Non-linear Reticle Scale for Distance Determination
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Solution Overview
Problem
MIL reticles in telescopic sights with reticles in the first image plane are difficult to read, especially at small magnifications, and obstruct the field of view at large magnifications, making it challenging for shooters to quickly and accurately determine target distances without diverting their attention from the target.
Innovation Solution
A reticle with a non-linear size value scale on a transparent carrier plate, featuring a first principal line and read lines with numerical values that increase with distance, allowing shooters to calculate distances using natural numbers without decimal points, and optional conversion formulas for easy mental calculations, minimizing eye movement and maintaining focus on the target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a MIL scale gradation is used in the first image plane, then distance determination is possible, but the scale is difficult to read at small magnifications and obstructs the field of view at large magnifications
Solution Approach 1:
The patent transitions from a linear MIL scale to a logarithmic scale where the spacing between gradations changes non-linearly. This dimensional transformation of the scale allows closer spacing at smaller values (improving readability) while maintaining appropriate spacing at larger values (reducing obstruction), effectively solving the contradiction through a mathematical transformation of the measurement dimension.
Solution Approach 2:
The patent changes the parameter of scale spacing from linear to logarithmic progression. By varying the spacing parameter according to a logarithmic function rather than a constant interval, the scale becomes easier to read at small magnifications while occupying less visual space at large magnifications, thus resolving the contradiction between readability and field of view obstruction.
2Measurement precision
If a linear MIL scale is used, then distance measurement is possible, but calculation involves decimal points which complicates the process and loses time
Solution Approach 1:
The patent transforms the scale parameter from linear to logarithmic progression, which changes the mathematical relationship between scale readings and actual distances. This transformation allows shooters to use natural number readings that map more directly to practical distance calculations, reducing the need for complex decimal arithmetic and minimizing calculation time while maintaining measurement precision.
3Adaptability or versatility
If the reticle is in the first image plane, then MIL values can be applied at any magnification setting, but the scale obstructs parts of the field of view at large magnifications
Solution Approach 1:
By changing the scale from linear to logarithmic progression, the patent reduces the physical space required for the scale markings. The logarithmic compression allows the same information to be displayed in a more compact form, maintaining adaptability across magnifications while reducing the area occupied and thus minimizing field of view obstruction.
Data Source
AI summary
The invention relates to a reticle (1) for a telescopic sight (100), having a non-linear size value scale (10) and further special scales and sighting aids (30) which serve in each case for the determination of a distance to a target object or of the size thereof in order that, ultimately, a shot can be fired precisely at the target object. The invention also relates to the method for determining the distance to the target object (ZO) using the non-linear size value scale, and to telescopic sights and firearms having the reticle according to the invention.