Eye-position sensor
Patent 4720189 Issued on January 19, 1988. Estimated Expiration Date: 
January 7, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 7, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3507988 3724932 Retinally stabilized differential resolution television display Patent #: 4513317 InventorsAssigneeApplicationNo. 06/816787 filed on 01/07/1986US Classes:351/210Using photodetectorExaminersPrimary: Bovernick, Rodney B.International ClassA61B 3/113 (20060101)AbstractAn eye-position sensor for use in an eye-activated optical transducer in which a spatial filter is used to modify light reflected from the eye to form a substantially rectangular pattern on a quadrantal array of contiguous sensors. This arrangement provides a substantially linear change in the output signal from the sensors in response to an equivalent movement of the eye.Other References
Field of SearchIncluding eye movement detection | |
