Optical Lens for Bilateral Light Distribution Control
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Solution Overview
Problem
Existing solutions for light distribution control in car side pilot lamps using LEDs are cumbersome and costly, with limited luminous intensity on required bilateral sides due to the narrow directivity of LEDs and the need for complex wiring and additional components.
Innovation Solution
An optical lens is disposed in front of a light source with multiple LEDs arranged in parallel columns, featuring light distribution control parts that sequentially shorten optical paths to direct light efficiently to the required directions, avoiding interference and ensuring even intensity distribution on bilateral sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an LED is disposed on a single circuit board, then the structure is simplified, but light distribution on bilateral sides is insufficient due to narrow directivity
Solution Approach 1:
An optical lens is introduced as an intermediary component between the LED and the surrounding environment. The lens modifies the light distribution pattern without requiring changes to the LED itself or the circuit board structure, thereby maintaining structural simplicity while achieving proper bilateral light distribution.
Solution Approach 2:
The optical characteristics of the light are changed by using a lens with specific refractive properties. The lens transforms the narrow directivity of the LED into a broader radiation pattern that covers the required bilateral directions, effectively changing the light distribution parameters without altering the physical structure.
2Illumination intensity
If 2 circuit boards are provided for LEDs inclined in 2 directions, then light distribution on bilateral sides is improved, but assembly becomes cumbersome and costly
Solution Approach 1:
The function of multiple circuit boards inclined in different directions is merged into a single circuit board with LEDs arranged in specific patterns. This consolidation reduces the number of components from two circuit boards to one, simplifying the overall structure while maintaining the required light distribution characteristics through proper LED arrangement and optical lens design.
Solution Approach 2:
A single circuit board is designed to perform the function that previously required two separate circuit boards. The universal design allows the same circuit board to achieve bilateral light distribution through strategic LED placement and optical lens configuration, eliminating the need for specialized inclined circuit boards.
3Illumination intensity
If a lens diffuses light in lateral directions, then light distribution is improved, but too much light is distributed in unwanted directions, degrading radiation efficiency
Solution Approach 1:
Instead of uniform light diffusion in all lateral directions, the optical lens is designed to provide localized light distribution with different intensities in different directions. The lens creates zones of high intensity in the required bilateral directions while minimizing light distribution in unwanted directions, thereby maintaining radiation efficiency while achieving proper light distribution.
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 optical lens achieves efficient light distribution with high luminous intensity on bilateral sides and front, reducing complexity and cost by focusing light in desired directions without unnecessary diffusion, enhancing visibility and reliability of the car side pilot lamp.
Implementation Method 1
an optical lens, which is disposed in front of a light source, for achieving light distribution control of light from the light source
Data Source
AI summary
An optical lens capable of facilitating efficient light distribution control with a simple configuration includes a plurality of light distribution control parts arranged in a bilateral direction such that each of the light distribution control parts corresponds to each column of LEDs. The light distribution control parts define optical paths of light from the LEDs. The optical paths are sequentially shortened from one end side to the other end side in the bilateral direction. The light distribution control parts guide the light in a direction that intersects optical axes of the LEDs.