Integrated Grenade Launcher Rangefinder and Sight Assembly

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Solution Overview

Problem

Current laser range finding and sighting systems for grenade launchers lack integration with ballistic computers and auxiliary sights, making them inefficient for precise targeting, especially in bright light conditions and when visibility of laser beams compromises operator safety.

Innovation Solution

An integrated rangefinder and sight system with a ballistic computer that includes a housing with a Picatinny rail interface, an optical range finder, onboard processor, and a pointing laser assembly, allowing for distance calculation and trajectory adjustment, along with an optional auxiliary reflex sight for improved visibility and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a laser range finder and sighting system is used for grenade launcher, then distance measurement capability is provided, but the system lacks integration with ballistic computer and auxiliary sights reducing targeting precision

Engineering Contradiction:
Improvetargeting precisionVSAvoidsystem integration
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines the laser range finder, ballistic computer, and auxiliary sights into a single integrated sighting assembly that mounts to the grenade launcher. The housing contains all components in a unified structure with shared power supply and control systems, eliminating the need for separate devices and improving targeting precision through coordinated operation of all subsystems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated sighting assembly performs multiple functions simultaneously: the laser range finder measures distance, the ballistic computer calculates trajectory compensation, and the auxiliary sights provide aiming reference. This multi-functional design replaces what would traditionally require multiple separate devices, enhancing targeting precision without proportionally increasing complexity.

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

2Ease of operation

If pointing laser is used for targeting, then sight alignment is improved, but visibility of laser beam compromises operator safety in bright light conditions

Engineering Contradiction:
Improvesight alignmentVSAvoidoperator safety
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an auxiliary reflex sight as an intermediary aiming aid that works in conjunction with the pointing laser. The reflex sight provides a visible reference point that does not compromise operator safety, while the laser provides precise alignment. The ballistic computer coordinates both systems to achieve accurate targeting without requiring the operator to rely solely on the visible laser beam.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If separate range finder and sighting devices are used, then device complexity is reduced, but targeting accuracy and integration efficiency deteriorate

Engineering Contradiction:
Improvesystem structureVSAvoidtargeting accuracy
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent merges separate range finder and sighting devices into a single integrated assembly with common mounting interface, power supply, and control electronics. This unified structure ensures precise alignment between all components relative to the grenade launcher bore, improving targeting accuracy while the modular internal design keeps manufacturing complexity manageable.

Inventive Principle:
Principle #5Merging (Combining)

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 precise distance measurement and trajectory calculation for grenade launchers, enhancing targeting accuracy and safety by providing an integrated solution with adjustable pointing lasers and an auxiliary reflex sight for use in various lighting conditions.

Implementation Method 1

an optical range finder including an optical transmitter that transmits a beam of light toward a target and an optical receiver that detects light reflected from the target

Methodology Applied
Scientific EffectTime of flight: Time of Flight

Implementation Method 2

an optical transmitter that transmits a beam of light toward a target

Methodology Applied
Scientific EffectLight: Light

Implementation Method 3

an optical receiver that detects light reflected from the target

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 4

a processor that calculates a distance to the target based on a time interval between transmission of the beam of light and detection of the reflected light

Methodology Applied
Scientific EffectLight speed: Speed of Sound

Data Source

PatentUS8561518B2Integrated laser range finder and sighting assembly for grenade launcher and method therefor
Publication Date: 2013.10.22 WILCOX IND CORP CORP
  • US8561518B2 patent drawing
  • US8561518B2 patent drawing
  • US8561518B2 patent drawing

AI summary

An integrated laser range finder and sighting assembly includes a range finder for determining a distance to a target and an onboard ballistics computer for calculating a trajectory and automatically rotating a pointing laser to the proper angle for aligning with the target for lobbing of a grenade.