Projection Device Light Collection via Polarization and Reflection
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Solution Overview
Problem
Existing projection devices face challenges in collecting sufficient light in a limited space, leading to reduced image quality due to environmental lighting and distance-related decay, which complicates the arrangement of light sources and increases implementation complexity.
Innovation Solution
A projection device design featuring a light splitter module and a light source module with first and second light sources, a reflection module, and a polarization module, where the light sources are disposed along perpendicular axes, allowing for the emission and reflection of light beams with specific polarization directions to enhance light collection without requiring precise alignment along the third axis, simplifying the design and increasing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple light sources are arranged along the third axis X corresponding to the second reflection mirror and transparent glass of the transparent reflection module, then more light can be collected into the light splitter module, but the design complexity and implementation difficulty increase significantly
Solution Approach 1:
The patent transitions from arranging light sources along the third axis X (corresponding to reflection mirrors and transparent glasses) to arranging them along the first axis Y (perpendicular to the transparent reflection module). This dimensional change eliminates the need for precise X-coordinate alignment while maintaining effective light collection, thereby reducing design complexity without sacrificing light gathering capability.
2Ease of manufacture
If light sources are arranged along the first axis Y perpendicular to the transparent reflection module, then the design and implementation are simplified, but the light collection efficiency may be reduced
Solution Approach 1:
The patent introduces a polarization module as an intermediary component between the light sources and the transparent reflection module. This module uses polarization filtering to ensure that light from sources arranged along the first axis Y is properly oriented for reflection, thereby maintaining high light collection efficiency while allowing the simplified perpendicular arrangement of light sources.
3Device complexity
If the projection device uses a weaker light source, then the device complexity is reduced, but the image quality deteriorates due to environmental lighting and distance-related decay
Solution Approach 1:
The patent merges multiple light sources along the first axis Y into a unified lighting system, combining their output through the polarization module and transparent reflection module. This consolidation achieves high illumination intensity equivalent to stronger individual sources while maintaining manageable device complexity through systematic arrangement and shared optical components.
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 effectively directs more light into the light splitter module, improving the strength of the projected image while simplifying the arrangement of light sources, thus addressing the challenges of image quality and complexity in limited spaces.
Implementation Method 1
The first reflection module comprises at least one reflection mirror. The first reflection module is disposed corresponding to the first light source along the first axis. The first reflection module is configured to reflect the first light beam to a second axis.
Implementation Method 2
The first polarization module comprises at least one polarizer, and the first polarization module is disposed corresponding to the second light source along the first axis and corresponding to the first reflection module along the second axis. The first polarization module is configured to direct the first light beam to pass through the first polarization module along the second axis and reflect the second light beam to the second axis
Data Source
AI summary
A projection device includes a light source module and a light splitter module. The light source module includes a first light source, a second light source, a reflection module and a polarizing module. The first light source emits a first light beam with a first polarization direction. The second light source emits a second light beam with a second polarization direction. The reflection module is disposed corresponding to the first light source along the first axis, and is used to reflect the first light beam to a second axis. The polarization module is disposed corresponding to the second light source along the first axis and corresponding to the reflection module along the second axis. The polarization module is used to direct the first light beam to pass through the polarization module along the second axis and reflect the second light beam to the second axis through the light splitter module.