Vehicle Lamp With Segmented Optical Paths
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Solution Overview
Problem
Conventional vehicle lamps that implement multiple functions, such as daytime running lights and turn signals, are limited in their ability to combine different optical mechanisms due to shared optical paths, restricting design flexibility and product value.
Innovation Solution
A vehicle lamp design that incorporates a first light source, a light concentrating unit, and a second light source with a light guide part integrated into the output lens, allowing for distinct light distribution patterns and enhanced design differentiation by guiding the second light along the extension direction of the output lens, which can be slim, and using reflective layers to reflect the second light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple functions are implemented through the same optical path by disposing light sources of different colors while sharing a light guide or disposing a light source that performs different functions on a rear side of one projection lens, then the device complexity is reduced, but the adaptability or versatility is limited
Solution Approach 1:
The optical system is segmented into distinct optical paths: a first optical path for headlamp functions (low beam/high beam) and a second optical path for auxiliary functions (DRL, turn signal). This is achieved by providing separate light sources (first and second light sources) and separate projection lenses (first projection lens and second projection lens), allowing each path to be optimized independently while maintaining overall system integration.
2Length of moving object
If a slim output lens part is used, then the lamp design becomes more compact and modern, but the ability to implement multiple optical functions is reduced
Solution Approach 1:
The patent transitions from a single optical path design to a multi-dimensional optical architecture by introducing multiple light sources and multiple projection lenses arranged in different spatial positions. This allows the slim output lens to handle multiple functions simultaneously through different optical paths, effectively adding dimensional complexity to compensate for reduced thickness.
3Device complexity
If conventional optical paths are used for forming different light distribution patterns, then the design is simpler, but the product value and design differentiation are reduced
Solution Approach 1:
Different regions of the optical system are assigned different functional qualities: the first light source and first projection lens are optimized for headlamp light distribution patterns (low beam/high beam), while the second light source and second projection lens are optimized for auxiliary functions (DRL, turn signal). This local optimization enables design differentiation while maintaining overall system simplicity.
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
Enables the implementation of multiple optical functions with a slim output lens, enhancing product value through differentiated lighting images and improved optical quality by forming distinct optical paths and reducing glare.
Implementation Method 1
the light guide part may guide the second light such that the second light travels along an extension direction of the output lens part by reflecting the second light irradiated from the second light source part
Implementation Method 2
a light concentrating unit that concentrates the light emitted from the first light source part
Implementation Method 3
an output unit including an output lens part that outputs the light input from the light concentrating unit
Data Source
AI summary
A lamp for a vehicle including a first light source part that irradiates a first light for forming a first light distribution pattern, a light concentrating unit that concentrates the light emitted from the first light source part, an output unit including an output lens part that outputs the light input from the light concentrating unit, and a second light source part provided on one side of the output lens part in a leftward/rightward direction, and that irradiates a second light for forming a second light distribution pattern that is different from the first light distribution pattern, and the output unit further includes a light guide part formed in the output lens part, and that guides the second light input from the second light source part to the output lens part.