Device and method for recording images
AssigneeFoss Analytical AB
InventorsErland Leide, Nils Wihlborg, Håkan Wedelsbäck, Tomas Jonasson, Roger Ylikangas
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Abstract
A method for recording images of small particles to detect cracking includes feeding particle samples to a place for image recording, illumination a particle sample from at least two directions simultaneously, the illumination occurring with different light wavelengths for each direction, recording partial images of the illuminated particle in different channels, which are sensitive to different wavelengths, and comparing the different partial images to analyze the particle sample. Each partial image shows the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths.
Claims27
A method for recording images of small particles, to analyze the quality of the particles, especially to detect any cracking in the particles, said method comprising the steps of
- feeding particle samples which each comprise at least one particle, to a
- place for recording an image,
- illuminating a particle sample from at least two directions simultaneously, the illumination occurring with different light wavelength for each direction,
- recording an image of the illuminated particle sample with the aid of an image-recording means, which records partial images of the particle sample in different channels, which are sensitive to different wavelengths, and
- comparing the different partial images for analysis of the particle sample, each partial image showing the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths.
A method for recording images of small particles, to analyze the quality of the particles, especially to detect any cracking in the particles, said method comprising the steps of:
- feeding particle samples which each comprise at least one particle, to a place for recording an image,
- illuminating a particle sample from at least two directions simultaneously, the illumination occurring with different light wavelength for each direction,
- recording an image of the illuminated particle sample with the aid of an image-recording means, which records partial images of the particle sample in different channels, which are sensitive to different wavelengths, and
- comparing the different partial images for analysis of the particle sample, each partial image showing the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths, wherein the step of comparing the different partial images comprises the, step of subtracting the partial image from a first channel from the partial image from a second channel.
A device for recording images of small particles, to analyze the quality of the particles, especially to detect any cracking in the particles, said device comprising a carrier which feeds particle samples which each comprise at least one particle, to a place for image recording,
- at least two illuminating means which are adapted to simultaneously illuminate a particle sample with different light wavelength and from different directions,
- an image-recording means which records an image of the illuminated particle sample, the image-recording means recording partial images of the particle sample in different channels which are sensitive to different wavelengths, and
- an analyzing means for comparing the different partial images for analysis of the particle sample, each partial image showing the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths.
A method for recording images of small particles, to analyze the quality of the particles, especially to detect any cracking in the particles, said method comprising the steps of:
- feeding particle samples which each comprise at least one particle, to a place for recording an image,
- illuminating a particle sample from at least two directions simultaneously, the illumination occurring with different light wavelength for each direction,
- recording an image of the illuminated particle sample with the aid of an image-recording means, which records partial images of the particle sample in different channels, which are sensitive to different wavelengths, and
- comparing the different partial images for analysis of the particle sample, each partial image showing the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths, wherein the analyzing means is adapted to subtract the partial image from a first channel from the partial image from a second channel.
Dependencies are inferred from the claim text.