US 12,276,860 B2
Eyepiece for night vision devices capable of injecting a synthetic image with a single optical correction mechanism
Gil Benesh, Haifa (IL); and Sharon Golebowicz, Haifa (IL)
Assigned to Elbit Systems Ltd., Haifa (IL)
Filed by Elbit Systems Ltd., Haifa (IL)
Filed on Jun. 7, 2023, as Appl. No. 18/330,489.
Application 18/330,489 is a continuation of application No. PCT/IL2021/051474, filed on Dec. 9, 2021.
Claims priority of application No. 279343 (IL), filed on Dec. 9, 2020.
Prior Publication US 2023/0314755 A1, Oct. 5, 2023
Int. Cl. G02B 7/06 (2021.01); G02B 23/12 (2006.01); G02B 25/00 (2006.01); G02B 27/01 (2006.01); G06F 3/14 (2006.01); H04N 5/77 (2006.01)
CPC G02B 7/06 (2013.01) [G02B 23/12 (2013.01); G02B 25/001 (2013.01); G02B 27/0101 (2013.01); G06F 3/14 (2013.01); H04N 5/77 (2013.01); G02B 2027/0112 (2013.01); G02B 2027/0132 (2013.01); G02B 2027/0138 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An eyepiece optically suitable for a night vision device, the eyepiece comprising:
an observer-side lens suitable to face an observer,
an objective-side lens suitable to face an objective lens of said night vision device;
a diopter adjustment knob configured to set a distance between the observer-side lens and the objective-side lens; and
an optical combiner located between the observer-side lens and the objective-side lens,
wherein a scene image coming through the objective lens of said night vision device, passes through the objective-side lens, the optical combiner and the observer-side lens,
wherein a display source image coming from an electronic display is reflected from the optical combiner into the observer-side lens,
wherein the optical combiner is configured to overlay the display source image on the scene image;
wherein the diopter adjustment knob serves as a single setting mechanism which simultaneously sets a diopter of the observer and a focal depth of the display source image,
wherein the eyepiece is a standalone device which is connectable to a night vision device,
wherein the scene image is generated by an image intensifier at the night vision device and is a monochromatic scene image, and
wherein the display source image is a multi-colored display source image.