Imaging devices for use with additive manufacturing systems and methods of imaging a build layer

Patent metadata

Field	Value
Publication number	US-10674101-B2
Application number	US-201715663181-A
Country	US
Kind code	B2
Filing date	Jul 28, 2017
Priority date	Oct 28, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

An imaging device for an additive manufacturing system is provided. The additive manufacturing system includes a material. The imaging device includes a high resolution imaging bar including at least one detector array, and an imaging element positioned between the at least one detector array and the material. The high resolution imaging bar is displaced from the material along a first direction and extends along a second direction. The high resolution imaging bar is configured to generate an image of a build layer within the material.

First claim

What is claimed is:

1. An imaging device for an additive manufacturing system, the additive manufacturing system including a material, said imaging device comprising:
a light source comprising a plurality of LED lights, said plurality of LED lights comprising a first portion of LED lights positioned at a first angle relative to a build layer within the material and a second portion of LED lights comprising a first array positioned at a second angle relative to the build layer and a second array positioned at a third angle relative to the build layer, said plurality of LED lights configured to highlight a contoured shape feature of the build layer, wherein the first angle is a right angle, and wherein the second angle and the third angle are acute angles; and
a high resolution imaging bar displaced from the material along a first direction and extending along a second direction, said high resolution imaging bar comprising a first end and a second end opposite said first end, said light source coupled to said high resolution imaging bar, said first array positioned adjacent said first end and said second array positioned adjacent said second end, wherein said high resolution imaging bar is configured to generate an image of the build layer, said high resolution imaging bar comprising:
at least one detector array;
an imaging element positioned between said at least one detector array and the material.

2. The imaging device in accordance with claim 1 , wherein said high resolution imaging bar is configured to generate the image with a resolution of less than or equal to 50 microns.

3. The imaging device in accordance with claim 1 , wherein said high resolution imaging bar is coupled to a re-coating device and is configured to move along a third direction.

4. The imaging device in accordance with claim 1 , wherein said high resolution imaging bar is configured to generate an image of a component prior to recoating of the component.

5. The imaging device in accordance with claim 1 , wherein said high resolution imaging bar comprises at least one linear detector array.

6. The imaging device in accordance with claim 1 , wherein said imaging element further comprises at least one of a micro lens array and a single lens.

7. An additive manufacturing system comprising:
a material for forming a component; and
an imaging device comprising:
a light source comprising a plurality of LED lights, said plurality of LED lights comprising a first portion of LED lights positioned at a first angle relative to a build layer within the material and a second portion of LED lights comprising a first array positioned at a second angle relative to the build layer and a second array positioned at a third angle relative to the build layer, said plurality of LED lights configured to highlight a contoured shape feature of the build layer, wherein the first angle is a right angle, and wherein the second angle and the third angle are acute angles;
a high resolution imaging bar displaced from the material along a first direction and extending along a second direction, said high resolution imaging bar comprising a first end and a second end opposite said first end, said light source coupled to said high resolution imaging bar, said first array positioned adjacent said first end and said second array positioned adjacent said second end, wherein said high resolution imaging bar is configured to generate an image of the build layer, said high resolution imaging bar comprising:
at least one detector array; and
an imaging element positioned between said at least one detector array and the material.

8. The additive manufacturing system in accordance with claim 7 , wherein said high resolution imaging bar is configured to generate the image with a resolution of less than or equal to 50 microns.

9. The additive manufacturing system in accordance with claim 7 , wherein said high resolution imaging bar is coupled to a re-coating device and is configured to move along a third direction.

10. The additive manufacturing system in accordance with claim 7 , wherein said high resolution imaging bar is configured to generate an image of a component prior to recoating of the component.

11. The additive manufacturing system in accordance with claim 7 , wherein said high resolution imaging bar comprises at least one linear detector array.

12. The additive manufacturing system in accordance with claim 7 , wherein said imaging element further comprises at least one of a micro lens array and a single lens.

13. A method of imaging a build layer of a material within an additive manufacturing system, said method comprising:
positioning an imaging device including a high resolution imaging bar such that the imaging device is displaced from the material in a first direction and extends along a second direction, the high resolution imaging bar including at least one detector array and an imaging element positioned between the at least one detector array and the material, the high resolution imaging bar having a first end and a second end opposite the first end;
lighting the build layer using a light source coupled to the high resolution imaging bar, wherein the light source includes a plurality of LED lights, including a first portion of LED lights positioned at a first angle relative to the build layer and a second portion of LED lights including a first array positioned at a second angle relative to the build layer and a second array positioned at a third angle relative to the build layer, the first array positioned adjacent the first end and the second array positioned adjacent the second end, the plurality of LED lights configured to highlight a contoured shape feature of the build layer, wherein the first angle is a right angle, and wherein the second angle and the third angle are acute angles;
moving the imaging device along a third direction; and
generating an image of the build layer.

14. The method in accordance with claim 13 wherein generating an image comprises generating the image through a fast sampling process.

Assignees

• Gen Electric

Inventors

• Harding Kevin George
• Karp Jason Harris
• Sears James William

Classifications

• C03B19/01

  by progressive fusion {or sintering} of powdered glass onto a shaping substrate, i.e. accretion {, e.g. plasma oxidation deposition (making fibre preforms C03B37/01291)} · CPC title

• G01N2021/8427

  Coatings · CPC title

• H04N1/02865

  using an array of light sources or a combination of such arrays, e.g. an LED bar · CPC title

• B29C64/214 Primary

  Doctor blades · CPC title

• B29C64/205

  Means for applying layers · CPC title