Inorganic fluorescent powder as a solid light source

• US 20070262288A1
• Filed: 05/09/2006
• Published: 11/15/2007
• Est. Priority Date: 05/09/2006
• Status: Abandoned Application

• Current Assignee: Shian-Meng Chen
• Original Assignee: Shian-Meng Chen
• Inventors: Naum, Soshchin
• Application Number:
  US11/429,991
• Publication Number:
  US 20070262288A1
• Time in Patent Office: Days
• US Class Current: 252/301.40F
• CPC Class Codes: C09K 11/77742 Silicates
• CPC Class Codes: C09K 11/77922 Silicates
• CPC Class Codes: Y02B 20/00 Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

This is one type of inorganic fluorescent powder that can be used as a solid light source for a UV light. The inorganic fluorescent powder is produced based on garnet silicates and can be activated by rare earth ions. The main composition of this inorganic fluorescent powder is Me⁺²_2.5-x-yLn⁺³_3-q-z-pSi_2.5O₁₂:Lm₁⁺²_X:Lm₂⁺²_Y:Lm₃⁺³_Z:Lm₄⁺³_P. The inorganic fluorescent powder utilizes the excited conditions of short wave light emitted during the combination of different semi-conductors to establish white light radiation with multiple bands. Color temperatures range from 2500° K to 12000° K.

Claims

1. A type of fluorescent inorganic powder for a UV light solid light source, wherein said powder is a fluorescent inorganic powder composition produced based on garnet silicate components that can be activated by rare earth ions, and the main component of the fluorescent inorganic powder is Me⁺²_2.5-x-yLn⁻

3_3-q-z-pSi_2.5O₁₂;

Lm₁⁺²_x;

Lm₂⁺²_Y;

Lm₃⁺³_Z;

Lm₄⁺³_P, whereby the powder uses the activation conditions generated by dissimilar material semi-conductor emitted short wave light to establish multiple band radiation white light.

2. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein Me⁺²=(Mg, and Ca one or more), Ln=(Y, Gd, Lu, and Sc one or more), Lm⁺²₁=(Eu⁺², Sm⁺², and Yb⁺² one or more), Lm⁺²₂=(Mn⁺², and Sn⁺² one or more), Lm⁺³₃=(Ce⁺³, Tb⁺³, and Dy⁺³ one or more), Lm⁺³₄=(Eu⁺³, Tb⁺³, and Bi⁻

3 one or more), x=0-0.2=[Ca]+[Lm⁺²]₁, y=0-0.2=[Ca]+[Lm⁺²]₂, z=0-02=[Lm⁺³]₃, p=0-0.2=[Lm⁺³]₄=0-0.2.

3. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, where 12 times of Ce⁺³, Eu⁻

3, Tb⁺³, and Dy⁺³ ions are added to the Ln nodes, is used to establish activation nodes with high radiation strength, that is, it is the activation agent.

4. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, where, the Ce⁺³ and Tb⁺³ catalyzed materials absorbed solid light source'"'"'s wavelength is λ

=445-455 nm or λ

=365-395 nm energy.

5. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the chemical formula for the fluorescent inorganic powder is Mg_2.5-x-ySm ⁺²_xCa_yY₃Gd_zCe⁺³_zSi_2.5O₁₂, when under activation conditions utilizing short wave light, said fluorescent inorganic powder emits a green-yellow light having color coordinates of x>

=0.30 and y>

=0.32.

6. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the chemical formula for the fluorescent inorganic powder is Mg_2.5-x-yEu⁺²_xCa_yY_3-pLu_1-zGd_zCe⁺³_zTb⁺³_pSi_2.5O₁₂, when under activation conditions of λ

≦

420 nm short wave light, it emits a blue-green-yellow multiple band radiation having residue light length of τ

≦

1.5 ms.

7. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the chemical formula for the fluorescent inorganic powder is Mg_2.5-x-y-zEu⁺²_xCa_ySn⁺²_yY_3-z-qLu_1-zGd_qCe⁺³_zSi_2.5O₁₂, when under activation conditions of wavelength λ

≦

420 nm short wave light, it emits a blue-red-yellow radiation having color coordinates of x≧

0.35, y≧

0.35.

8. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the chemical formula for the fluorescent inorganic powder is Mg_2.5-x-y-zEu⁺²_xCa_yMn⁺²_zGd_2-qSi_2.5O₁₂, when under activation conditions of λ

<

=450 nm short wave light, it emits a blue-green-orange yellow half wave multiple band radiation, whereby color marks are combined with part of the initialization, and are equal to R_a>

85.

9. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the fluorescent inorganic powder has two activation centers for activation, corresponding to locations in cation sub crystal lattice and anion sub crystal lattice, wherein the chemical formula is Mg_2.5-x-y-zEu⁺²_xCa_yMn⁻

2Y_3-qCe_zGd_qPr_pSi_2.5O₁₂, and the powder eliminates at the visible light half wave blue-green-orange yellow area and forms multiple bands of radiation.

10. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the fluorescent inorganic powder has multiple dispersion particle shapes and pine forest rock shapes, the medium line diameter is d₅₀=2-4 mm, the average particle diameter is d_cp=6-8 mm, and the particle diameters are d₉₇=20 mm and d₁₀₀=25 mm.

11. The fluorescent inorganic powder for the UV light solid light source as described in claim 1, wherein the ratios of reflection coefficients and combination connection coefficients for the fluorescent inorganic powder are from 1.65:

1.45 to 1.8;

1.55, and the material can form a stable suspension, wherein the mass content of the fluorescent inorganic powder particle is 10-75%, whereby the fluorescent inorganic powder particle is able to establish a uniform layer with a thickness from between 20 mm to 200 mm.

12-13. -13. (canceled)