Method for eradicating pathogens
AssigneeSchott AG
InventorsMalte Grimm, Rainer Eichholz, Josef Rasp, Andre Petershans, Klaus Megges, Susanne Krüger, Thomas Pfeiffer
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Abstract
A glass has a transmittance at a wavelength of 220 nm of at least 30% and a transmittance at a wavelength of 200 nm of less than 4.0%, the glass having a total platinum content of less than 3.5 ppm. A device and a sterilizer include a light source configured to output ultraviolet light and a lamp cover covering the light source and including the glass.
Claims22
A glass having a transmittance at a wavelength of 220 nm of at least 30% and a transmittance at a wavelength of 200 nm of less than 4.0%, the glass having a total platinum content of less than 3.5 ppm, wherein the glass comprises the following components in the indicated amounts (in mol %):
- Component
- Content [mol %]
- SiO2
- 70 to 80
- Al2O3
- 0.5 to 4.5
- B2O3
- 1.5 to 2.0
- Li2O
- 0 to 2
- Na2O
- 4 to 10
- K2O
- 4 to 8
- CaO
- 0 to 1
- SrO
- 0 to 0.5
- BaO
- 1.5 to 4
- F−
- 0 to 2.
A device, comprising:
- a light source configured to output ultraviolet (UV) light;
- and
- a lamp cover covering the light source, the lamp cover comprising a glass having a transmittance at a wavelength of 220 nm of at least 30% and a transmittance at a wavelength of 200 nm of less than 4.0%, the glass having a total platinum content of less than 3.5 ppm, wherein the glass comprises the following components in the indicated amounts (in mol %):
- Component
- Content [mol %]
- SiO2
- 70 to 80
- Al2O3
- 0.5 to 4.5
- B2O3
- 1.5 to 2.0
- Li2O
- 0 to 2
- Na2O
- 4 to 10
- K2O
- 4 to 8
- CaO
- 0 to 1
- SrO
- 0 to 0.5
- BaO
- 1.5 to 4
- F−
- 0 to 2.
A sterilizer, comprising:
- a light source configured to output ultraviolet (UV) light at a wavelength of 222 nm;
- and
- a lamp cover covering the light source, the lamp cover comprising a glass having a transmittance at a wavelength of 220 nm of at least 30% and a transmittance at a wavelength of 200 nm of less than 4.0%, the glass having a total platinum content of less than 3.5 ppm, wherein the glass comprises the following components in the indicated amounts (in mol %):
- Component
- Content [mol %]
- SiO2
- 70 to 80
- Al2O3
- 0.5 to 4.5
- B2O3
- 1.5 to 2.0
- Li2O
- 0 to 2
- Na2O
- 4 to 10
- K2O
- 4 to 8
- CaO
- 0 to 1
- SrO
- 0 to 0.5
- BaO
- 1.5 to 4
- F−
- 0 to 2.
Dependencies are inferred from the claim text.