Multi-layered aerial LED display with occlusions between layers

Yamamoto, Hirotsugu; Bando, Hiroki; Kujime, Ryousuke; Suyama, Shiro

doi:10.1364/jsap.2013.17a_d5_7

Cited by 1 publication

(1 citation statement)

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“…The aerial image is expected to give a near-future feeling and great impact to users by combining with cameras and sensors that detects their gestures. [3][4][5][6] To form an aerial image, there are following many methods: a method using two reflections by two orthogonal mirrors, 7) a method using an array structure with two orthogonal surfaces, [8][9][10][11] a method using a mirror array processed in a strip, 12,13) a method using liquid crystal display and micro lens array, 14) a method using Fresnel lens, 15) and a wide variety of methods, [16][17][18][19][20][21][22][23][24][25][26][27] including a method using a reflector called aerial imaging by retroreflection (AIRR). 17,18) AIRR features a low cost, a wide viewing angle and a large-size scalability.…”

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confidence: 99%

Multiple aerial imaging by use of infinity mirror and oblique retro-reflector

Chiba

Yasugi

Yamamoto

2020

Jpn. J. Appl. Phys.

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We have realized a new optical system to form multiple aerial images by use of thin optical components. The proposed optical system is based on aerial imaging by retro-reflection (AIRR). The aerial image formed by AIRR is visible over a wide viewing angle without using 3D glasses. In addition to AIRR, we have introduced a technique called infinity mirror in which a mirror and a half mirror are arranged in parallel to form multiple virtual images of a single light source. By combining AIRR and infinity mirror, multiple images are formed in mid-air. By placing a retro-reflector obliquely outside the infinity mirror, our proposed optics improves the brightness of the aerial images by placing.

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