Mixed Reality Projection Display

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    Yutaka Tokuda

    Kunihiro Nishimura, Suzuki Yasuhiro,

    Tomohiro Tanikawa, Michitaka Hirose

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    1. Motivation

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    Mixed Reality Public Display without wearable device

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    Fog Half Mirror

    Plasma

    2.1. Conventional Approach

    Water

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    2.2. Remaining Problem

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    2.2. Remaining Problem

    Multi-modality is missing

    Visual-Olfactory-Tactile-Gustatory

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    2.3. Our Approach

    Particle transportation capability is essential

    New immaterial media

    Tranportability

    Scent

    particleIllumination

    particleStimulus

    particle

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    Transportable

    Stable

    Controllable

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    3.1 Vortex Ring

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    On e fluid bursts into different fluidthrough the sharp edge o rifice

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    3.2 How to create Vortex Ring?

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    On e fluid bursts into different fluidthrough the sharp edge o rifice Vortex Ring

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    3.2 How to create Vortex Ring?

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    Olfactory projection display( Yanagida et al.)10

    3.3 Previous Research

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    3.4 Research Objective

    Vortex Ring can beprojection screen ?

    Fog particleScent particle

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    1.Visibility - Can you see image?

    2.Viewing angle - How wide to see ?

    3.Practical problem -Any issue to solve ?12

    4.1 Preliminary Experiment

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    4.2.1 Experimental Setup

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    4.2.2 Experiment Environment

    L = 4.0 [m], = 0, 5, 10, 15 [deg]lighting condition = 0, 178 [lx]

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    4.3.2 Result: Visibility at 178 [lux]

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    4.3.3 Result: Viewing angle

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    4.3.3 Result: Viewing angle

    Mie Light Scatteringdirectional scattering due to a large particle (1 10 m)

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    4.3.4 Result: Practical Problem

    How can we reduce the disturbing wake?

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    4.3.5 Vortex Ring Condition

    Turbulent

    Laminar

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    4.3.5 Vortex Ring Condition

    Turbulent

    LaminarRe =

    UD

    Fn =L

    D

    U: Piston Speed [m/s]D: Diameter of orifice [m]

    v : kinematic viscosity [m2/s]L: Piston Stroke [m]

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    5.2 Prototype Experiment

    U

    L

    Re =UD

    Fn =L

    D

    L = 0.05, 0.10, 0.15 [m], D = 0.20, 0.25, 0.30[m]U = 0.20, 0.40, 0.60 [m/s], v= 15.11 x 10-6[m2/s]

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    5.3 Result: Laminar Turbulent

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    5.3 Result: Laminar Turbulent

    < 10000, Fn < 1.2

    otherwise

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    5.3 Result

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    5.4 Demonstration

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    6. Conclusion

    Vortex Ring: New media for Multi-modal mixed realitydisplay

    Propose Vortex Ring based Immaterial ProjectionDisplay

    Viewing angle around 40 [deg] Re < 10000 and Fn < 1.2 is desired for clear image

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    6. Conclusion

    Vortex Ring: New media for Multi-modal mixed realitydisplay

    Propose Vortex Ring based Immaterial ProjectionDisplay

    Viewing angle around 40 [deg] Re < 10000 and Fn < 1.2 is desired for clear image

    How about Tactile, Gustatory ?

    Vortex Ring Display Visual-Olfactory Display

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    Any Questions?

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    Result of Visibility Smoke Fo g

    Radius(average() 0.560(30) 110(5)

    Density High LowRemaining time(s) 510 0.31

    Speed(cm/s) 86(cm/s) 100(cm/s)

    Brightness Bright Dark

    Smoke particles Fog particles33

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    Prototype system

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