Single Lens Multi-LED Optical Module for Compact TV State Indication
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Solution Overview
Problem
The challenge lies in balancing the convenience of using multiple LEDs for state indication in electronic devices with the demand for reducing the size and space occupancy of these devices, as excessive lighting complicates space-saving designs.
Innovation Solution
The implementation of a television apparatus with a printed wiring board featuring a cutout portion and side-lighting first LEDs, paired with a lens having light receiving parts that correspond to the LEDs, allows for efficient light display while minimizing the number of lenses and reducing the device's size, enhancing illumination efficiency and preventing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LEDs are provided for state indication and button illumination, then the convenience and functionality are improved, but the number of components and space occupancy increase
Solution Approach 1:
A single lens serves multiple functions by incorporating multiple light receiving parts of different colors (red, green, blue) that can detect different LED states. The lens also provides illumination for transparent buttons and displays operational states simultaneously, eliminating the need for separate components for each function.
Solution Approach 2:
Multiple light receiving parts for different colored LEDs are integrated into a single lens structure rather than using separate lenses for each LED. This merging reduces the total number of components while maintaining the ability to detect multiple states independently.
2Measurement precision
If multiple separate lenses are provided for each LED, then the light detection accuracy is improved, but the device size and space occupancy increase
Solution Approach 1:
The single lens is segmented into multiple light receiving parts, each with specific color transmission properties (red, green, blue filters). This segmentation allows precise detection of different LED colors while maintaining a compact single-lens structure that occupies less space than multiple separate lenses.
Solution Approach 2:
Instead of placing multiple lenses side by side in the horizontal plane, the patent integrates multiple light receiving parts vertically within a single lens structure. This dimensional reorganization maintains detection precision while reducing the horizontal footprint and overall device size.
3Quantity of substance
If the number of lenses is reduced for space saving, then the space occupancy is reduced, but the assembly alignment and light viewability may be compromised
Solution Approach 1:
Multiple light receiving parts are nested within a single lens structure, with each part positioned in a predetermined location. This nested arrangement simplifies assembly by reducing the number of separate components that need to be aligned, as the multiple light receiving parts are already precisely positioned within the single lens housing.
Solution Approach 2:
The lens incorporates color filters (red, green, blue) in specific regions that correspond to different LED positions. This color-coding system ensures proper alignment and light viewability by allowing each light receiving part to selectively detect its corresponding LED color, maintaining manufacturing precision even with reduced component count.
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 effectively reduces the space occupied by lenses, improves illumination efficiency, and ensures proper assembly by positioning LEDs close to the lenses, while maintaining effective light viewability even when space is limited, thus addressing the size and space-saving demands.
Implementation Method 1
an operation part such as a button is often illuminated by a light such as a light emitting diode (LED)
Data Source
AI summary
According to one embodiment, an electronic apparatus comprises a housing with a display, a printed wiring board, and a lens. The housing comprises a side surface with an opening. The printed wiring board positioned in the housing along with a light-emitting portion on the printed wiring board. The lens is situated adjacent to the printed wiring board and comprises a light guide configured to guide light from a plurality of light-receiving portions to the opening.