Headlamp Capture System with Variable Field of View
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing headlamps with dynamic brightness regulation mechanisms are prone to interference from light echoes, especially in situations requiring narrow or wide beams, limiting their versatility across various applications, including sports and industrial use.
Innovation Solution
A headlamp design featuring a capture system with a single sensor and an electrically controllable optical system, allowing for servo-control of the angle of capture and generation of control signals to adjust the light beam geometry, combined with a control unit that selects the appropriate sensor based on predetermined profiles for optimal light beam adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dynamic brightness regulation mechanism is implemented using a light sensor, then automatic adaptation to environment is achieved, but light echoes and interference occur that disturb the regulation
Solution Approach 1:
The patent applies dynamics by making the sensor's field of view adjustable rather than fixed. The sensor can dynamically change its capture angle to match the current beam configuration (wide or narrow), allowing the system to adapt its sensing characteristics to different operating modes and avoid interference from light echoes while maintaining reliable automatic regulation.
Solution Approach 2:
The patent changes the parameter of the sensor's field of view angle based on the operating conditions. When the beam is configured narrowly for distant vision, the sensor adopts a narrow field of view; when the beam is wide for close vision, the sensor adopts a wide field of view. This parameter adaptation resolves the contradiction by making the regulation system reliable across different scenarios.
2Adaptability or versatility
If multiple LEDs with distinct beams are arranged, then flexibility for different vision distances is improved, but complexity of the lamp structure increases
Solution Approach 1:
The patent merges the control of multiple LEDs into a unified system where a single control unit manages both the LED configuration (wide or narrow beam) and the sensor field of view. This integration maintains flexibility for different vision distances while reducing overall system complexity by coordinating components rather than operating them independently.
Solution Approach 2:
The control unit serves multiple functions: it controls the LED current to produce different beam geometries, it receives signals from the light sensor, and it adjusts the sensor's field of view accordingly. This multi-functionality maintains versatility while managing structural complexity through a centralized control architecture.
3Ease of manufacture
If a fixed field of view sensor is used, then the regulation mechanism is simple to implement, but it cannot adapt to different beam geometries (wide or narrow)
Solution Approach 1:
The sensor's field of view is made dynamic rather than fixed, allowing it to adjust its capture angle according to the active beam geometry. This dynamic capability enables the system to adapt to both wide and narrow beams while maintaining a relatively simple implementation through electronic control of the sensor orientation or focal length.
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 minimizes light interference and enhances the dynamic regulation mechanism's flexibility, enabling effective use in multiple sectors by adapting to different light beam types and environments, providing improved comfort and reduced luminosity variations.
Implementation Method 1
Each LED is equipped with its own focal optical system
Implementation Method 2
a sensor of the light reflected by an object illuminated by the lamp for regulating the light intensity
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A lamp comprising: - a light source (300) including one or more LED diodes; - means (100, 110, 230) for controlling the brightness and/or geometry of the light beam from the light source in response to a control signal or information; - a capture system associated with an optical system for generating an electrical signal representing the light intensity reflected from the area illuminated by the light beam onto an illuminated object; - a control unit (230) for generating the control signal or information from the information generated by the capture system. The lamp is characterized in that the capture system includes a focal system with a variable field controlled by the control unit.Preferably, the capture system includes at least two sensors with fixed focal lengths or, alternatively, a single sensor may be combined with an electrically controllable single focal length system.