OPTOMETRIC MODEL - Kyoto Science Co., Ltd.

Title:

OPTOMETRIC MODEL

Document Type and Number:

Japanese Patent JP3429274

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide an optometric model which is equipped with a cornea section, a pupil section and ocular fundus chart slot which are constituted with lenses and enables a user to make natural optometric training accompanied by the expansion and contraction of the pupil.
SOLUTION: The front in the central part of the ocular fundus chart slot 12 is projectingly provided with a guide ring and a lens 31 is arranged in front thereof apart a spacing. A movable body 22 extended with a soft rubber film 25 pierced with a small hole at its center is arranged on the outer side of the guide ring and the rubber film is made to abut on the front end of the guide ring. The model is provided with an operation means of moving the movable body forward and backward in the state of positioning the small hole on a line connecting the guide ring and the center of the lens.

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Inventors:

Hidenobu Katayama
Hiroyuki Yamauchi

Application Number:

JP2000394141A

Publication Date:

July 22, 2003

Filing Date:

December 26, 2000

Export Citation:

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Assignee:

Kyoto Science Co., Ltd.

International Classes:

G09B23/28; A61F9/007; (IPC1-7): G09B23/28; A61F9/007

Domestic Patent References:

JP8220608A
JP6327632A

Attorney, Agent or Firm:

Masanori Hida

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