Optoelectronic Assembly Self-Regulating Current Control
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Solution Overview
Problem
Optoelectronic components such as LEDs and OLEDs experience efficiency decreases and wavelength shifts over time and with temperature changes, requiring complex and costly open control loops for compensation.
Innovation Solution
An optoelectronic assembly with a photosensitive component connected in parallel to the emitting component, featuring a radiation-sensitive region in the beam path, which adjusts its electric resistance based on incident radiation to maintain constant current flow and radiation characteristics, effectively providing internal automatic control without the need for open loop systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If open control loops with photo-sensors are used to compensate for deterioration and temperature effects, then the electromagnetic radiation characteristics can be maintained, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the light-emitting function and light-detecting function into a single integrated assembly. The photosensitive component is electrically connected in parallel with the light-emitting component and positioned to detect its own emitted radiation, creating a self-contained feedback system that eliminates the need for separate external control circuits and sensors.
Solution Approach 2:
The light-emitting component serves dual purposes: it emits electromagnetic radiation for the intended application and simultaneously provides light to the photosensitive component for automatic current regulation. The system uses its own emitted radiation for control, making it self-regulating without external intervention.
2Reliability
If open control loops with photo-sensors are used to compensate for deterioration and temperature effects, then the electromagnetic radiation characteristics can be maintained, but the manufacturing cost increases
Solution Approach 1:
The patent merges the light-emitting function and light-detecting function into a single integrated assembly. The photosensitive component is electrically connected in parallel with the light-emitting component and positioned to detect its own emitted radiation, creating a self-contained feedback system that eliminates the need for separate external control circuits and sensors.
Solution Approach 2:
The light-emitting component serves dual purposes: it emits electromagnetic radiation for the intended application and simultaneously provides light to the photosensitive component for automatic current regulation. The system uses its own emitted radiation for control, making it self-regulating without external intervention.
3Productivity
If components emitting electromagnetic radiation operate for long periods, then productivity is maintained, but the light intensity and efficiency decrease due to deterioration
Solution Approach 1:
The photosensitive component continuously detects the intensity of electromagnetic radiation emitted by the light-emitting component and generates a control signal that feeds back to the power supply. This feedback mechanism automatically adjusts the current to compensate for intensity degradation over time, maintaining constant light output throughout the component's operational life.
Solution Approach 2:
The light-emitting component serves dual purposes: it emits electromagnetic radiation for the intended application and simultaneously provides light to the photosensitive component for automatic current regulation. The system uses its own emitted radiation for control, making it self-regulating without external intervention.
4Adaptability or versatility
If components emitting electromagnetic radiation are exposed to temperature changes, then adaptability to environmental conditions is improved, but the wavelength range shifts and efficiency decreases
Solution Approach 1:
The photosensitive component continuously detects the intensity of electromagnetic radiation emitted by the light-emitting component and generates a control signal that feeds back to the power supply. This feedback mechanism automatically adjusts the current to compensate for intensity degradation over time, maintaining constant light output throughout the component's operational life.
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 configuration ensures minimal modification of electromagnetic radiation over long operation periods and temperature changes, maintaining constant beam strength and wavelength range while being simpler and less expensive to implement.
Implementation Method 1
a first photosensitive component that controls the first component electrically connected in parallel with the first component and comprises a first radiation-sensitive region arranged in a beam path of the first electromagnetic radiation
Data Source
AI summary
An optoelectronic assembly includes at least one first component that emits first electromagnetic radiation and at least one first photosensitive component that controls the first component. The first photosensitive component connects in parallel to the first component and has a first radiation-sensitive region in a beam path of the first electromagnetic radiation.