Abstract:
PROBLEM TO BE SOLVED: To provide a spectrum measurement device that allows a wavelength spectrum of reflection light from an object to be stably measured with high accuracy.SOLUTION: A spectrum measurement device 10 comprises: a light source unit 11 that irradiates a recording paper P with light; an aperture element 13 that is arranged on an optical path of reflection light from the recording paper P and provided with a plurality of apertures; a diffraction element 15 that is arranged on optical paths of a plurality of pieces of light which, out of the reflection light, have passed through a plurality of apertures; a mask element 17 that includes a plurality of passage parts allowing a plurality of +1-order diffraction images, out of a plurality of diffraction images of the plurality of pieces of light formed by the diffraction element 15, to individually pass through, and a light shield part shielding diffraction images in orders other than +1-order; and a linear sensor 16 that includes a plurality of spectrum sensors individually receiving the plurality of +1-order diffraction images passing through the plurality of passage parts.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical sensor that suppresses a reduction in spectral characteristics, and further to provide an electronic apparatus and the like.SOLUTION: An optical sensor includes: a light receiving element; an optical filter 140 for transmitting light having a specific wavelength out of incident light to a light receiving region of the light receiving element therethrough; and an angle limiting filter 120 for limiting an incident angle of the incident light having passed through the optical filter 140. When a limited angle of the angle limiting filter 120 is denoted by θA, a height from an upper face of the angle limiting filter 120 to an upper face of the optical filter 140 is denoted by RTP and a distance from an edge of the optical filter 140 to an edge of an opening of the angle limiting filter 120 is denoted by an overlap distance OV in a plan view with respect to the upper face of the angle limiting filter 120, θA, RTP and OV satisfy an expression of tan(OV/RTV)>θA.
Abstract:
A method and apparatus for the noninvasive detection of a concentration of a substance in a body, such as glucose in the human bloodstream is disclosed. The apparatus measures substance concentration by detecting radiation in the far infrared range emitted by the body using an infrared detected in combination with a set of adequate filters. In order to achieve the accuracy required, the radiation values detected by the detector are corrected for the emissions of the system components. The temperature of each system component including the detector temperature and an ambient temperate is determined using temperature sensors attached to the various system components. These temperatures are correlated with a set of predetermined calibration parameters to correct the detector readings.
Abstract:
PROBLEM TO BE SOLVED: To provide a spectral characteristics measuring method and a spectral characteristics measuring apparatus that enable spectral characteristics of light to be measured in a short period of time and with high accuracy.SOLUTION: A spectral characteristics measuring method comprises a step of bringing into incidence on a spectrometer having detection sensitivity in a first wavelength range light whose wavelength range is a second wavelength range, which is part of the first wavelength range; a step of acquiring characteristics information indicating stray light components from a part corresponding to a range other than the second wavelength range out of a first spectrum detected by the spectrometer; and a step of acquiring a pattern representing stray light components arising in the spectrometer by extrapolating the characteristics information up to the second wavelength range out of the first wavelength range.
Abstract:
An image processing system is used for dentistry. Upon creating a false tooth of a patient (59), a plurality of illuminating light of LEDs with different wavelengths emit light and a photographing apparatus (1A) photographs a tooth portion of the patient (59), thereby obtaining image data. The image data is sent to a dentistry filing system (2A) serving as a processing apparatus, and color reproducing data is obtained by calculation. The color reproducing data is sent to a dentistry factory (55) via a public line. Data is searched from a database (56) for calculating a ceramic compounding ratio, compound data of the ceramic false tooth is obtained, matching the color of the tooth portion of the patient (59), and the false tooth approximate to the tooth color of the patient (59) is created. The photographing apparatus has a control unit (18) which switches between a spectroscopic image capturing mode and a moving image capturing mode.
Abstract:
PROBLEM TO BE SOLVED: To provide a spectral module capable of high-accuracy detecting a light of over a wide wavelength range, or a light in a different wavelength range, while preventing enlargement of the module.SOLUTION: The spectral module 1 includes a spectral section 8 and an optical detection element 9, in addition to a spectral section 7 and an optical detector 4, thus enhancing the detection sensitivity for the light over a wide wavelength range or the light in the different wavelength range. Moreover, a light-transmitting hole 4b is provided between an optical detector 4a and an optical detector 9a and a reflector 6 is provided so as to face a range R of a substrate 2 having optical absorption to prevent the enlargement. In addition, a stray light Lis absorbed in the range R of the substrate 2; and even if a part of the stray light Lpasses through the range R of the substrate 2, that portion of the light is reflected toward the range R by the reflector 6 provided to face the range R, thus suppressing generation of stray lights due to the incidence of the external disturbance light L.
Abstract:
PROBLEM TO BE SOLVED: To provide a spectroscopic sensor, along with an electronic apparatus or the like, capable of being miniaturized. SOLUTION: A spectroscopic sensor device includes a light source 110, and a spectroscopic sensor 100 upon which light acquired by irradiating an observation object with light from the light source 110 is incident. The spectroscopic sensor 100 includes a plurality of optical bandpass filters 61-64 whose transmittable wavelength are different, and a plurality of photosensors 31-34. The first optical bandpass filter 61 has a wavelength characteristic capable of transmitting a first specific wavelength, and the second optical bandpass filter 62 has a wavelength characteristic capable of transmitting a second specific wavelength different from the first specific wavelength. The first photosensor 31 senses light of the first specific wavelength transmitted through the first optical bandpass filter, and the second photosensor senses light of the second specific wavelength transmitted through the second optical bandpass filter. COPYRIGHT: (C)2011,JPO&INPIT