US 12,436,392 B2
Image expansion optic for head-worn computer
John D. Haddick, Corte Madera, CA (US); and Jean-Claude David Ramey De Sugny, San Francisco, CA (US)
Assigned to Mentor Acquisition One, LLC, Plantation, FL (US)
Filed by Mentor Acquisition One, LLC, Plantation, FL (US)
Filed on Feb. 23, 2024, as Appl. No. 18/586,284.
Application 18/586,284 is a continuation of application No. 17/948,895, filed on Sep. 20, 2022, granted, now 11,947,120.
Application 17/948,895 is a continuation of application No. 17/108,725, filed on Dec. 1, 2020, granted, now 11,500,207, issued on Nov. 15, 2022.
Application 17/108,725 is a continuation of application No. 15/668,852, filed on Aug. 4, 2017, granted, now 10,969,584, issued on Apr. 6, 2021.
Prior Publication US 2024/0192502 A1, Jun. 13, 2024
Int. Cl. G02B 27/14 (2006.01); G01C 21/00 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02F 1/1335 (2006.01); G06F 1/16 (2006.01); G09G 5/00 (2006.01); H04N 7/00 (2011.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0075 (2013.01); G06F 1/163 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0138 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wearable see-through display, comprising:
an image engine comprising:
a display panel;
a lens;
a light source; and
a partially reflective and partially transmissive surface configured to reflect illumination light from the light source, further configured to receive image content light from the display panel via the lens, and further configured to communicate the image content light;
a first combiner;
a transmissive optical element in optical communication with the image engine and further in optical communication with the first combiner, the transmissive optical element comprising:
a first reflective surface facing the first combiner; and
a second reflective surface facing the display panel; and
a stray light control optic disposed between the transmissive optical element and the first combiner,
wherein:
the display panel comprises a reflective display configured to communicate with the light source,
the image engine is configured to rest to a side of an eye of a user and out of a field of view of the user,
the first reflective surface is configured to reflect the image content light communicated by the partially reflective and partially transmissive surface towards the second reflective surface,
the second reflective surface is configured to reflect the image content light through the first reflective surface and further through the stray light optic towards the first combiner,
the transmissive optical element has a positive optical power, and
the stray light control optic is configured to limit transmission of scene light to the image engine.