Ophthalmic apparatus for photographing a section of an anterior part of an eye

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United States of America Patent

PATENT NO 5757462
SERIAL NO

08850291

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An ophthalmic apparatus for photographing a section of an anterior part of an eye having slit light projection optical system for projecting a slit light onto an anterior part of an eye to be examined, and section photographing device for photographing a sectional image of the anterior part of the eye where is cut optically by the slit light, including section photographing optical system which is disposed based on the Scheimpflug's principle, the apparatus providing first target projection optical system for projecting a first alignment target onto a cornea of the examined eye, front photographing device for photographing a first alignment target image projected onto the cornea of the examined eye from the front side, first displaying device for displaying an image which is photographed by the front photographing device, second target projection optical system for projecting a second alignment target from a slanting direction corresponding to the examined eye, and second displaying device for displaying a second alignment target image which is photographed by said section photographing device, thereby the propriety of alignment may being judged by observing the displaying condition of the first and second alignment target images respectively on the first and second display device.

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Patent Owner(s)

  • NIDEK CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nanjo, Tsuguo Toyohashi, JP 20 409

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