Hologram Projection Screen with Lens Array for 3D Display
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Solution Overview
Problem
Conventional projection screens fail to provide optimal displaying effects and do not allow for three-dimensional or floating image experiences, limiting their application in environments where secrecy and high visual quality are required.
Innovation Solution
A hologram projection screen with a screen body featuring a hologram lens array, manufactured through recording hologram lens information on a photoresist plate, metalizing, and embossing thermoplastic material, allowing for transparent or semi-transparent displays that enable viewing from the front and back with images appearing three-dimensional and floating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional projection screens are used, then the projector can display images, but the displaying effect is tedious and cannot provide three-dimensional or floating image experiences
Solution Approach 1:
The screen is segmented into multiple hologram lenses arranged in an array, where each lens corresponds to a specific viewing angle. This segmentation enables the screen to display different images to different viewers, creating three-dimensional and floating image effects while maintaining a relatively simple overall structure.
Solution Approach 2:
The invention uses a master plate containing hologram lens information to create multiple copies through embossing thermoplastic material. This copying process allows mass production of screens with precise hologram lens patterns, achieving complex displaying effects without increasing the complexity of the manufacturing process.
2Illumination intensity
If a transparent or semi-transparent screen is used to allow viewing from front and back, then the light permeance increases, but the image quality and contrast may deteriorate
Solution Approach 1:
The screen employs hologram lenses with specific optical properties at different locations to control light transmission and image formation. Each lens is designed to redirect light from the projector to specific viewing zones, ensuring high image quality and contrast are maintained in both front and back viewing directions while allowing light permeance.
3Adaptability or versatility
If the projector is hidden for secrecy, then the security increases, but the alignment and positioning become more difficult
Solution Approach 1:
The hologram lens array creates specific viewing zones and angles, allowing the projector to be positioned in locations that were previously not suitable. The optical design of the lenses compensates for misalignment and enables the projector to remain hidden while maintaining proper image projection through the screen's optical guidance.
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 hologram projection screen provides a high permeance of light, high luminance, and high contrast, enabling three-dimensional image projection that can be viewed from the front and back, while allowing the projector to remain hidden, suitable for various applications such as exhibition windows, stores, and museums.
Implementation Method 1
one path is used to obtain the objective light of the lens, the other path is used as a reference light, the objective light and the reference light converge onto the photoresist plate with an angle therebetween, to expose the photoresist
Implementation Method 2
Metalizing the photoresist plate that has been exposed, to produce the nickel master plate of a hologram lens array through electroforming
Implementation Method 3
Using the above master plate to emboss thermoplastic material, so as to obtain a screen body, on which the information of the hologram lens array is arranged
Data Source
AI summary
A method for manufacturing a hologram projection screen includes the steps of: 1) recording hologram lens information on a photoresist plate; 2) metalizing the photoresist plate that has been exposed, to produce a master nickel plate of a hologram lens array through electroforming and joining; and 3) using the master nickel plate to emboss thermoplastic material, to obtain a screen body, on which the information of the hologram lens array is arranged. The hologram projection screen manufactured by this method can provide a variety of display contents.