Riflescope Turret Encoder for In-View Adjustment Feedback
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Solution Overview
Problem
Conventional riflescope adjustment mechanisms require users to remove their eye from the view to interpret indicia markings on the turret knobs for adjusting aiming points, complicating the process of compensating for factors affecting bullet trajectory over long distances.
Innovation Solution
Incorporation of an encoder system with gears and Hall effect sensors to determine the rotational position of adjustment components within the riflescope, allowing for real-time display of adjustment positions without the need to look away, using a 1:1 gear ratio for the position gear and a non-1:1 gear ratio for the revolution gear to track complete revolutions and partial rotations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional indicia markings on turret knobs are used for adjustment, then the device complexity is reduced, but the ease of operation deteriorates because users must remove their eye from the view to interpret markings
Solution Approach 1:
The patent replaces the conventional mechanical indicia marking system with an electronic encoder system that provides digital feedback. The encoder assembly includes optical encoders that convert mechanical rotation into electrical signals, which are then processed by a control module to display adjustment information on an LCD screen. This substitution of mechanical indication with electronic sensing and display resolves the contradiction by enabling continuous visual feedback without requiring the user to look away from the scope view.
Solution Approach 2:
The patent implements a feedback mechanism where the encoder assembly continuously monitors the rotational position of the turret knob and provides real-time visual feedback through the LCD display. The control module processes encoder signals to show the current adjustment position, allowing users to see their adjustments without removing their eye from the scope. This feedback loop resolves the contradiction by providing operational information through the existing visual channel rather than requiring a separate indication method.
2Ease of operation
If an encoder system with sensors and gears is incorporated, then the ease of operation improves by providing real-time feedback, but the device complexity increases
Solution Approach 1:
The patent employs a nested structure where the encoder assembly is integrated within the existing turret housing. The optical encoders are positioned inside the turret body, with their sensing elements arranged concentrically around the rotation axis. The LCD display is nested within the scope's existing display area, and the control module is integrated into the scope's electronics compartment. This nesting approach minimizes the increase in device complexity by utilizing existing spaces and structures rather than adding external components.
Solution Approach 2:
The encoder system serves multiple functions: it tracks rotational position, provides visual feedback through the LCD, and enables precise adjustment measurement. The same encoder assembly that provides position feedback also enables the control module to calculate and display adjustment values. This multi-functionality reduces the need for separate systems and components, thereby limiting the increase in device complexity while maximizing the ease of operation benefits.
3Productivity
If the revolution gear has a smaller diameter than the second gear, then the gear ratio can be greater than 1:1, but this requires non-standard gear dimensions
Solution Approach 1:
The patent utilizes variable parameter design in the gear system, where the revolution gear is deliberately designed with a smaller diameter than the second gear to achieve a gear ratio greater than 1:1. This parameter change allows the system to provide enhanced rotational resolution and more precise position tracking. The non-standard gear dimensions are manufactured using precision machining processes that are standard in the optics industry, balancing the need for precise gear ratios with manufacturing feasibility.
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
Enables users to adjust aiming points accurately and efficiently by providing real-time positional feedback through the riflescope's display, enhancing the viewing experience and simplifying long-range shooting adjustments.
Implementation Method 1
the position gear and the revolution gear each include diametric magnets and the first sensor and the second sensor each include Hall effect sensors
Implementation Method 2
a first gear coupled with the first rotational component, a second gear coupled with the first rotational component
Data Source
AI summary
An adjustment assembly having a rotary encoder, riflescopes incorporating the same, and related methods are provided. In one example, an adjustment assembly includes a first rotational component configured to rotate about an axis, a first gear coupled with the first rotational component and a second gear coupled with the first rotational component. The assembly further includes an encoder. The encoder includes a position gear engaged with the first gear, the first gear and the position gear having a 1:1 gear ratio, and a revolution gear engaged with the second gear, the second gear and the revolution gear having a gear ratio other than 1:1, wherein the gear ratio of the second gear and the revolution gear independent of a ratio of the respective diameters of the second gear and the revolution gear. Sensors may determine the rotational positions of the position sensor and the revolution sensors.