Vehicle Lamp Light Guide for 3D Floating Emission
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Solution Overview
Problem
Existing vehicle lamps struggle to create a three-dimensional effect or a floating feeling of emission due to limitations in light diffusion and design.
Innovation Solution
A vehicle lamp design featuring a light guide body with a first and second light guide part connected, where the second part includes light emitting parts and transmissive parts, and light sources are disposed to face each other, using two-color molding of a light transmitting member and diffusing material to guide and diffuse light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide body with uniform light diffusion is used, then the light emitting surface emits light uniformly, but it is difficult to create a three-dimensional effect or floating feeling of emission
Solution Approach 1:
The light guide body is segmented into alternating light emitting parts and transmissive parts along the light guiding direction. This segmentation creates distinct zones that emit light at different intensities, producing a three-dimensional effect and floating feeling while maintaining overall uniformity through the alternating pattern
Solution Approach 2:
Different regions of the light guide body are assigned different optical properties: light emitting parts contain light diffusing material for strong light emission, while transmissive parts have minimal diffusion material for weaker emission. This local differentiation creates the desired three-dimensional effect while the overall alternating pattern maintains uniformity
2Illumination intensity
If light diffusing material is dispersed in a light transmitting member, then light can be diffused effectively, but the manufacturing process becomes more complex
Solution Approach 1:
The light transmitting member and light diffusing material are merged into a single integrated light guide body through two-color injection molding. This combining of materials and processes achieves effective light diffusion while streamlining manufacturing compared to assembling separate components
Solution Approach 2:
The light guide body uses composite materials consisting of a light transmitting member (such as polycarbonate or acrylic resin) combined with light diffusing material (such as titanium oxide, silicon oxide, or calcium carbonate particles). This composite structure enables effective light diffusion while the two-color molding process makes manufacturing feasible
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 a three-dimensional effect and a floating feeling of emission by diffusing light through alternating light emitting and transmissive parts, enhancing the visual appearance of the lamp.
Implementation Method 1
a light guide body configured to guide light emitted from the light sources from one end side toward other end side of the light guide body
Implementation Method 2
the second light guide part has a plurality of light emitting parts, which is disposed side by side in the one direction and which is configured to emit the light by diffusing the light
Data Source
AI summary
A vehicle lamp includes light sources, and a light guide body configured to guide light emitted from the light sources from one end side toward an other end side of the light guide body. The light guide body has a shape in which a first light guide part located in front of the light sources and a second light guide part extending in one direction between one end side and the other end side are connected. The second light guide part has a plurality of light emitting parts, which are disposed side by side in one direction and which are configured to emit the light by diffusing the light, and transmissive parts which are disposed between the neighboring light emitting parts and which are configured to transmit the light.