (A1, A6), specifically about the first axis or the sixth axis, within the scope of a measuring procedure during which measurement values are captured, which measurement values relate to the different emission angles (α, β, γ) within a considered plane of the system of planes (A, B, C) or different planes in the case of a considered emission angle (α, β, γ), - the robot is adjusted in respect of at least one further swivel axis (A5, A3) and the robot is subsequently swivelled anew about the exactly one swivel axis (A1, A6) for the purposes of measuring the photometric or radiometric characteristic in a different plane of the system of planes (A, B, C) or in the case of the different emission angle (α, β. γ), - the sensor or the radiation source is positioned by the robot prior to swivelling about the one swivel axis (A1, A6) in such a way that the radiation centroid of the radiation source is located on the swivel axis (A1, A6).