Tilted Optical Units in Vehicle Lamp Modules
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Solution Overview
Problem
Existing vehicle lamps struggle to form an optimal beam pattern without projecting light in unintended directions, which can cause glare for other drivers.
Innovation Solution
A vehicle lamp configuration using multiple lamp modules, each comprising a light source unit, an optical path adjustment unit, and an optical unit. The optical unit is tilted to prevent light from being emitted in undesired directions, and apertures are formed within the overlapping area of incident and emission lenses to control light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light sources are arranged to provide wide illumination, then visibility is improved, but light may be projected above the cutoff line causing glare
Solution Approach 1:
The headlamp is divided into multiple lamp modules (first and second lamp modules) with separate light source units, optical path adjustment units, and optical units. Each module independently controls light distribution in specific regions, allowing precise management of illumination patterns to achieve wide coverage while preventing glare above the cutoff line.
Solution Approach 2:
Different optical path adjustment units are configured with specific tilt angles and orientations tailored to their respective positions. The first optical path adjustment unit tilts in a first direction while the second tilts in a second direction, creating locally optimized light distribution that collectively achieves wide illumination without glare.
2Object-affected harmful factors
If optical units are tilted to control light direction, then glare is reduced, but beam pattern uniformity may be compromised
Solution Approach 1:
The optical units are deliberately tilted asymmetrically at different angles and in different directions based on their positions within the headlamp assembly. This asymmetric configuration allows each optical unit to direct light away from the cutoff line in its specific region, collectively forming a uniform low beam pattern without glare while maintaining overall beam consistency.
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 effectively prevents light from being projected in unintended directions, reducing glare and ensuring a more optimal beam pattern for improved visibility and safety.
Implementation Method 1
an optical path adjustment unit that adjusts a path of the light emitted from the light source unit
Implementation Method 2
a reflective surface that reflects light incident on the second incident surface toward the emission part
Implementation Method 3
an optical unit that transmits at least some of the light emitted from the optical path adjustment unit to form the predetermined beam pattern
Data Source
AI summary
A vehicle lamp includes a plurality of lamp modules, and each of the plurality of lamp modules includes: a light source unit that includes at least one light source and generates light; an optical path adjustment unit that adjusts a path of the light emitted from the light source unit; and an optical unit that transmits at least some of the light emitted from the optical path adjustment unit to form a predetermined beam pattern. The optical unit is tilted in at least one direction such that a first side thereof is disposed further forward than a second side thereof.