Abstract:
An imaging apparatus includes a light source unit that selectively outputs white light and light in a different wavelength band to an observation target, an imaging unit including an imaging device, and a spectral image formation circuit that generates a spectral image signal for a specified wavelength by an operation using an image signal based on an output from the imaging unit and predetermined matrix data. The imaging unit selectively obtains an image of the observation target for each of first, second and third light components in a visible light region and an image for each of at least fourth and fifth light components in a near-infrared region. Further, the imaging unit includes first spectral devices that make only the first and fourth light components enter first pixels of the imaging device and second spectral devices that make only the second and fifth light components enter second pixels thereof.
Abstract:
A method and a system for improving the psychovisual experience of watching a display are presented. Measurements on the ambient light are performed by a sensor element, from which characteristics of the ambient light are derived. These are subsequently applied in a light-source adjustment model to determine the output of the light-source element. Moreover, a method and a system for adjusting the output of a light-source element by a feed-back loop involving the output from the light-source element and the input to a sensor element are revealed. In addition, the sensor element is also employed for adjusting the output of an electronic display by applying the results of the measurements to a preference model.
Abstract:
A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
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.
Abstract:
The invention relates to an illumination device (1) with a number of light emitters, for example LEDs (L1, L2, L3, L4) of individual emission spectra. Sensor units (D1, D2, D3, D4) can produce a vector of measurement signals (S1, S2, S3, S4) that represent the light output of a single active light emitter. Based on a linear relation obtained during a calibration procedure, a characteristic value of the light output of that light emitter (L1, L2, L3, L4) is then calculated from the measurement vector, wherein said characteristic value is based on the coefficients of a decomposition of the individual emission spectrum into basis functions.
Abstract:
A sensor assembly includes a sound sensor, an image sensor, an acceleration sensor, and a gyroscope sensor. The sound sensor includes a substrate defining a first cavity, a diaphragm positioned on the substrate and covering the first cavity, a back plate covering the diaphragm and positioned on the substrate, and a capacitance. A first electrode layer is coated on the diaphragm and faces the first cavity. A second cavity is defined between the diaphragm and the back plate. A second electrode layer is coated on the back plate and faces the second cavity. The capacitance is electrically connected between the first and second electrode layers. The image sensor, the acceleration sensor, and the gyroscope sensor are positioned on the substrate.
Abstract:
A color identifying device includes a mount block, a color detector, a lens and a color identifier. A reactive board having a plurality of surfaces to be measured in respective predetermined positions is mounted in the mount block. The color detector has a plurality of color measuring areas corresponding respectively to the reaction surfaces of the reactive board mounted in the mount block. The lens forms images of the surfaces of the reactive board mounted in the mount block on the respective color measuring areas. The color identifier identifies the colors of the surfaces based on output signals from the corresponding color measuring areas.
Abstract:
In one embodiment, light having a first spectrum is filtered from a mixed light. Light having a second spectrum, different from the first spectrum, is also filtered from the mixed light. An intensity of the light having the first spectrum, and an intensity of the light having the second spectrum, are then sensed. From the sensed intensities of the lights having the first and second spectrums, an intensity of light having a third spectrum is estimated.
Abstract:
Optical characteristic measuring systems and methods such as for determining the color or other optical characteristics of teeth are disclosed. Perimeter receiver fiber optics preferably are spaced apart from a source fiber optic and receive light from the surface of the object/tooth being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics to determine information regarding the height and angle of the probe with respect to the object/tooth being measured. Under processor control, the optical characteristics measurement may be made at a predetermined height and angle. Various color spectral photometer arrangements are disclosed. Translucency, fluorescence, gloss and/or surface texture data also may be obtained. Audio feedback may be provided to guide operator use of the system. The probe may have a removable or shielded tip for contamination prevention. A method of producing dental prostheses based on measured data also is disclosed. Measured data also may be stored and/or organized as part of a patient data base. Such methods and implements may be desirably utilized for purposes of detecting and preventing counterfeiting or the like. Low cost and small form factor spectrometers, and methods for manufacturing the same, also are disclosed. Spectrometers and spectrophotometers embedded in printing and scanning and other type devices, as well as computer companion devices, scope-type devices and the like, also are disclosed. Data encoding based on such devices also may be implemented.
Abstract:
A color density measuring device (10) for determining the color density of an ink layer applied to a printing material (22), having a light source (24) for illuminating the printing material (22) and a sensor for receiving the light remitted from the printing material (22), is characterized according to the invention in that the sensor is fashioned as a multicolor image sensor (12), and a device (14, 24, 26; 30) is provided with the aid of which the light incident at the multicolor image sensor (12) is restricted to at least one predetermined wavelength band.