Controlling a two-dimensional mirror gimbal for purposes of iris scanning

A method performed by an iris scanning device for capturing images of irises of users, the method comprising:

• capturing an image of a face of a user of the iris scanning device by way of a first camera comprised by the iris scanning device;
• identifying facial features of the user based upon the image of the face of the user, the facial features of the user comprise a prediction location of the eye of the user;
• computing a desired angle between the ee of the user and a mirror mounted on a gimbal based on the facial features of the user, wherein the gimbal and the mirror are comprised by the iris scanning device;
• adjusting an orientation of the gimbal having the mirror mounted thereon based upon the facial features of the user such that an angle between the eye of the user and the mirror mounted on the gimbal is the desired angle;
• upon adjusting the orientation of the gimbal based upon the facial features of the user, capturing an image of the eye of the user by way of a second camera comprised by the iris scanning device, wherein the mirror mounted on the gimbal is oriented to cause the image of the eye of the user to be captured;
• identifying features of the eye of the user based upon the image of the eye of the user;
• determining whether the image of the eye of the user satisfies criteria based upon the features of the eye;
• generating a code based upon the image of the eye of the user when the image of the eye satisfies the criteria;
• and
• when the image of the eye does not satisfy the criteria:
• adjusting the orientation of the gimbal having the mirror mounted thereon based upon the features of the eye;
• and
• upon adjusting the orientation of the gimbal based upon the features of the eye, capturing a second image of the eye of the user by way of the second camera.

An iris scanning device, comprising:

• a first camera that is configured to:
• capture an image of a face of a user of the iris scanning device;
• a second camera that is configured to:
• capture a first image of an eye of the user subsequent to the image of the face of the user being captured;
• and
• capture a second image of the eye of the user subsequent to the first image of the eye of the user being captured, wherein an iris of the eye of the user is located in a central region of the second image of the eye of the user,
• a gimbal having a mirror mounted thereon;
• a facial feature detector that is configured to:
• identify facial features of the user based upon the image of the face of the user, the facial features of the user comprise a predicted location of the eye of the user;
• and
• identify features of the eye of the user based upon the first image of the eye of the user, and
• control circuitry that is configured to:
• subsequent to capture of the image of the face of the user by the first camera, adjust an orientation of the gimbal based upon the facial features of the user, wherein the first image of the eye of the user is captured upon the orientation of the gimbal being adjusted based upon the predicted location of the eye of the user, wherein the mirror mounted on the gimbal is oriented to cause the first image of the eye of the user to be captured;
• and
• subsequent to capture of the first image of the eye of the user by the second camera, adjust the orientation of the gimbal based upon the features of the eye of the user identified from the first image of the eye captured by the second camera, wherein the first image of the eye is determined to not satisfy criteria based upon the features of the eye, wherein the second image of the eye of the user is captured upon the orientation of the gimbal being adjusted based upon the features of the eye of the user, wherein the mirror mounted on the gimbal is oriented to cause the second image of the eye of the user to be captured, wherein the second image of the eye is determined to satisfy the criteria such that a code is caused to be generated based upon the second image of the eye of the user.