US 12,174,445 B2
Camera module manufacturing device
Tsukasa Yamamoto, Saitama (JP); Fujio Asano, Saitama (JP); Koji Imagawa, Saitama (JP); Hideho Miyake, Saitama (JP); Hiroki Takagaki, Nagano (JP); and Koji Matama, Nagano (JP)
Assigned to PFA Corporation, Saitama (JP); and TECHNO HORIZON CO., LTD., Aichi (JP)
Appl. No. 17/799,686
Filed by PFA Corporation, Saitama (JP); and TECHNO HORIZON CO., LTD., Aichi (JP)
PCT Filed Feb. 26, 2020, PCT No. PCT/JP2020/007682
§ 371(c)(1), (2) Date Aug. 14, 2022,
PCT Pub. No. WO2021/171412, PCT Pub. Date Sep. 2, 2021.
Prior Publication US 2023/0069195 A1, Mar. 2, 2023
Int. Cl. G02B 7/02 (2021.01); G01M 11/02 (2006.01); G03B 17/00 (2021.01)
CPC G02B 7/02 (2013.01) [G01M 11/0214 (2013.01); G01M 11/0221 (2013.01); G03B 17/00 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A camera module manufacturing device for adjusting relative positions of a lens unit having a built-in shooting lens and a sensor substrate carrying an image sensor for converting an image formed through the shooting lens into an image signal, and adhering the lens unit and the sensor substrate, with the relative positions adjusted, the camera module manufacturing device comprising:
an optical module including:
a central optical unit including a central collimator lens and a central measurement chart disposed inclined relative to a plane vertical to an optical axis of the central collimator lens, the central optical unit being for forming an image of the central measurement chart on a central portion of the image sensor through the central collimator lens and the shooting lens, and
at least two peripheral optical units each including a peripheral collimator lens and a peripheral measurement chart disposed inclined relative to a plane vertical to an optical axis of the peripheral collimator lens, each peripheral optical unit being for forming images of the peripheral measurement chart on different peripheral portions of the image sensor through the peripheral collimator lens and the shooting lens; and
a controller for adjusting the relative positions of the lens unit and the sensor substrate, based on a central image signal obtained by converting by the image sensor the image of the central measurement chart formed on the central portion of the image sensor by the central optical unit, and respective peripheral image signals obtained by converting by the image sensor the respective images of the respective peripheral measurement charts formed on the respective peripheral portions of the image sensor by the respective peripheral optical units,
wherein
each peripheral optical unit includes the peripheral collimator lens and the peripheral measurement chart that are disposed in a casing, and the optical axis of the peripheral collimator lens is inclined relative to the optical axis of the central collimator lens of the central optical unit, and
an angle of inclination is adjustable.