Light Guide Element Using Bezier Profile Curves for Beam Angle Control
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Solution Overview
Problem
Conventional lamps have limited light shape diversity and require costly structural modifications to adjust light beam angles, leading to increased costs and reduced applicability.
Innovation Solution
A light guide element using total reflection and Bezier curve-defined profile curves to adjust light beam angles, allowing for intuitive control of light form and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reflecting mask is used to guide light and change light shapes, then light direction control is achieved, but light shape diversity is limited and applicability is reduced
Solution Approach 1:
The patent changes the geometric parameters of the light guide element by using different profile curves (first, second, and third profile curves with different shapes and positions) to generate various light beam angles. By adjusting the parameters of these profile curves, the system can achieve diverse light shapes without changing the basic structure, thus resolving the contradiction between light shape diversity and structural complexity.
2Adaptability or versatility
If a secondary optical element with recess is used to change light shape, then light shape adjustment is achieved, but structural redesign is required for different light sources resulting in cost increase
Solution Approach 1:
The light guide element is designed as a universal component that can work with different types and quantities of light sources. The element includes a through hole that can accommodate various light source configurations, and the profile curves can be adjusted to achieve different light shapes. This multi-functional design eliminates the need for structural redesign when changing light sources, reducing manufacturing costs while maintaining adaptability.
3Use of energy by moving object
If conventional lamps are used to provide illumination, then basic lighting is achieved, but power consumption is high
Solution Approach 1:
The patent replaces conventional bulb-based lighting systems with LED light sources combined with a light guide element. LEDs inherently consume less power while providing sufficient illumination intensity. The light guide element efficiently directs the LED light output through total internal reflection, minimizing energy loss and maximizing light utilization, thus achieving both reduced power consumption and maintained illumination intensity.
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 light guide element achieves versatile light beam angle adjustments, enhancing applicability and reducing power consumption while simplifying the definition of curved surfaces.
Implementation Method 1
The light guide element is suitable for guiding at least one light beam, in which the at least one light beam is totally reflected in the light guide element to generate a predetermined light beam angle
Data Source
AI summary
A light guide element for controlling light shape includes a light-incident surface, a light-emitting surface, a first reflecting surface, and a second reflecting surface. The light-incident surface includes a first outer peripheral edge and a first inner peripheral edge. The light-emitting surface includes a second outer peripheral edge and a second inner peripheral edge. The first reflecting surface is constructed by a first profile curve, and connects the first and the second outer peripheral edge. The first profile curve is a connecting line of two points respectively on the first outer peripheral edge and the second outer peripheral edge. The second reflecting surface is constructed by a second profile curve, and connects the first and the second inner peripheral edge. The second profile curve is a connecting line of two points respectively on the first inner peripheral edge and the second inner peripheral edge.