Title:
紫外線ＬＥＤ用蒸着フィルタ
Document Type and Number:
Japanese Patent JP7388921
Kind Code:
B2
Abstract:
To provide a vapor deposition filter for ultraviolet LED for visible light cutting and ultraviolet-ray transmission that is used for an ultraviolet-ray irradiation device used in an ultraviolet-ray flaw detection test and emitting ultraviolet rays, the vapor-deposition filter for ultraviolet LED providing an ultraviolet-ray irradiation device that embodies high ultraviolet-ray radiation illuminance in an irradiation region and improving precision of ultraviolet-ray flaw detection.SOLUTION: A vapor-deposition filter 1 for ultraviolet LED comprises first light-transmissive substrates 10, 20, and while the first light-transmissive substrate 10 has vapor-deposition films 11, 12, the second light-transmissive substrate 20 has vapor-deposition films 21, 22. The vapor-deposition films 11,12 and 21, 22 have predetermined light blocking characteristics, and the vapor-deposition film 12 and vapor-deposition film 21 are spaced with a spacer 4 including a sealant at an interval of a separation distance X.SELECTED DRAWING: Figure 3
Inventors:
Kenji Matsumoto
Manabu Hosoya
Yuta Kato
Manabu Hosoya
Yuta Kato
Application Number:
JP2019238807A
Publication Date:
November 29, 2023
Filing Date:
December 27, 2019
Export Citation:
Assignee:
Marktec Co., Ltd.
International Classes:
G02B5/20
Domestic Patent References:
| JP2001154016A | ||||
| JP5341122A | ||||
| JP5094801U | ||||
| JP2018010275A |
Attorney, Agent or Firm:
Satoshi Watanabe