Single Lens Headlight Optical System for Sharpness and Light Efficiency
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Solution Overview
Problem
Conventional intelligent headlamps face challenges in achieving sharpness and reducing light interference due to astigmatism and the need for multiple optical elements, which complicates the design and reduces light usage.
Innovation Solution
A headlight optical system featuring a single lens with a second incident surface having an inclined focal plane that surrounds a horizontal first incident surface, improving image sharpness and light concentration by refracting and condensing light effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple optical elements are used to reduce astigmatism and improve sharpness, then image sharpness is improved, but device complexity increases and light usage is reduced
Solution Approach 1:
The patent combines multiple optical functions (correcting astigmatism, focusing light, and shaping the beam) into a single lens element. This single lens integrates the capabilities of what would traditionally require multiple separate optical components, thereby reducing system complexity while maintaining image sharpness and light efficiency.
Solution Approach 2:
The single lens is designed with segmented functional zones: a first incident surface for receiving light, a second incident surface with an inclined focal plane for correcting astigmatism, and an exit surface for projecting the focused image. This segmentation of functions within a single element allows complex optical correction without requiring multiple separate components.
2Manufacturing precision
If multiple optical elements are used to achieve sharp focus, then image sharpness is improved, but light usage efficiency deteriorates
Solution Approach 1:
By merging multiple optical corrections into a single lens, the patent minimizes the number of air-glass interfaces where light reflection and scattering occur. This reduces light loss and improves overall light usage efficiency while maintaining sharp focus through the integrated optical design.
3Area of stationary object
If the light emitting area is increased to provide broader illumination, then illumination coverage is improved, but image sharpness deteriorates due to astigmatism
Solution Approach 1:
The patent applies different optical properties to different regions of the single lens. The second incident surface features an inclined focal plane specifically designed to correct astigmatism in different areas of the light emitting surface, allowing each region to be optimized for its specific function while maintaining overall sharpness across the entire illuminated area.
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 solution enhances image sharpness and light usage, reducing blurring and interference, allowing for clearer luminous patterns and increased brightness without the need for additional optical elements, making it suitable for advanced driver assistance systems.
Implementation Method 1
After light emitted from a light source enters the refractive optical system after being retracted by the first incident surface or the second incident surface
Implementation Method 2
When the peripheral light enters into the optical system, the second incident surface refracts and condenses the light
Implementation Method 3
the light is refracted by the exit surface and emitted from the exit surface
Data Source
AI summary
A headlight optical system and a lamp using the same are provided. The headlight optical system is implemented with the refractive optical system of a single lens. The headlight optical system includes a first incident surface, a second incident surface, and an exit surface. The first incident surface is a horizontal plane. The second incident surface surrounds the first incident surface. The inner edge of the second incident surface is connected with the outer edge of the first incident surface. The second incident surface has an inclined angle with respect to the first incident surface. After the light emitted from the polycrystalline light source is incident on the first incident surface or the second incident surface, the refractive optical system refracts and emits the light from the exit surface.