Ophthalmic instrument having multiple measurement units

Abstract

An ophthalmic instrument includes a carrier positionable relative to a test subject, and first and second measurement units mounted on the carrier by corresponding first and second parallelogram linkages. The first measurement unit, for example an autorefractor/keratometer, performs a first type of ophthalmic measurement, and is guided by the first parallelogram linkage to move relative to the carrier simultaneously in forward and downward directions from an idle position to a measurement position. The second measurement unit, for example a tonometer, performs a second type of ophthalmic measurement, and is guided by the second parallelogram linkage to move relative to the carrier simultaneously in forward and upward directions from an idle position to a measurement position. The first and second measurement units may each have a respective optical axis which aligns with a fixed measurement axis of the carrier when the measurement unit is in its measurement position.

Dependencies are inferred from the claim text.