Motor Vehicle Light Uniformity via Intermediate Lenticular Diffuser
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rear vehicle lights with LEDs exhibit uneven light intensity distribution due to the short distance between the inner surface of the front lenticular half-shell and the LED light sources, affecting the perceived quality and image of the vehicle.
Innovation Solution
Incorporation of an intermediate sheet-shaped lenticular body with a cylindrical-optics flat lens and surface features like recesses or crests to diffuse and redirect light uniformly, ensuring even light distribution across the transparent or semitransparent portions of the front lenticular half-shell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If light emitting diodes are used as light sources, then lighting efficiency and lifespan are improved, but light intensity distribution uniformity deteriorates
Solution Approach 1:
A diffuser element is introduced as an intermediary component between the LED light source and the front lenticular half-shell. This diffuser scatters the concentrated LED light output, transforming the point-like high intensity source into a more distributed illumination pattern that achieves uniform light intensity across the transparent portions of the front lenticular half-shell while preserving the high efficiency and long lifespan benefits of LED technology.
2Length of moving object
If the distance between the front lenticular half-shell and LED light sources is reduced, then the light depth is reduced and positioning is simplified, but light intensity distribution uniformity deteriorates
Solution Approach 1:
The diffuser element serves as a mediating component that enables the maintenance of short distance between the front lenticular half-shell and LED light sources while achieving uniform light distribution. By placing the diffuser between these components, the system can operate with reduced light depth for simplified positioning, yet the diffuser ensures that the concentrated light from the close-proximity LEDs is scattered to produce even illumination across the transparent portions.
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 solution achieves a consistent and even light intensity distribution across the rear light surface, enhancing the perceived quality and image of the vehicle without increasing production costs.
Implementation Method 1
an essentially sheet-shaped intermediate lenticular body 10 made of a transparent or semitransparent material and arranged to close mouth 3a of the cup-shaped body 3, underneath the lenticular half-shell 5, so as to be crossed first by the light emitted by the light source 4
Implementation Method 2
the front face 10a of the intermediate lenticular body 10 is provided with plenty of recesses or blind holes preferably, though not necessarily, with a lenticular profile
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A motor-vehicle light (1) comprising a rigid rear shell (2) and, within said rigid rear shell (2), at least one cup-shaped body (3) having its mouth (3a) facing the mouth (2a) of the rigid rear shell (2), and at least one LED light source (4) which is located close to the bottom of said cup-shaped body (3) and is structured so as to emit light when electricity powered; the motor-vehicle light (1) further comprising an essentially sheet-shaped intermediate lenticular body (10) which is made of either transparent or semitransparent material, and is arranged to close the mouth (3a) of the cup-shaped body (3) so as to be crossed by the light emitted by the LED light source (4); the rear face (10b) of said intermediate lenticular body (10) being provided with a plenty of crests or rectilinear grooves (11) having a substantially cylindrical transversal profile, which are distributed on the surface of the lenticular body (10) so as to be parallel and adjacent to one another, in order to form a cylindrical-optics flat lens (11a) that extends, substantially without interruption, along the portion of the intermediate lenticular body (10) that is crossed by the light coming out from the mouth (3a) of the cup-shaped body (3).