Patent US6501590B2 successfully refreshed from Google Patents.
US6501590B2
Expired / Lapsed
US
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Display medium using emitting particles dispersed in a transparent host
Assignee: University of Central Florida Research Foundation Inc
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Filing: 2001-10-12
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Granted: 2002-12-31
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Expires: 2021-10-12
Abstract
Abstract Two and three dimensional color image displays. The displays include a display medium having a substantially uniform dispersion of red, green and blue visible light emitting particles sized between approximately 0.5 to approximately 50 microns therethrough. The particles can be dye doped polymethylmethacrylate(pmma) plastic, and the display medium can be pmma, acrylic plastic or glass. Other particles can be used such as rare earth doped crystals. The two dimensional display uses three laser sources each having different wavelengths that direct light beams to each of three different types of particle in the display medium. Light is absorbed by the particles which then become excited and emit visible fluorescence. Modulators, scanners and lens can be used to move and focus the laser beams to different pixels in order to form the two dimensional images having different visible colors.
Inventors
- 👤 Michael Bass
- 👤 Hans Jennsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:35
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/08; C09K11/77; C09K11/7766; C09K11/7772; C09K11/7773; G; G02; G02F; G02F2/00; G02F2/02; G09; G09F; G09F13/00; G09F13/20; H; H04; H04N; H04N13/00; H04N13/30; H04N13/324; H04N13/388; H04N13/39
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
72 words
A two dimensional color image display system, comprising in combination: first particles containing dye doped plastics dispersed within a transparent display medium; means for generating a first light beam having a first wavelength; and means for exciting the first particles within the transparent display medium, wherein the first particles absorb the first light beam and form a first visible light color from the first particles being excited by the first light beam.
Claim 2
Dependent Claim
72 words
A two dimensional color image display system, comprising in combination: first particles containing dye doped plastics dispersed within a transparent display medium; means for generating a first light beam having a first wavelength; and means for exciting the first particles within the transparent display medium, wherein the first particles absorb the first light beam and form a first visible light color from the first particles being excited by the first light beam.
Claim 3
Dependent Claim
88 words
The two dimensional color image display system of claim 1 , further comprising: second particles dispersed within the transparent display medium; means for generating a second light beam having a second wavelength which is different from the first wavelength; means for exciting the second particles within the transparent display medium, wherein the second particles absorb the second light beam and form a second visible light color from the second particles being excited by the second light beam, the second visible color being different from the first visible color.
Claim 4
Dependent Claim
45 words
The two dimensional color image display system of claim 2 , further comprising: means for moving the first light beam and the second light beam to excite different particles in different places in the display medium to form the two dimensional image in two colors.
Claim 5
Dependent Claim
27 words
The two dimensional color image display system of claim 2 , wherein at least one of the first particles and the second particles include: dye doped plastics.
Claim 6
Dependent Claim
18 words
The two dimensional color image display system of claim 4 , wherein the dye doped plastics include: polymethylmethacrylate(pmma).
Claim 7
Dependent Claim
42 words
The two dimensional color image display system of claim 2 , wherein at least one of the first particles and the second particles are chosen from at least one of: rare earth crystals, transition metal doped crystals, and rare earth doped glasses.
Claim 8
Dependent Claim
18 words
The two dimensional color image display system of claim 1 , wherein the dye doped plastics include: polymethylmethacrylate(pmma).
Claim 9
Dependent Claim
26 words
The two dimensional color image display system of claim 1 , wherein the first particles include: sizes of approximately 0.5 microns to approximately 50 microns each.
Claim 10
Dependent Claim
34 words
The two dimensional color image display system of claim 1 , wherein the first particles are chosen from at least one of: rare earth crystals, transition metal doped crystals, and rare earth doped glasses.
Claim 11
Dependent Claim
80 words
A two dimensional color image display system, comprising in combination: first particles which include: sodium yttrium fluoride(NaYF4) doped with rare earth family emitting ions dispersed within a transparent display medium; means for generating a first light beam having a first wavelength; and means for exciting the first particles within the transparent display medium, wherein the first particles absorb the first light beam and form a first visible light color from the first particles being excited by the first light beam.
Claim 12
Dependent Claim
80 words
A two dimensional color image display system, comprising in combination: first particles which include: sodium yttrium fluoride(NaYF4) doped with rare earth family emitting ions dispersed within a transparent display medium; means for generating a first light beam having a first wavelength; and means for exciting the first particles within the transparent display medium, wherein the first particles absorb the first light beam and form a first visible light color from the first particles being excited by the first light beam.
Claim 13
Dependent Claim
30 words
The two dimensional color image display system of claim 10 , wherein the rare earth family emitting ions are chosen from at least one of: Er(erbium), Tm(thulium), Ho(holmium) and Pr(praseodymium).
Claim 14
Dependent Claim
44 words
The two dimensional color image display system of claim 10 , further comprising: second particles in the display medium, wherein at least one of the first particles and the second particles include: the sodium yttrium fluoride(NaYF4) doped with the rare earth family emitting ions.
Claim 15
Dependent Claim
30 words
The two dimensional color image display system of claim 12 , wherein the rare earth family emitting ions are chosen from at least one of: Er(erbium), Tm(thulium), Ho(holmium) and Pr(praseodymium).
Claim 16
Dependent Claim
100 words
A three dimensional color image display system, comprising in combination: first particles dispersed within a transparent display medium wherein the first particles are selected from at least one of: dye doped plastics and sodium yttrium fluoride(NaYF4) doped with rare earth family emitting ions; means for generating a first light beam having a first wavelength; means for generating a second light beam having a second wavelength different from the first wavelength; and means for intersecting the first beam and the second beam at the first particles to excite a first visible color at the first particles within the transparent display medium.
Claim 17
Dependent Claim
100 words
A three dimensional color image display system, comprising in combination: first particles dispersed within a transparent display medium wherein the first particles are selected from at least one of: dye doped plastics and sodium yttrium fluoride(NaYF4) doped with rare earth family emitting ions; means for generating a first light beam having a first wavelength; means for generating a second light beam having a second wavelength different from the first wavelength; and means for intersecting the first beam and the second beam at the first particles to excite a first visible color at the first particles within the transparent display medium.
Claim 18
Dependent Claim
92 words
The three dimensional color image display system of claim 14 , further comprising: second particles dispersed within the transparent display medium; means for generating a third light beam having a third wavelength; means for generating a fourth light beam having a fourth wavelength being different from the third wavelength; and means for intersecting the third light beam and the fourth light beam at the second particles to excite a second visible color at the second particles within the transparent display medium, the second visible color being different from the first visible color.
Claim 19
Dependent Claim
28 words
The three dimensional color image display system of claim 15 , further comprising: means for moving the intersecting beams to form the three dimensional image having different colors.
Claim 20
Dependent Claim
26 words
The three dimensional color image display system of claim 15 , wherein the first particles include: sizes of approximately 0.5 microns to approximately 50 microns each.
Claim 21
Dependent Claim
18 words
The three dimensional color image display system of claim 14 , wherein the dye doped plastics include polymethylmethacrylate(pmma).
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