US 12,105,292 B2
Optical see through (OST) near eye display (NED) system integrating ophthalmic correction
Asaf Ashkenazi, Haifa (IL); and Hanan Shamir, Haifa (IL)
Assigned to EVERYSIGHT LTD., Haifa (IL)
Filed by EVERYSIGHT LTD., Haifa (IL)
Filed on Oct. 28, 2022, as Appl. No. 17/976,218.
Application 17/976,218 is a continuation of application No. 16/424,159, filed on May 28, 2019, granted, now 11,513,349.
Application 16/424,159 is a continuation in part of application No. 14/632,310, filed on Feb. 26, 2015, granted, now 10,488,660, issued on Nov. 26, 2019.
Application 14/632,310 is a continuation in part of application No. 12/862,987, filed on Aug. 25, 2010, granted, now 8,970,962, issued on Mar. 3, 2015.
Application 12/862,987 is a continuation of application No. 12/404,087, filed on Mar. 13, 2009, granted, now 7,791,809, issued on Sep. 7, 2010.
Claims priority of provisional application 61/036,281, filed on Mar. 13, 2008.
Prior Publication US 2023/0118315 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 2027/0132 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical configuration for an optical see through (OST) eye tracking system, comprising:
a partially transmissive partially reflective lens, configured to be facing an eye of a user; and
an electro optical sub system, comprising:
an eye-tracker including an image sensor, configured to acquire at least one image of an eyeball feature of said eye with reflected light from said eye;
a first lens;
a second lens;
a third lens;
a fourth lens;
a curved mirror;
an optical combiner; and
a fifth lens,
wherein said optical configuration enables said reflected light to travel along an eye tracker optical path at least partially reflecting from said partially transmissive partially reflective lens; then refracting through said first lens, said second lens, said third lens, and said fourth lens, then reflecting from said curved mirror and refracting again in reverse order through said fourth lens and then through said third lens, then at least partially passing through said optical combiner, refracting through said fifth lens, and impinging on said image sensor.