Title:
視覚ダイナミックレンジ計測装置及び方法
Document Type and Number:
Japanese Patent JP6919141
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device for easily performing measurement of a visual dynamic range which contributes to evaluation of photophobia or the like or a measurement method of a visual dynamic range capable of executing easily the measurement thereof.SOLUTION: A visual dynamic range measurement device of the invention comprises control means for controlling display means 2 and input means 4, in which the display means 2 displays a gradation target 20 which is a target in which brightness gradually changes from a brightest part to a darkest part, the input means 4 receives at least one of an input of a brightest part supposition boundary which is a boundary between a part which is supposed so that appearance is same to that in the brightest part for a subject, and a part which is not supposed so that appearance is same to that in the brightest part for a subject, and an input of a darkest part supposition boundary which is a boundary between a part which is supposed so that appearance is same to that in the darkest part for a subject and a part which is not supposed so that appearance is same to that in the darkest part, in the gradation target 20, and the control means calculates a visual dynamic range measurement value based on at least one of the position of the brightest part supposition boundary and the position of the darkest part supposition boundary.SELECTED DRAWING: Figure 2
Inventors:
Satoshi Nakadomari
Eiji Suzuki
Eiji Suzuki
Application Number:
JP2017094125A
Publication Date:
August 18, 2021
Filing Date:
May 10, 2017
Export Citation:
Assignee:
Public Interest Incorporated Association Next Vision
Tokai Optical Co., Ltd.
Tokai Optical Co., Ltd.
International Classes:
A61B3/06
Domestic Patent References:
| JP2008520296A |
Foreign References:
| GB2514529A |
Other References:
仲泊 聡 他,視覚ダイナミックレンジ計測法の開発,視覚障害リハビリテーション研究発表大会抄録集,2016年 5月15日,Vol. 25th,P. 26
Attorney, Agent or Firm:
Yoshiki Ishida
Kiyotaka Sonoda
Kiyotaka Sonoda