Car Lamp Light-Guiding Element with Reflective Planes
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Solution Overview
Problem
Existing car lamp structures using light-guiding elements to adjust light shape are limited, leading to reduced luminous efficacy and increased power requirements to maintain brightness.
Innovation Solution
A car lamp structure featuring a light-guiding element with side oblique planes and reflective surfaces that reflect incident light to adjust the shape of emergent light, avoiding the reduction in luminous efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a shielding member is disposed to directly block part of the emergent light for adjusting the shape of the emergent light, then the shape of emergent light can be adjusted, but the luminous efficacy of car lamps is reduced and more power is required
Solution Approach 1:
The patent introduces a light-guiding element with reflective planes as an intermediary component between the light source and the external environment. This element guides and shapes the emergent light through internal reflection surfaces, eliminating the need for external shielding members that would block and waste light. The reflective planes within the light-guiding element redirect light efficiently to achieve the desired shape without energy loss.
Solution Approach 2:
The patent replaces the mechanical shielding system (physical blocking) with an optical guiding system using reflective surfaces. Instead of using a shielding member to mechanically block light paths, the invention uses precisely angled reflective planes within the light-guiding element to redirect and shape the light, substituting a mechanical blocking approach with an optical redirection approach that preserves luminous efficacy.
2Shape
If a shielding member is disposed to directly block part of the emergent light for adjusting the shape of the emergent light, then the shape of emergent light can be adjusted, but more power is required to meet the brightness requirements
Solution Approach 1:
The light-guiding element with reflective planes serves as an intermediary that efficiently directs light to achieve the desired shape without energy loss. This eliminates the need for additional power consumption that would result from using shielding members to block light, as the reflective guiding system preserves luminous efficacy while achieving shape control.
3Shape
If light-guiding elements are used to change the shape of the emergent light according to the prior art, then the shape can be adjusted, but the range of changing the shape of light is limited
Solution Approach 1:
The light-guiding element is segmented into multiple functional surfaces including first and second light-emergence planes, first and second reflective planes, and first and second oblique planes. Each segmented surface can independently control different aspects of light direction and shape, providing a comprehensive range of shape adjustment capabilities that overcome the limitations of prior art single-configuration light-guiding elements.
Solution Approach 2:
Different surfaces of the light-guiding element have different local optical properties and orientations. The reflective planes have specific reflectivity characteristics, while the oblique planes have specific angles for directing light. This local differentiation of surface properties enables versatile shape control across multiple dimensions, significantly expanding the adaptability compared to uniform prior art designs.
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 structure effectively adjusts the shape of emergent light without compromising the overall luminous efficacy of the car lamp, thereby maintaining brightness without the need for increased power consumption.
Implementation Method 1
By using reflective planes, part of incident light is reflected to the light-emergence planes
Implementation Method 2
uses a light-guiding element to guide the light from a light-emitting device
Data Source
AI summary
The present invention provides a structure of car lamp comprising a light-guiding element and a light-emitting device. The width of a first body shrinks gradually from a first light-emergence plane to a first light-incidence plane and forming a first side oblique plane and a second side oblique plane. A second body of the light-guiding element includes a second light-incidence plane and a second light-emergence plane. The second light-incidence plane is connected to the first light-emergence plane. The first body includes side oblique planes and oblique planes; the second body includes a third side oblique plane, a reflective plane, and oblique planes. By using the side oblique planes, the reflective planes, and the oblique planes to reflect part of incident light out of the light-guiding element, the reduction of the overall luminous efficacy of the structure of car lamp can be avoided.