Light Guide Plate With Recessed Reflector for Uniform Signal Lamp Lighting
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Solution Overview
Problem
Existing vehicle logos cannot be lit up efficiently, requiring numerous light sources that occupy large spaces, are costly, and lack uniform lighting.
Innovation Solution
A light guide plate design with a light guide plate body featuring a light incident portion, a recessed portion with a reflecting surface, and a light guide tooth pattern, allowing light to be reflected and emitted uniformly, reducing the number of light sources and improving optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light sources are arranged to fully fill the entire logo, then the logo can be lit up, but the space occupied is large and the cost is high
Solution Approach 1:
A light guide plate is introduced as an intermediary component between the light source and the logo display area. The light guide plate receives light from a concentrated light source and distributes it uniformly across the entire logo area through its optical properties, eliminating the need to place multiple light sources throughout the logo
Solution Approach 2:
The light guide plate creates a uniform light distribution pattern that copies the logo shape and distributes light evenly across it. Instead of placing light sources at every point of the logo, the light guide plate reproduces the uniform illumination effect across the entire logo area from a single or few light sources
2Illumination intensity
If light sources are arranged to fully fill the entire logo, then the logo can be lit up, but the lighting uniformity is poor
Solution Approach 1:
The light guide plate serves as an intermediary that homogenizes the light distribution. It takes the light from the source and redistributes it uniformly across the logo area, achieving consistent lighting intensity without requiring precise placement of multiple light sources
Solution Approach 2:
The light guide plate is designed to create homogeneous light distribution across the logo area. Through its optical properties and structure, it ensures that the light intensity is uniform throughout the entire logo display area, eliminating hot spots and dark areas
3Illumination intensity
If multiple light sources are used to illuminate the logo, then the logo can be lit up, but the cost is high
Solution Approach 1:
The light guide plate acts as a cost-effective intermediary that allows the use of fewer, cheaper light sources while still achieving the desired lighting effect. This reduces the overall bill of materials cost compared to using multiple expensive light sources distributed throughout the logo
Solution Approach 2:
The light guide plate performs multiple functions: it distributes light uniformly, defines the logo shape, and provides structural support for the logo display. This multi-functionality reduces the need for additional components, thereby lowering manufacturing costs
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 design achieves uniform lighting with fewer light sources, reducing costs and enhancing optical efficiency while increasing the light-emitting area.
Implementation Method 1
a wall surface at the recessed portion is configured to be a reflecting surface; light incident into the light incident portion is adapted to be reflected by the reflecting surface to a side of the light guide plate body
Data Source
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AI summary
The present application relates to a signal lamp, and discloses a light guide plate. The light guide plate comprises a light guide plate body, wherein front and rear sides of the light guide plate body in a thickness direction are a first side and a second side respectively; one of the first side and the second side is provided with a light incident portion, and the other of the first side and the second side is partially recessed inward to form a recessed portion; the recessed portion is arranged corresponding to the light incident portion, and a wall surface of the recessed portion is configured to be a reflecting surface; one of the first side and the second side is formed as a light emitting surface, and the other of the first side and the second side is provided with a light guide tooth pattern; light incident into the light incident portion is adapted to be reflected by the reflecting surface to a side of the light guide plate body, and then reflected by the light guide tooth pattern on the side and emitted out of the light emitting surface. In addition, the present application further provides a signal lamp and a vehicle. The light guide plate can realize uniform light distribution and improve optical efficiency, and has a low cost.