Feb 17, 2026

US12553688 - Optical system with cant indication

An electronic indicator on a see-through optical scope indicates whether an optical system is canted. The visual indicator may include one or more LEDs coupled to a microprocessor that is also coupled to a solid-state electronic inclinometer incorporated into the internal structure of the optical system. The microprocessor is configured to selectively illuminate the visual indicator based on the output of the inclinometer, thereby indicating how the reticle is canted, if at all.

Assignee: SIG SAUER, INC.
Inventors: Andrew W. York, Gregory Scott Smith
Filing date: 2024-06-18

opticalsightingfirearmindicator

The patent describes a sighting device for firearms that incorporates a see-through optical scope with an electronic inclinometer to detect canting. An electronic indicator provides a visual signal on the target reticle when the detected roll exceeds a predetermined threshold, enhancing aiming accuracy.

Claim 1

1 . A sighting device for a firearm, comprising: a housing structured to be secured to the firearm; a see-through optic made from a transparent material disposed within the housing; a target reticle visible when sighting a target through the see-through optic; an electronic inclinometer mounted transverse to a long axis of the firearm and structured to determine an amount of roll about the long axis of the firearm; and an electronic indicator structured to create a visual signal on the target reticle when the electronic inclinometer determines the amount of roll about the long axis of the firearm exceeds a threshold. a housing structured to be secured to the firearm; a see-through optic made from a transparent material disposed within the housing; a target reticle visible when sighting a target through the see-through optic; an electronic inclinometer mounted transverse to a long axis of the firearm and structured to determine an amount of roll about the long axis of the firearm; and an electronic indicator structured to create a visual signal on the target reticle when the electronic inclinometer determines the amount of roll about the long axis of the firearm exceeds a threshold.

Google Patents

https://patents.google.com/patent/US12553688

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12553688