Holographic and Chrome Reticle Alignment for Stealth Rifle Scopes
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Solution Overview
Problem
Rifle scopes with lighted reticles face challenges in reducing back light leakage, which can lead to detection in low-light conditions, making them risky for use in stealth operations.
Innovation Solution
The eyepiece assembly incorporates a holographic reticle, such as a volume phase reflection hologram, and a chrome reticle aligned with the holographic reticle, which reduces back light leakage by blocking or minimizing its exit from the scope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the reticle is illuminated to improve visibility in low-light conditions, then the reticle can be seen clearly, but light may escape from the scope and increase detection risk
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by converting the harmful escaped light into a beneficial reflected light pattern. The holographic reticle is designed to reflect light back through the scope rather than allowing it to escape, transforming the potential detection risk into an enhanced reticle visibility while maintaining stealth characteristics
2Illumination intensity
If a light source is added to illuminate the reticle, then the reticle is visible in dark conditions, but the complexity of the device increases
Solution Approach 1:
The patent applies the 'Merging' principle by integrating the light source, holographic reticle, and eyepiece into a single unified assembly. The light source is positioned within the eyepiece assembly to directly illuminate the holographic reticle, combining multiple functional elements into one compact unit that reduces overall system complexity while achieving effective reticle illumination
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
This configuration allows for effective illumination of the reticle in low-light conditions while significantly reducing back light leakage, enhancing user safety by minimizing detection risks.
Implementation Method 1
The eyepiece assembly may include a holographic reticle, such as a volume phase reflection hologram
Data Source
AI summary
An eyepiece assembly for use in a rifle scope may include an eyepiece that is made of a material that is transparent to light. A holographic reticle may be positioned within the eyepiece. The eyepiece assembly may also include a chrome reticle. The chrome reticle may be positioned so that the chrome reticle is aligned with the holographic reticle. A cover portion may be attached to the eyepiece.