Coaxial diffuse reflectance read head

Details Coaxial diffuse reflectance read head Coaxial diffuse reflectance read head

G - Physics

01

N

G01N 21/47 (2006.01)

Patent

CA 2571112

Improved performance in reflectance photometry is obtained by employing an optical fiber to direct collimated light to a test area and to return both diffuse and specular light from the test area. Specular light is prevented from reaching a light detector by a spatial filter, while diffuse light is collected and measured.

Selon l'invention, on améliore la performance en photométrie par réflectance en utilisant une fibre optique pour orienter une lumière collimatée vers une zone de test, puis renvoyer tant la lumière diffuse que la lumière spéculaire depuis la zone de test. On empêche la lumière spéculaire d'atteindre un détecteur de lumière à l'aide d'un filtre spatial pendant que la lumière diffuse est recueillie et mesurée.

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