Patent ID: 9655507
Date: 2017-05-23
CPC Classifications: A61B,H04N

Claim:
1. A corneal imaging device comprising: an observation optical system configured to obtain an anterior segment front image of an eye, the observation optical system including an observation objective lens and an imager along a first optical axis; and an optical system configured to photograph a corneal portion of the eye, the optical system including: an illumination optical system configured to irradiate illumination light in a direction inclined with respect to the first optical axis toward a cornea; and a light receiving optical system configured to receive reflection light from the cornea by a photodetector, the reflection light leaving the cornea at an inclined angle with respect to the first optical axis, wherein the corneal imaging device includes a light-limiting part provided in an optical path of the optical system, the light-limiting part being configured to limit light asymmetrically with respect to a second optical axis of an optical path on which the light-limiting part is located, the light-limiting part is placed in a position other than a condensing point of the light, and the light-limiting part is configured to allow light having passed through a central part of an objective lens provided in the light receiving optical system to pass toward the photodetector, but asymmetrically limit light having passed through a peripheral part of the objective lens.