Patent · US Active

Method and apparatus for determining or classifying the surface colour of at least partly translucent materials

US12326362B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

ams Sensors Germany GmbH · DE

Inventors

Gunter Siess · Eindhoven, NL
Holger Pless · Tauberbischofsheim, DE
Volker Mannheim · Villach, AT

Key dates

Filing date	Mar 16, 2020
Grant date	Jun 10, 2025
Priority date	—
Expiry date	Oct 14, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/474
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus for determining a colour of a translucent material. The apparatus comprises a first light source configured to illuminate a translucent material at a first surface location, a second light source configured to illuminate the translucent material at a second surface location spaced apart from said first surface location, and a light spectral sensor configured to detect light at said first surface location. The apparatus is configured to operate the first and second light sources alternately, and such that light detected by the light spectral sensor originating from said first source is principally light diffusely reflected from said first surface location, whilst light detected by the detector originating from said second source is principally light scattered by scattering centres in the interior of the translucent material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.