Vehicle Headlamp Aperture Layout for Multi-Mode Beam Control
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Solution Overview
Problem
Existing vehicle headlights lack a simple structure that can deliver light in different wavelengths, polarization, and lighting angles, while also providing both low and high beam functionality.
Innovation Solution
A vehicle headlight design featuring a single-piece circuit board with three groups of light sources, where the light cones are 'cut off' by aperture openings to achieve distinct lighting modes, eliminating the need for optical elements and reflectors, and utilizing LEDs with two aperture openings for low and high beam functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple optical elements and reflectors are used to achieve different lighting modes, then lighting functionality is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple lighting functions (low beam, high beam, invisible wavelength light) into a single headlight unit with a unified housing and circuit board, eliminating the need for separate optical elements and reflectors for each function. The diaphragm with multiple openings serves all lighting modes simultaneously.
Solution Approach 2:
The headlight is designed as a multi-functional device that can emit visible light in low beam mode, visible light in high beam mode, and invisible wavelength light, all from a single unit. The diaphragm structure universally controls all light types through its multiple openings without requiring function-specific optical components.
2Manufacturing precision
If separate optical components are used for different light sources, then light control precision is improved, but manufacturing complexity increases
Solution Approach 1:
The diaphragm is segmented into multiple openings, with each opening assigned to specific light sources (first and second groups for low beam, third group for high beam). This segmentation allows precise control of each light type while maintaining a simple, single-piece diaphragm structure that is easy to manufacture.
Solution Approach 2:
The diaphragm acts as an intermediary element between the light sources and the external environment. It provides precise light control through its strategically positioned openings without requiring complex optical components, simplifying the manufacturing process while maintaining control precision.
3Adaptability or versatility
If multiple separate headlight units are used for different wavelengths and beams, then lighting versatility is improved, but device complexity increases
Solution Approach 1:
The patent merges three groups of light sources emitting different types of light (visible low beam, visible high beam, invisible wavelength) into a single headlight unit. The unified housing contains all light sources and the diaphragm, eliminating the need for multiple separate headlight units.
Solution Approach 2:
The headlight unit is designed to perform multiple lighting functions simultaneously - emitting visible light in low beam mode, visible light in high beam mode, and invisible wavelength light - all from a single multi-functional device, reducing the total component count.
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 simplifies the structure, reduces component count, and allows for efficient delivery of light in various wavelengths, including visible and invisible ranges, enhancing functionality without additional optical components.
Implementation Method 1
three groups of light sources arranged on the circuit board, each group having at least one light source... whose light passes through the first diaphragm opening and exits, a second diaphragm opening being assigned to the at least one light source of the third group, whose light passes through the second aperture and exits
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The headlight (10) for a vehicle is provided with a housing (12) having a front (16) for selectively emitting different types of light, a circuit board (20), and three groups of light sources (24, 26, 28) arranged on the circuit board (20). A first and a second group of light sources (24, 26) are arranged in a first region of the circuit board (20), and a third group of light sources (28) is arranged in a second region of the circuit board (20) adjacent to the first region. An aperture (30) within the housing (12) has two aperture openings (38, 40). A first aperture opening (38) is assigned to at least one light source (24, 26) each from the first and second groups, the light from which passes through and exits the first aperture opening (38).A second aperture (40) is assigned to the at least one light source (28) of the third group, whose light passes through and exits the second aperture (40). A light-blocking wall (36) divides the space of the housing (12) between the circuit board (20) and the aperture (30) into a first sub-space, in which the at least one light source (24, 26) of the first and second groups, as well as the first aperture (38), are arranged, and into a second sub-space, in which the at least one light source (28) of the third group and the second aperture (40) are arranged.