goniometer in English
goniometer in Dutch
A goniometer which can be used in making retro-reflection measurements in the CIE geometry is illustrated in Annex 1, figure 2.
For verification the following procedure shall be used: Each applied position is realized on the test goniometer with respect to a line joining the centre of reference and point HV on an aiming screen.
For verification the following procedure shall be used: 6.4.1. each applied position is realized on the test goniometer with respect to a line joining the centre of the light source and point HV on the aiming screen.
Parts of a system measured individually and having no "cut-off" shall be installed on the goniometer under the conditions specified by the applicant.
Representation of a goniometer mechanism embodying the CIE angular system for specifying and measuring retro-reflectors.
The colorimetric test shall be carried out on a goniometer table.
The reflector is brought back to its nominal angular position as defined in paragraph 6.2.2., and the goniometer is set back to its position of origin.
Any offset of the centre of reference of each lighting unit, with respect to the goniometer rotation axes, should be avoided.
Goniometer mechanism embodying the CIE angular system
in case of a category 1 or a driving beam bending mode: after having horizontally reaimed the relevant installation unit (by means of the goniometer for example) in the corresponding opposite direction.