Interface using eye tracking contact lenses
View Patent ↗Methods of eye gaze tracking are provided using magnetized contact lenses tracked by magnetic sensors and/or reflecting contact lenses tracked by video-based sensors. Tracking information of contact lenses from magnetic sensors and video-based sensors may be used to improve eye tracking and/or combined with other sensor data to improve accuracy. Furthermore, reflective contact lenses improve blink detection while eye gaze tracking is otherwise unimpeded by magnetized contact lenses. Additionally, contact lenses may be adapted for viewing 3D information.
1. A contact lens system for viewing 3D information, the contact lens system comprising:
material forming a lens of suitable size to fit a wearer's eye and extend over at least a portion of the sclera of the wearer's eye, wherein a portion of the material is configured to filter the 3D information to obtain a portion of the 3D information designated for the wearer's eye;
one or more reflective elements associated with the material forming the lens, the one or more reflective elements configured to reflect a predetermined portion of the electromagnetic spectrum;
one or more video-based sensors configured to track the one or more reflective elements, the one or more video-based sensors configured to generate and transmit tracking information associated with the tracking of the one or more reflective elements; and
a computing device configured to determine eye gaze information based on the tracking information, and configured to perform one or more actions using the eye gaze information, wherein the one or more actions are associated with the 3D information being viewed.
2. The contact lens system of claim 1 , wherein the lens has an optical zone and a peripheral zone.
3. The contact lens system of claim 2 , wherein the one or more reflective elements associated with the material forming the lens comprise a plurality of reflective elements clustered in a portion of the optical zone.
4. The wearable apparatus of claim 2 , wherein the one or more reflective elements associated with the material forming the lens comprise a set of circular bands distributed in the peripheral zone.
5. The wearable apparatus of claim 2 , wherein the one or more reflective elements associated with the material forming the lens comprise a set of reflective shapes distributed in the peripheral zone.
6. The contact lens system of claim 1 , wherein the portion of the material configured to filter 3D information to obtain a portion of the 3D information designated for the wearer's eye comprises at least one of a color filter layer associated with at least one of a plurality chromatically opposite colors, a polarization filter layer associated with at least one of a plurality of light polarizations, or a liquid crystal layer that obscures the optical zone to block a portion of the 3D information that is not designated for the wearer's eye.
7. The contact lens system of claim 1 , further comprising:
a second computing device configured to perform one or more actions based on the tracking information.
8. The contact lens system of claim 7 , further comprising:
a wearable apparatus, wherein the second computing device is connected to the wearable apparatus.
9. The contact lens system of claim 1 , further comprising:
a wearable apparatus, wherein the lens and one or more video-based sensors are coupled to the wearable apparatus.
10. The eye tracking system of claim 9 , wherein the wearable apparatus is a pair of glasses.
11. The eye tracking system of claim 9 , wherein the wearable apparatus is configured to be worn around the neck of the wearer.
12. The eye tracking system of claim 1 , further comprising:
material forming a second lens of suitable size to fit a wearer's eye and including one or more magnetic elements associated with the material forming the second lens;
one or more magnetic sensors configured to track the second lens, the one or more magnetic sensors configured to generate second tracking information associated with the tracking of the second lens; and
a computing device configured to perform one or more actions based on the tracking information and the second tracking information.
13. The wearable apparatus of claim 1 , wherein the one or more reflective elements associated with the material forming the lens reflect infrared or near infrared light.