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US 5,629,747 AGranted
Hand-held ophthalmological apparatus having a retractable forehead contact member
AssigneeNikon Corporation
InventorNobuyuki Miyake
Life of this patent
Estimating the term…
Abstract
A hand-held ophthalmological apparatus comprises a measuring unit for measuring an examinee's eye, a hand unit attached to the measuring unit and held by a measurer and a forehead contact member for contacting a forehead of the examinee. The apparatus maintains a relative positional relationship between the measuring unit and the examinee's eye during a measurement.
Claims5
A hand-held ophthalmological apparatus comprising:
- a measuring unit for measuring a characteristic of an eye of an examines, said measuring unit having a housing portion;
- a hand unit, attached to said measuring unit, for being held by an operator;
- a forehead contact member for contacting a forehead of the examines, said forehead contact member being supported by a support member that is extendable and retractable relative to said housing portion, and said housing portion having a recessed portion for receiving said forehead contact member when said support member is in a retracted state.
A hand-held ophthalmological apparatus comprising:
- an observing unit for observing an eye of an examinee;
- a hand unit, attached to said observing unit, for being held by an operator;
- a forehead contact member that is morale relative to said observing unit between an extended position and a retracted position;
- a biasing member for biasing said forehead contact member toward the extended position;
- and
- a mechanism for automatically, releasably locking said forehead contact member at the retracted position.
3 more elements
Dependencies are inferred from the claim text.