Holographic Display Light Source Optical Conversion
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Solution Overview
Problem
Current holographic display technologies face challenges in achieving clear diffraction patterns due to light diffusion and phase changes caused by reflective surfaces, leading to blurred image patterns.
Innovation Solution
A holographic display apparatus is designed with a light source on a black printed circuit board, utilizing a condensing lens and masks to control light paths, converting point light sources into surface light sources, and using a liquid crystal display panel to modulate light, thereby reducing light diffusion and enhancing image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a light source is used directly without optical conversion, then the device structure is simple, but the light diffusion is severe and the diffraction pattern clarity is poor
Solution Approach 1:
An optical system acts as an intermediary between the light source and the display panel. This optical system includes components that convert the light from the light source into surface light, thereby reducing light diffusion and improving diffraction pattern clarity without requiring direct complex modifications to the light source or display panel.
Solution Approach 2:
The optical system changes the parameters of the light, specifically converting point light sources into surface light sources. This parameter change in the light distribution pattern reduces the beam size and improves the clarity of the diffraction pattern while maintaining a relatively simple overall device structure.
2Manufacturing precision
If the beam size is reduced to improve diffraction pattern clarity, then the luminance increases, but the viewing angle may be limited
Solution Approach 1:
The optical system converts light from a point source (zero-dimensional) to a surface light source (two-dimensional distribution). This dimensional change allows the light to be distributed across a surface area, which reduces the beam size for better diffraction pattern clarity while maintaining broad viewing angles through the surface distribution of light.
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 apparatus achieves improved image clarity and reduced beam size, increasing luminance and viewing angles by minimizing light reflection and diffusion, resulting in sharper and more defined diffraction patterns.
Implementation Method 1
a condensing lens disposed between the light source and the optical system, and collecting the light transferred from the light source
Implementation Method 2
a display panel diffracting light transferred from the light source
Implementation Method 3
the optical system may convert the light incident from the light source into a surface light source
Data Source
AI summary
A holographic display apparatus includes a light source disposed on a printed circuit board, a display panel diffracting light transferred from the light source, and an optical system disposed between the light source and the display panel. The optical system converts the light incident from the light source into a surface light source.