Systems and methods for monitoring a melt pool using a dedicated scanning device
First Claim
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1. An additive manufacturing system comprising:
- a laser device configured to generate a laser beam;
a first scanning device configured to selectively direct the laser beam across a powder bed, wherein the laser beam generates a melt pool in the powder bed; and
an optical system comprising;
an optical detector configured to detect electromagnetic radiation generated by the melt pool; and
a second scanning device configured to direct electromagnetic radiation generated by the melt pool to said optical detector, wherein said second scanning device comprises at least one mirror and at least one actuator operatively coupled to said at least one mirror and said at least one mirror is a first mirror, and said first scanning device comprise a second mirror, wherein said first mirror comprises a first reflective coating having a first reflectance spectrum, and said second mirror comprises a second reflective coating having a second reflectance spectrum different from the first reflectance spectrum.
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Abstract
An additive manufacturing system includes a laser device, a first scanning device, and an optical system. The laser device is configured to generate a laser beam, and the first scanning device is configured to selectively direct the laser beam across a powder bed. The laser beam generates a melt pool in the powder bed. The optical system includes an optical detector configured to detect electromagnetic radiation generated by the melt pool, and a second scanning device configured to direct electromagnetic radiation generated by the melt pool to the optical detector.
40 Citations
18 Claims
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1. An additive manufacturing system comprising:
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a laser device configured to generate a laser beam; a first scanning device configured to selectively direct the laser beam across a powder bed, wherein the laser beam generates a melt pool in the powder bed; and an optical system comprising; an optical detector configured to detect electromagnetic radiation generated by the melt pool; and a second scanning device configured to direct electromagnetic radiation generated by the melt pool to said optical detector, wherein said second scanning device comprises at least one mirror and at least one actuator operatively coupled to said at least one mirror and said at least one mirror is a first mirror, and said first scanning device comprise a second mirror, wherein said first mirror comprises a first reflective coating having a first reflectance spectrum, and said second mirror comprises a second reflective coating having a second reflectance spectrum different from the first reflectance spectrum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An additive manufacturing system comprising:
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a laser device configured to generate a laser beam; a first scanning device configured to selectively direct the laser beam across a powder bed, wherein the laser beam generates a melt pool in the powder bed; and an optical system comprising; an optical detector configured to detect electromagnetic radiation generated by the melt pool; and a second scanning device configured to direct electromagnetic radiation generated by the melt pool to said optical detector, wherein said second scanning device comprises at least one mirror and at least one actuator operatively coupled to said at least one mirror, wherein said at least one mirror is a first mirror, and said first scanning device comprises a second mirror, wherein said first mirror comprises a first reflective coating having a first reflectance spectrum, and said second mirror comprises a second reflective coating having a second reflectance spectrum different from the first reflectance spectrum, wherein the first reflective spectrum corresponds to a wavelength of electromagnetic radiation detectable by said optical detector, and the second reflective spectrum corresponds to a wavelength of the laser beam. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification