US 12,492,893 B2
Passive alignment of lens module relative to an image sensor for manufacturing a camera module
Ying San Chui, Hong Kong (CN); Kwok Yuen Cheung, Hong Kong (CN); Hei Lam Chang, Hong Kong (CN); Man Wai Chan, Hong Kong (CN); and Po Lam Au, Hong Kong (CN)
Assigned to ASMPT SINGAPORE PTE. LTD., Singapore (SG)
Filed by ASMPT SINGAPORE PTE. LTD., Singapore (SG)
Filed on May 20, 2022, as Appl. No. 17/749,221.
Prior Publication US 2023/0400297 A1, Dec. 14, 2023
Int. Cl. G01B 11/26 (2006.01); G01S 7/497 (2006.01); G01S 17/08 (2006.01); G02B 7/00 (2021.01); G02B 7/02 (2021.01); G02B 27/30 (2006.01); G02B 27/62 (2006.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); G02B 13/16 (2006.01); H04N 23/57 (2023.01)
CPC G01B 11/26 (2013.01) [G01S 17/08 (2013.01); G02B 7/003 (2013.01); G02B 7/005 (2013.01); G02B 7/02 (2013.01); G02B 7/023 (2013.01); G02B 27/30 (2013.01); G02B 27/62 (2013.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); G01S 7/497 (2013.01); G02B 7/004 (2013.01); G02B 7/025 (2013.01); G02B 13/16 (2013.01); H04N 23/57 (2023.01)] 19 Claims
OG exemplary drawing
 
1. A method for manufacturing a camera module by attaching a lens module to an image sensor, the lens module including at least one lens element, the at least one lens element having a plurality of centers of curvature, the method comprising the steps of:
determining a tilt angle of an imaging axis of the image sensor;
determining a tilt angle of an optical axis of the lens module by using an optical device to identify locations of multiple centers of curvature of the at least one lens element included in the lens module, the optical axis of the lens module being derived by identifying a straight line passing through two or more of the centers of curvature;
adjusting at least one of the lens module and the image sensor based on the determined tilt angle of the imaging axis of the image sensor and the determined tilt angle of the optical axis of the lens module so that the imaging axis and the optical axis are aligned; and thereafter fixedly attaching the lens module with respect to the image sensor.