Opthalmic apparatus having lowered consumption of electric power

Details Opthalmic apparatus having lowered consumption of electric power Opthalmic apparatus having lowered consumption of electric power

Filed on

1994-10-28

Date issued

1996-10-08

Examiner

Sikes, William L.

Patent Class

Optics: eye examining, vision testing and correcting

SubClass

Eye examining or testing instrument

SubSubClass

Objective type

Other Related Categories

351221, A61B 314

Type

Patent

Status

active

Patent number

055636675

Description

ABSTRACT:
An ophthalmic apparatus for measuring an eye of an examinee, includes a device for detecting whether the eye is located within a predetermined area with respect to the apparatus, an interval time producing device for producing a prescribed interval time, a power supply device for supplying power intermittently to the detecting device in accordance with signals for the interval time producing device, and power supply signal generating device for generating a signal to supply a power required by the ophthalmic apparatus when the detecting device judges that the eye exists within the predetermined area.

REFERENCES:
patent: 4863259 (1989-09-01), Schneider et al.

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