Wavelength Conversion Apparatus Brightness Enhancement via Angle Deflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional laser fluorescent projection systems face limitations in brightness due to the upper-limit light power of the light modulation device, leading to increased volume and cost when trying to achieve higher brightness, which hinders miniaturization and lightness in display devices.
Innovation Solution
A wavelength conversion apparatus with an angle deflection region and a wavelength conversion region is used to adjust the emergent direction of light and generate excited light, allowing for improved brightness without increasing the resolution of the light modulation device, by forming scanned images that are superimposed with modulated images to enhance display brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light modulation device is increased in size to reduce power density, then the brightness of the display image is improved, but the volume of the projection system increases
Solution Approach 1:
The invention segments the light modulation function by introducing a spatial light modulator that divides the projection system into multiple optical paths. This allows the use of a smaller light modulation device while maintaining brightness through multi-path light utilization.
Solution Approach 2:
The invention introduces a temporal dimension to the light modulation process by using sequential scanning of multiple deflection units. This allows a compact device to achieve the functionality of a larger device by operating in time-multiplexed mode across different spatial positions.
2Illumination intensity
If the light modulation device is increased in size to reduce power density, then the brightness of the display image is improved, but the manufacturing cost increases
Solution Approach 1:
The invention segments the light modulation function across multiple deflection units and optical paths, allowing the use of smaller, less expensive components while achieving the same overall brightness through coordinated operation of multiple segments.
Solution Approach 2:
The invention replaces the need for a large-scale mechanical light modulation device with a combination of optical deflection units and electronic control, reducing manufacturing complexity and cost while maintaining or improving brightness performance.
3Illumination intensity
If the resolution of the light modulation device is increased to improve display quality, then the brightness is improved, but the volume and cost of the projection system increase
Solution Approach 1:
The invention adds a temporal dimension to resolve the brightness-quality tradeoff by using time-multiplexed scanning across multiple deflection units. This allows standard-resolution devices to achieve high effective resolution and brightness through sequential operation rather than requiring high static resolution.
Solution Approach 2:
The invention segments the high-resolution display function across multiple deflection units operating in sequence, allowing each unit to have lower individual resolution while the combined system achieves high effective resolution and brightness through coordinated time-multiplexed operation.
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 approach significantly increases the brightness of the display device while maintaining a compact design and reducing manufacturing costs, achieving high-brightness and high-definition displays without the need for larger light modulation devices.
Implementation Method 1
The angle deflection region includes a plurality of deflection units, each of which includes a light-emitting surface for emitting a first light. A first included angle is formed between the light-emitting surface and a reference plane. First included angles formed between the reference plane and the light-emitting surfaces of at least two of the plurality of deflection units are not equal to each other.
Implementation Method 2
The wavelength conversion region is configured to convert a second light incident to the wavelength conversion region into an excited light and emit the excited light.
Data Source
AI summary
Provided are a wavelength conversion apparatus, a light source system including the same, and a display device including the light source system. The wavelength conversion apparatus includes an angle deflection region and a wavelength conversion region for converting incident second light into excited light and then emitting same. The angle deflection region includes deflection units, each of which includes a light emergent face for emitting first light. A first included angle is formed between the light emergent face and a reference plane. First included angles between light emergent faces of at least two deflection units and the reference plane are not equal. The deflection units are located on a light path of the first light in a time sequence, so as to change an emergent angle of the first light in the time sequence, such that the first light is successively scanned at a preset position to form virtual pixels.