PBS Vehicle Lamp System Light Energy Utilization
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Solution Overview
Problem
Conventional vehicle lamp systems using a Polarization Beam Splitter (PBS) result in significant light energy loss as the P wave is typically absorbed, rather than utilized, which limits the overall illumination efficiency.
Innovation Solution
A vehicle lamp system incorporating a PBS, an LCOS control chip, a collimating lens set, an imaging lens set, and a light path control unit, where the LCOS control chip dynamically modulates the S wave to change its vibration direction, allowing it to pass through the PBS, and the P wave is utilized for low beam illumination through a light path control unit, comprising a mirror, light shield, and magnifying glass, thereby enhancing light energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the P wave is absorbed by black material to avoid affecting imaging quality, then the imaging quality is maintained, but the light energy utilization is significantly reduced
Solution Approach 1:
The patent segments the light path into two separate channels: the S wave path for high beam illumination and the P wave path for low beam illumination. By dividing the originally single light path into multiple independent paths, the system can utilize both polarization components (S wave and P wave) for different illumination functions, thereby improving light energy utilization without compromising imaging quality.
Solution Approach 2:
The patent makes the light path control unit multi-functional by enabling it to control both the S wave (for high beam) and P wave (for low beam) through a single PBS device. This multi-functionality allows the system to achieve both high beam and low beam illumination capabilities while maintaining good imaging quality, resolving the contradiction between energy utilization and image quality.
2Adaptability or versatility
If the S wave is modulated by LCOS control chip to change vibration direction, then intelligent high beam illumination is achieved, but the system complexity increases
Solution Approach 1:
The patent introduces a PBS (Polarization Beam Splitter) as an intermediary device that separates the S wave and P wave light paths. This intermediary enables the LCOS control chip to modulate only the S wave for intelligent high beam illumination while the P wave follows a separate path, achieving adaptability without requiring the LCOS chip to handle both polarization components, thus managing system complexity effectively.
3Loss of energy
If a single light path is used for both high beam and low beam illumination, then the device structure is simplified, but the light energy utilization is reduced
Solution Approach 1:
The patent segments the light path using a PBS device to create separate channels for S wave (high beam) and P wave (low beam) illumination. This segmentation allows both polarization components to be utilized effectively, improving light energy utilization while maintaining a relatively compact and integrated device structure through the use of beam splitting rather than completely separate systems.
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 configuration enables intelligent high beam illumination and improved light energy utilization by converting the S wave to P wave and using the P wave for low beam illumination, significantly increasing the overall light source efficiency.
Implementation Method 1
the PBS, a collimating lens set, an imaging lens set, an LCOS (Liquid Crystal on Silicon) control chip and a light path control unit, wherein: the collimating lens set and the PBS are successively arranged along a light emission direction of the light source
Implementation Method 2
Through modulation of the LCOS control chip 4, control of the image is realized. Because the vibration direction of the S wave after modulating changes, the S wave can be directly transmitted through the contact surface of the PBS
Data Source
AI summary
A vehicle lamp system based on a PBS (Polarization Beam Splitter) is provided, including a light source, the PBS, a collimating lens set, an imaging lens set, an LCOS (Liquid Crystal on Silicon) control chip and a light path control unit. The collimating lens set and the PBS are successively arranged along a light emission direction of the light source. The LCOS control chip is arranged at a light path of an S wave reflected by a contact surface of the PBS. The imaging lens set is arranged at an emergent light path of the S wave after being modulated by the LCOS control chip and transmitted through the contact surface of the PBS. The light path control unit is arranged at a light path of a P wave transmitted through the contact surface of the PBS. Through the light path control unit, utilization of a light energy is improved.