公开(公告)号：EP4180853A1

公开(公告)日：2023-05-17

申请号：EP22206978.3

申请日：2022-11-11

Applicant: Datalogic IP Tech S.r.l.

Inventor： D'ERCOLI, Francesco ,  DEL CASTELLO, Matteo ,  CUMOLI, Marco

IPC: G02B7/09 ,  G02B7/10

Abstract: Systems and methods for autofocus includes a light source for generating a light wave and a varifocal lens arranged in front of the light source. The varifocal lens receives the light wave and generates a Fourier transform of a known semi-transparent pattern positioned on the rear focal plane (or input plane) of the varifocal lens therefrom. An image sensor receives the Fourier transform carried by the light wave after being reflected from an object. A focus tunable lens is arranged in front of the image sensor and through which the reflected light wave passes. A processor adjusts a focal length of the varifocal lens to cause the Fourier transform carried by the light wave to form a predefined (expected) pattern detected by the image sensor, and adjusts a control parameter of the focus tunable lens until one or more spatial frequencies of the predefined pattern detected at the image sensor match one or more predefined spatial frequencies.

公开(公告)号：EP4519846A1

公开(公告)日：2025-03-12

申请号：EP23724821.6

申请日：2023-05-05

Applicant: Datalogic IP Tech S.r.l.

Inventor： CANINI, Federico ,  AL-ERWI, Ali ,  D ERCOLI, Francesco ,  PISAPIA, Amedeo ,  DEL CASTELLO, Matteo

IPC: G06V20/50 ,  G07G1/00 ,  H04N25/47