Mobile terminal including diffractive optical element moved different distances to irradiate different light patterns on a subject
US10634926B2 · kind B2 · utility
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1References
13Claims
0Family size
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Key dates
| Filing date | May 16, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Nov 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mobile terminal having a lighting device including a light emitting element, a diffractive optical element (DOE) to diffract a part of light output from the light emitting element, and a driving unit to move the diffractive optical element so as to vary a distance between the light emitting element and the diffractive optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.