Title:
DYNAMIC VISUAL ACUITY MEASURING DEVICE AND DYNAMIC VISUAL ACUITY MEASURING METHOD
Document Type and Number:
Japanese Patent JP2018126421
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide technique that can measure reaction of a subject by moving a visual recognition object in the horizontal direction and also in any direction.SOLUTION: A dynamic visual acuity measuring device includes a projector for projecting an index image pattern, a reflection mirror for reflecting light from the projector, a screen for receiving the light from the reflection mirror and displaying the index image pattern, a movable enclosure for maintaining and holding a relative position of the projector, the reflection mirror and the screen, a fixed enclosure for supporting the movable enclosure, and a rotary shaft for rotatably connecting the movable enclosure to the fixed enclosure. In this device, the index image pattern displayed on a screen is moved to one direction by displacing the reflection mirror, and the moving direction of the index image pattern is changed by rotating the rotary shaft in a coordinate system fixed to the fixed enclosure.SELECTED DRAWING: Figure 2
Inventors:
KANDORI AKIHIKO
Application Number:
JP2017022999A
Publication Date:
August 16, 2018
Filing Date:
February 10, 2017
Export Citation:
Assignee:
MAXELL HOLDINGS LTD
International Classes:
A61B3/028
Domestic Patent References:
| JPH11164815A | 1999-06-22 | |||
| JP2013500836A | 2013-01-10 | |||
| JP2009092728A | 2009-04-30 | |||
| JP2004004276A | 2004-01-08 | |||
| JP2010048897A | 2010-03-04 |
Foreign References:
| KR20090110697A | 2009-10-22 |
Attorney, Agent or Firm:
Aoritsu patent business corporation