Trajectory Compensating Sighting Device with LCD Array

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Solution Overview

Problem

Riflemen face challenges in accurately aiming firearms due to the need to manually calculate and adjust for various environmental and bullet-related factors, leading to inaccuracies in hitting targets, especially at long distances, as current reticles lack labeled markings for hold over and windage compensation.

Innovation Solution

A sighting system that includes an optic device with a controller and LCD elements, which calculates and displays an automatically adjusted aiming point based on ballistics information and range input, allowing for precise compensation for bullet trajectory and environmental factors without manual calculations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual calculation and adjustment using reticles with hatches is used, then the rifleman can attempt to compensate for bullet trajectory, but the determination is often inaccurate leading to missed targets

Engineering Contradiction:
Improveaiming accuracyVSAvoidmanual calculation complexity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the mechanical/manual system of calculating bullet trajectory with an electronic computer system. The controller receives inputs (range, environmental conditions, ammunition type) and automatically calculates the required aim point, eliminating the need for manual mathematical computations by the rifleman.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The sighting system performs self-service by automatically determining the correct aim point without requiring external assistance or manual calculation. The computer system autonomously processes all trajectory compensation calculations and presents the final aim point to the user.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If reticles include hatches for hold over or windage compensation, then the rifleman has tools for adjustment, but the hatches are generally not labeled and the rifleman must understand which hatch to use

Engineering Contradiction:
Improvetrajectory compensation capabilityVSAvoiduser interface clarity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent uses different colored aiming points or visual indicators to represent different compensation scenarios (e.g., hold over vs. windage). The display can change colors or visual characteristics to clearly indicate which compensation is being applied and what the rifleman should aim at.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent introduces an intermediary display system (such as an LCD or projected reticle) that acts as a mediator between the complex ballistics calculations and the rifleman. This intermediary translates all the computational results into simple, clear visual aiming indicators that are easy to understand and use.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the rifleman aims over the target to compensate for bullet drop, then the bullet can hit the target, but the rifleman must determine the correct hold over amount

Engineering Contradiction:
Improvebullet impact accuracyVSAvoidtime for determination
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary calculations of bullet trajectory and required hold over amounts before the shot is taken. The computer system pre-calculates all possible trajectory compensations based on input parameters, so when the rifleman needs to aim, the correct hold over amount is already determined and displayed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the manual process of determining hold over amounts with an electronic calculation system. The computer instantly computes the precise aim point elevation adjustment needed based on range and environmental conditions, eliminating the time required for manual determination.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Adaptability or versatility

If different bullets with different masses and speeds are used, then each bullet has a unique trajectory, but the rifleman must determine the correct aim point for each bullet type

Engineering Contradiction:
Improvebullet type compatibilityVSAvoidaiming determination complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal sighting system that can handle multiple bullet types with different masses and velocities. The computer system is programmed with ballistics data for various ammunition types and can automatically select and calculate the correct trajectory compensation for any bullet the rifleman chooses to use.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent utilizes parameter changes in the calculation process to adapt to different bullet types. By modifying input parameters (bullet mass, velocity, ballistic coefficient) in the computer's ballistics model, the system automatically adjusts the calculated aim point to account for the unique trajectory characteristics of each bullet type.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS7703679B1Trajectory compensating sighting device systems and methods
Publication Date: 2010.04.27 BURRIS CO INC
  • US7703679B1 patent drawing
  • US7703679B1 patent drawing
  • US7703679B1 patent drawing

AI summary

A sighting system for visually acquiring a target includes an optic device having a transmissive LCD array affixed thereon. The transmissive LCD array includes two or more LCD elements that are separately addressable to provide an aiming point. In embodiments, the sighting system receives information from an input system, such as ammunition information or environmental information, executes a ballistics program to determine ballistics information using the received information, and determines a range to the target. A controller calculates an aiming point using the ballistics information and the target range. The controller then addresses or energizes one of the LCD elements to provide the aiming point.