Ryusyo Industrial Co., Ltd.

Masakatsu Iwamoto

An optical measuring apparatus for examining an eye which automatically aligns the optical axes of said apparatus and the eye with each other and focusing the light emitted by said apparatus on the eye. When these operations are accomplished, the projection of a measuring light is automatically started. The apparatus includes axes-aligning-focusing optical system. The optical system has a pair of optical axes-aligning light sources. Two images of beams emitted by the respective optical axes-aligning light sources and reflected by the cornea of the eye are detected by a light receiving sensor when the beams are focused substantially on the eye. Discriminating devices discriminate whether or not the optical axes of the two cornea-reflected images detected by the light receiving sensor align with the optical axis of the eye in Y-direction of the light receiving sensor. Discriminating devices discriminate whether or not the optical axes of the two cornea-reflected images detected by the light receiving sensor align with the optical axis of the eye in X-direction of the light receiving sensor. It is not until the optical axes-aligned and in-focus states are obtained that the measuring light is projected on the eye.

Optical measuring apparatus for examining eye

An apparatus for measuring the refractive power of eye having an optical measuring device provided with a measuring optical system and a main body for calculating the refractive power of eye based on data transmitted thereto from the optical measuring device. The optical measuring device is separate from the main body so as to be hand-movable. An examiner adjusts the position of the optical measuring device with respect to the patient's eye irrespective of the patient's posture.

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Kagawa, Japan

Masakatsu Iwamoto