Patent ID: 6507403
Filing Date: 2003-01-14
Classification: G01N

Abstract:
A gloss sensor for optically measuring the gloss of a sample surface, the gloss sensor comprising:a light source; a first collimator for receiving the light source to form a collimated light beam, wherein the collimated light beam is emitted from a first end of the first collimator; a first detector within the first collimator for developing a reference signal; a beam splitter disposed adjacent the first end of the collimator, wherein the beam splitter divides the collimated beam into a first beam and a second beam; a reflection device for receiving the second beam; a first mirror, positioned adjacent to a first window, to reflect the first beam onto a surface to be measured, the first mirror further positioned to receive the second beam reflected from the reflection device; a second mirror, positioned adjacent to a second window, to receive the first beam reflected from the surface to be measured and to receive the second beam reflected by the first mirror through the first window and the second window, wherein the second mirror is positioned at an angle to reflect the second beam back to the reflection device; a second collimator positioned to receive the first beam reflected from the second mirror; a second detector disposed within the second collimator, wherein the second detector is adapted to receive the first beam; and a third detector disposed adjacent to the reflection device, wherein the third detector is adapted to receive the second beam.