PANASONIC IP MANAGEMENT CORP;パナソニックIPマネジメント株式会社;パナソニックＩＰマネジメント株式会社
发明人:
NISHIMORI TAISUKE,西森 泰輔
申请号：
JP2017033947
公开号：
JP2018138144A
申请日:
2017.02.24
申请国别(地区):
JP
年份:
2018
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide an optical filter capable of supporting detection of biological information with high accuracy.SOLUTION: An optical filter 21 is provided in which a plurality of filter areas 250 are arranged in an array condition and which comprises a first BPF (Band-Pass Filter ) 212 and a second BPF 213. In the optical filter 21, a transmission area of the first BPF 212 includes a wavelength in which an absorption coefficient by oxyhemoglobin (Hb) is higher than that by oxidation hemoglobin (HbO2), a transmission area of the second BPF 213 includes a wavelength in which an absorption coefficient by the Hb is lower than that by the HbO2, a transmission area where transmission areas of the first and second BPFs 212, 213 overlap each other includes a wavelength in which the absorption coefficients of the Hb and of HbO2 are same, and the plurality of filter areas 250 include a first filter area 251 where only the first BPF 212 is provided, a second filter area 252 where only the second BPF 213 is provided, and a third filter area 253 where both of the first BPF 212 and the second BPF 213 overlap each other, an area of the first filter area 251 is larger than an area of the second filter area 252.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】生体情報の高精度な検出を支援できる光学フィルタを提供する。【解決手段】複数のフィルタ領域２５０がアレイ状に配列された光学フィルタ２１は、第１ＢＰＦ２１２と、第２ＢＰＦ２１３とを備え、第１ＢＰＦ２１２の透過帯域は、還元ヘモグロビン（Ｈｂ）による吸光係数が酸化ヘモグロビン（ＨｂＯ２）より高い波長を含み、第２ＢＰＦ２１３の透過帯域は、Ｈｂによる吸光係数がＨｂＯ２より低い波長を含み、第１ＢＰＦ２１２及び第２ＢＰＦ２１３で重複する透過帯域は、吸光係数がＨｂとＨｂＯ２とで同じになる波長を含み、複数のフィルタ領域２５０には、第１ＢＰＦ２１２のみが設けられた第１フィルタ領域２５１と、第２ＢＰＦ２１３のみが設けられた第２フィルタ領域２５２と、第１ＢＰＦ２１２及び第２ＢＰＦ２１３の両方が重なった第３フィルタ領域２５３とが含まれ、第１フィルタ領域２５１の面積は、第２フィルタ領域２５２の面積より大きい。【選択図】図４
