Shotgun Sight Diffraction Lens Pellet Spread Simulation

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Solution Overview

Problem

Existing laser sighting devices for guns do not accurately replicate the spread pattern of shotgun pellets, especially at longer distances, as they project light beams at an exaggerated angle, failing to accurately frame targets for where shotgun pellets would land.

Innovation Solution

A sighting device that includes a laser light source, power source, and a diffraction lens to project multiple light beams in a circular pattern, expanding as they travel, replicating the spread pattern of shotgun pellets, which can be mounted on a shotgun and adjusted for accurate targeting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a laser is used to project a narrow beam for aiming, then the laser produces a small bright spot on the target, but the beam does not replicate the spread pattern of shotgun pellets at longer distances

Engineering Contradiction:
Improvelaser beam intensityVSAvoidaccuracy of pellet spread simulation
Core Design Contradiction:
Illumination intensityVSMeasurement precision

Solution Approach 1:

The laser beam is segmented into multiple separate beams arranged in a circular pattern, with a central beam and surrounding beams at specific angles. This segmentation allows the light to replicate the spread pattern of shotgun pellets while maintaining the intensity benefits of laser projection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The angular separation between laser beams is precisely controlled to match the pellet spread characteristics of specific shotgun types. By adjusting parameters such as beam angle and spacing, the system accurately simulates pellet distribution at various distances while maintaining laser intensity.

Inventive Principle:
Principle #35Parameter changes

2Shape

If multiple laser beams are projected in a circular pattern, then the spread pattern is replicated, but the light beams are projected at an exaggerated angle

Engineering Contradiction:
Improvecircular pattern shapeVSAvoidaccuracy of pellet spread simulation
Core Design Contradiction:
ShapeVSMeasurement precision

Solution Approach 1:

The angular parameters of the laser beams are precisely calibrated to match the specific spread characteristics of different shotgun types. By adjusting the angle and spacing parameters, the system achieves accurate pellet spread simulation without the exaggerated angles of previous designs.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system allows for dynamic adjustment of beam angles and spacing to accommodate different shotgun types and pellet loads. This dynamic parameter adjustment enables accurate simulation across various firing conditions while maintaining the circular pattern geometry.

Inventive Principle:
Principle #15Dynamics

3Illumination intensity

If the laser beam is focused into a narrow beam with small divergence angle, then a small bright spot is produced, but the device does not accurately frame the target for shotgun pellet landing

Engineering Contradiction:
Improvebright spot size and intensityVSAvoidtarget framing accuracy
Core Design Contradiction:
Illumination intensityVSEase of operation

Solution Approach 1:

The single narrow laser beam is divided into multiple segmented beams arranged in a circular pattern. This segmentation creates a visual frame that mimics pellet spread while maintaining the intensity and precision of laser projection, enabling accurate target framing for shotgun aiming.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system creates an optical copy of the pellet spread pattern using laser beams arranged to match the characteristic circular distribution of shotgun pellets. This copying approach provides accurate target framing without requiring physical pellets or complex mechanical systems.

Inventive Principle:
Principle #26Copying

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 device effectively simulates the spread pattern of shotgun pellets, allowing for accurate aiming and target simulation, enhancing the precision of shotgun aiming and training by replicating the pellet spread pattern at varying distances.

Implementation Method 1

a light source, which is most preferably a laser

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

the laser projects a beam of laser light in a direction generally parallel to the gun's bore

Methodology Applied
Scientific EffectLight beam propagation: Light

Implementation Method 3

a diffraction lens to project multiple light beams in a circular pattern

Methodology Applied
Scientific EffectDiffraction: Diffraction

Implementation Method 4

light beams from the sighting device are projected outwardly, preferably in a circular pattern, that expands as the light beams travel farther from the sighting device

Methodology Applied
Scientific EffectLight beam expansion: Light

Data Source

PatentUS9146077B2Shotgun with sighting device
Publication Date: 2015.09.29 CRIMSON TRACE CORP
  • US9146077B2 patent drawing
  • US9146077B2 patent drawing
  • US9146077B2 patent drawing

AI summary

A sighting device replicates the spread pattern of pellets exiting the barrel of a shotgun. The sighting device includes a light source (preferably a laser) and a power source connectable to the light source. The device may also include a mount to attach the sighting device to a shotgun. The sighting device preferably projects a circular pattern of individual light beams wherein the circumference of the circular pattern increases as the light beams move farther from the sighting device to replicate the spread of shotgun pellets. The sighting device may also project a beam of light in the center of the pattern.