Abstract:
An optical characteristic measuring apparatus and an optical characteristic measuring method of the invention are an optical characteristic measuring apparatus and method for obtaining a predetermined optical characteristic such as a color value or a total spectral radiation factor of a measurement object. A spectral intensity distribution of predetermined ambient light entering through a measurement opening is measured and stored prior to measurement of the optical characteristic. In measuring the optical characteristic, an optical characteristic in a condition that actually measured ambient light is used as an observation light source is obtained, with use of the stored spectral intensity distribution of ambient light.
Abstract:
A spectral characteristic acquiring apparatus (10) is provided which includes: an area dividing part; a spectrum separating part; a light receiving part (16); and a calculating part (17), wherein the calculating part includes a transformation matrix storing part (17a) that stores a transformation matrix used for calculating the spectral characteristic corresponding to electrical signals of a first diffraction pattern group including two or more adjacent diffraction patterns, and a spectral characteristic calculating part (17b) that calculates, based on the electrical signals of the first diffraction pattern group and the corresponding transformation matrix, the spectral characteristic at the locations of the image carrying medium corresponding to the apertures of the first diffraction pattern group.
Abstract:
Color measurement instrument (10) including an integrating sphere (12), a beam splitter (16), a video camera (18), and a spectrograph (20). The beam splitter (16) is aligned with the viewing port (32) of the spectrophotometer to deliver the light reflected from the sample (S) to both the video camera (18) and the spectrograph (20). The video camera (18) provides an image of the position of the sample (S) with respect to the viewing port (32) of the sphere (12), enabling the visual observation and evaluation of the sample position prior to use of the spectrophotometer.
Abstract:
The invention relates to a grating optical sensor comprised of a lens (1) that reproduces an object space, of a diffractive hexagonal 3D grating optical modulator (4) in the image plane (5) of the lens (1), of a photoelectric receiver device (8), which is arranged in the near field behind the modulator (4) in accordance with the centrosymmetrically trichromatic diffraction orders (R, G, B), and of an evaluation device for the electrical signals generated by the individual receivers (8). The invention is characterized in that at least one light diffusion glass (9) is arranged in the pupillary plane of the lens (1) or in a pupillary plane conjugate thereto. The inventive sensor is used for conducting chromatometries with a color constancy performance via a thermal radiation source (17), which modifies the grating constants of the 3D grating (4) for a new white standard value.
Abstract:
Eine Messvorrichtung besteht aus einem optischen Messkopf (H) zur Erfassung des vom Messobjekt ausgehenden zu messenden Lichts, einem optisch mit dem Messkopf verbundenen Spektrometer (S), welches Spektrometer einen fotoelektrischen Wandler (4) aufweist, einem Analog/Digital-Wandler (11) zur Umwandlung der erzeugten analogen elektrischen Signale in entsprechende digitale Messdaten, einem Rechner (10) zur Steuerung des fotoelektrischen Wandlers und des Analog/Digital-Wandlers, einer bi-direktionalen Schnittstelle (5) zur Verbindung des Rechners mit einem externen Rechner (C), wobei Messvorgänge durch den externen Rechner veranlasst und die dabei erzeugten digitalen Messdaten über die Schnittstelle (5) zum externen Rechner übertragen werden können. Die Schnittstelle ist eine USB- oder Fire Wire-Schnittstelle (5) und die Stromversorgung sämtlicher elektrischen Komponenten (2,4,E) der Messvorrichtung erfolgt über die Schnittstelle. Dazu ist eine mit der Schnittstelle verbundenen Stromversorgungsschaltung (100) vorgesehen, welche aus der über die Schnittstelle (5) vom externen Rechner (C) zugeführten Versorgungsspannung die für die einzelnen elektrischen Komponenten (2,4,E) der Messvorrichtung erforderlichen Versorgungsspannungen erzeugt.
Abstract:
The present invention has the object to provide a light detecting system whose performance of division light into spectrum components is precise and trustworthy. A light detecting system, comprising a light source for illuminating an object by white light, a slit (1) through which reflected light generated by illuminating object passes through, a prism (2) for dividing the light passing through the slit into spectrum components, light receive equipment (3) for receiving the spectrum components divided by the prism, a normalizing circuit for normalizing the outputs of a plurality of the light receiving equipment within the predetermined range, and an integrator (6) for integrating the output of the normalizing circuit.