Abstract
Recently, the research to measure the optical characteristic of the biological tissue by nondestructive is paid to attention. In the biological sample, the intrinsic birefringence that originates in an intramolecular atomic arrangement, and the birefringence cased by the photoelasticity because of the transformation of the living body cell tissue are observed. In this study, a birefringence optical microscope to observe such a biological sample is developed. In addition, this paper describes about birefringence image obtained by actually measuring.