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Biological information acquisition device and electronic device

  • US 10,265,003 B2
  • Filed: 08/05/2015
  • Issued: 04/23/2019
  • Est. Priority Date: 08/26/2014
  • Status: Active Grant
First Claim
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1. A biological information acquisition device comprising:

  • a first infrared light source that emits infrared light having a peak wavelength λ

    1;

    a second infrared light source that emits infrared light having a peak wavelength λ

    2 different from the peak wavelength λ

    1;

    a light source substrate having a front surface and a back surface, one of the first infrared light source and the second infrared light source being disposed on the front surface of the light source substrate and the other one of the first infrared light source and the second infrared light source being disposed with respect to the light source substrate;

    a light receiving portion that receives infrared light emitted by the first infrared light source or the second infrared light source; and

    a light receiving portion substrate having a front surface and a back surface, the light receiving portion being disposed on the front surface of the light receiving portion substrate,the light source substrate and the light receiving portion substrate being stacked with each other, with the back surface of the light source substrate and the front surface of the light receiving portion substrate facing each other, andthe light receiving portion being disposed on a side opposite to a direction in which infrared light is emitted by the first infrared light source or the second infrared light source.

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