US 11,940,351 B2
Borescope that processes image data into 3-d data for optically inspecting gas turbines
Jan Oke Peters, Hamburg (DE); Michael Thies, Hamburg (DE); Sven Rasche, Hamburg (DE); Tomas Domaschke, Hamburg (DE); Thorsten Schueppstuhl, Hamburg (DE); Werner Neddermeyer, Echternach (LU); and Soenke Bahr, Darmstadt (DE)
Assigned to LUFTHANSA TECHNIK AG, Hamburg (DE)
Appl. No. 17/422,210
Filed by Lufthansa Technik AG, Hamburg (DE)
PCT Filed Jan. 14, 2020, PCT No. PCT/EP2020/000008
§ 371(c)(1), (2) Date Jul. 12, 2021,
PCT Pub. No. WO2020/148084, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 10 2019 100 821.2 (DE), filed on Jan. 14, 2019.
Prior Publication US 2022/0082473 A1, Mar. 17, 2022
Int. Cl. G01M 15/14 (2006.01); F01D 21/00 (2006.01); G01N 21/954 (2006.01); G02B 23/24 (2006.01)
CPC G01M 15/14 (2013.01) [F01D 21/003 (2013.01); G01N 21/954 (2013.01); G02B 23/2492 (2013.01); F05D 2220/323 (2013.01); F05D 2260/80 (2013.01); F05D 2260/83 (2013.01); G01N 2021/9544 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A borescope for optically inspecting gas turbines of aircraft engines, the borescope comprising:
an electronic image capture unit as a borescope objective at an end of a shaft, which is suitable for insertion into a borescope opening and configured for accurate positioning of the borescope objective relative to the borescope opening and through which data lines and supply lines for the image capture unit are guided,
wherein the image capture unit comprises:
two spaced apart image capture sensors, recording cones of which overlap in a specified recording plane forming a recording region, in such a way that image data of the two image capture sensors are configured to be processed into 3-D data by way of triangulations, and
an integrated circuit configured to preprocess the data generated by the two spaced apart image capture sensors in order to reduce the data to be transported via the data lines, and
wherein the integrated circuit is configured to process image data recorded simultaneously by the two spaced apart image capture sensors to form the 3-D data with the aid of triangulation.