Patent ID: 7256880
Filing Date: 2007-08-14
Classification: G01J

Abstract:
1. A goniophotometer for measurement of photometric, spectroradiometric and/or colorimetric variables of the optic radiation from a light/radiation source which is held at a measurement position by a measurement object holder, the goniometer having an appliance unit with a rotating arm mounted to a main drive, the rotating arm having a rotation axis and two limbs which are angled with respect to one another, each limb having a pivoting arm which is pivotably mounted to an end section of the limb, each pivoting arm having a pivoting axis and a measurement head which points at the light/radiation source, the pivoting axes of the pivoting arms and the rotation axis of the rotating arm intersecting at the measurement position of the light/radiation source, and in which case the pivoting arms are pivoted by means of a pivoting drive between a pivoted-in pole position, in which the measurement head of the pivoting arm is located on the rotation axis, and a pivoted-out equatorial position, in which the measurement head of the pivoting arm is guided around the light/radiation source along an orbital path with a maximum diameter.