Vehicle LED Lamp Reflectors for Aspherical Lens Aberration
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Solution Overview
Problem
The use of LED arrays in vehicle lamps with aspherical lenses often results in aberration and light blurring due to the deviation of light emitted from LEDs positioned far from the focal point of the lens, leading to a distortion of the beam pattern.
Innovation Solution
The installation of reflectors with varying heights and widths on LEDs, positioned farther away from the optical axis, to redirect light closer to the center of the aspherical lens, reducing aberration and preventing light blurring by ensuring uniform light routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If LEDs are positioned farther away from the focal point of the aspherical lens, then the LED array can be compactly arranged, but light aberration and blurring occur
Solution Approach 1:
The invention divides the single LED array into multiple LED arrays, each with its own reflector and aspherical lens. By segmenting the lighting system, each LED array can be positioned closer to its dedicated lens focal point, maintaining light quality while achieving compact overall arrangement through modular configuration
Solution Approach 2:
Reflectors are introduced as intermediary components between LEDs and aspherical lenses. The reflectors redirect light from LEDs positioned away from the focal point toward the lens, enabling compact LED array arrangement while maintaining proper light routing to prevent aberration and blurring
2Device complexity
If a single aspherical lens is used for the entire LED array, then the structure is simple, but light from LEDs far from the focal point deviates and causes aberration
Solution Approach 1:
The single aspherical lens is divided into multiple aspherical lenses, each corresponding to a specific LED array. This segmentation allows each lens to focus light from its associated LEDs accurately, preventing aberration while maintaining relatively simple individual lens structures
Solution Approach 2:
Each aspherical lens is optimized for its specific position and associated LEDs, with reflectors tailored to local geometric requirements. This local optimization ensures accurate beam patterns for each segment while the overall system maintains manageable complexity through modular design
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 minimizes aberration and light blurring by shortening the distance between the illumination position and the center of the aspherical lens, resulting in a clearer and more focused beam pattern.
Implementation Method 1
reflectors disposed on the plurality of LEDs so as to reflect light emitted from the LEDs to the aspherical lens
Data Source
AI summary
A lamp for a vehicle is provided. The lamp includes an LED array in which a plurality of LEDs is aligned at the same position based on an illumination direction, an aspherical lens which is disposed in front of the LED array, and a plurality of reflectors on the plurality of LEDs so as to reflect light emitted from the LEDs to the aspherical lens, in which a distance from a rear end to a front end of the reflector based on the illumination direction becomes greater as the reflector is disposed farther away from an optical axis that passes through a focal point of the aspherical lens, and the lamp reduces an aberration so as to prevent a light blurring phenomenon.