Improved resolution for aerial imaging by retro-reflection with two transparent spheres

Takiyama, Kazuaki; Fujii, Kengo; Yasugi, Masaki; Suyama, Shiro; Yamamoto, Hirotsugu

doi:10.1007/s10043-022-00783-8

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…The proposed optical system produces a high-sharpness aerial image. The sharpness of the aerial image by the AIRR optical system is improved by placing the lenses conjugate to the focal length so that the light rays are collimated [3].…”

Section: Improving Sharpnessmentioning

confidence: 99%

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62‐3: Glassless AR Display in Real Space Using Aerial Imaging

Takiyama,

Nishiyama,

Suyama

et al. 2024

Symp Digest of Tech Papers

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We propose a glassless AR display that fuses real and virtual images by forming aerial images from real objects using aerial imaging. The proposed optical system can increase the size of the optical system, form aerial images with a high sharpness, and form images underwater. Combined with a motion sensor, it can be used as a non‐contact user interface. The proposed optical system is expected to be a new display design as an AR display that does not require special glasses.

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Section: Improving Sharpnessmentioning

confidence: 99%

“…It can be made larger by using AIRR's characteristic freedom of configuration. By approximating the real object as a lens, we use an aerial image sharpening method that combines the lens with the AIRR [3]. In addition, the proposed optical system will form images not only in mid-air but also in water.…”

Section: Introductionmentioning

confidence: 99%

62‐3: Glassless AR Display in Real Space Using Aerial Imaging

Takiyama,

Nishiyama,

Suyama

et al. 2024

Symp Digest of Tech Papers

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“…23 Investigation of the influence of incident angle, anisotropy, and floating distance on aerial imaging resolution 24 and improvement of aerial imaging resolution with two transparent spheres have been reported. 25 Combining spatial blending technique and AIRR, we propose an optical system of spatial blending by utilizing AIRR. Using this method, it is possible to display the gaze and face orientation by spatial blending without inversion.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding the resolution of aerial images, a method for measuring aerial image resolution based on the slanted knife edge method has been proposed 23 . Investigation of the influence of incident angle, anisotropy, and floating distance on aerial imaging resolution 24 and improvement of aerial imaging resolution with two transparent spheres have been reported 25 …”

Section: Introductionmentioning

confidence: 99%

Aerial display that reconstructs face orientation by use of spatial blending of two face images

Kishinami,

Sato,

Yasugi

et al. 2024

J Soc Info Display

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This paper proposes a novel aerial display system that reconstructs face orientation. The proposed system forms two face images floating in mid‐air. Viewers observe a spatially blended image of the two face images, where the spatial blending ratio depends on the viewing position. Thus, the spatially blended aerial face image is perceived to look in a fixed orientation even if the viewing position is changed within a certain viewing range. We analyze the spatial blending system optical design and show results from our prototype display.

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“…The AIRR tablet, where the 3D high-speed hand tracking was integrated into the aerial image formed by AIRR, has also been realized to use aerial display as aerial interface [5]. Brightness and resolution of aerial image are problems for AIRR, but methods to solve these problems in terms of software [6] or hardware [7,8] have also been proposed. Since these studies use laptop-sized aerial images with a short pop-up distance, observations beyond the aerial image position and closer to the beam splitter needs much attention and is not suitable for applications.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of aerial image just around viewing eyes for ultra-wide field-of-view display

Takatsuka,

Watanabe,

Suyama

et al. 2024

Ultra-High-Definition Imaging Systems VII

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This paper proposes a novel display technique that reconstructs an aerial image just around viewing eyes to realize ultrawide field-of-view that cover entire field of view with images. Although it is known that getting closer to the information screen usually makes images larger and covering the entire field of view with images, the closest distance is limited by our nose. However, aerial display overcome this hardware limitation and has a possibility to present information just around the viewing eyes, even behind eyes, because aerial display has no hardware around the aerial image. When observer stands between the display hardware and the aerial image, reconstructed aerial image is behind the observer. To clarify what can be seen in this situation, we have developed a prototype aerial display to form an image just around viewing eyes by using aerial imaging by retro-reflection (AIRR). The image size for observer and binocular disparity have been estimated using this prototype. Even when aerial image is reconstructed behind viewing eyes, inverted image to aerial image can be observed, , whose size and negative disparity become very large toward infinity. Furthermore, our proposed method can cover entire field of view with images. This method is promising for new possibilities for aerial displays, such as one providing an immersive sensation with ultra-wide field-of-view.

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Improved resolution for aerial imaging by retro-reflection with two transparent spheres

Cited by 5 publications

References 8 publications

62‐3: Glassless AR Display in Real Space Using Aerial Imaging

62‐3: Glassless AR Display in Real Space Using Aerial Imaging

Aerial display that reconstructs face orientation by use of spatial blending of two face images

Reconstruction of aerial image just around viewing eyes for ultra-wide field-of-view display

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