Integrated Flex Circuit for Compact Night-Vision Display Upgrades
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Solution Overview
Problem
Existing night-vision systems lack modern ancillary functionality, such as the ability to overlay additional images on a display output, due to high upgrade costs and limited space within the device.
Innovation Solution
A method involving attaching a flex circuit with light detectors to an intensifier module, folding it to expose detectors, and optically coupling a display unit to the output side, allowing graphical content to be displayed alongside night-vision images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display unit is integrated into the night-vision system, then modern ancillary functionality is provided, but device complexity increases
Solution Approach 1:
The patent divides the night-vision system into separate functional modules: the intensifier module (with objective lens and intensifier tube) and the display module (with display unit and beam combiner). This segmentation allows the display functionality to be added as an independent module without redesigning the entire system, thereby providing modern ancillary functionality while managing device complexity through modular architecture.
Solution Approach 2:
The intensifier module is designed to serve multiple functions: it can operate independently to provide traditional night-vision enhancement, or it can be combined with the display module to provide both night-vision enhancement and graphical overlay capabilities. This multi-functionality allows the system to adapt to different operational requirements without requiring separate dedicated systems.
2Adaptability or versatility
If a display unit is added to the night-vision system, then graphical content can be overlaid, but the space required increases
Solution Approach 1:
The display module is designed to be optically coupled to the intensifier module in a nested arrangement where the display unit is positioned to receive light from the intensifier tube and the beam combiner integrates both light paths. This nesting allows the display functionality to be incorporated within the existing optical train without requiring a completely separate housing, thereby minimizing the increase in device volume.
Solution Approach 2:
The patent utilizes the optical dimension by employing a beam combiner that merges the light path from the intensifier tube with the display output. Instead of adding the display unit in a linear spatial extension, the system uses optical superposition in the light path dimension, allowing graphical content to be overlaid on the night-vision image without proportionally increasing the physical volume of the device.
3Volume of stationary object
If the flex circuit is folded to expose light detectors, then compact integration is achieved, but the circuit layout complexity increases
Solution Approach 1:
The patent employs a flexible circuit board (flex circuit) to connect the display unit to the intensifier module. The flex circuit can be folded or bent to accommodate the compact integration requirements, allowing light detectors to be positioned in optimal locations while maintaining electrical connections. This flexibility enables compact integration without requiring complex rigid circuit board routing.
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 the integration of modern ancillary functionality, such as display units, reducing upgrade or replacement costs and extending the utility of night-vision systems.
Implementation Method 1
an intensifier module configured to intensify received light input into the intensifier module. The intensifier module may have an input side configured to receive photons of the received light and an output side configured to output intensified light resulting from the received light
Implementation Method 2
a beam combiner optically coupled to the display unit and the output side of the intensifier module and configured to combine the intensifier light and graphical content
Implementation Method 3
the flex circuit includes one or more light detectors and extending beyond a leading edge of the intensifier module
Data Source
AI summary
Aspects of the present disclosure relate generally to night-vision systems and more specifically to an integrated flex circuit. One example illustrated herein includes a method of upgrading a night-vision system. The method may include attaching a flex circuit to an intensifier module, in which the flex circuit includes one or more light detectors. The method may include inserting the intensifier module into a housing and folding the flex circuit to expose the one or more light detectors.