Projection System Refractive Index Matching Liquid Medium
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Solution Overview
Problem
Current liquid image forming systems face challenges in displaying images without affecting objects in the liquid medium, as the display device's placement can disrupt the environment, and maintaining adequate image brightness is a concern when light passes through different refractive mediums.
Innovation Solution
A projection system design where a display system is placed in a first medium with a specific refractive index, emitting light to form an image in a second medium with a different refractive index, with carefully controlled distances and brightness attenuation to ensure the image is displayed within the second medium without direct placement, reducing impact on objects and maintaining sufficient brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display device is placed in the liquid medium to display images, then the image can be displayed in the liquid medium, but the display device affects and disrupts the objects in the liquid medium
Solution Approach 1:
The patent introduces a transparent plate as an intermediary component between the display device and the liquid medium. The display device is positioned on one side of the plate while the liquid medium is positioned on the other side. This intermediary plate allows light to pass through and form images in the liquid medium without requiring the display device to be directly immersed in the liquid, thereby avoiding disruption to the objects in the liquid while still achieving image display.
2Adaptability or versatility
If the display device is placed in the liquid medium, then images can be displayed, but the design complexity increases due to the need to accommodate display devices in liquid environments
Solution Approach 1:
The transparent plate serves as a simple intermediary that enables liquid image forming without requiring complex waterproofing or liquid-tight sealing mechanisms. The plate can be easily positioned between the display device and the liquid medium, providing a straightforward solution that avoids the complexity of integrating display devices directly into liquid environments.
3Illumination intensity
If light passes through the second medium to display images, then the image can be formed in the second medium, but the light brightness attenuates
Solution Approach 1:
The patent carefully controls the thickness parameter of the transparent plate and the refractive index parameters of the media to optimize light transmission. By adjusting these parameters, the system minimizes light attenuation while still achieving proper image formation in the liquid medium, thereby maintaining sufficient image brightness.
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
The system effectively displays images in the second medium while minimizing disruption to objects and ensuring the image brightness remains above a required level, enhancing the system's application and user experience.
Implementation Method 1
The first medium has a first refractive index N1, the second medium has a second refractive index N2 different from the first refractive index N1
Implementation Method 2
the light has an attenuation β in the second medium
Data Source
AI summary
A projection system includes a display system, a first medium and a second medium. The display system is configured to emit a light to plan to display an image at a predetermined image forming position. The display system is disposed in the first medium having a first refractive index Ni. The predetermined image forming position is located in the second medium having a second refractive index N2. The second medium has a first side and a second side, a distance FR is included between the first side and the second side, a first distance Li is included between the predetermined image forming position and the display system, a second distance L2 is included between the display system and the second medium, the light has a brightness BS before the light entering the second medium, the light has an attenuation β in the second medium, and the distance FR satisfies:(L1-L2) cot[sin-1(N1N2×12)]≤FR≤100×logβ300BS.