Active Optical Cable Transceiver for Helmet-Mounted Display Weight Reduction
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Solution Overview
Problem
Copper cables used in helmet-mounted displays and virtual reality goggles are heavy, bulky, and limited by data types and communication speed, with heat generation issues.
Innovation Solution
Active optical cables with customized transceiver modules and fiber optic cables, including board-mount, flexible, or flex-rigid connectors, for efficient data conversion and transmission, supporting multiple data types and protocols, and enabling quick-release connections for emergency detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If copper cables are used for data transmission in helmet-mounted displays, then electrical data communication is achieved, but the cable becomes heavy and bulky
Solution Approach 1:
The patent replaces copper electrical cables with an active optical cable system that uses light for data transmission. The mechanical copper conductor is substituted with optical fibers and transceiver modules that convert electrical signals to optical signals and back, eliminating the need for heavy copper cables while maintaining data transmission capability
Solution Approach 2:
The patent changes the fundamental transmission medium from electrical conductors to optical waveguides. By transforming the data transmission parameter from electrical signals through copper to optical signals through fiber, the system achieves weight reduction while preserving communication reliability
2Temperature
If copper cables are used for data transmission, then electrical connection is established, but heat is radiated
Solution Approach 1:
The patent substitutes the electrical conduction system with an optical transmission system. The transceiver modules convert electrical signals to optical signals, transmitting data through optical fibers without the resistive heating inherent in copper cables, thereby eliminating heat radiation while maintaining transmission reliability
Solution Approach 2:
The patent introduces transceiver modules as intermediary devices that act as converters between electrical and optical domains. These modules transform electrical signals to optical signals for transmission through the cable, serving as a mediator that eliminates direct electrical conduction and associated heat generation
3Speed
If copper cables are used, then data communication is achieved, but communication speed and data types are limited
Solution Approach 1:
The patent implements a universal optical interface that can handle multiple data types and protocols through the same physical medium. The transceiver modules and optical cable system provide a platform that supports various communication standards and data formats, enhancing adaptability while enabling high-speed transmission
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 active optical cables are lighter, less bulky, reduce data loss, enhance communication speed, and improve signal-to-noise ratio, while supporting multiple data types and protocols, and provide a safer, more efficient alternative to copper cables.
Implementation Method 1
an optical engine communicatively coupled to the one or more media converters to output the converted electrical data as optical data
Implementation Method 2
The AOC includes a cable assembly including at least fiber optic cables with one end of the cable assembly communicatively couple to the transceiver module to receive the optical data output from an optical engine
Data Source
AI summary
An active optical cable (AOC) for a helmet mounted display (HMD) or goggles includes a transceiver module having a rigid-flex or flex connector packaging to physically couple with an electrical data interface of the HMD or goggles. The transceiver module includes one or more media converters to receive electrical data of multiple formats from the HMD or googles and convert the received electrical data to a common format, and an optical engine communicatively coupled to the one or more media converters to output the converted electrical data as optical data. The AOC includes a cable assembly including at least fiber optic cables with one end of the cable assembly communicatively couple to the transceiver module to receive the optical data output from optical engine; and another transceiver module having a quick-release connector packaging and communicatively coupled to other end of the cable assembly to receive the optical data.