Air Density Front Projection Using Synchronized Sound Waves
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Solution Overview
Problem
Current techniques for projecting light into ambient air lack diversity and quality without a solid screen, and there is a need for methods to make images visible in fluid media like air.
Innovation Solution
A device that projects light onto a density front in ambient air by varying the gas density using sources such as heat or sound waves, creating a refractive and reflective surface for image projection, combined with controlled light sources and synchronization to enhance image quality and diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light is projected into ambient air without a solid screen, then the projection can be made in the absence of a physical screen, but the quality and diversity of images are insufficient
Solution Approach 1:
The patent introduces an acoustic field as an intermediary medium between the light source and the observer. Sound waves create density variations in air that act as a temporary projection surface, allowing light to be displayed without solid screens while maintaining image quality through controlled acoustic fields.
Solution Approach 2:
The patent modifies the physical parameters of air by using acoustic waves to create localized density changes. These parameter changes in the air medium create refractive index variations that form visible projection surfaces, enabling both flexibility in projection locations and adequate image quality.
2Adaptability or versatility
If density variation sources are used to create projection surfaces in air, then images can be projected without solid screens, but the complexity of the device increases
Solution Approach 1:
The patent employs acoustic waves that serve multiple functions: they create the projection surface, define the projection area, and can be dynamically repositioned. This multi-functionality reduces the need for separate components for surface creation and positioning, thereby managing device complexity while enhancing versatility.
Solution Approach 2:
The patent uses dynamically controllable acoustic fields that can be repositioned and reshaped in real-time. This dynamic approach replaces static solid screens with flexible, programmable acoustic surfaces, achieving versatility through software control rather than hardware complexity.
3Illumination intensity
If sound waves are used to create density fronts for light projection, then visible projections in air are achieved, but synchronization with light frequency is required
Solution Approach 1:
The patent implements feedback control mechanisms that monitor the acoustic field and adjust the light projection timing accordingly. This feedback system automatically synchronizes the light frequency with the acoustic wave frequency, achieving visible projections while managing synchronization complexity through automated control.
Solution Approach 2:
The patent utilizes the periodic nature of acoustic waves to create rhythmically repeating projection surfaces. By synchronizing light emission with these periodic acoustic cycles, the system achieves consistent visibility without requiring complex continuous adjustment mechanisms.
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 device produces more diverse and higher quality images in ambient air by exploiting density variations in gas, allowing for visible projections without a physical screen, with adjustable focus and synchronization to maintain image clarity.
Implementation Method 1
The difference in density produces a variation in the refractive index of light in the gaseous medium, which can make light projections visible
Implementation Method 2
Depending on the angles of incidence of light projections on a surface defined by a variation in gas density, the reflection and/or refraction of the emitted light on such a surface can be observed
Implementation Method 3
The density of air can vary, particularly due to thermal diffusion in the atmosphere
Implementation Method 4
A source of density variation can allow for the local production of a higher or lower density than the average density
Data Source
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AI summary
The present invention relates to a device (1) for projecting light into a fluid environment (40), comprising at least one density-varying source (10) for locally varying the density of the fluid environment to produce at least one density front, and at least one light projection source (20), comprising a light source adapted for projecting at least one image (30) onto said at least one density front (11). The density front may be a compression wave having a frequency (F11). The image may be emitted intermittently at a frequency corresponding to the frequency of the wave. The present invention further covers a method of optical projection using this device.