Invention Grant
- Patent Title: Ophthalmic apparatus
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Application No.: US15188224Application Date: 2016-06-21
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Publication No.: US10039448B2Publication Date: 2018-08-07
- Inventor: Takashi Sudo
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Carter, Deluca, Farrell & Schmidt, LLP
- Priority: JP2015-125372 20150623
- Main IPC: A61B3/14
- IPC: A61B3/14 ; A61B3/12 ; A61B3/10 ; G02B27/12

Abstract:
An ophthalmic apparatus capable of suppressing ghost, and securing a necessary amount of working distance even when an eye to be inspected has a diopter on a myopia side, includes: a large area image acquisition unit acquiring a large area image of a fundus of the eye to be inspected at a low resolution based on return light of first measuring light from the fundus; a small area image acquisition unit acquiring a small area image of the fundus at a high resolution based on return light of second measuring light from the fundus; and a dichroic prism combining the first measuring light and the second measuring light, and dividing the return light, in which the large area image acquisition unit includes an optical member having a positive optical power, which is arranged at a position opposite to the eye to be inspected with respect to the dichroic prism.
Public/Granted literature
- US20160374552A1 OPHTHALMIC APPARATUS Public/Granted day:2016-12-29
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