Title:
VISUAL TARGET PRESENTATION DEVICE
Document Type and Number:
Japanese Patent JP2021129813
Kind Code:
A
Abstract:
To provide a visual target presentation device capable of displaying a visual target by a desired contrast against a background.SOLUTION: A target presentation device includes a display unit 12a capable of changing a gradation level, which displays a visual target with a predetermined contrast against a background according to the gradation level, and a control unit 16 that sets a gradation level of a visual target region and controls the contrast of the visual target displayed in the display unit 12a. The control unit 16 obtains a target value of the contrast and a peripheral temperature of the display unit 12a, and based on the target value and the peripheral temperature, sets the gradation level of the visual target region.SELECTED DRAWING: Figure 1
Inventors:
YANAGI HIDEKAZU
Application Number:
JP2020027037A
Publication Date:
September 09, 2021
Filing Date:
February 20, 2020
Export Citation:
Assignee:
TOPCON CORP
International Classes:
A61B3/06
Attorney, Agent or Firm:
Cleo International Law & Patent Office