Concave Photoelectric Receiver Layout for Uniform Feed Light

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Solution Overview

Problem

Existing photoelectric conversion devices suffer from low use efficiency due to uneven light distribution across their light-receiving surfaces, leading to overheating and reduced output when high-intensity light is transmitted, as excessive light at one part causes saturation while other parts receive insufficient light.

Innovation Solution

A powered device with photoelectric conversion elements arranged in a concave shape, ensuring that light is received almost equally and perpendicularly across their surfaces, preventing overheating and maximizing efficiency by distributing light uniformly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If high-intensity light is transmitted through optical fiber to increase power output, then the power supply capability is improved, but the light distribution becomes uneven across the photoelectric conversion element surface, causing local overheating and saturation

Engineering Contradiction:
Improvepower supply capabilityVSAvoidlocal temperature
Core Design Contradiction:
PowerVSTemperature

Solution Approach 1:

The photoelectric conversion element is divided into multiple elements arranged in a concave pattern, with each element receiving light from a specific angular range. This segmentation distributes the total light energy across multiple converted units, preventing concentration of energy at any single location and thereby reducing local overheating while maintaining high overall power conversion capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The light-receiving surfaces are arranged in a concave (curved) configuration rather than a flat plane. This curvature creates angular separation between different light rays and distributes incident light more uniformly across the photoelectric conversion elements. The concave shape naturally spreads high-intensity light over a larger effective area, preventing local saturation and overheating while preserving high power conversion efficiency.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Productivity

If light-receiving surfaces are arranged in a concave shape to improve uniformity, then the use efficiency is improved, but the device structure becomes more complex

Engineering Contradiction:
Improveuse efficiencyVSAvoidstructural complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The invention transitions from a two-dimensional flat arrangement to a three-dimensional concave configuration. By utilizing the third dimension (depth/curvature), the system achieves superior light distribution uniformity without requiring additional optical components or complex control mechanisms. The spatial arrangement itself in multiple dimensions provides the uniformity benefit, making the solution elegant despite the increased structural complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 concave arrangement of photoelectric conversion elements ensures uniform light distribution, preventing overheating and increasing the overall efficiency of the device by allowing all elements to approach saturation simultaneously, thereby enhancing the use efficiency of the device.

Implementation Method 1

converting the transmitted light into electric power with a photoelectric conversion element(s)

Methodology Applied
Scientific EffectPhotoelectric conversion: Photoelectric Effect

Data Source

PatentUS11949247B2Powered device and optical transmission system
Publication Date: 2024.04.02 KYOCERA CORP
  • US11949247B2 patent drawing
  • US11949247B2 patent drawing
  • US11949247B2 patent drawing

AI summary

A powered device includes a plurality of photoelectric conversion elements. The photoelectric conversion elements receive feed light. The photoelectric conversion elements are disposed such that light-receiving surfaces of the photoelectric conversion elements are arranged in a concave shape.