Ogive Optical Light Guide for Wide-Angle Vehicle Signal Lamps
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Solution Overview
Problem
Existing light signal lamps for large vehicles face challenges in reconciling mechanical mounting, electrical connection, desired aesthetics, and regulatory light distribution and intensity constraints.
Innovation Solution
An optical device with an ogive-shaped output portion that enhances light beam angular amplitude by reflecting and transmitting light rays, allowing for greater light intensity and directional control, while simplifying component arrangement and reducing bulk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light signal lamp designs are used, then mechanical mounting and electrical connection constraints are met, but light distribution and intensity fail to meet regulatory requirements
Solution Approach 1:
The patent employs curved refractive surfaces within the optical device to redirect and distribute light rays. The curved geometry enables efficient light redistribution to achieve required intensity patterns without adding complex mechanical or electrical subsystems, thus meeting regulatory light distribution requirements while maintaining device simplicity.
2Ease of operation
If multiple separate components are used for mounting and connections, then mechanical and electrical constraints are satisfied, but the overall device bulk and complexity increase
Solution Approach 1:
The patent integrates mounting features and electrical connection interfaces directly into the housing structure itself. The housing incorporates integrated mounting tabs or attachment features and built-in electrical contacts, eliminating the need for separate mounting brackets or connection assemblies. This merging of functions reduces the overall device bulk while simplifying installation and operation.
3Illumination intensity
If conventional optical shapes are used, then manufacturing is simple, but light beam angular amplitude is insufficient
Solution Approach 1:
The patent utilizes specifically designed curved refractive surfaces with optimized radii and profiles within the optical element. These curved geometries are engineered to expand the light beam's angular amplitude by refracting light at controlled angles, achieving wider light distribution patterns required by regulations while maintaining a relatively simple monolithic optical component structure.
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 optical device achieves improved light intensity and distribution within regulatory limits, offering aesthetic and functional advantages with a single electrical and mechanical connection system.
Implementation Method 1
beyond a certain angle of incidence with the lateral face, a light ray propagating in the optical device is not transmitted but on the contrary reflected, thus being returned inside the optical device
Implementation Method 2
an optical device in the form of a block of transparent or translucent material having a longitudinal direction and comprising an input portion configured to receive rays emitted by at least one light source
Data Source
AI summary
The optical device is intended to be placed in a housing to form a light signal lamp for a vehicle. The optical device includes, along the longitudinal direction: an input portion receiving rays emitted by a light source; a middle portion having two lateral faces spaced from each other along a transverse direction; an output portion including an output face through which the rays which have propagated in the optical device are emitted. The output portion comprises at least one module having lateral faces which, when viewed in the elevation direction, have an ogive shape and which define a front ridge extending substantially in a plane parallel to a plane.