Color sensing for laser decoating
First Claim
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1. An integrated device to remove a coating from a surface, the system comprising:
- a. a laser source to provide a laser pulse;
b. scanning optics to direct the laser pulse along a laser path to a first position on the surface, whereby the laser pulse impinges the first position on the surface thereby ablating a portion of the coating from the first position;
c. one or more light illuminators to provide a light illumination, each light illumination along a light illumination path, the light illumination impinging the first position on the surface;
d. a photosensitive detector to receive light reflected from the surface as a result of the impinging light illumination and to measure the reflected light, wherein the reflected light is directed along a color sensing path, wherein all of the color sensing path is independent of all of the light illumination path; and
e. a waste collection mechanism to collect the ablated portion of the surface.
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Abstract
A coating removal apparatus utilizing a common optics path to provide laser pulses to a coated surface and to direct a light illumination reflected from the coated surface to a photosensitive detector and analyzer. The apparatus is an integrated device including a laser source, a beam splitter, scanning optics, a waste removal apparatus, one or more light illuminators, a photosensitive detector, a comparator, and a control logic circuit. Alternatively, the laser source is external to the integrated device and a fiber optic cable is used to connect the laser source to the integrated device.
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Citations
21 Claims
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1. An integrated device to remove a coating from a surface, the system comprising:
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a. a laser source to provide a laser pulse; b. scanning optics to direct the laser pulse along a laser path to a first position on the surface, whereby the laser pulse impinges the first position on the surface thereby ablating a portion of the coating from the first position; c. one or more light illuminators to provide a light illumination, each light illumination along a light illumination path, the light illumination impinging the first position on the surface; d. a photosensitive detector to receive light reflected from the surface as a result of the impinging light illumination and to measure the reflected light, wherein the reflected light is directed along a color sensing path, wherein all of the color sensing path is independent of all of the light illumination path; and e. a waste collection mechanism to collect the ablated portion of the surface. - View Dependent Claims (2)
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3. A laser-based coating removal system to remove a coating from a surface, the system comprising:
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a. a laser source to provide a laser pulse; b. scanning optics to direct the laser pulse along a laser path to a first position on the surface, whereby the laser pulse impinges the first position on the surface thereby ablating a portion of the coating from the first position; c. one or more light illuminators to provide a light illumination, each light illumination along a light illumination path, the light illumination impinging the first position on the surface via the scanning optics; and d. a photosensitive detector to receive light reflected from the surface as a result of the impinging light illumination and to measure the reflected light, wherein the photosensitive detector receives the reflected light directly from the surface along a color sensing path, wherein all of the color sensing path is independent of all of the light illumination path. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification