# US 12,760,997 B2 · Target sight with sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,760,997 B2 - Document ID: US12760997B2 - Status: Granted - Kind: B2 - Application number: 19/172,359 - Filed: 2025-04-07 - Published: 2025-10-23 - Granted: 2026-10-13 - Earliest claimed: 2022-01-14 - Assignees: Sig Sauer, Inc. - Applicants: Sig Sauer, Inc. - Inventors: Grover Q Castaneda; Richard B. Brumfield; Elbridge J. Lapham, IV; John P. Nichols - Web page: https://patentgrep.com/patent/US12760997B2 ## CPC - F41G 1/3935: {Transmission of sight movements to the associated gun} - F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B) ## Abstract An accessory system for a firearm includes a positionable magnifier, an accessory structured to operate in conjunction with the magnifier, a sensor configured to sense a position of the magnifier, and a processor configured to receive input from the sensor and adjust an operating mode of the accessory based on the input from the sensor. Methods are also described. ## Claims ### Claim 1 An accessory system for a firearm, comprising: a target sight structured to be secured to the firearm, the target sight including an accessory mount position sensor; and an accessory mount structured to be secured to the firearm, the accessory mount operable to be placed in a first physical position and a second physical position relative to the target sight; wherein the accessory mount position sensor of the target sight is a physical switch structured to generate a signal when the accessory mount is moved between the first physical position and the second physical position relative to the target sight. ### Claim 2 (depends on 1) The accessory system for a firearm according to claim 1, in which the accessory mount is structured to secure a firearm accessory to the firearm. ### Claim 3 (depends on 2) The accessory system for a firearm according to claim 2, in which the firearm accessory is a second target sight, a light, a laser, a night-vision sight, a night-vision scope, or a magnifier. ### Claim 4 (depends on 1) The accessory system for a firearm according to claim 1, further comprising a processor in the target sight structured to receive input from the accessory mount position sensor and adjust an operating mode of the target sight based on the received input. ### Claim 5 (depends on 4) The accessory system for a firearm according to claim 4, further comprising an accelerometer. ### Claim 6 (depends on 5) The accessory system for a firearm according to claim 5, in which the processor is configured to further receive input from the accelerometer, and the processor is configured to adjust the operating mode of the target sight based on the input from the accessory mount position sensor and from the accelerometer. ### Claim 7 (depends on 4) The accessory system for a firearm of claim 4, in which the target sight includes two or more pre-stored operating modes. ### Claim 8 (depends on 7) The accessory system for a firearm of claim 7, in which the two or more pre-stored operating modes comprise displaying a reticle of the target sight at a first brightness level and displaying the reticle of the target sight at a second brightness level. ### Claim 9 (depends on 7) The accessory system for a firearm of claim 7, in which the two or more pre-stored operating modes comprise selecting and displaying a first reticle from a plurality of available reticles for display on the target sight and selecting and displaying a second reticle from the plurality of available reticles for display on the target sight. ### Claim 10 (depends on 1) The accessory system for a firearm according to claim 1, in which the accessory mount position sensor is structured to sense a component mounted to or integrated into the accessory mount. ### Claim 11 (depends on 10) The accessory system for a firearm according to claim 10, in which the component is a magnet and in which the accessory mount position sensor is a magnetic sensor. ### Claim 12 (depends on 10) The accessory system for a firearm according to claim 10, in which the component is made of metal and in which the accessory mount position sensor is an inductive sensor. ### Claim 13 (depends on 10) The accessory system for a firearm according to claim 10, further comprising an accessory mounted to the accessory mount, and in which the component is included in or carried by the accessory. ### Claim 14 (depends on 1) The accessory system for a firearm according to claim 1, in which the accessory mount position sensor is an ambient light sensor. ### Claim 15 A method of operating a target sight having an accessory mount position sensor, the method comprising: sensing a change in physical proximity of a component of an accessory mount when the accessory mount is physically moved between a first physical position and a second physical position relative to the target sight, including: generating a signal from a sensor in the target sight based on the physical movement of the accessory mount, comparing the sensor signal to a threshold, and producing a mode change signal based on the comparison of the sensor signal to the threshold; and responsive to the mode change signal, changing an operating mode of the target sight. ### Claim 16 (depends on 15) The method of operating a target sight according to claim 15, in which generating a signal from a sensor comprises generating a signal from a magnetic sensor. ### Claim 17 (depends on 15) The method of operating a target sight according to claim 15, in which generating a signal from a sensor comprises generating a signal from an inductive sensor, a light sensor, a proximity sensor, or a switch. ### Claim 18 (depends on 15) The method of operating a target sight according to claim 15, in which changing an operating mode of the target sight comprises selecting a different mode from a plurality of operating modes pre-stored in the target sight. ### Claim 19 (depends on 18) The method of operating a target sight according to claim 18 in which the operating modes pre-stored in the target sight includes displaying one of a plurality of reticles pre-stored in the target sight or displaying one of a plurality of brightness levels pre-stored in the target sight. ### Claim 20 An accessory system for a firearm, comprising: a target sight structured to be secured to the firearm, the target sight including an accessory mount position sensor; and an accessory mount structured to be secured to the firearm, the accessory mount operable to be placed in a first physical position and a second physical position relative to the target sight; wherein the accessory mount position sensor of the target sight is structured to sense a component mounted to or integrated into the accessory mount and to generate a signal when the accessory mount is moved between the first physical position and the second physical position relative to the target sight, and in which (i) the component is a magnet and the accessory mount position sensor is a magnetic sensor, or (ii) the component is made of metal and the accessory mount position sensor is an inductive sensor. ### Claim 21 (depends on 20) The accessory system for a firearm according to claim 20, further comprising an accessory mounted to the accessory mount, and in which the component is included in or carried by the accessory. ### Claim 22 (depends on 20) The accessory system for a firearm according to claim 20, further comprising a processor in the target sight configured to receive input from the accessory mount position sensor and adjust an operating mode of the target sight based on the received input. ### Claim 23 (depends on 22) The accessory system for a firearm according to claim 22, further comprising an accelerometer, and in which the processor is configured to further receive input from the accelerometer, and the processor is configured to adjust the operating mode of the target sight based on the input from the accessory mount position sensor and from the accelerometer. ### Claim 24 (depends on 22) The accessory system for a firearm of claim 22, wherein: the target sight includes two or more pre-stored operating modes which include at least: (i) displaying a reticle of the target sight at a first brightness level, and (ii) displaying the reticle of the target sight at a second brightness level; and the processor is configured to adjust the operating mode by selecting from the pre-stored operating modes based on the received input from the accessory mount position sensor. ### Claim 25 (depends on 22) The accessory system for a firearm of claim 22, wherein: the target sight includes two or more pre-stored operating modes which include at least: (i) displaying a first reticle from a plurality of available reticle patterns stored on the target sight, and (ii) displaying a second reticle from the plurality of available reticle patterns; and the processor is configured to adjust the operating mode by selecting from the pre-stored operating modes based on the received input from the accessory mount position sensor.