The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Nov. 22, 2021
Shikoh Tech Co., Ltd., Awaji, JP;
Tsutae Shinoda, Akashi, JP;
Hitoshi Hirakawa, Takasago, JP;
Kenji Awamoto, Miki, JP;
Takefumi Hidaka, Kobe, JP;
Junichiro Takahashi, Nishinomiya, JP;
Tetsuya Makino, Kakogawa, JP;
Masayuki Wakitani, Akashi, JP;
Yoko Shinoda, Akashi, JP;
SHIKOH TECH CO., LTD., Awaji, JP;
Abstract
The present invention provides a deep ultraviolet radiation apparatus that is safe and has a high bacteria eliminating effect. The ultraviolet radiation apparatus comprises an optical filter that prevents the transmission of ultraviolet light of 240 nm or more emitted from a phosphor, wherein the optical filter is arranged facing light emitting surfaces of a gas-discharging tube array-type surface-emitting ultraviolet light source device comprising phosphor layer having a broad emission spectrum with a wavelength width of at least 210 nm to 250 nm with a peak wavelength of 228 nm. Light irradiated from the light source device is incident on a filter membrane with an incident angle thereof being altered by a transparent substrate of the optical filter. An ozone generation space may be formed between the surface-emitting ultraviolet light source device and the optical filter.