MODELE OCULAIRE PRODUISANT UNE FIGURE DE SPECKLE AYANT UN RAPPORT LUMIERE/OBSCURITE REDUIT POUR SONT UTILISATION AVEC UN SYSTEME DE MESURE OPTIQUE POUR LE DIAGNOSTIC DE LA CATARACTE
COPLAND, RICHARD J.,NEAL, DANIEL R.,RAYMOND, THOMAS D.,XIONG, WEI,PULASKI, PAUL D.,FARRER, STEPHEN W.,VIDAL, CARMEN CANOVAS
申请号：
CA2969513
公开号：
CA2969513A1
申请日:
2014.12.03
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
A system includes a model eye and an optical measurement instrument, which includes: a corneal topography subsystem； a wavefront sensor subsystem； and an eye structure imaging subsystem. The subsystems may have a common fixation axis, and be operatively coupled to each other via a controller. The optical measurement instrument may perform measurements of the model eye to verify correct operation of the optical measurement instrument for measuring one or more characteristics of a subject's eye. The model eye may include an optically transmissive structure having a front curved surface and an opposite rear planar surface, and a material structure provided at the rear planar surface of the optically transmissive structure and having a characteristic to cause a speckle pattern of a portion of a coherent light beam that is directed back out the front curved surface of the optically transmissive structure to have a bright-to-dark ratio of less than 2: 1.
