Excitation light emission apparatus
AssigneeSuperimaging, Inc.
InventorsXiao-Dong Sun, Jian-Qiang Liu
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.
Claims28
An apparatus comprising:
- a light source;
- a projection modulator, wherein:
- the projection modulator is configured to modulate light emitted from the light source;
- and
- the projection modulator is configured to modulate light having a wavelength less than 500 nanometers;
- and
- a variable light filter, wherein:
- the variable light filter is configured to selectively transmit at least two different wavelength ranges of light, and
- the at least two different wavelength ranges of light comprise light with a wavelength less than 500 nanometers.
A method comprising:
- emitting light from a light source;
- modulating the light having a wavelength less than 500 nanometers at a projection modulator;
- and
- filtering the light at a variable light filter, wherein:
- the variable light filter is configured to selectively transmit at least two different wavelength ranges of light, and
- the at least two different wavelength ranges of light comprise light with a wavelength less than 500 nanometers.
A method comprising integrating a light source, a projection modulator, and a variable light filter into a projector, wherein:
- the projection modulator is configured to modulate light having a wavelength less than 500 nanometers emitted from the light source;
- and
- the variable light filter is configured to selectively transmit at least two different wavelength ranges of light, and
- the at least two different wavelength ranges of light comprise light with a wavelength less than 500 nanometers.
Dependencies are inferred from the claim text.