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1. (WO2018198839) OPHTHALMOLOGICAL IMAGING OPTICAL SYSTEM, OPHTHALMOLOGICAL IMAGING DEVICE, OPHTHALMOLOGICAL IMAGE ACQUISITION METHOD, AND OPHTHALMOLOGICAL IMAGE SYSTEM

Pub. No.:    WO/2018/198839    International Application No.:    PCT/JP2018/015613
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 14 01:59:59 CEST 2018
IPC: A61B 3/10
A61B 3/107
A61B 3/13
Applicants: NIKON CORPORATION
株式会社ニコン
Inventors: OHMURA, Yasuhiro
大村 泰弘
Title: OPHTHALMOLOGICAL IMAGING OPTICAL SYSTEM, OPHTHALMOLOGICAL IMAGING DEVICE, OPHTHALMOLOGICAL IMAGE ACQUISITION METHOD, AND OPHTHALMOLOGICAL IMAGE SYSTEM
Abstract:
The present invention aims to reduce the burden on a subject having an eye examination and to extensively examine inside the eye being examined. Light is reflected in order of incidence, from the pupil (Pp) side of an eye (12) being examined, by a first reflective surface (Mr01) having a center opening, after the spread of light flux has been suppressed by a first refractive surface. The light flux faces in a direction towards the eye (12) being examined and in a direction of convergence, is reflected by a second reflective surface (Mr02) in the opposite direction to the direction facing the eye (12) being examined, passes through the center opening of the first reflective surface, and an image of a pupil conjugate (Pcj) which is an image conjugate with the position of the pupil (Pp) of the eye (12) being examined is formed. Sufficient working distance is ensured and the first reflective surface (Mr01) can be more compact, as a result of the first refractive surface, and light flux separation is possible as a result of causing the light flux to pass through the opening in the second reflective surface (Mr02) and the first reflective surface (Mr01). As a result the optical system can be made smaller by having the first reflective surface (Mr01) in a concave shape and the second reflective surface (Mr02) in a convex shape.