Light Receiving Device Boundary Surface for Efficiency
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Solution Overview
Problem
Existing light receiving devices have low light receiving efficiency due to the limited range of remote control signal light that can be guided to the light receiving window, especially when the light guide is made thinner or the light receiving sensor is made smaller.
Innovation Solution
A light receiving device with an optical sensor and a light guide that includes a boundary surface to direct incident light rays from the incidence surface to the emission surface, enhancing the light receiving efficiency by guiding and reflecting light rays to the sensor, and a display apparatus body that integrates the light receiving device for improved remote control and environmental light detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the light guide is made thinner or the light receiving sensor is made smaller, then the device size is reduced, but the light receiving efficiency is lowered
Solution Approach 1:
The patent introduces a boundary surface that extends in a direction intersecting both the incident light direction and the normal of the incident surface, creating a three-dimensional light guiding structure. This dimensional approach allows the light guide to effectively guide light rays from a wider incident area to the light receiving window, maintaining high light receiving efficiency even when the device size is reduced.
Solution Approach 2:
The patent changes the geometric parameters of the light guide by introducing a specifically designed boundary surface with defined orientation and position. This boundary surface parameter modification enables the light guide to maintain effective light guidance capability while allowing for reduction in overall device dimensions, thus resolving the contradiction between device size and light receiving efficiency.
2Device complexity
If the light guide is made thinner, then the device complexity is reduced, but the light receiving efficiency is lowered
Solution Approach 1:
The light guide structure is segmented into distinct functional surfaces: the incident surface for light entry, the boundary surface for light direction control, and the emission surface for light output. This segmentation allows each surface to be optimized independently, enabling the light guide to maintain high light receiving efficiency through the strategically positioned boundary surface while keeping the overall structure relatively simple and thin.
3Area of moving object
If the light receiving window size is reduced, then the device size is reduced, but the light receiving efficiency is lowered
Solution Approach 1:
By introducing a boundary surface that extends in an intersecting direction, the patent creates a three-dimensional light guiding pathway that expands the effective light collection area beyond the physical light receiving window. This allows more light rays from a wider incident area to be guided to the smaller light receiving window, maintaining high light receiving efficiency even with a reduced window size.
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 solution significantly enhances light receiving efficiency, allowing for a longer remote control reaching range and reduced device size, while minimizing the impact of indicator light on environmental light detection.
Implementation Method 1
the incident remote control signal light is reflected and refracted inside the light guide
Implementation Method 2
the incident remote control signal light is reflected and refracted inside the light guide
Implementation Method 3
a boundary surface that directs the light ray incident from a side where the incidence surface is present toward the emission surface
Data Source
AI summary
A light receiving device includes an optical sensor having a light receiving surface, and a light guide having an incidence surface on which a light ray is incident, an emission surface through which the light ray is emitted toward the light receiving surface, and a boundary surface that directs the light ray incident from a side where the incidence surface is present toward the light receiving surface.