Rifle Scope Field Lens Control for Real-Time Parallax Correction
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Solution Overview
Problem
Motion parallax and temperature-induced parallax errors in rifle scopes cause aiming inaccuracies, leading to missed targets, and existing solutions fail to completely and quickly eliminate these errors across all operational conditions.
Innovation Solution
A rifle scope system with light emitting devices and optical detectors, controlled by a processor, adjusts the position of a field lens to align the eyepoint with the optical axis, using a ring architecture for NIR illumination and detection, eliminating the need for bulky beam splitters and combiners, and employing actuators to correct horizontal and vertical misalignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional rifle scope design is used, then结构简单 (structure is simple), but parallax errors occur causing aiming inaccuracies
Solution Approach 1:
The system uses optical detectors to detect the position of the user's eye relative to the optical axis, feeds this information to a processor, and automatically adjusts the field lens position to correct parallax errors. This closed-loop feedback mechanism eliminates aiming inaccuracies caused by eye misalignment without requiring manual range adjustments.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with an automated optical detection and actuation system. Optical detectors substitute for manual eye-position sensing, and electric actuators replace manual focus adjustments, enabling automatic parallax correction while maintaining structural integration.
2Reliability
If manual range adjustment is used, then device complexity is low, but parallax errors cannot be completely eliminated across all operational conditions
Solution Approach 1:
The system dynamically adjusts the field lens position in real-time based on detected eye position, allowing the scope to adapt to different shooting conditions, user eye positions, and environmental factors. This dynamic adjustment ensures consistent parallax error elimination across all operational conditions rather than relying on fixed manual settings.
Solution Approach 2:
The scope performs self-correction by automatically detecting eye position and adjusting the field lens without requiring user intervention. The system serves itself by eliminating parallax errors through automated feedback control, removing the need for manual range adjustments and ensuring consistent accuracy.
3Measurement precision
If eye position is not monitored, then device complexity is low, but aiming accuracy deteriorates due to parallax errors
Solution Approach 1:
The system uses an intermediary optical detection mechanism that indirectly measures eye position by detecting the position of the eye's pupil or iris relative to the optical axis. This intermediary approach allows accurate eye position sensing without requiring direct contact or complex imaging of the eye, maintaining measurement precision while managing detection complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system dynamically compensates for parallax errors in real-time, ensuring accurate aiming by aligning the eyepoint with the optical axis, regardless of operator eye misalignment, without requiring range adjustments.
Implementation Method 1
A plurality of optical detectors detects reflected light received from the distal end of the rifle scope
Implementation Method 2
A processor device receives the data on the reflected light from the optical detectors and adjusts a position of a field lens so an eyepoint projected in a target space of the rifle scope coincides with an optical axis of the rifle scope removing parallax errors
Data Source
AI summary
An example rifle scope includes a plurality of light emitting devices for sending illuminations directed to a distal end of the rifle scope. A plurality of optical detectors detects reflected light received from the distal end of the rifle scope. Each of the optical detectors produces data regarding the reflected light each optical detector observed. A processor device receives the data on the reflected light from the optical detectors and adjusting a position of a field lens so an eyepoint projected in a target space of the rifle scope coincides with an optical axis of the rifle scope removing parallax errors due to misalignment.