1-8. (canceled)
9. A lens arrangement for an LED display device, the lens arrangement comprising:
a lens having a first lens surface and an optical axis that penetrates the first lens surface of the lens; and
a transparent transition body firmly coupled to the lens at the first lens surface, the transparent transition body being more temperature-resistant than the lens and having an optical axis that is parallel to the optical axis of the lens.
10. The lens arrangement according to claim 9, wherein the optical axis of the lens corresponds to the optical axis of the transparent transition body and wherein the two optical axes form an optical axis of the lens arrangement.
11. The lens arrangement according to claim 9, wherein the lens is more dimensionally stable than the transparent transition body.
12. The lens arrangement according to claim 9, wherein the transparent transition body at least partially surrounds the lens in a radial direction.
13. The lens arrangement according to claim 9, wherein the lens has at least one recess and wherein the transparent transition body has at least one holding body that protrudes into the at least one recess of the lens.
14. The lens arrangement according to claim 9, wherein the transparent transition body is suitable for protecting the lens from radiation-based influences.
15. The lens arrangement according to claim 14, wherein the transparent transition body is provided for placement between the lens and a light source.
16. The lens arrangement according to claim 15, wherein the transparent transition body is suitable for reducing a radiation density on the lens (8).
17. An LED display device comprising:
a housing that comprises an opening;
at least one LED located in the housing in such a way that radiation that is radiated in a main radiation direction of the LED exits through the opening of the housing;
a lens having an optical axis that penetrates a first lens surface of the lens; and
a transparent transition body firmly coupled with the lens between the lens and the at least one LED, the transparent transition body being more temperature-resistant than the lens and having an optical axis that is parallel to the optical axis of the lens, the lens and transparent transition body being located in such a way that the radiation emitted from the at least one LED in the main radiation direction penetrates the transparent transition body and the lens.
18. The LED display device according to claim 17, wherein the transparent transition body is spaced from the LED by a distance.
19. The LED display device according to claim 17, wherein the transparent transition body is mounted on the LED.
20. The LED display device according to claim 17, wherein the LED is at least partially sheathed by a transparent casting compound.
21. The LED display device according to claim 17, wherein the optical axis of the lens corresponds to the optical axis of the transparent transition body and wherein the two optical axes form an optical axis of the LED display device.
22. The LED display device according to claim 17, wherein the lens is more dimensionally stable than the transparent transition body.
23. The LED display device according to claim 17, wherein the transparent transition body at least partially surrounds the lens in a radial direction.
24. The LED display device according to claim 17, wherein the lens has at least one recess and wherein the transparent transition body has at least one holding body that protrudes into a recess of the lens.
25. The LED display device according to claim 17, wherein the transparent transition body is suitable for protecting the lens from radiation-based influences.
26. The LED display device according to claim 17, wherein the transparent transition body is suitable for reducing a radiation density on the lens.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A recycled Nd\u2014Fe\u2014B sintered magnet comprising:
a composition of WaRbAc, where waste material W comprises material from a waste Nd\u2014Fe\u2014B sintered magnet, rare earth containing material R comprises Nd and Pr at a ratio of 75 wt. % Nd to 25 wt. % Pr and 0.1 to 1 at. % of the recycled Nd\u2014Fe\u2014B sintered magnet, and elemental additives A comprising a) Co, b) Cu, and c) Fe;
indices a, b, and c indicate atomic percentages of the corresponding compositions or elements;
a(t) is the atomic percent of element t in the waste material W relative to the composition of the recycled Nd\u2014Fe\u2014B sintered magnet;
b(t) is the atomic percent of element t in the rare earth containing material R relative to the composition of the recycled Nd\u2014Fe\u2014B sintered magnet;
c(t) is the atomic percent of element t in the elemental additives A relative to the composition of the recycled Nd\u2014Fe\u2014B sintered magnet; and
a, b, c, a(t), b(t), and c(t) have values satisfying:
81 at. %\u2266a\u226699.9 at. %,
0.1 at. %\u2266b+c\u226619 at. %,
3 at. %-99.9%*a(Co)\u2266c(Co)\u22663 at.%-81%*a(Co), wherein a(Co)\u22663.003003003 at. %,
0.3 at. %-99.9%*a(Cu)\u2266c(Cu)\u22660.3 at. %-81%*a(Cu), wherein a(Cu)\u22660.3003003 at. %,
77 at. %-99.9%*(a(Fe)+a(Co))\u2266c(Fe)\u226677 at. %-81%*(a(Fe)+a(Co)), wherein (a(Fe)+a(Co))<77.07707708 at. %,
a(Nd)+b(Nd)+c(Nd)+a(Pr)+b(Pr)+c(Pr)>0 at. %,
a(Nd)+b(Nd)+c(Nd)+a(Pr)+b(Pr)+c(Pr)+a(Dy)+b(Dy)+c(Dy)\u226618 at. %,
a(Co)+b(Co)+c(Co)\u22663 at. %,
a(Cu)+b(Cu)+c(Cu)\u22660.3 at. %,
a(Fe)+b(Fe)+c(Fe)+a(Co)+b(Co)+c(Co)\u226677 at. %, and
b(Nd)+c(Nd)+b(Pr)+c(Pr)+b(Dy)+c(Dy)\u22670 at. %.
2. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 wherein the rare earth containing material R and the elemental additives A are distributed in the grain boundary homogeneously throughout the thickness of the recycled Nd\u2014Fe\u2014B sintered magnet such that a concentration of the rare earth containing material R and a concentration of the elemental additives A increases on average in a mixture of waste material W surrounding the primary Nd2Fe14B phase within the recycled Nd\u2014Fe\u2014B sintered magnet.
3. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising an average particle size less than 5 microns.
4. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising an average particle size less than 2.5 microns.
5. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising a density between about 7.56 gcm3 to about 7.6 gcm3.
6. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising a remanence and a coercivity at least the same as the waste Nd\u2014Fe\u2014B sintered magnet.
7. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 6 wherein the coercivity is between about 0 to about 20% greater than the coercivity of the waste Nd\u2014Fe\u2014B sintered magnet.
8. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising a remanence about 97% of another remanence of the waste Nd\u2014Fe\u2014B sintered magnet and a coercivity at least 30% greater than another coercivity of the waste Nd\u2014Fe\u2014B sintered magnet.
9. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising a remanence about 95% of another remanence of the waste Nd\u2014Fe\u2014B sintered magnet and a coercivity at least 80% greater than another coercivity of the waste Nd\u2014Fe\u2014B sintered magnet.
10. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising a remanence about 5% greater than another remanence of the waste Nd\u2014Fe\u2014B sintered magnet and a coercivity is at least the same as another coercivity of the waste Nd\u2014Fe\u2014B sintered magnet.
11. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 wherein a combined atomic percentage of Nd, Pr, and Dy in the recycled Nd\u2014Fe\u2014B sintered magnetic is greater than or equal to a combined atomic percentage of Nd, Pr, and Dy in the waste Nd\u2014Fe\u2014B sintered magnet.
12. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising 1.98 at. % oxygen or less.
13. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 comprising between 1.32 to 1.98 at. % oxygen.
14. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 wherein the elemental additives A comprise Dy.
15. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 1 wherein the elemental additives A comprise the rare earth containing material R.
16. A recycled Nd\u2014Fe\u2014B sintered magnet comprising a composition of WaRbAc, where waste material W comprises material from a waste Nd\u2014Fe\u2014B sintered magnet, rare earth containing material R comprises Nd and Pr at a ratio of 75 wt. % Nd to 25 wt. % Pr and 0.1 to 1 at. % of the recycled Nd\u2014Fe\u2014B sintered magnet, and elemental additives A comprises at least one of: a) Nd, b) Pr, c) Dy, d) Co, e) Cu, or f) Fe, and indices a, b, and c indicate atomic percentages of the corresponding compositions or elements and the rare earth containing material R and the elemental additives A have values satisfying:
Nd0.1-19%*s(Nd), x,
Pr0.1-19%*s(Pr), y,
Dy0.1-19%*s(Dy), z,
Co0 at. %, d,
Cu0 at. %, e,
Fe0 at. %, f,
wherein:
m, n means a range from a first value in a minimum interval m and a second value in a maximum interval n;
s(t) is the atomic percent of element t in starting composition;
x=18 at. %-81, 99.9%*(s(Nd)+s(Pr)+s(Dy)), wherein (s(Nd)+s(Pr)+s(Dy))<18.01801802 at. %;
y=18 at. %-81, 99.9%*(s(Nd)+s(Pr)+s(Dy));
z=18 at. %-81, 99.9%*(s(Nd)+s(Pr)+s(Dy));
d=3 at. %-81, 99.9%*s(Co), wherein s(Co)<3.003003003 at. %;
e=0.3 at. %-81, 99.9%*s(Cu), wherein s(Cu)<0.3003003 at. %; and
f=77 at.%-81, 99.9%*(s(Fe)+s(Co)), wherein (s(Fe)+s(Co))<77.07707708 at. %.
17. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 wherein the rare earth containing material R and the elemental additives A are distributed in the grain boundary homogeneously throughout the thickness of the recycled Nd\u2014Fe\u2014B sintered magnet such that a concentration of the rare earth containing material R and a concentration of the elemental additives A increases on average in a mixture of waste material W surrounding the primary Nd2Fe14B phase within the recycled Nd\u2014Fe\u2014B sintered magnet.
18. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 wherein a first atomic percentage of the waste material W in the recycled Nd\u2014Fe\u2014B sintered magnet is between about 99.9 at. % and about 81 at. % and a second atomic percentage of a combination of the rare earth containing material R and the elemental additives A in the recycled Nd\u2014Fe\u2014B sintered magnet is between about 0.1 at. % and about 19 at. %.
19. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising an average particle size less than 5 microns.
20. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising an average particle size less than 2.5 microns.
21. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising a density between about 7.56 gcm3 to about 7.6 gcm3.
22. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising an atomic percentage of Co less than or equal to 3 at. %.
23. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising an atomic percentage of Cu less than or equal to 0.3 at. %.
24. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising a combined atomic percentage of Fe and Co less than or equal to 77 at. %.
25. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising a combined atomic percentage of Nd, Dy, and Pr less than or equal to 18 at. %.
26. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 wherein the elemental additives A comprise the rare earth containing material R.
27. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 wherein the elemental additives A comprise Dy.
28. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising 1.98 at. % oxygen or less.
29. The recycled Nd\u2014Fe\u2014B sintered magnet of claim 16 comprising between 1.32 to 1.98 at. % oxygen.