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US 11,668,952 B2Granted
Volumetric display
AssigneeNational University Corporation Gunma University
InventorHiromasa Oku
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Abstract
A volumetric display capable of high-speed image presentation includes a resonance-type liquid lens having a focal length that is periodically adjusted using resonance of a liquid. An image projector projects an image toward a viewpoint position of a user via the resonance-type liquid lens. Further, the image projector projects an image toward the viewpoint position within a shorter time period than one-tenth of a variation cycle of the focal length. The image projector includes an LED and a DMD, for example.
Claims5
A volumetric display comprising:
- an image projector;
- and
- a resonance-type liquid lens, wherein:
- a focal length of the resonance-type liquid lens is periodically adjusted using resonance of a liquid,
- the image projector is configured to project an image toward a viewpoint position of a user via the resonance-type liquid lens, and
- the image projector is configured to project the image within a shorter time period than one-tenth of a variation cycle of the focal length.
3 more elements
Dependencies are inferred from the claim text.