Spectroscopic sensor device and electronic equipment
AssigneeSeiko Epson Corporation
InventorsAkira UEMATSU, Yoichi SATO, Akira KOMATSU, Kunihiko YANO
Life of this patent
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Abstract
A spectroscopic sensor that applies lights in a wavelength band containing plural wavelengths to an object and spectroscopically separates reflected lights or transmitted lights from the object using plural light band-pass filters that transmit the respective specific wavelengths and plural photosensor parts to which corresponding transmitted lights are input based on output results of independent photosensors. The spectroscopic sensor may be integrated in a semiconductor device or module by integration using a semiconductor process and downsizing may be realized.
Claims20
A spectroscopic sensor device comprising:
- a light source unit that applies a light in a wavelength band containing plural wavelengths as targets of detection;
- and
- a spectroscopic sensor to which a light obtained by application of the light from the light source unit to an object of observation enters,
- wherein the spectroscopic sensor has
- plural light band-pass filters having different transmission wavelengths, and
- plural photosensor parts,
- the first light band-pass filter of the plural light band-pass filters has a wavelength characteristic of transmitting a first specific wavelength,
- the second light band-pass filter of the plural light band-pass filters has a wavelength characteristic of transmitting a second specific wavelength different from the first specific wavelength,
- the first photosensor of the plural photosensors senses a light having the first specific wavelength transmitted through the first light band-pass filter, and
- the second photosensor of the plural photosensors senses a light having the second specific wavelength transmitted through the second light band-pass filter.
Dependencies are inferred from the claim text.