Patent ID: 9427150
Filing Date: 2016-08-30
CPC Classification: A61B,G02B

Claim Text:
1. An optical tomographic imaging apparatus configured to acquire a tomographic image of a subject's eye based on light generated by combining return light from the subject's eye irradiated by measurement light via a first lens, and reference light corresponding to the measurement light, the optical tomographic imaging apparatus comprising: a scanning unit disposed on an optical path of the measurement light, and configured to scan the measurement light on a fundus of the subject's eye; a second lens disposed on the optical path of the measurement light between the scanning unit and the first lens; a first optical path branching unit disposed on the optical path of the measurement light between the first lens and the second lens, and configured to branch from the optical path of the measurement light to an optical path of an anterior eye observation optical system for observing an anterior eye of the subject's eye; and a second optical path branching unit disposed on the optical path of the measurement light between the first lens and the second lens, and configured to branch from the optical path of the measurement light to an optical path of a fundus observation optical system for observing the fundus, wherein the optical path of the anterior eye observation optical system is located on a reflection optical path of the first optical path branching unit, wherein the optical path of the fundus observation optical system is located on a transmission optical path of the first optical branching unit and a transmission optical path of the second optical path branching unit, wherein the optical path of the measurement light is located on the transmission optical path of the first optical path branching unit and a reflection optical path of the second optical path branching unit, and wherein the second lens and the scanning unit are disposed such that an angle at which the measurement light scanned by the scanning unit is incident on the first optical path branching unit and the second optical path branching unit is substantially maintained.