Abstract:
An image-sensing apparatus (10) of the type employing resolving and sensing means is provided with sensors (30) of selected size and geometry to allow approximation of desired response. The sensors may be incorporated into compact, self-contained image-resolving and-sensing apparatus having a transparent substrate (12) for resolving an incident image by refraction, diffraction or other suitable mechanism. The sensors may be located directly on a surface (14) of the substrate. Logic and select circuitry (20) may be integrally and simultaneously formed with the sensors. The size and geometry of the sensors may enable approximation to color inhibition and other effects to allow approximation to the spectral response of the human eye.
Abstract:
An image-sensing apparatus (10) of the type employing resolving and sensing means is provided with sensors (30) of selected size and geometry to allow approximation of desired response. The sensors may be incorporated into compact, self-contained image-resolving and-sensing apparatus having a transparent substrate (12) for resolving an incident image by refraction, diffraction or other suitable mechanism. The sensors may be located directly on a surface (14) of the substrate. Logic and select circuitry (20) may be integrally and simultaneously formed with the sensors. The size and geometry of the sensors may enable approximation to color inhibition and other effects to allow approximation to the spectral response of the human eye.
Abstract:
A colorimeter provides compensation for changes in the color signature of an object due to lamp aging, stand off distance and view angle changes. The colorimeter senses and stores values indicative of a sample object (5). The colorimeter includes a processor (80) which then creates an average ratio wherein the stored values and corresponding sensed values are placed in a ratio, all of the ratios are then summed, and the total is divided by the number of values. Finally, the processor compares the sensed values with corresponding stored values, wherein one of the two values is adjusted by the average ratio.
Abstract:
A color signature sensor for color recognition or discrimination utilizes a spectral analysis system and may be used in process control or on-line quality assurance. An object (11) to be observed is illuminated by a suitable light source (10), light collected from the object under examination is routed into a monochrometer (16). The output of the monochrometer is fed to an analog-to-digital converter (19) and analyzed by a microprocessor (18).
Abstract:
A color signature sensor for color recognition or discrimination utilizes a spectral analysis system and may be used in process control or on-line quality assurance. An object (11) to be observed is illuminated by a suitable light source (10), light collected from the object under examination is routed into a monochrometer (16). The output of the monochrometer is fed to an analog-to-digital converter (19) and analyzed by a microprocessor (18).
Abstract:
In a real-time color comparator which performs color comparisons of sample objects to a reference color for the purpose of identification, sorting or matching two optical paths (15, 16) are positioned to collect the light from a reference object (12) and a sample object (11). The light outputs from the two paths are directed onto a spectral dispersive element in the form of a concave diffraction grating (20) that decomposes each light signal into its spectral constituents which are imaged on a dual photodetector array (30). The color signature from the reference and the color signature from the sample are compared.
Abstract:
An improved color sensor is provided having two sources of illumination, one source being modulated on and off while the other source remains on. Data taken while the modulated source is on is compared with data taken while the modulated source is off to compute the effective fluorescence of the sample. A corrected color spectrum can then be determined for a defined source.