Measurement geometry

This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.

Measurement geometry describes the spatial arrangement of the measurement object and measurement device during the measurement. It can be decisive for the result of the measurement.

It describes in the color measurement z. B. according to ISO 13655 ("spectral measurement and colorimetric calculation for graphic objects") the type of beam guidance from the light source to the receiver surface, more precisely the angle of incidence of light on the sample and the viewing angle of the observer (or measuring device ). The angles are given perpendicular to the sample. A measurement geometry of 45 ° / 0 ° means that the light is incident at an angle of 45 ° to the perpendicular of the sample (i.e. also 45 ° to the sample) and the observer looks exactly perpendicularly at the sample. The measurement geometry must always be specified, since different surfaces have different reflection properties, especially iridescent fabrics or shiny surfaces.

Web links

How color measuring devices see: The right choice of measurement geometry