Vehicle Lamp Projection Optics for Wide-Area Lighting
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Solution Overview
Problem
Conventional vehicle lighting systems require numerous LEDs to achieve wide-area lighting, leading to increased manufacturing costs and vehicle volume.
Innovation Solution
A lighting apparatus for vehicles utilizing a projection optical system, which includes a lamp housing, a projection optical system, an outer lens, and reflection parts to direct light onto a lighting-up surface, reducing the need for multiple LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If numerous LEDs are used to achieve wide-area lighting, then the lighting coverage area is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent merges multiple LED light sources into a single projection optical system that projects light patterns onto a reflection part. This consolidation achieves wide-area lighting coverage while reducing the number of individual LED components from multiple discrete LEDs to one integrated projection system, thereby resolving the contradiction between lighting coverage and device complexity
Solution Approach 2:
The patent introduces a reflection part as an intermediary element that receives projected light from the projection optical system and redirects it to illuminate the target area. This intermediary mechanism enables wide-area lighting coverage while using fewer LEDs, as the reflection part amplifies and distributes the light from the projection system across the desired area
2Area of stationary object
If numerous LEDs are used to achieve wide-area lighting, then the lighting coverage area is improved, but the manufacturing cost increases
Solution Approach 1:
The patent consolidates multiple LED components into a single projection optical system with a reflection part, reducing the total number of parts that need to be manufactured and assembled. This merging approach lowers manufacturing costs while maintaining wide-area lighting coverage, as fewer individual components require production, inventory management, and assembly operations
3Device complexity
If a projection optical system is used instead of multiple LEDs, then the device complexity is reduced, but the lighting intensity distribution may be affected
Solution Approach 1:
The reflection part serves as an intermediary that receives the projected light pattern and redistributes it across the target area. This intermediary mechanism ensures that the lighting intensity distribution remains uniform and appropriate across the wide coverage area, compensating for any intensity variations that might occur in the projection process while maintaining reduced device complexity
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 reduces manufacturing costs and power consumption while enhancing design flexibility and adding value to head and rear lamps by enabling wider lighting areas and various lighting patterns.
Implementation Method 1
a projection optical system disposed within the lamp housing part and radiating light
Implementation Method 2
a reflection part disposed in a light path of the light radiated by the projection optical system and configured to reflect, toward a lighting-up surface of the vehicle, the light radiated by the projection optical system
Data Source
AI summary
A lighting apparatus for a vehicle may include a lamp housing part mounted on a vehicle body, a projection optical system disposed within the lamp housing part and configured to radiate light, and a reflection part rotatably disposed in a light path of the light radiated by the projection optical system and configured to reflect, toward a lighting-up surface of the vehicle, the light radiated by the projection optical system.