Vehicle Lamp Micro Lens Array Focal Distance Optimization
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Solution Overview
Problem
Vehicle lamps, particularly headlamps, face challenges in achieving sufficient light efficiency and distribution performance due to light loss when light passes through lenses, necessitating a method to reduce this loss while maintaining a simple configuration.
Innovation Solution
A vehicle lamp design featuring micro incident lenses and micro exit lenses with adjustable focal distances, where the focal distance of the micro exit lens is 40% to 80% of the micro incident lens, and a shielding portion to obstruct light, ensuring optimal light distribution by adjusting the focal point position between the lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a micro lens with short focal distance is used to reduce lamp size, then the device size is reduced, but light efficiency deteriorates due to increased light loss
Solution Approach 1:
The patent divides the optical system into multiple micro lenses (incident lenses and exit lenses) arranged in arrays. Each micro lens processes a portion of the light, and by segmenting the light path into multiple controlled stages, the system achieves compact size while managing light efficiency through distributed optical processing rather than a single large lens
Solution Approach 2:
The patent implements a nested optical structure where exit lenses are positioned within or adjacent to the focal regions of incident lenses. The micro exit lenses are nested within the optical path defined by the micro incident lenses, creating a compact multi-stage optical system that reduces overall lamp size while maintaining light efficiency through controlled light propagation through multiple nested optical elements
2Loss of energy
If multiple components are added to improve light distribution performance, then light efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the functions of multiple optical elements into an integrated lens array structure. The incident lenses and exit lenses are combined into a unified optical assembly where light passes through multiple micro lenses in sequence. This merging approach achieves improved light distribution and efficiency without requiring separate adjustment mechanisms or additional independent components, thereby avoiding increased device complexity
Solution Approach 2:
The micro lens arrays serve multiple functions simultaneously: they focus light, distribute light across the beam pattern, and control light direction. The same lens structures that reduce lamp size also manage light efficiency and distribution. This multi-functionality eliminates the need for separate dedicated components for each function, maintaining simple configuration while achieving multiple performance goals
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 design enhances light efficiency and distribution performance without additional components, simplifying the configuration and reducing costs, ensuring adequate visibility and compliance with light distribution requirements.
Implementation Method 1
a first lens portion with a plurality of micro incident lenses onto which light generated by the light source portion is incident
Implementation Method 2
a second lens portion with a plurality of micro exit lenses that correspond to the plurality of micro incident lenses, respectively
Data Source
AI summary
Provided is a lamp for a vehicle capable of ensuring light efficiency to satisfy the performance requirements for light distribution. The lamp includes a light source portion, a first lens portion with a plurality of micro incident lenses onto which light generated by the light source portion is incident, a second lens portion with a plurality of micro exit lenses corresponding to the plurality of micro incident lenses, respectively, and a shielding portion with a plurality of shields that are disposed on rear focal points of the plurality of micro exit lenses to obstruct a portion of incident light. In particular, a focal distance of a micro exit lens among the plurality of micro exit lenses is shorter than a focal distance of a micro incident lens among the plurality of micro incident lenses, which corresponds to the micro exit lens.