US 12,079,385 B2
Optical see through (OST) head mounted display (HMD) system and method for precise alignment of virtual objects with outwardly viewed objects
Rani Ben-Yishai, Haifa (IL); and Gil Benesh, Haifa (IL)
Assigned to ELBIT SYSTEMS LTD., Haifa (IL)
Appl. No. 18/557,618
Filed by ELBIT SYSTEMS LTD, Haifa (IL)
PCT Filed Apr. 27, 2021, PCT No. PCT/IL2021/050485
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2022/229943, PCT Pub. Date Nov. 3, 2022.
Prior Publication US 2024/0220012 A1, Jul. 4, 2024
Int. Cl. G06F 3/01 (2006.01); G02B 27/01 (2006.01)
CPC G06F 3/013 (2013.01) [G02B 27/0172 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical see-through (OST) head mounted display (HMD) system, for viewing an image aligned with an object associated with a first reference frame, the OST HMD system comprising:
an electro-optical display module including:
at least one partially reflective partially transmissive optical element for at least one of viewing therethrough said object, and viewing said image; and
at least one electro-optical projection module configured to irradiate said image for viewing by at least one eye of a user who wears said OST HMD, said electro-optical display module being associated with a second reference frame; and
a processor configured to be coupled with said electro-optical display module, said processor configured to generate said image, according to predetermined information, eyeball feature position data, and at least one of an orientation, and a position and orientation, so that said image appears to said user in an aligned manner with respect to said object;
wherein said eyeball feature position data is associated with at least one eyeball feature position of said at least one eye, with respect to said second reference frame;
wherein said at least one of orientation, and position and orientation is of said second reference frame with respect to said first reference frame; and
wherein said predetermined information relates correction data of said OST HMD to a plurality of different respective position data values of said at least one eyeball feature position;
wherein said predetermined information further includes display corrections of said electro-optical display module with respect to said position data values of said at least one eyeball feature position,
wherein said predetermined information further includes see-through corrections of said at least one partially reflective partially transmissive optical element,
wherein said predetermined information is attained via a calibration procedure with respect to said plurality of different respective position data, using a calibration system,
wherein said object is either one of at least partially appearing outwardly and completely hidden to said user through said at least one partially reflective partially transmissive optical element when said image is irradiated by said at least one optical projection module.