Glass ceramic devices and methods with tunable infrared transmittance
Devices, apparatuses, and methods are disclosed that include a glass or glass ceramic substrate with a bleached region and an unbleached region. Examples include a substrate with a region that transmits IR wavelength light, and a region that is substantially opaque to IR light. Examples include additional opacity in some or all regions to visible wavelength light and/or UV wavelength light.
1. A device comprising:
a substrate comprising a glass or glass-ceramic material comprising about 0.1% to about 50% by weight crystalline phase;
the substrate comprising an unbleached region and a bleached discrete region comprising at least partially dissolved or altered crystalline phase wherein an average ratio of absorbance in the unbleached/bleached regions over the near infra-red (NIR) wavelength range of 700-2000 nm is equal to or greater than 7.5;
wherein the substrate is substantially opaque in the visible wavelength range of 400 nm to 700 nm and the unbleached region exhibits an average absorbance of 1.0 OD/mm or greater in the visible wavelength range of 400 nm to 700 nm; and
wherein the substrate includes a modifiable crystalline phase consisting of an oxide or sub-oxide comprising tungsten and/or molybdenum that may be doped with any combination of: Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Ra, Ti, Zn, Se, Nb, Ru, Rh, In, Sn, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein this modifiable component amount is about 0.35 mol % to about 30 mol %.
2. The device of claim 1 , wherein the substrate includes a dopant, wherein the dopant is selected from a group consisting of Co, Ni, Cu, Se, Bi, Cr, V, Fe, and Mn.
3. The device of claim 2 , wherein the dopant is Co.
4. The device of claim 1 , wherein the substrate is substantially opaque in the ultraviolet A wavelength range of 315 nm to 400 nm.
5. The device of claim 4 , wherein the substrate is substantially opaque in the ultraviolet B wavelength range of 280 nm to 315 nm.
6. The device of claim 5 , wherein the substrate is substantially opaque in the ultraviolet C wavelength range of 100 nm to 280 nm.
7. An apparatus, comprising:
an optical device located behind a panel of glass or glass-ceramic, wherein the glass-ceramic includes about 0.1% to about 50% by weight crystalline phase;
the panel comprising an unbleached region having an average optical absorbance of 1.0 OD/mm or greater over the near infrared (NIR) wavelength range of 700 nm to 2000 nm and a bleached discrete region comprising at least partially dissolved or altered crystalline phase, the bleached discrete region having an average optical absorbance of 0.5 OD/mm or less over the near infrared (NIR) wavelength range of 700 nm to 2000 nm; and
wherein the panel is substantially opaque in the visible wavelength range of 400 nm to 700 nm and the unbleached region exhibits an average absorbance of 1.0 OD/mm or greater in the visible wavelength range of 400 nm to 700 nm;
wherein the bleached discrete region of the panel is located adjacent to the optical device;
wherein the panel includes a modifiable crystalline phase consisting of an oxide or sub-oxide comprising tungsten and/or molybdenum that may be doped with any combination of: Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Ra, Ti, Zn, Se, Nb, Ru, Rh, In, Sn, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein this modifiable component amount is about 0.35 mol % to about 30 mol %.
8. The apparatus of claim 7 , wherein the optical device includes a near infrared (NIR) optical detector.
9. The apparatus of claim 7 , wherein the optical device includes a near infrared (NIR) light source.
10. The apparatus of claim 9 , wherein the optical device includes a near infrared (NIR) camera.
11. The apparatus of claim 7 , wherein the bleached discrete region includes a plurality of bleached discrete regions, each region oriented at an angle with respect to a direction normal to a major surface of the panel.
12. The apparatus of claim 7 , wherein the panel include a plurality of layers, wherein two or more layer each include a plurality of bleached discrete regions, each region oriented at an angle with respect to a direction normal to a major surface of the panel.
13. The apparatus of claim 12 , wherein the plurality of layers includes one or more layers having a different coefficient of thermal expansion (CTE) from an adjacent layer of the plurality of layers.
14. The apparatus of claim 7 , wherein the panel includes a curved major surface.
15. A concealed near infrared (NIR) optical device,
an NIR camera located behind a panel of glass or glass-ceramic, wherein the glass-ceramic includes about 0.1% to about 50% by weight crystalline phase;
the panel comprising an unbleached region having an average optical absorbance of 1.0 OD/mm or greater over the near infrared (NIR) wavelength range of 700 nm to 2000 nm and a bleached discrete region comprising at least partially dissolved crystalline phase, the bleached discrete region having an average optical absorbance of 0.5 OD/mm or less over the near infrared (NIR) wavelength range of 700 nm to 2000 nm; and
wherein the panel is substantially opaque in the UV and visible wavelength range of 100 nm to 700 nm and the unbleached region exhibits an average absorbance of 1.0 OD/nm or greater in the visible wavelength range of 400 nm to 700 nm;
wherein the bleached discrete region of the panel is located adjacent to a lens of the NIR camera;
wherein the panel includes a modifiable crystalline phase consisting of an oxide or sub-oxide comprising tungsten and/or molybdenum that may be doped with any combination of: Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Ra, Ti, Zn, Se, Nb, Ru, Rh, In, Sn, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein this modifiable component amount is about 0.35 mol % to about 30 mol %.
16. The concealed near infrared (NIR) optical device of claim 15 , wherein the substrate includes a dopant, wherein the dopant is selected from a group consisting of Co, Ni, Cu, Se, Bi, Cr, V, Fe, and Mn.
17. The concealed near infrared (NIR) optical device of claim 16 , wherein the dopant is Co.