Spectroscopic sensor device and electronic equipment
AssigneeSeiko Epson Corporation
InventorsAkira Uematsu, Yoichi Sato, Akira Komatsu, Kunihiko Yano
Life of this patent
Estimating the term…
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.
Claims18
A pulsimeter comprising:
- a light source unit that transmits light to a body of a user;
- and
- a spectroscopic sensor that receives incident light from the light source unit reflected from or transmitted through the body of the user,
- the spectroscopic sensor including:
- a photosensor that has an impurity area formed on a semiconductor substrate, and
- an angle limiting filter that includes a plurality of light blocking materials which have electrical conductivity, at least one of the light blocking materials being disposed directly on and contacting the impurity area.
A spectroscopic sensor comprising:
- a light source unit that transmits light to a body of a user;
- and
- a photo sensor that detects incident light from the light source unit reflected from or transmitted through the body of the user,
- the photo sensor comprising:
- an impurity area formed on a semiconductor substrate, and
- an angle limiting filter that is formed by a plurality of light blocking materials which have electrical conductivity, at least one of the light blocking materials being disposed directly on and contacting the impurity area.
Dependencies are inferred from the claim text.