Projection system and method comprising a fluorescence...

Details Projection system and method comprising a fluorescence... Projection system and method comprising a fluorescence...

2006-06-06

2006-06-06

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

C353S013000, C349S002000, C349S071000, C349S027000, C430S021000, C430S508000, C428S001230, C428S001320, C345S047000

Reexamination Certificate

active

07057811

ABSTRACT:
A projection system and method are provided, the system includes a radiation source for generating electromagnetic radiation outside the visible wavelength range, an imaging unit, which can be irradiated by the radiation source, and a projection screen having a radiation-sensitive surface which, when excited by means of the above-mentioned invisible radiation, can emit fluorescent light in the visible wavelength range. The radiation-sensitive surface is formed of a material which, irrespective of the position, emits fluorescent light of different wavelengths as a function of the wavelength of the excitation radiation, and the radiation source can emit excitation radiation of different wavelengths.

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