Back to results
US 9,788,715 B2Granted
Optotype presenting apparatus
AssigneeTopcon Corporation
InventorTomohiro Sakurada
Life of this patent
Estimating the term…
Abstract
An optotype presenting apparatus that is capable of carrying out examinations accurately is provided. An optotype presenting apparatus includes a display and a controller. The display includes left eye optotype display regions and right eye optotype display regions. The left eye optotype display regions output light having a first polarization axis. The right eye optotype display regions output light having a second polarization axis orthogonal to the first polarization axis. The left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines. The controller is capable of displaying a plurality of optotypes selectively on the display. Further, the controller controls the display based on a type of an optotype displayed on the display to change display luminance.
Claims19
An optotype presenting apparatus comprising:
- a display that includes left eye optotype display regions that output light having a first polarization axis and right eye optotype display regions that output light having a second polarization axis orthogonal to the first polarization axis, wherein the left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines;
- and
- a controller that
- provides at least one visual acuity test configured for a patient with both eyes open by displaying on the display an optotype in only one of the left eye optotype display regions and the right eye optotype display regions for a monocular test and by displaying optotypes in both of the left eye optotype display regions and the right eye optotype display regions for a binocular test,
- controls, based on a type of the optotype displayed in one of the left eye optotype display regions and the right eye optotype display regions, a backlight of the display to change a display luminance of one or more optotypes for the monocular test, and
- controls, based on types of optotypes displayed in both of the left eye optotype display regions and the right eye optotype display regions, the backlight of the display to change a display luminance of one or more optotypes for the binocular test.
3 more elements
An optotype presenting apparatus comprising:
- a display that includes left eye optotype display regions that output light having a first polarization axis and right eye optotype display regions that output light having a second polarization axis orthogonal to the first polarization axis, wherein the left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines;
- an examination type designating part that designates a type of an examination;
- and
- a controller that
- provides at least one visual acuity test configured for a patient with both eyes open by displaying on the display an optotype in only one of the left eye optotype display regions and the right eye optotype display regions for a monocular test and by displaying optotypes in both of the left eye optotype display regions and the right eye optotype display regions for a binocular test,
- controls, based on a type of the optotype displayed in one of the left eye optotype display regions and the right eye optotype display regions, a backlight of the display to change a display luminance of one or more optotypes for the monocular test, and
- controls, based on types of optotypes displayed in both of the left eye optotype display regions and the right eye optotype display regions, the backlight of the display to change a display luminance of one or more optotypes for the binocular test.
4 more elements
An optotype presenting apparatus comprising:
- a display that includes left eye optotype display regions that output light having a first polarization axis and right eye optotype display regions that output light having a second polarization axis orthogonal to the first polarization axis, wherein the left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines;
- an optical part that is capable of placing a left eye polarizing member having a polarization axis parallel to the first polarization axis and a right eye polarizing member having a polarization axis parallel to the second polarization axis at locations between the display and eyes;
- and
- a controller that
- provides at least one visual acuity test configured for a patient with both eyes open by displaying on the display an optotype in only one of the left eye optotype display regions and the right eye optotype display regions for a monocular test and by displaying optotypes in both of the left eye optotype display regions and the right eye optotype display regions for a binocular test,
- controls, based on a type of the optotype displayed in one of the left eye optotype display regions and the right eye optotype display regions, a backlight of the display to change a display luminance of one or more optotypes for the monocular test, and
- controls, based on types of optotypes displayed in both of the left eye optotype display regions and the right eye optotype display regions, the backlight of the display to change a display luminance of one or more optotypes for the binocular test.
4 more elements
Dependencies are inferred from the claim text.