| 摘要 |
A light-shielding member is provided at an optically conjugative position with an optical system composed of optical components (including a corneal convex mirror) interposed between an entrance pupil and the light-shielding member on an optical path of an illumination optical system in order to prevent a virtual image of a light source from being observed in an observation optical system. The position where the light-shielding member is located is the vicinity of an illumination field stop and closer to the eye to be examined than the illumination field stop. A size of the light-shielding member is theoretically determined by a product of a diameter of the entrance pupil of the observation optical system, and an observation magnification of the optical system composed of the corneal convex mirror and a relay lens.
|
