Patent ID: 9632023
Date: 2017-04-25
CPC Classifications: G01N

Claim:
1. A V-block refractometer that measures a refractive index of a sample by irradiating the sample with measurement light through a V-block prism, the refractometer comprising: a collimator lens that allows measurement light to be incident on the V-block prism after converting the measurement light into parallel light; a telemeter lens that converges the measurement light passing through the V-block prism; a detector that detects the measurement light from the telemeter lens; a collimator lens holding member that is provided to be rotatable about a predetermined first rotation shaft for holding the collimator lens at an eccentric position relative to the first rotation shaft; and a motor that changes an incident angle of the measurement light incident on the V-block prism from the collimator lens by rotating the collimator lens holding member about the first rotation shaft.