DISPLAY DEVICE

PROBLEM TO BE SOLVED: To increase visibility for a user and suppress a deterioration in visual acuity when prescribed information is presented to the user.SOLUTION: The disclosed display device presents prescribed information to a user P. The display device comprises: a concave mirror 2; an operatio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HEIUCHI TAKAHIRO, SAKAI TAKESHI, SUZUKI YUSUKE, MIICHI NOBUHIRO, FUKUSHIMA SHOGO
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION LABELS OR NAME-PLATES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SEALS SIGNS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To increase visibility for a user and suppress a deterioration in visual acuity when prescribed information is presented to the user.SOLUTION: The disclosed display device presents prescribed information to a user P. The display device comprises: a concave mirror 2; an operation unit 4; and a distance adjustment unit 5. The concave mirror 2 is provided such that the optical distance between an image A (information display medium) and the concave mirror 2 is greater than the focal distance of the concave mirror 2. The concave mirror 2 is formed such that a real image B of the image floats in space. The operating unit 4 acquires information regarding a visual acuity state of the user P. The distance adjustment unit 5 changes the optical distance between the image A and the concave mirror 2 in accordance with the visual acuity state acquired by the operation unit 4, within a range that is greater than the focal distance of the concave mirror 2.