Head Lamp Optical Module Segmentation for Slim Design
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Solution Overview
Problem
Conventional head lamp designs face limitations in reducing the size and weight of optical modules due to the use of aspheric lenses with short focus, which increases the thickness and weight when trying to achieve a slim image, and the existing technologies fail to effectively manage light distribution patterns for both long-distance and short-distance illuminance and turning visibility.
Innovation Solution
The optical module incorporates a first light source unit and a first reflection unit to concentrate light at a focal point, with a hot zone lens unit forming a light distribution pattern parallel to both horizontal and vertical directions, and a wide zone lens unit forming a pattern spread in the horizontal direction, allowing for integration and reduced height, weight, and size, while maintaining optimal light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an aspheric lens with short focus is used to form a light distribution pattern, then the light distribution capability is improved, but the thickness and weight of the lens increase
Solution Approach 1:
The patent divides the single aspheric lens into multiple separate optical elements (reflector, shield unit, and lens assembly). By segmenting the optical system, each component can be optimized independently, allowing the lens to have reduced thickness while maintaining light distribution capability through the coordinated action of multiple elements.
Solution Approach 2:
The patent transitions from a single thick lens solution to a multi-element spatial arrangement that distributes optical functions across different dimensions and positions. The reflector, shield unit, and lens are positioned at different spatial locations to achieve the desired light distribution without requiring increased lens thickness.
2Illumination intensity
If the diameter of the aspheric lens is increased to achieve a slim image, then the optical performance is improved, but the size and weight of the optical module increase
Solution Approach 1:
By dividing the optical system into multiple components (reflector, shield unit, lens), the patent achieves optimized optical performance without requiring a single large-diameter lens. Each segment contributes to the overall optical function, allowing compact module dimensions.
Solution Approach 2:
The patent designs a multi-functional optical system where the reflector, shield unit, and lens work together to perform multiple optical functions (light collection, direction control, and distribution) that would otherwise require separate large optical elements, thereby reducing the overall module size.
3Illumination intensity
If multiple separate optical components are used to manage light distribution, then the light distribution control is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple optical functions (reflection, shielding, and lensing) into an integrated optical module where components work synergistically. The reflector, shield unit, and lens are positioned and designed to collectively achieve superior light distribution control while managing system complexity through functional integration.
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 reduces the number of parts, minimizes the size and weight of the optical module, enhances long-distance performance, short-distance illuminance, and turning visibility, and allows for a slim image design by integrating the hot and wide zone lens units, improving light distribution and visibility.
Implementation Method 1
a first reflection unit configured to concentrate, at a first focal point, light radiated from the first light source unit
Implementation Method 2
a second reflection unit configured to concentrate, at a plurality of second focal points, pieces of light radiated from the plurality of second light source units
Implementation Method 3
a hot zone lens unit positioned on an output side of the first shield unit and configured to form a light distribution pattern parallel to a horizontal direction and a vertical direction, by transmitting light radiated from the first shield unit
Implementation Method 4
a wide zone lens unit positioned on an output side of the second shield unit and configured to form a light distribution pattern spread in the horizontal direction, by transmitting light radiated from the second shield unit
Data Source
AI summary
An optical module of a head lamp including a first light source unit, a first reflection unit configured to concentrate, at a first focal point, light radiated from the first light source unit, a first shield unit positioned in the first focal point, second light source units, a second reflection unit configured to concentrate, at second focal points, light radiated from the second light source units, a second shield unit positioned in the second focal points, a hot zone lens unit positioned on the output side of the first shield unit and configured to form a light distribution pattern parallel to horizontal and vertical directions, by transmitting light radiated from the first shield unit, and a wide zone lens unit positioned on the output side of the second shield unit and configured to form a light distribution pattern spread in the horizontal direction, by transmitting light radiated from the second shield unit.