PROBLEM TO BE SOLVED: To provide a biological information detector and the like, for improving detection accuracy.SOLUTION: The biological information detector includes: a light-emitting part 14 for emitting light in an emission wavelength band (&lambda01 to &lambda02) that includes a wavelength of interest (&lambda0) a light-receiving part 16 for receiving light R1 having biological information a reflecting part 18 for reflecting the light R1, having the biological information, to the light-receiving part 16 at a reflecting surface 18-1 and a filter 19-1, provided between a portion to be detected and the light-receiving part 16 and for transmitting the wavelength of interest (&lambda0). When an angle of incidence &theta of incident light to the filter 19-1 is a predetermined angle, a maximum wavelength (&lambda21) of incident light passing through the filter 19-1 is higher than the wavelength of interest (&lambda0). The filter 19-1 inhibits light in a wavelength band from a maximum wavelength (&lambda21) of incident light to at least a maximum wavelength (&lambdamax) in a light-reception wavelength band, and the reflecting surface 18-1 is configured so that only light having the angle of incidence &theta that is equal to or smaller than the predetermined angle reaches the light-receiving part 16.COPYRIGHT: (C)2012,JPO&INPIT【課題】 検出精度を向上可能な生体情報検出器等を提供する。【解決手段】 生体情報検出器は、関心波長(λ0)を含む発光波長帯域(λ01~λ02)の光を発する発光部14と、生体情報を有する光R1’を受ける受光部16と、生体情報を有する光R1’を反射面18-1で受光部16に反射させる反射部18と、被検出部位と受光部16との間に設けれ、関心波長(λ0)を透過させるフィルター19-1と、を含む。フィルター19-1への入射光の入射角θが所与の角度である時に、フィルター19-1を通過する入射光の最大波長(λ21)は、関心波長(λ0)よりも高く、フィルター19-1は、入射光の最大波長(λ21)から少なくとも受光波長帯域の最大波長(λmax)までの波長帯域の光を抑制する。所与の角度以下の入射角θを持つ光のみが受光部16に到達するように、反射面18-1が構成される。【選択図】 図1
