Emission of visible light in response to absorption of excitation light
AssigneeSuperimaging, Inc.
InventorsJian-Qiang Liu, Xiao-Dong Sun
Life of this patent
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Abstract
In accordance with embodiments, viewable images can be created in glass. Viewable images may be created in glass by using a projector which projects ultraviolet light to excite light emitting material. Clear images may be created in glass because the size the light emitting particles in the glass is less than 400 nanometers. In embodiments, the visible illumination of a transparent substrate to display an image is possible, while the transparent substrate remains transparent. Accordingly, for example, drivers of automobiles may view images (e.g. map images) on their windshield while they are driving. As another example, window shoppers may view enhanced advertisements in the windows of stores that they are approaching.
Claims40
An apparatus comprising light emitting material integrated into a substantially transparent substrate, wherein:
- the light emitting material is configured to emit visible light in response to absorption of excitation light;
- the wavelength of the visible light varies according to the wavelength of the excitation light;
- the light emitting material comprises a plurality of light emitting particles;
- and
- each of the plurality of light emitting particles has a diameter less than about 500 nanometers.
A method comprising integrating light emitting material into a substantially transparent substrate, wherein:
- the light emitting material is configured to emit visible light in response to absorption of excitation light;
- the wavelength of the visible light varies according to the wavelength of the excitation light;
- the light emitting material comprises a plurality of light emitting particles;
- and
- each of the plurality of light emitting particles has a diameter less than about 500 nanometers.
A method comprising emitting visible light from light emitting material in response to absorption of excitation light, wherein:
- the light emitting material is integrated into a substantially transparent substrate;
- the wavelength of the visible light varies according to the wavelength of the excitation light;
- the light emitting material comprises a plurality of light emitting particles;
- and
- each of the plurality of light emitting particles has a diameter less than about 500 nanometers.
Dependencies are inferred from the claim text.