SPECTRAL REFLECTANCE FACTOR MEASUREMENT DEVICE FOR SMALL LENS

摘要

Disclosed is a spectral reflectance factor measurement device for a small lens. According to the present invention, the spectral reflectance factor measurement device for a small lens to measure a relative reflectance factor on a premeasured reference sample comprises: a light source (200); a collimate lens (202) to convert light emitted from the light source (200) to parallel light; a half mirror (210) to reflect the light emitted from the collimate lens (202); an objective lens (230) to collect the reflected light to a sample (220); and a spectroscope (240) to detect the light reflected from the sample (220). The spectral reflectance factor measurement device for a small lens comprises a central light removal lens (24) to remove a central light of the light emitted from the collimate lens (202). The central light removal lens comprises: a first axicon lens (244) having a flat incidence side (240) to receive the light emitted from the collimate lens (202) and a conical outlet side (242); and a second axicon lens (248) installed while a convex surface faces a convex surface of the first axicon lens (244) wherein a surface (246) relevant to a predetermined diameter from the center is a plane.;COPYRIGHT KIPO 2016