Light Guide Section Curved Reflection Surface Remote Control Signal
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Solution Overview
Problem
Thin display devices require a compact and high photosensitivity light receiving device to accommodate various installation patterns and thinner body designs, as existing solutions fail to efficiently receive remote control signal light beams across a wide range of angles and distances.
Innovation Solution
A light receiving device with a light guide section featuring an entrance plane, a first reflection surface with a circular arc and linear inclined surface, and a second reflection surface, which guides the remote control signal light beam to the light receiving section, allowing for efficient reflection and emission to enhance photosensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light receiving device uses a conventional flat light guide structure, then the device complexity is low, but the photosensitivity and incident angle range are insufficient
Solution Approach 1:
The first reflection surface is designed with a circular arc curved surface that is curved outward, replacing conventional flat surfaces. This curvature enables the light guide to receive and reflect light beams over a wider incident angle range, significantly improving photosensitivity while maintaining a compact structure suitable for thin display devices
Solution Approach 2:
The light guide structure transitions from a conventional two-dimensional flat planar structure to a three-dimensional structure with multiple inclined reflection surfaces. The first and second reflection surfaces are positioned at different heights and angles, creating a multi-dimensional light guiding path that captures light from various directions and enhances overall photosensitivity
2Volume of moving object
If the light receiving device is made compact for thin display devices, then the device size is reduced, but the light receiving area and incident angle range are limited
Solution Approach 1:
The light guide structure employs nested reflection surfaces where the first reflection surface is positioned above the second reflection surface, and both are contained within a compact housing. This nested arrangement allows multiple reflection functions to be integrated into a small volume, enabling wide incident angle coverage without increasing the overall device size
Solution Approach 2:
The circular arc curved surface on the first reflection surface provides a wide field of view for light reception. This curved geometry allows the compact light guide to capture light beams arriving from a broad range of angles, effectively expanding the incident angle range within a limited device volume
3Ease of manufacture
If the light guide structure is simplified, then the ease of manufacture is improved, but the light guiding efficiency and photosensitivity are reduced
Solution Approach 1:
The light guide structure is segmented into distinct functional surfaces: a first reflection surface with a circular arc curved surface and a second reflection surface with an inclined surface. Each surface is optimized for specific light guiding functions, and the segmentation allows for simplified manufacturing of each component while maintaining high overall light guiding efficiency through precise geometric design
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 enables operation of thin display devices by a remote controller at distances up to 15 meters with a wide incident angle range, providing improved photosensitivity and flexibility in installation patterns.
Implementation Method 1
a first reflection surface for reflecting the remote control signal light beam to the light receiving section, the first reflection surface being disposed to obliquely oppose to the entrance plane; a second reflection surface for guiding the remote control signal light beam entered from the entrance plane to the first reflection surface
Data Source
AI summary
A light receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.