JP2022082620A5

JP2022082620A5 -

Info

Publication number: JP2022082620A5
Application number: JP2022046393A
Authority: JP
Filing date: 2022-03-23
Publication date: 2024-01-25

Description

［拡散部材］
図４は、紫外光照射装置１０の、ＸＺ平面における断面模式図である。本実施形態の紫外光照射装置１０では、取出し部４を構成する開口に、紫外光を拡散させる拡散部材５と光学フィルタ６とが配置されている。なお、「取出し部に配置」とは、拡散部材５又は光学フィルタ６が光取出し面に対して完全に一体化されて配置されている場合の他、拡散部材５又は光学フィルタ６が光取り出し面に対してＸ方向に微小な距離（例えば数ｍｍから十数ｍｍ）だけ離間した位置に配置されている場合を含む。 [Diffusion member]
FIG. 4 is a schematic cross-sectional view of the ultraviolet light irradiation device 10 in the XZ plane. In the ultraviolet light irradiation device 10 of this embodiment, a diffusion member 5 that diffuses ultraviolet light and an optical filter 6 are arranged in the opening that constitutes the extraction section 4 . Note that "arranged at the extraction section" refers to the case where the diffusion member 5 or the optical filter 6 is arranged completely integrated with the light extraction surface, or the case where the diffusion member 5 or the optical filter 6 is arranged on the light extraction surface. This includes the case where the device is placed at a position spaced apart by a minute distance (for example, several mm to tens of mm) in the X direction.

Claims

a light source that emits ultraviolet light whose main emission wavelength is 190 nm to 235 nm;
a housing that houses the light source;
an extraction unit that extracts the ultraviolet light emitted from the light source to the outside of the casing;
a diffusion member that diffuses the ultraviolet light;
An optical filter that transmits ultraviolet light in a wavelength band of 200 nm to 230 nm and substantially does not transmit ultraviolet light in a wavelength band of less than 200 nm and ultraviolet light in a wavelength band of 240 nm to 300 nm,
An ultraviolet light irradiation device for inactivating microorganisms, wherein the optical filter is located between the light source and the diffusion member .

The ultraviolet light irradiation device according to claim 1 , further comprising a reflecting member inside the housing that reflects the light emitted from the light source.

3. The ultraviolet light irradiation device according to claim 1, wherein the diffusion member is made of a material mainly consisting of quartz glass, fluororesin, polyethylene, or PET.

The ultraviolet light irradiation device according to any one of claims 1 to 3 is arranged so that at least a part of the emitted ultraviolet light is irradiated toward a manned space, and the ultraviolet light irradiation device is provided with the ultraviolet light. How to use an ultraviolet light irradiation device to irradiate light.