OPTICAL FILTER
To provide an optical filter excellent in productivity, and capable of selectively transmitting light of a narrow wavelength region.SOLUTION: An optical filter 1 includes: a glass sheet 2 having a first principal plane 2a and a second principal plane 2b opposing to each other; optical films 3A, 3B e...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide an optical filter excellent in productivity, and capable of selectively transmitting light of a narrow wavelength region.SOLUTION: An optical filter 1 includes: a glass sheet 2 having a first principal plane 2a and a second principal plane 2b opposing to each other; optical films 3A, 3B each having a bandpass filter function, arranged at least on one principal plane of the first principal plane 2a and the second principal plane 2b of the glass sheet 2; and a first bearing member 4A being a pigmented glass having a bandpass filter function, arranged on the first principal plane 2a of the glass sheet 2.SELECTED DRAWING: Figure 1
【課題】より狭い波長域の光を選択的に透過させることができ、生産性に優れる、光学フィルタを提供する。【解決手段】対向している第1の主面2a及び第2の主面2bを有する、ガラスシート2と、ガラスシート2の第1の主面2a及び第2の主面2bのうち少なくとも一方の主面上に設けられており、バンドパスフィルタ機能を有する、光学膜3A,3Bと、ガラスシート2の第1の主面2a上に配置されており、バンドパスフィルタ機能を有する着色ガラスである、第1の支持部材4Aとを備える、光学フィルタ1。【選択図】図1 |
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