IR Signature Simulation Using Collimated LED and Parabolic Reflector
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Solution Overview
Problem
Existing IR detection system testing methods require expensive and inconvenient real-world object operations, and prior simulation systems are inefficient in projecting IR signatures across a large field of view without complex and costly projection equipment.
Innovation Solution
A system utilizing a computer-controlled infrared LED display and an off-axis parabolic reflector to collimate and project IR signatures, allowing for accurate simulation of objects and background clutter within the field of view of an IR detection device, eliminating the need for multiple projectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-world objects are used for testing IR detection systems, then testing accuracy is improved, but cost and convenience deteriorate
Solution Approach 1:
The patent creates a virtual copy of real-world objects by rendering their infrared signatures and background clutter into a simulated environment. This virtual model allows testing of IR detection systems with the same accuracy as real objects would provide, but without the high costs and logistical complexities of operating actual vehicles, weapon platforms, or weapons systems.
2Measurement precision
If multiple projectors are used to simulate IR signatures across a large field of view, then simulation accuracy is improved, but device complexity and cost deteriorate
Solution Approach 1:
The patent transitions from a two-dimensional projection approach (multiple projectors on a screen) to a three-dimensional virtual environment where infrared signatures are rendered and displayed on a head-mounted display device. This dimensional change allows a single system to provide realistic IR signature simulation across the entire field of view without requiring multiple projectors.
Solution Approach 2:
The virtual environment system serves multiple functions: it generates IR signatures of objects, simulates background clutter, and displays the combined simulation on the head-mounted display. This multi-functional approach replaces what would otherwise require separate projectors and screen systems, reducing overall device complexity.
3Device complexity
If a single projector is used to simulate IR signatures, then device complexity is reduced, but simulation accuracy across a large field of view deteriorates
Solution Approach 1:
The system creates a virtual copy of the real-world scene including objects and background clutter, rendering their infrared signatures computationally. This virtual representation maintains the accuracy needed for testing IR detection systems while being displayed through a single head-mounted display device, eliminating the need for multiple physical projectors.
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 cost-effective and practical simulation of IR signatures and background clutter, allowing for thorough testing and calibration of IR detection systems without the need for expensive equipment, while compensating for environmental and system losses.
Implementation Method 1
The IR signature is collimated as it travels from the infrared LED display to the IR detection device. The IR signature can be collimated by the reflector or by an added lens system used between the reflector and the infrared LED display.
Implementation Method 2
A reflector is positioned to reflect the IR signature from the infrared LED display toward the testing position of the IR detection device. The configuration of the reflector is dependent upon the configuration of the infrared LED display
Data Source
AI summary
A system, method, and device for simulating an IR signature to test an IR detection device. At least one infrared LED display is provided. Each infrared LED display contains infrared LEDs that emit the desired IR signature. A reflector reflects the IR signature toward the IR detection device. The configuration of the reflector is dependent upon the configuration of the infrared LED display and whether or not some intermediate lens system is used. The IR signature is collimated as it travels to the IR detection device. The IR signature can be collimated by the reflector or by an added lens system. The IR signature fills the field of view associated with the IR detection system. The IR signature comes from a computer-controlled display. As such, the system can simulate various IR signatures and move those IR signatures throughout the field of view of the IR detection system.