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US 12,498,548 B2Granted
High etendue lens assembly with large zoom range
AssigneeNavitar, Inc.
InventorChad Byler
Life of this patent
Estimating the term…
Abstract
A finite conjugate lens assembly with modular interchangeable components includes a zooming component that includes three independently movable lens groups that are disposed within the lens assembly between a pair of static lens groups. The lens assembly exhibits an etendue of between 0.95 and 4.65 mm2sr.
Claims13
A digital microscope, comprising:
- (a) a modular finite conjugate zoom lens assembly, comprising a core zoom module including a zooming component that comprises two or three independently movable lens groups, wherein the modular finite conjugate zoom lens assembly is configured to exhibit:
- a. Between 0.95 and 4.65 mm2sr of etendue, and
- b. a ratio of highest to lowest magnification between 5.5:1 and 16:1, and
- c. a magnification of at least 2× at one or more points of a zoom range, and
- d. wherein said zoom lens assembly comprises:
- (i) a first fixed lens group comprising a doublet disposed at an object end of said zoom lens assembly;
- (ii) a second fixed lens group comprising a doublet and a singlet;
- and
- (iii) a third lens group disposed between the first and second fixed lens groups;
- and
- wherein said third lens group consists essentially of:
- (A) a first lens subgroup which is independently movable in its entirety comprising a doublet;
- (B) a second lens subgroup consisting essentially of a doublet and a singlet;
- and
- (C) a third lens subgroup which is independently movable in its entirety comprising a doublet;
- and
- (b) an image sensor comprising between 6.6 and 32 megapixels disposed at an image plane of the finite conjugate lens assembly for capturing images.
14 more elements
A digital microscope,
- comprising:
- (a) a modular finite conjugate zoom lens assembly, comprising a core zoom module including a zooming component that comprises two or three independently movable lens groups, wherein the modular finite conjugate zoom lens assembly is configured to exhibit:
- a. Between 0.95 and 4.65 mm2sr of etendue, and
- b. a ratio of highest to lowest magnification between 5.5:1 and 16:1, and
- c. a magnification of at least 2× at one or more points of a zoom range, and
- d. wherein said zoom lens assembly comprises:
- (i) a first fixed lens group comprising a doublet or a triplet disposed at an object end of said zoom lens assembly;
- (ii) a second fixed lens group comprising (I) a doublet and a singlet or (II) a triplet disposed at an image end of said zoom lens assembly;
- and
- (iii) a third lens group disposed between the first and second fixed lens groups;
- and
- (iv) wherein said third lens group consists essentially of:
- (A) a first lens subgroup which is independently movable in its entirety comprising a doublet or a triplet;
- (B) a second lens subgroup consisting essentially of three lenses;
- and
- (C) a third lens subgroup which is independently movable in its entirety comprising a doublet, wherein the third lens subgroup comprises a second doublet;
- and
- (b) an image sensor comprising between 6.6 and 32 megapixels disposed at an image plane of the finite conjugate lens assembly for capturing images.
15 more elements
A digital microscope, comprising:
- (a) A modular finite conjugate zoom lens assembly comprising a core zoom module including a zooming component that comprises two or three independently movable lens groups, wherein the modular finite conjugate zoom lens assembly is configured to exhibit:
- a. between 0.95 and 4.65 mm2sr of etendue, and
- b. a ratio of highest to lowest magnification between 5.5:1 and 16:1, and
- c. a magnification of at least 2× at one or more points of a zoom range, and
- d. wherein said zoom lens assembly comprises:
- (i) a first fixed lens group comprising a doublet or a triplet disposed at an object end of said zoom lens assembly;
- (ii) a second fixed lens group comprising a doublet or a triplet disposed at an image end of said zoom lens assembly;
- (iii) a third lens group disposed between the first and second fixed lens groups;
- and
- (iv) wherein said third lens group consists essentially of:
- (A) a first lens subgroup which is independently movable comprising a triplet;
- (B) a second lens subgroup consisting essentially of two or three lenses configured as (I) a doublet, or (II) a doublet and a singlet, or (III) three singlets;
- and
- (C) a third lens subgroup which is independently movable in its entirety comprising a doublet;
- and
- (b) an image sensor comprising between 6.6 and 32 megapixels disposed at an image plane of the finite conjugate lens assembly for capturing images.
13 more elements
A digital microscope, comprising:
- (a) A modular finite conjugate zoom lens assembly comprising a core zoom module including a zooming component that comprises two or three independently movable lens groups, wherein the modular finite conjugate zoom lens assembly is configured to exhibit:
- a. between 0.95 and 4.65 mm2sr of etendue, and
- b. a ratio of highest to lowest magnification between 5.5:1 and 16:1, and
- c. a magnification of at least 2× at one or more points of a zoom range, and
- d. wherein said zoom lens assembly comprises:
- (i) a first fixed lens group comprising a doublet or a triplet disposed at an object end of said zoom lens assembly;
- (ii) a second fixed lens group comprising a doublet or a triplet disposed at an image end of said zoom lens assembly;
- and
- (iii) a third lens group disposed between the first and second fixed lens groups;
- and
- (iv) wherein said third lens group consists essentially of:
- (A) a first lens subgroup which is independently movable comprising a doublet or a triplet;
- (B) a second lens subgroup consisting essentially of three singlets;
- and
- (C) a third lens subgroup which is independently movable in its entirety comprising a doublet;
- and
- (b) an image sensor comprising between 6.6 and 32 megapixels disposed at an image plane of the finite conjugate lens assembly for capturing images.
14 more elements
A digital microscope, comprising:
- (a) A modular finite conjugate zoom lens assembly comprising a core zoom module including a zooming component that comprises two or three independently movable lens groups, wherein the modular finite conjugate zoom lens assembly is configured to exhibit:
- a. between 0.95 and 4.65 mm2sr of etendue, and
- b. a ratio of highest to lowest magnification between 5.5:1 and 16:1, and
- c. a magnification of at least 2× at one or more points of a zoom range, and
- d. wherein said zoom lens assembly comprises:
- (i) a first fixed lens group comprising a doublet or a triplet disposed at an object end of said zoom lens assembly;
- (ii) a second fixed lens group comprising a doublet or a triplet disposed at an image end of said zoom lens assembly;
- and
- (iii) a third lens group disposed between the first and second fixed lens groups;
- and
- (iv) wherein said third lens group consists essentially of:
- (A) a first lens subgroup which is independently movable comprising a doublet or a triplet;
- (B) a second lens subgroup consisting essentially of two or three lenses configured as (I) a doublet, or (II) a doublet and a singlet, or (III) three singlets;
- and
- (C) a third lens subgroup which is independently movable in its entirety comprising a first doublet and a second doublet;
- and
- (b) an image sensor comprising between 6.6 and 32 megapixels disposed at an image plane of the finite conjugate lens assembly for capturing images.
14 more elements
Dependencies are inferred from the claim text.