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US 9,307,900 B2Granted
Ophthalmic device, and method and program for controlling the same
AssigneeCanon Kabushiki Kaisha
InventorHirofumi Yoshida
Life of this patent
Estimating the term…
Abstract
A light source generates light to fixate a gaze of an eye to be examined, while a scanning unit performs main-scanning and sub-scanning on a fundus of the eye to be examined with the light from the light source.
Claims19
An ophthalmic device comprising:
- a light source configured to generate light to fixate a gaze of an eye to be examined;
- a scanning unit configured to perform main-scanning and sub-scanning on a fundus of the eye to be examined with the light from the light source;
- and
- a control unit configured to control the scanning unit in order to make a length of an irradiated region in a direction of the sub-scanning equal to or longer than a scanning interval of the main-scanning in the direction of the sub-scanning, wherein the irradiated region in the fundus is irradiated with the light from the light source.
1 more element
An ophthalmic device comprising:
- a light source configured to generate light to fixate a gaze of an eye to be examined;
- a scanning unit configured to perform main-scanning and sub-scanning on a fundus of the eye to be examined with the light from the light source;
- and
- a control unit configured to control the light source, according to a position of the main-scanning and a position of the sub-scanning, to turn the light source on and off and to change the quantity of light emitted onto the fundus of the eye to be examined when the light source is in a lighting state.
1 more element
A method for controlling an ophthalmic device comprising:
- generating light to fixate a gaze of an eye to be examined;
- and
- performing main-scanning and sub-scanning on a fundus of the eye to be examined with the light,
- wherein a length in a direction of the sub-scanning of an irradiated region, in which the fundus is irradiated with the light, is made equal to or longer than a scanning interval of the main-scanning in the direction of the sub-scanning.
1 more element
A method for controlling an ophthalmic device comprising:
- generating light to fixate a gaze of an eye to be examined;
- and
- performing main-scanning and sub-scanning on a fundus of the eye to be examined with the light:
- turning, according to a position of the main-scanning and a position of the sub-scanning, the light on and off and changing the quantity of light emitted onto the fundus of the eye to be examined.
1 more element
Dependencies are inferred from the claim text.