Vehicle Lamp Lens Array With Movable Shield for Dynamic Beam Patterns
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Solution Overview
Problem
Existing vehicle lamps using micro lens arrays face issues with light uniformity and resolution when irradiating light to an inclined road surface, leading to non-uniform beam patterns and difficulty in implementing dynamic images.
Innovation Solution
A lamp design featuring a light source, a lens array with first and second micro lenses, and a movable shield part between the lenses to form specific beam patterns, which includes unit masks to enhance light uniformity and allow for dynamic image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the optical system is mounted to be inclined to irradiate light to the road surface, then the light can be directed to the road surface, but the size of the lamp increases as the range occupied by the optical system increases
Solution Approach 1:
The optical system is divided into a first lens part and a second lens part, with the shield part positioned between them. This segmentation allows the optical system to be compact while achieving the desired light inclination effect through the coordinated arrangement of multiple optical components rather than requiring a large single inclined system
Solution Approach 2:
The shield part is nested within the optical path between the first and second lens parts, utilizing the space already occupied by the optical system. This nested arrangement allows the shield to function as part of the compact optical assembly without increasing the overall lamp volume, enabling light inclination while maintaining a small form factor
2Adaptability or versatility
If a projection type optical system using a micro lens array is used, then specific information can be displayed on the road surface, but only one pattern with a static image can be implemented making it difficult to implement dynamic images
Solution Approach 1:
The shield part is designed to be movable rather than fixed, allowing it to dynamically adjust its position and orientation. This enables the optical system to switch between different beam patterns and create dynamic images on the road surface, transforming a static projection system into a dynamic one capable of displaying various information patterns
Solution Approach 2:
By changing the position and orientation parameters of the movable shield part, the system can vary the beam pattern characteristics. This parameter adjustment capability allows a single optical system to implement multiple patterns and dynamic images, providing versatility without requiring multiple fixed optical systems
3Illumination intensity
If light is irradiated to the road surface to be inclined, then the beam pattern can be formed on the road surface, but the amount of light is degraded and the uniformity of the pattern is difficult to secure
Solution Approach 1:
The shield part selectively blocks specific portions of the light beam while allowing other portions to pass through. This local control of light transmission enables the formation of the desired beam pattern on the inclined road surface while minimizing unnecessary light blockage, thereby reducing overall light loss and improving pattern uniformity
Solution Approach 2:
The shield part acts as an intermediary element between the first and second lens parts, mediating the light beam to achieve the desired inclination and pattern formation. By strategically positioning the shield, the system can direct light efficiently onto the inclined road surface while maintaining uniformity and minimizing energy loss
4Adaptability or versatility
If the shield part is provided to be movable to convert a lamp image, then dynamic image projection is enabled, but the device complexity increases
Solution Approach 1:
The movable shield part serves multiple functions: it controls beam pattern formation, enables dynamic image projection, and adjusts light distribution. By making this single component multi-functional, the patent avoids adding separate mechanisms for each function, thereby limiting the increase in device complexity while achieving dynamic imaging capability
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 enhances light uniformity and visibility by minimizing light loss and reducing the size of the lamp, while enabling dynamic image projection and improved optical performance.
Implementation Method 1
a lens array provided on a front side of the light source part, the lens array includes a first lens part including a plurality of first micro lenses, to which the light is input from the light source part, a second lens part including a plurality of second micro lenses that outputs the light input from the first lens part
Data Source
AI summary
Disclosed is a lamp for a vehicle. The lamp for a vehicle includes a light source part that generates and outputs light, and a lens array provided on a front side of the light source part, the lens array includes a first lens part including a plurality of first micro lenses, to which the light is input from the light source part, a second lens part including a plurality of second micro lenses that outputs the light input from the first lens part, and a shield part located between the first lens part and the second lens part, and that shields a portion of the light input from the first lens part to the second lens part to form a specific beam pattern on a road surface, and the shield part is provided to be movable to change a lamp image of the beam pattern formed on the road surface.