公开(公告)号：US20230358989A1

公开(公告)日：2023-11-09

申请号：US17661908

申请日：2022-05-03

Applicant: Aptiv Technologies Limited

Inventor： Ronald M. Taylor ,  Morgan Daniel Murphy

IPC: G02B7/00 ,  G02B1/00 ,  G01M11/02 ,  G02B7/02

CPC classification number: G02B7/003 ,  G02B1/002 ,  G01M11/0292 ,  G02B7/023 ,  G02B7/021

Abstract: Described is camera focusing including lens centration estimation using variable focal length phased metalenses. Camera modular alignment and test (CMAT) equipment checks the modular transfer function (MTF) performance of lenses and an image sensor. The CMAT equipment positions a variable focal length phased metalens between the lenses and the image sensor. The metalens includes multiple segments that provide a variable focus depending on distance and angle from boresight of the image sensor. By measuring optical characteristics of the lenses at two opposing segments of the metalens, defocusing effects and a lens centration tilt vector can be computed. Repositioning the lenses to align the centration tilt vector with the boresight of the image sensor improves the MTF performance. A final camera assembly with lenses in precise alignment with the image sensor can be produced, which may improve production output by increasing pass rate at an end of line tester.

公开(公告)号：US20230194251A1

公开(公告)日：2023-06-22

申请号：US17657345

申请日：2022-03-30

Applicant: Aptiv Technologies Limited

Inventor： Morgan Daniel Murphy ,  Ronald M. Taylor

IPC: G01B11/27 ,  G02B7/02

CPC classification number: G01B11/27 ,  G02B7/021 ,  G02B7/025 ,  G02B7/04

Abstract: The techniques of this disclosure relate to actively selecting lenses for camera focus processes. Lenses to be used during camera assembly are chosen based on whether their pairing with a specific set of production components can satisfy focus performance criteria of end of line test. Test equipment may check the lenses by dry-fit aligning them to a particular set of production components. If minimum focus performance cannot be achieved, then a different set of lenses are used to with that set of production components to produce a final camera assembly. This way, because the lenses are actively selected during production to achieve satisfactory focus performance of the EOLT, each final camera assembly is more likely to pass the EOLT, thereby improving camera production output.

公开(公告)号：US20230199311A1

公开(公告)日：2023-06-22

申请号：US17657351

申请日：2022-03-30

Applicant: Aptiv Technologies Limited

Inventor： Morgan Daniel Murphy ,  Ronald M. Taylor

IPC: H04N5/232 ,  H04N5/225

CPC classification number: H04N5/23212 ,  H04N5/2254 ,  H04N5/23261

Abstract: The techniques of this disclosure relate to actively selecting lenses for camera focus processes. Test equipment may check lenses by dry-fit aligning them to a particular set of production components. If minimum focus performance cannot be achieved, then the lenses go unused for a final camera assembly. In certain situations, the unused set of lenses is salvageable for use in another camera assembly. Advanced CMAT equipment may compute and apply a rotation for unused lenses to improve their focus performance the next time they are used in a final assembly. A maximum number of attempts to rotationally fix a set of lenses may be observed to avoid trying the same lenses again and again, possibly without ever having success. This way, because the lenses actively selected can also be rotated during production, final camera assemblies can be produced that are likely to pass the EOLT, and by minimizing waste.

公开(公告)号：US20240077784A1

公开(公告)日：2024-03-07

申请号：US17930030

申请日：2022-09-06

Applicant: Aptiv Technologies Limited

Inventor： Ronald M. Taylor ,  Morgan Daniel Murphy

IPC: G03B13/32 ,  H04N5/232

CPC classification number: G03B13/32 ,  H04N5/23212 ,  G06V20/56

Abstract: Described is phased metalens depth of focus increase for camera focusing. An objective camera lens is configured to provide a focus window across multiple radial zones within a field of view. A camera imager is configured to capture an image of the field of view. When at least two of the radial zones have different back focal lengths relative the imager and the objective lens, a phased metalens is positioned between the objective lens and the camera imager. The metalens is configured to compensate for defocus caused by the different back focal lengths by increasing, across the radial zones within the field of view, a depth of the focus window. The metalens improves focus across the field of view, which prevents variations in objective lens characteristics from reducing image quality.