Vehicle Lamp Optical Axis Adjustment for Glare-Free Fault Diagnosis
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Solution Overview
Problem
Vehicle lamp systems face challenges in performing fault diagnosis with high beams without causing glare to drivers or pedestrians, as high beams can illuminate them excessively.
Innovation Solution
A vehicle lamp system with a leveling unit that adjusts the optical axis of the lamp unit downward and a control unit that manages the lamp's on/off states, allowing the high-beam lamp to turn on for a predetermined period at a lower intensity, reducing glare by altering the light distribution pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the high beam is activated for fault diagnosis, then the lamp unit can be tested, but glare is caused to drivers or pedestrians
Solution Approach 1:
The patent applies the dynamics principle by making the optical axis adjustable through a leveling unit. During fault diagnosis, the optical axis is dynamically tilted downward at a predetermined angle, allowing the high beam to illuminate without causing glare to drivers or pedestrians. This dynamic adjustment enables the system to adapt its light distribution based on the operational mode (normal operation vs. fault diagnosis).
Solution Approach 2:
The patent changes the orientation parameter of the optical axis to resolve the contradiction. By tilting the optical axis downward at a predetermined angle during fault diagnosis mode, the light distribution pattern is modified to direct illumination away from the horizontal line, thereby preventing glare while maintaining the high beam's diagnostic functionality.
2Reliability
If the high beam illuminates at full intensity for fault diagnosis, then the lamp unit can be tested, but waiting time for drivers is increased
Solution Approach 1:
The patent applies preliminary action by performing fault diagnosis immediately when the engine is started, before the driver needs to operate the vehicle. The control unit automatically activates the high beam in fault diagnosis mode at engine start, completing the diagnostic test before normal operation begins, thereby eliminating unnecessary waiting time for the driver.
3Object-affected harmful factors
If the optical axis is adjusted downward for fault diagnosis, then glare is suppressed, but the light distribution pattern changes from normal operation
Solution Approach 1:
The patent uses dynamic optical axis adjustment to resolve this contradiction. The leveling unit enables the optical axis to be tilted downward during fault diagnosis mode to suppress glare, while automatically returning to the normal horizontal orientation during regular operation. This dynamic switching between two distinct optical configurations allows the system to maintain adaptability for different operational requirements.
Data Source
AI summary
A vehicle lamp system includes a high-beam lamp unit that can form a high-beam light-distribution pattern, a leveling mechanism that vertically adjusts an optical axis of the high-beam lamp unit, and a control unit that controls on/off of the high-beam lamp unit and controls the leveling mechanism. Upon the engine being started, the control unit controls the high-beam lamp unit to turn on for a predetermined period of time in a state in which the leveling unit adjusts the optical axis of the lamp unit to aim more vertically downward than in normal operation.