Abstract: According to an example aspect of the present invention, there is provided an apparatus configured to control elements of an eye tracking apparatus to perform plural determinations of rotation of an eye in an eye socket, determine a time period based at least in part on a determination based on the rotation of the eye, wherein the time period begins as a response to a rotation of the eye falling below a threshold, and switch at least a part of the eye tracking apparatus to a power saving state as a response to the determined time period beginning, and switch the at least part of the eye tracking apparatus out of the power saving state as a response to the determined time period ending.

Abstract: According to an example aspect of the present invention, there is provided a near-eye ocular device, the near-eye ocular device comprising an ocular pathway enclosed by an enclosure, comprising at least one light emitter, configured to illuminate an eye of a user to produce corneal glints on the eye when the user is using the near-eye ocular device, and at least one sensor configured to obtain an image of the eye of the user when the user is using the near-eye ocular device.

Abstract: According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to determine a reference point in a three-dimensional space based at least in part on locations of first and second features of a user's eye and on the user's gaze distance, and perform a mapping of the reference point into a viewed scene of a near-to-eye optical device to obtain an estimated gaze point and/or gaze direction of the user who is using the near-to-eye optical device, the mapping being based at least in part on calibration information associated with the user.

Abstract: A method and apparatus for determining gaze direction information, includes a light source for forming illuminating light to an eye region of a user, and optical element(s) configured to guide the illuminating light from the light source to the eye region. The illuminating light is dynamically adjustable to generate a dynamic light beam on the eye region, and a sensor is configured to capture reflected light on the eye region and generate reflection eye data. The apparatus can maintain user profile information, adjust spectral power distribution of the light source based on the user profile information, receive the reflection eye data, and generate the gaze direction information based on the reflection eye data.

Abstract: A method and apparatus for determining gaze direction information, includes a light source for forming illuminating light to an eye region of a user, and optical element(s) configured to guide the illuminating light from the light source to the eye region. The illuminating light is dynamically adjustable to generate a dynamic light beam on the eye region, and a sensor is configured to capture reflected light on the eye region and generate reflection eye data. The apparatus can maintain user profile information, adjust spectral power distribution of the light source based on the user profile information, receive the reflection eye data, and generate the gaze direction information based on the reflection eye data.

Abstract: A method and apparatus for determining gaze direction information, includes a light source for forming illuminating light to an eye region of a user, and optical element(s) configured to guide the illuminating light from the light source to the eye region. The illuminating light is dynamically adjustable to generate a dynamic light beam on the eye region, and a sensor is configured to capture reflected light on the eye region and generate reflection eye data. The apparatus can maintain user profile information, adjust spectral power distribution of the light source based on the user profile information, receive the reflection eye data, and generate the gaze direction information based on the reflection eye data.