Refractive Optical Screen Prism Array Floating Hologram
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Solution Overview
Problem
Current floating hologram technologies require a dark environment to minimize ambient light interference, limiting their use due to the need for high ANSI lumen projectors and small amounts of reflected light, which restricts their application to dark spaces.
Innovation Solution
A refractive optical screen using a prism array that refracts incident light beams to create virtual images, allowing for a floating hologram effect by adjusting the travel direction of light beams, enabling the display of multiple images as if they exist in one physical space without the need for high reflectivity or minimal ambient light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent reflective film is used to simultaneously transmit background light and reflect floor image, then the floating hologram effect is achieved, but the amount of reflected light is small requiring dark environment
Solution Approach 1:
The optical screen is divided into multiple regions with different optical properties: a first region with high reflectivity for displaying the floor image, and a second region with high transmittance for allowing background light to pass through. This segmentation enables each region to optimize its function independently, solving the contradiction between reflection and transmission requirements.
Solution Approach 2:
Different portions of the optical screen are assigned different local optical characteristics. The first region is designed with high reflectivity specifically for the floor image area, while the second region maintains high transmittance for the background area. This local quality differentiation allows the system to achieve both strong reflected light intensity and good background visibility simultaneously.
2Illumination intensity
If high ANSI lumen projector is used to increase reflected light intensity, then the hologram image becomes clearer, but the device complexity and cost increase
Solution Approach 1:
The optical properties of the screen are changed by adjusting the reflectivity and transmittance parameters of different regions. By increasing the reflectivity parameter of the first region, the system achieves higher reflected light intensity without requiring a more powerful projector, thus avoiding increased device complexity and cost.
3Adaptability or versatility
If the optical screen is inclined at 45° to achieve virtual image formation, then the floating hologram effect is created, but the reflected light intensity remains insufficient in bright environments
Solution Approach 1:
The optical screen is segmented into a first region optimized for reflection at the 45° inclination angle to create the virtual floor image, and a second region optimized for light transmission to maintain background visibility. This segmentation allows the reflected light from the floor image to be concentrated in the first region, increasing its intensity without compromising the virtual image formation effect.
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
Enables the creation of a floating hologram effect in a non-dark environment by refracting light beams, allowing multiple virtual images to be displayed as if they coexist in one space, enhancing the visibility and application scope of hologram technology.
Implementation Method 1
a refractive optical screen which refracts incident light beams and adjusts a travelling direction of the light beams
Data Source
AI summary
Disclosed are a refractive optical screen and a floating hologram system using the same. The refractive optical screen is a refractive optical screen which refracts incident light beams and adjusts a travelling direction of the light beams, and includes a prism array in which a plurality of prisms refracting one or more light beams toward a viewing direction of a viewer located at the front side of the refractive optical screen is arranged in a line, and one or more virtual images generated by the one or more refracted light beams simultaneously form a floating hologram arranged in the viewing direction.