Surface-Emitter Optoelectronic Converter for Isolated High Voltage
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Solution Overview
Problem
Existing optoelectronic devices face challenges in achieving a compact size while providing high-voltage supplies with low current consumption and ensuring galvanic isolation, especially in applications like AR-VR glasses and automotive systems, where space, weight, and energy efficiency are critical, and magnetic interference is a concern.
Innovation Solution
The optoelectronic device combines semiconductor light emitters and photodiodes to convert low input voltage into high output voltage, using a transmitter with surface emitters and receivers, which are galvanically isolated, allowing for optical power transfer without inductive elements, thus maintaining a small footprint and avoiding magnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional electromagnetic transformers are used for voltage conversion, then voltage conversion is achieved, but the device size and weight increase due to inductive elements
Solution Approach 1:
The patent replaces the mechanical electromagnetic induction system (transformers with coils and magnetic cores) with an optoelectronic system using light-emitting diodes and photodiodes. This substitution eliminates heavy inductive elements while achieving the same voltage conversion function through optical energy transfer, directly resolving the contradiction between power conversion capability and device weight.
Solution Approach 2:
The patent introduces optical radiation (light) as an intermediary medium to transfer energy between the transmitter and receiver. Instead of direct electromagnetic coupling through heavy inductive elements, the system uses light as a mediator to convey energy across the air gap, achieving voltage conversion without the weight penalty of conventional transformers.
2Power
If conventional electromagnetic transformers are used for voltage conversion, then voltage conversion is achieved, but the device footprint increases
Solution Approach 1:
The patent replaces the mechanical electromagnetic induction system (transformers with coils and magnetic cores) with an optoelectronic system using light-emitting diodes and photodiodes. This substitution eliminates bulky inductive elements while achieving the same voltage conversion function through optical energy transfer, directly resolving the contradiction between power conversion capability and device footprint.
Solution Approach 2:
The patent transitions from planar electromagnetic coupling to three-dimensional optical energy transfer through an air gap. The light-emitting diodes emit radiation in multiple directions, and the photodiodes are positioned to capture this radiation in three-dimensional space, enabling compact integration without the large footprint required by conventional transformers.
3Reliability
If galvanic isolation is implemented using conventional methods, then electrical isolation is achieved, but magnetic interference occurs
Solution Approach 1:
The patent introduces optical radiation (light) as an intermediary medium to transfer energy between the transmitter and receiver. Instead of direct electromagnetic coupling through heavy inductive elements, the system uses light as a mediator to convey energy across the air gap, achieving voltage conversion without the weight penalty of conventional transformers.
4Weight of stationary object
If compact design is pursued for AR-VR glasses and automotive systems, then space and weight are reduced, but energy transfer efficiency decreases
Solution Approach 1:
The patent optimizes key parameters including the wavelength of light emitted by the LEDs to match the peak sensitivity of the photodiodes, adjusts the air gap distance to maximize coupling efficiency, and positions the photodiodes at optimal angles to capture maximum radiation. These parameter optimizations ensure high energy transfer efficiency despite the compact form factor required for AR-VR glasses and automotive applications.
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
This solution enables efficient energy transfer and voltage conversion in a compact form, ensuring functional reliability and stability under varying conditions, with the ability to transform AC to DC and vice versa, while maintaining galvanic isolation and minimizing size and weight.
Implementation Method 1
a transmitter (1) configured to emit electromagnetic radiation (2) and to be operated with an input voltage
Implementation Method 2
a first receiver (3) configured to receive at least part of the electromagnetic radiation (2) and to supply at least part of an output voltage
Data Source
AI summary
An optoelectronic device is specified having a transmitter which is designed to emit electromagnetic radiation and to be operated at an input voltage, a support for the transmitter, said support having a top surface and a bottom surface, a first receiver which is designed to receive at least part of the electromagnetic radiation and to supply at least part of an output voltage, wherein the transmitter comprises at least one surface emitter, the at least one surface emitter of the transmitter is mounted on the top surface of the support and radiates at least part of the electromagnetic radiation through the support, the first receiver (3) comprises at least one photodiode, and the first receiver is arranged on the bottom surface of the support.