Motorcycle Lamp Front Optics Curvature for Lateral Visibility
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Solution Overview
Problem
Existing motorcycle lamps require additional optical elements on the light-emission surface of the front optics to meet legal requirements for lateral visibility, which makes them prone to dirt and insect accumulation and difficult to clean.
Innovation Solution
A motorcycle lamp design featuring a front optics with a convex curvature in the horizontal plane and a smaller or flat curvature in the vertical plane, eliminating the need for additional optical elements by refracting light to achieve the required lateral visibility through the shape of the light-emission surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional optical elements are added on the light-emission surface of the front optics to meet lateral visibility requirements, then lateral visibility is improved, but the light-emission surface becomes non-smooth and difficult to clean
Solution Approach 1:
The front optics is designed with a curved light-emission surface having a convex curvature in the horizontal plane and a smaller or zero curvature in the vertical plane. This curvature refracts light to achieve the required lateral visibility distribution without adding protruding optical elements, maintaining a smooth surface that is easy to clean and free from dirt and insect accumulation.
2Reliability
If additional optical elements are added on the light-emission surface, then lateral visibility is improved, but the device complexity increases
Solution Approach 1:
The functions of light emission and light refraction are merged into a single front optics component. The curved light-emission surface of the front optics itself performs the refraction function that would otherwise require separate optical elements, simplifying the overall device structure while meeting lateral visibility requirements.
Solution Approach 2:
The front optics serves multiple functions: it emits light from the LED, refracts light to achieve required lateral visibility distribution, and maintains a smooth cleanable surface. This multi-functional design eliminates the need for additional specialized optical elements.
3Ease of operation
If the light-emission surface is made smooth without additional optical elements, then cleaning ease is improved, but lateral visibility may be insufficient
Solution Approach 1:
The curvature parameters of the light-emission surface are specifically optimized: a convex curvature in the horizontal plane for light refraction to achieve lateral visibility, and a smaller or zero curvature in the vertical plane to maintain a smooth surface. This parameter optimization allows the surface to be both functional and cleanable.
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 enhances lateral visibility while maintaining a smooth light-emission surface, reducing dirt and insect accumulation and simplifying cleaning, and meets or exceeds legal requirements for lateral visibility without additional optical elements.
Implementation Method 1
a front optics made of a solid transparent material disposed between the at least one light source and the light-emission aperture, wherein the front optics closes the light-emission aperture and deflects and shapes the light emitted by the at least one light source
Implementation Method 2
a light-emission surface of the front optics has a first convex curvature when viewed in a horizontal plane, extending through the light source or one of the light sources and comprising the main emission direction of the light source
Data Source
AI summary
The invention relates to a motorcycle lamp (2) for implementing at least one lamp function. The motorcycle lamp (2) comprisesa housing (4) having a light-emission aperture (6),a bracket (8) mounted on the housing (4) for securing the motorcycle lamp (2) to a motorcycle,at least one light source (10) disposed in the housing (4) anda front optics (12) made of a solid transparent material disposed between the at least one light source (10) and the light-emission aperture (6),wherein the at least one light source (10) comprises an LED and is disposed and oriented in the housing (4) such that it emits light in a main radiation direction (14) extending through the light-emission aperture (6), andwherein the front optics (12) closes the light-emission aperture (6) and deflects and shapes the light emitted by the at least one light source (10) to generate a light distribution corresponding to a lamp function implemented by the motorcycle lamp (2). In order for the lamp (2) to improve the lateral perceptibility without the use of additional optical elements in the optical path, it is proposed that a light-emission surface (16) of the front optics (12) has a first convex curvature when viewed in a horizontal plane (yz) and a second convex curvature when viewed in a vertical plane (xz), the latter being smaller than the first convex curvature in the horizontal plane (yz) or flat.