Imaging system with optimized extended depth of focus

US11802998B2 · kind B2 · utility

Assignee

• Brien Holden Vision Institute Limited · AU

Inventors

• Zeev Zalevsky · Rosh HaAyin, IL
• Alex Zlotnik · Ashdod, IL
• Ido Raveh · Jaljulya, IL
• Shai Ben-Yaish · Savyon, IL
• Ofer Limon · Kfar Sava, IL
• Oren Yehezkel · Ramat Gan, IL
• Karen Lahav · Netanya, IL

Key dates

• Filing date: Nov 11, 2021
• Grant date: Oct 31, 2023
• Expiry date: Nov 11, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/932
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical processor is presented for applying optical processing to a light field passing through a predetermined imaging lens unit. The optical processor comprises a pattern in the form of spaced apart regions of different optical properties. The pattern is configured to define a phase coder, and a dispersion profile coder. The phase coder affects profiles of Through Focus Modulation Transfer Function (TFMTF) for different wavelength components of the light field in accordance with a predetermined profile of an extended depth of focusing to be obtained by the imaging lens unit. The dispersion profile coder is to configured in accordance with the imaging lens unit and the predetermined profile of the extended depth of focusing to provide a predetermined overlapping between said TFMTF profiles within said predetermined profile of the extended depth of focusing.