Vehicle Headlight Reflector Notches to Eliminate Side Dark Areas
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Solution Overview
Problem
Existing vehicle headlights form dark areas on both left and right sides in the light distribution pattern due to light being blocked by the reflecting portion, leading to inefficient light emission.
Innovation Solution
The vehicle headlight design includes a reflector unit with notches extending in an upward-and-downward direction from the edges of the opening, allowing light to pass through and be incident on the reflecting portion from both sides, thereby reducing dark areas in the light distribution pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the reflecting portion is located in front of the light source to form a light distribution pattern, then the light can be reflected forwards to create beam patterns, but dark areas are formed on both left and right sides due to light being blocked by the reflecting portion
Solution Approach 1:
The reflector unit is divided into multiple separate reflecting portions (first reflecting portion, second reflecting portion, third reflecting portion, fourth reflecting portion) positioned at different locations and orientations. Each reflecting portion handles a specific angular range of light reflection, preventing mutual blockage and ensuring comprehensive light distribution without dark areas on the left and right sides.
2Shape
If the opening is surrounded by a reflecting portion to expose the light source, then the light distribution pattern can be formed, but light from the light source is less likely to be incident on portions of the reflecting portion outside the opening
Solution Approach 1:
The solution extends the light reflection geometry into multiple angular dimensions by positioning reflecting portions at different angular locations (front, side, rear positions). This multi-dimensional arrangement ensures that light from the exposed light source can be incident on all reflecting portions from various angles, eliminating the limitation of single-plane reflection and ensuring uniform 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
This configuration suppresses the formation of dark areas on both left and right sides in the light distribution pattern, ensuring more even light emission and distribution.
Implementation Method 1
the reflecting portion reflects the light emitted from the emission surface forwards
Data Source
AI summary
A vehicle headlight includes: a second light source having an emission surface of light, the emission surface facing a front side of the second light source; a reflector unit having a second opening configured to allow the emission surface to be exposed therethrough, and a second reflecting portion disposed on a front side of the emission surface and configured to surround the second opening, in which the second reflecting portion reflects the light emitted from the emission surface forwards, and the second reflecting portion has notches provided therein, in which the notches respectively extend in an upward-and-downward direction from both left and right sides of at least one of an upper edge and a lower edge of the second opening and allow a part of the light emitted from the emission surface to pass therethrough.