- Patent Title: Objective lens for a still or film camera and method for selective damping of specific spatial frequency ranges of the modulation transfer function of such an objective lens
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Application No.: US15620643Application Date: 2017-06-12
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Publication No.: US10746975B2Publication Date: 2020-08-18
- Inventor: Marco Pretorius , Vladan Blahnik
- Applicant: Carl Zeiss AG
- Applicant Address: DE Oberkochen DE Jena
- Assignee: Carl Zeiss AG,Carl Zeiss Microscopy GmbH
- Current Assignee: Carl Zeiss AG,Carl Zeiss Microscopy GmbH
- Current Assignee Address: DE Oberkochen DE Jena
- Agency: Walter Ottesen, P.A.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@d5d24cc
- Main IPC: G02B13/20
- IPC: G02B13/20 ; G02B27/00 ; G02B3/00 ; G02B3/02 ; G02B3/04 ; G02B21/33 ; G03B5/04

Abstract:
An objective lens for a still or film camera includes a first and second lens-element arrangement, and a wavefront manipulator. The first and second lens-element arrangement are spaced mutually apart along an optical axis of the lens such that an interstice is present therebetween. The wavefront manipulator is in the interstice and includes two optical components displaceable counter to one another, perpendicular to the optical axis, and which each include a free-form surface. The wavefront manipulator has a zero position, wherein the optical components do not cause any image aberrations in the imaging properties of the objective lens, and effective positions, wherein the optical components are displaced counter to one another, out of the zero position perpendicular to the optical axis, and wherein the optical components cause a spherical aberration in the imaging properties of the objective lens.
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