A two and three dimensional display based on up conversion of near infrared light to the visible. The display medium is a transparent polymer containing particles of crystals doped with Yb.sup.3+ and other rare earth ions. The Yb.sup.3+ ions absorb light from a commercially available diode laser emitting near 975 nm and transfer that energy to the other dopant ions. Using a fluoride crystal host, NaYF.sub.4, co-doped with Tm.sup.3+ ions we obtain blue light at .about.480 nm, with Ho.sup.3+ or Er.sup.3+ ions we obtain green light at .about.550 nm and with Er.sup.3+ we obtain red light at .about.660 nm. The display medium is also used with a preferred component layout with experimentation test data, along with applications for full color, high brightness, high resolution, displays.
Application Serial Number
Assignee at Issuance
College of Optics and Photonics
Assignee at Filing
Nonprovisional Application Record
Bass, Michael; Jennsen, Hans; and Rapaport, Alexandra, "Dispersed Crystallite Up-Conversion Displays" (2003). UCF Patents. 127.