Title:
DYNAMIC VISUAL ACUITY MEASURING DEVICE AND DYNAMIC VISUAL ACUITY MEASURING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/147277
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a technique which enables the reaction of a subject to be measured when a visual target object is moved in an arbitrarily defined direction, not only in a horizontal direction. This dynamic visual acuity measuring device is provided with: a projector which projects an index image pattern; a reflecting mirror which reflects light from the projector; a screen which receives the light from the reflecting mirror and displays the index image pattern; a movable casing which holds and maintains the relative positions of the projector, the reflecting mirror and the screen; a fixed casing which supports the movable casing; and a rotating shaft linking the movable casing rotatably to the fixed casing. With this device, the index image pattern displayed on the screen is moved in one direction by displacing the reflecting mirror, and the direction of movement of the index image pattern in a coordinate system fixed to the fixed casing is changed by rotating the rotating shaft.
Inventors:
KANDORI AKIHIKO (JP)
Application Number:
PCT/JP2018/004010
Publication Date:
August 16, 2018
Filing Date:
February 06, 2018
Export Citation:
Assignee:
MAXELL LTD (JP)
International Classes:
A61B3/028
Foreign References:
| JP2005253503A | 2005-09-22 | |||
| JP2007020919A | 2007-02-01 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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