US 12,216,265 B2
Auto-focus night vision device
Sean Matson, Virginia Beach, VA (US); and Zach Steinbock, Virginia Beach, VA (US)
Assigned to MATBOCK Origins, LLC, Virginia Beach, VA (US)
Filed by MATBOCK Origins, LLC, Virginia Beach, VA (US)
Filed on Nov. 9, 2023, as Appl. No. 18/505,934.
Claims priority of provisional application 63/382,993, filed on Nov. 9, 2022.
Prior Publication US 2024/0329384 A1, Oct. 3, 2024
Int. Cl. G02B 23/12 (2006.01); G02B 13/16 (2006.01); G02B 25/00 (2006.01)
CPC G02B 23/12 (2013.01) [G02B 13/16 (2013.01); G02B 25/001 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A night vision device comprising:
a housing having a first end and a second send;
an objective lens mounted on the housing nearer to a first end than a second end, and arranged for receiving light from ambient into the housing;
an image intensifier mounted on the housing and located toward the second end of the housing from the objective lens;
an eyepiece lens mounted on the housing and located toward the second end of the housing from the image intensifier;
an adjustable iris defining an iris opening, the adjustable iris being mounted on the housing and located toward the second end of the housing from the objective lens;
a sensor for detecting light intensity connected to the housing and located toward the second end of the housing, the sensor being configured to control a size of an area of the iris opening in response to the light intensity detected for keeping the area of the iris small so as to maintain a depth of field of the night vision device.