Digital booster for sights

Patent metadata

Field	Value
Publication number	US-11644277-B2
Application number	US-202217741122-A
Country	US
Kind code	B2
Filing date	May 10, 2022
Priority date	Jul 1, 2021
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

A digital booster for an optical system includes an image acquisition unit. The image acquisition unit is configured to acquire an image frame from a non-magnified optic. The image frame includes an aiming reticle imposed by the non-magnified optic. The digital booster includes a display and a processor. The processor is configured to locate the aiming reticle on the image frame, select a sub-frame of the image frame with an aspect ratio that is centered on the aiming reticle of the image frame, perform image inversion and rescaling of the sub-frame, and transmit the sub-frame to the display.

First claim

What is claimed is:

1. A digital booster for an optical system comprising:
an image acquisition unit configured to acquire an image frame from a non-magnified optic, wherein the image frame includes an aiming reticle imposed by the non-magnified optic;
a display; and
a processor configured to:
locate the aiming reticle on the image frame;
select a sub-frame of the image frame with an aspect ratio that is centered on the aiming reticle of the image frame;
perform image inversion and rescaling of the sub-frame;
transmit the sub-frame to the display.

2. The digital booster of claim 1 , further comprising a database of electronic reticle patterns, wherein the processor is further configured to select an electronic aiming reticle from the database and impose the electronic aiming reticle onto the sub-frame.

3. The digital booster of claim 1 , further comprising a monocular housing in which the image acquisition unit, display, and processor are disposed within.

4. The digital booster of claim 1 , further comprising multiband zoom optics disposed between the image acquisition unit and the non-magnified optic.

5. The digital booster of claim 4 , further comprising a multiband focal plane array in electronic communication with the image acquisition unit to enable the image acquisition unit to acquire the image frame in one or more of the following electromagnetic bands: visible, near infrared, and short wave infrared.

6. The digital booster of claim 1 , wherein the processor is further configured to turn off the aiming reticle imposed by the non-magnified optic after locating the aiming reticle on the image frame.

7. The digital booster of claim 6 , wherein the image acquisition unit is configured to magnify the image frame or sub-frame such as to provide zooming capability.

8. The digital booster of claim 1 , wherein the processor is further configured to select a sub-frame based on having a maximum area sub-frame and based on attributes of the display.

9. The digital booster of claim 1 , wherein the digital booster is adapted to function with one or more of the following apparatuses: a firearm, a cell phone, telescope, microscope, or medical imaging device.

10. A method for centering an aiming reticle comprising:
acquiring, from an image acquisition unit, an image frame from a non-magnified optic, wherein the image frame includes an aiming reticle imposed by the non-magnified optic;
locating, with a processor, the aiming reticle on the image frame;
selecting, with the processor, a sub-frame of the image frame with an aspect ratio that is centered on the aiming reticle of the image frame;
performing, with the processor, image inversion and rescaling of the sub-frame; and
displaying the sub-frame.

11. The method of claim 10 , further comprising selecting an electronic aiming reticle from a database and imposing the electronic aiming reticle onto the sub-frame.

12. The method of claim 10 , further comprising employing a multiband focal plane array and multiband zoom optics to enable the image acquisition unit to acquire the image frame in one or more of the following electromagnetic bands: visible, near infrared, and short wave infrared.

13. The method of claim 10 , further comprising turning off, with the processor, the aiming reticle imposed by the non-magnified optic after locating the aiming reticle on the image frame.

14. The method of claim 10 , further comprising magnifying the image frame or sub-frame such as to provide zooming capability.

15. The method of claim 10 , wherein selecting, with the processor, a sub-frame of the image frame is based on attributes of display.

16. The method of claim 10 , wherein selecting, with the processor, a sub-frame of the image frame is based on maximizing the area of the sub-frame.

17. The method of claim 10 , further comprising checking the location of the aiming reticle on the image frame by turning on, with the processor, the aiming reticle imposed by the non-magnified optic, and repeating the locating of the aiming reticle on the image frame.

18. The method of claim 10 , further comprising generating a perturbed reticle onto the sub-frame.

19. The method of claim 10 , further comprising operating the image acquisition unit and the processor with one or more of the follow apparatuses: a firearm, a cell phone, telescope, microscope, or medical imaging device.

20. A digital booster for a firearm comprising:
a monocular housing defined by a flat-field eyepiece, the monocular housing configured to rotate in alignment with a non-magnified optic and a trajectory of the firearm;
an image acquisition unit disposed within the monocular housing, the image acquisition unit configured to acquire an image frame from the non-magnified optic, wherein the image frame includes an aiming reticle imposed by the non-magnified optic;
a display situated adjacent the flat-field eyepiece within the monocular housing; and
a processor disposed within the monocular housing configured to:
locate the aiming reticle on the image frame;
select a sub-frame of the image frame with an aspect ratio that is centered on the aiming reticle of the image frame;
perform image inversion and rescaling of the sub-frame; and
transmit the sub-frame to the display.

Assignees

• Raytheon Canada Ltd

Inventors

• Szapiel Stan
• Wagner Kevin Burgess
• Thorpe Michael

Classifications

• G06T2207/20132

  Image cropping · CPC title

• H04N23/69

  Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming · CPC title

• G02B27/32

  Fiducial marks and measuring scales within the optical system · CPC title

• H04N5/272

  Means for inserting a foreground image in a background image, i.e. inlay, outlay · CPC title

• H04N23/11

  for generating image signals from visible and infrared light wavelengths · CPC title