BAND-PASS FILTER

PROBLEM TO BE SOLVED: To provide a band-pass filter having a filter property where light in a visible light region is surely shielded, only light in a near-infrared region is transmitted, and rising of transmissivity in a near-infrared region is steep.SOLUTION: A band-pass filter for transmitting on...

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Bibliographic Details
Main Authors YAMAGATA SHINTARO, FUJIMOTO HIDETOSHI
Format Patent
LanguageEnglish
Japanese
Published 22.10.2015
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
BASIC ELECTRIC ELEMENTS
CINEMATOGRAPHY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
SEMICONDUCTOR DEVICES
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Summary:PROBLEM TO BE SOLVED: To provide a band-pass filter having a filter property where light in a visible light region is surely shielded, only light in a near-infrared region is transmitted, and rising of transmissivity in a near-infrared region is steep.SOLUTION: A band-pass filter for transmitting only light in a design area designed in advance in a near-infrared region includes a transmission multilayer film 30 and a shading multilayer film 40 disposed on a translucent substrate 20. 【課題】可視光領域の光を確実に遮光し、近赤外領域の光のみを透過させるとともに、近赤外領域における透過率の立ち上がりが急峻であるフィルタ特性を有するバンドパスフィルタを提供する。【解決手段】近赤外領域において予め設計した設計領域のみの光を透過させるバンドパスフィルタであって、透光性基板２０に、透過多層膜３０と、遮光多層膜４０と、が備えられている。【選択図】図１
Bibliography:Application Number: JP20140063439