US 12,240,039 B2
Systems and methods for measuring radiation emitted during a three-dimensional printing process
Eric Peter Goodwin, Oro Valley, AZ (US)
Assigned to NIKON CORPORATION, Tokyo (JP)
Filed by Nikon Corporation, Tokyo (JP)
Filed on Apr. 29, 2021, as Appl. No. 17/244,764.
Prior Publication US 2022/0347751 A1, Nov. 3, 2022
Int. Cl. B22F 10/368 (2021.01); B22F 10/28 (2021.01); B22F 10/80 (2021.01); B22F 12/30 (2021.01); B22F 12/41 (2021.01); B22F 12/90 (2021.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/00 (2015.01); B22F 10/85 (2021.01)
CPC B22F 10/368 (2021.01) [B22F 10/28 (2021.01); B22F 10/80 (2021.01); B22F 12/30 (2021.01); B22F 12/41 (2021.01); B22F 12/90 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/00 (2014.12)] 27 Claims
OG exemplary drawing
 
1. A system comprising:
a closed container;
a three-dimensional (3D) printing melt platform located within the closed container and configured to support the production of a 3D printed component during a 3D printing process;
an energy source configured to direct energy to the 3D printing melt platform during the 3D printing process;
an optical access port coupled to a wall of the closed container and configured to receive light caused by the energy from the energy source, the light comprising a plurality of wavelengths;
a first lens configured to receive the light comprising the plurality of wavelengths from the optical access port;
a field stop located substantially near an image plane of the first lens and configured to receive the light comprising the plurality of wavelengths from the first lens;
a second lens configured to receive the light comprising the plurality of wavelengths from the field stop;
a wavelength separator configured to receive the light comprising the plurality of wavelengths from the second lens and to spatially separate the plurality of wavelengths; and
an optical detector comprising a plurality of pixels, each pixel configured to receive a wavelength of the plurality of wavelengths.