| 摘要 |
An optical instrument comprising an eye's refractive power measuring optotype optical system (50) for projecting an eye's refractive power optotype in order to measure the refractive power of an eye (E) to be examined, a fixed optotype projecting optical system (10) for fixing/fogging the eye (E), an observing optical system (40) for observing the eye (E), a light receiving optical system (60), a ring sheet (30) and an infrared LED (34) for projecting a cornea-shaped optotype used to measure the corneal shape of the eye (E), a ring sheet (80) and an infrared LED (84) for projecting light to the center of the cornea via an object lens (22), and an alignment optotype projection optical system (70), whereby it is possible to project part of the cornea-shaped optotype onto the cornea (Ec) of the eye to be examined via the object lens (22) of the observing optical system (40) for observation.
|
