Automotive Lamp Micro Lens Array for Low Beam Divergence
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Solution Overview
Problem
Micro lens arrays used in automobiles have a limited diffusion angle of light, restricting their application to only welcome light functions and preventing their use in other lighting functions like low beam due to a small divergence angle.
Innovation Solution
A lamp design incorporating a micro lens array module with a light-incident lens array and a light-emitting lens array, where the optical axes of the lenses are aligned or misaligned in specific sections to enhance light diffusion, allowing for a larger divergence angle and enabling the use in low beam functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a micro lens array is used in an automobile, then the welcome light function is achieved, but the diffusion angle of light is limited to about 15 degrees, preventing other lighting functions like low beam from being performed
Solution Approach 1:
The micro lens array is divided into multiple sections (first section with light-incident lenses and second section with light-emitting lenses). This segmentation allows different sections to perform different optical functions, enabling the system to achieve both concentrated welcome light effects and wide-angle low beam illumination through coordinated operation of the segmented sections.
Solution Approach 2:
A light guide plate is introduced as an intermediary component between the micro lens array and the light source. The light guide plate receives light from the light source and guides it to the micro lens array, enabling flexible control of light distribution and allowing the system to switch between different lighting functions by controlling which sections of the micro lens array are activated.
2Illumination intensity
If the micro lens array is designed with aligned optical axes, then light concentration is improved, but the beam width is limited and cannot cover a wide horizontal range
Solution Approach 1:
Different sections of the micro lens array are designed with different optical characteristics. The first section has optical axes aligned with the light source for concentrated luminous intensity, while the second section has optical axes oriented at angles to achieve wide horizontal coverage. This local differentiation of optical properties allows the system to simultaneously achieve both intensity concentration and wide coverage by activating appropriate sections for different lighting functions.
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 design significantly increases the light divergence angle, allowing the micro lens array to be used for low beam functions in automobiles by creating a wider beam pattern with high luminous intensity in the central region and covering a wide range horizontally, overcoming the limitations of existing micro lens arrays.
Implementation Method 1
a light-incident lens array to which the light is incident, and which includes a plurality of light-incident lenses; and a light-emitting lens array which is provided in front of the light-incident lens array, receives the light incident into the light-incident lens array to emit the light to the outside
Data Source
AI summary
Disclosed are a lamp for an automobile and an automobile. The lamp for an automobile includes a micro lens array (MLA) module which is provided in front of a light source and into which light is incident. The MLA module includes a light-incident lens array and a light-emitting lens array. At least a portion of optical axes of a plurality of light-incident lenses provided in a first section of the light-incident lens array is aligned with one of optical axes of a plurality of light-emitting lenses provided in an A section of the light-emitting lens array. At least a portion of optical axes of a plurality of light-incident lenses provided in a second section of the light-incident lens array is misaligned with all of the optical axes of a plurality of light-emitting lenses provided in a B section of the light-emitting lens array.