Lens attachment for a high etendue modular zoom lens
AssigneeNavitar, Inc.
InventorChad Byler
Life of this patent
Estimating the term…
Abstract
A lens attachment module is configured for coupling with a zoom module of a finite conjugate optical assembly. The lens attachment module includes a lens assembly that has a positive focal length, and exhibits a pupil size of between 16 and 25 mm and a pupil depth greater than 50 mm.
Claims21
A lens assembly, comprising a lens attachment module that includes two or more lens elements, that is configured for coupling with a zoom module for use as part of a zoom lens system, and that has a positive focal length, and wherein the lens assembly exhibits a pupil size of between 16 and 25 mm and a pupil depth greater than 50 mm.
A finite conjugate camera, comprising, from object end to image end:
- (a) a lens attachment module that comprises a lens attachment lens assembly including (i) a doublet and a triplet, or (ii) a doublet with two or more singlets, or (iii) two doublets and one or more singlets;
- (b) an afocal zoom module exhibiting a ratio of highest to lowest magnification between 5.5:1 and 16:1 and an etendue between 0.95 and 4.65 mm2sr, and including a zoom lens assembly including (i) a first positive focal length static group including a triplet or a doublet and a singlet;
- (ii) a first negative focal length movable group including a triplet, or one or two doublets, or a doublet and a singlet;
- (iii) a third static or movable group including a doublet, or a triplet, or three singlets;
- (iv) a second negative focal length movable group including one or two doublets, or a doublet and a singlet;
- and (v) a second positive focal length static group including a triplet, a doublet, or a doublet and a singlet;
- (c) a rear adapter module that comprises a rear adapter lens assembly including (i) a doublet and three singlets, or (ii) two doublets and a singlet, or (iii) two doublets and two singlets, or (iv) a doublet and four singlets;
- and
- (d) an image sensor or eyepiece disposed at an image plane.
Dependencies are inferred from the claim text.