Patent ID: 6891618
Filing Date: 2005-05-10
Classification: G01J,G01N

Abstract:
1. An optical measurement instrument for measuring samples, comprising an illumination source ( 211 ) for forming an excitation beam, a detector ( 231 a ) for detecting an emission beam, an interface ( 218 , 223 , 233 a , 233 b, 238 ) for a changeable optical module ( 240 ) with a purpose of directing the excitation beam received from the illumination source ( 211 ) into the sample ( 281 ) and/or directing an emission beam received from the sample ( 281 ) to a detector ( 231 a ), characterized in that the interface further comprises means ( 238 , 233 b ) for adapting to at least one of said beams being transmitted through an aperture free from optical surfaces located on a wall of an optical module, and means for focusing said beam in said aperture.