Optical characteristic measuring apparatus

Details Optical characteristic measuring apparatus Optical characteristic measuring apparatus

1998-05-13

1999-07-27

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 300

Patent

active

059299703

ABSTRACT:
In the present invention, an illuminating optical system illuminates an infinitesimal domain on an object to be examined using light rays emitted from an illuminating light source, a light receiving optical system receives light rays reflected back from the object to be examined and guides the reflected light rays to a light receiving unit, a converting member separates the reflected light rays into at least five regions and, in the regions, converges the light rays through a converging operation and transmits the light rays through a transmitting operation, the light receiving unit receives a plurality of light rays converted at the converting member, a display unit forms an image of the object to be examined on the basis of the light rays which have undergone the transmitting operation from the converting member and have been obtained at the light receiving unit, and an optical characteristic arithmetic unit determines optical characteristics of the object to be examined on the basis of an inclination angle of the light rays which have undergone the converging operation from the converting member and have been obtained at the light receiving unit.

REFERENCES:
patent: 4598984 (1986-07-01), Rol
patent: 5768025 (1998-06-01), Togino et al.

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