PROBLEM TO BE SOLVED: To provide a fundus observation device performing excellent retinal image observation by suppressing the generation of a halation or a ghost by the reflection of illumination light on the surface of a crystalline lens.SOLUTION: In a fundus observation device, an observation window 11 and an illumination window 7 are disposed in the tip (2a) of a tip body 2, a diffusing plate 11 diffusing passing light is disposed in contact with the illumination window 7 such that the diffusing plate 11 does not contact with the observation window 1, and circularly polarizing plate 12 is disposed ahead of the illumination window 7 such that the circularly polarizing plate 12 contacts with at least the diffusing plate 11 and the observation window 1.COPYRIGHT: (C)2014,JPO&INPIT【課題】水晶体表面における照明光の反射によるハレーションやゴーストの発生を抑制して、良好な網膜像観察を行うことができる眼底観察装置を提供すること。【解決手段】観察窓11と照明窓7が先端本体2の先端(2a)に配置されていて、通過する光を拡散させる拡散板11が、観察窓1に面しないように照明窓7に面して配置されると共に、円偏光板12が、照明窓7よりも前方で、少なくとも拡散板11及び観察窓1と面するように配置されている【選択図】図1
