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Ophthalmic apparatus and alignment method for ophthalmic apparatus
专利权人:
发明人:
Masashi Nakajima
申请号:
US15686223
公开号:
US10123700B2
申请日:
2017.08.25
申请国别(地区):
US
年份:
2018
代理人:
摘要:
An ophthalmic apparatus and method is provided for quickly and accurately aligning a measurement optical system with the vertex of the cornea of a subjects eye. The ophthalmic apparatus comprises a main body, an infrared detection system, a support portion, a driving unit, a visible light irradiation system placed coaxially with the apparatus main body and configured to irradiate the subjects eye, at least two photographing devices configured to substantially simultaneously photograph the subjects eye from different directions, a first alignment detection unit configured to acquire Purkinje images of the subjects eye, originating from infrared light, from at least two photographed images of the subjects eye and detect a position of the subjects eye from the Purkinje images, a second alignment detection unit, and a drive control unit to align the apparatus with the subjects eye.
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