Miniature camera with zoom lens

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-2.0 0.61 4.0 4.64 Iris is located at 0.02mm in front of surface 9. Surface No. Radius Thickness N.sub.D V ______________________________________ 1 3.93 0.10 1.673 32.2 2 -4.69 0.004 3 -7.19 0.07 1.620 60.3 4 0.89 (1) 5 0.92 0.16 1.639 55.5 6 -19.68 0.08 7 1.22 0.13 1.630 58.3 8 -19.14 (2) 9 -1.62 0.04 1.673 32.2 10 0.39 0.01 11 0.43 0.08 1.658 57.3 12 1.18 (3) 13 23.63 0.04 1.689 31.2 14 -6.81 0.004 15 0.92 0.09 1.713 53.9 16 3.03 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 2.12 0.19 0.91 1.5 1.45 0.20 1.57 2.0 0.99 0.23 2.01 .vertline.F.sub.A /FVD.vertline. = 0.47 F.sub.A = -2.20 F.sub.B /FVD = 0.18 F.sub.B = 0.83 .vertline.F.sub.C /FVD.vertline. = 0.18 F.sub.C = 0.85 F.sub.D /FVD = 0.31 F.sub.D = 1.46 F.sub.D /BFL = 2.39 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-2.78 0.91 5.6 7.33 Iris is located at 0.03mm in front of surface 10. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 -39.54 0.12 1.785 25.7 2 -4.15 0.01 3 -5.79 0.09 1.658 57.3 4 1.48 (1) 5 2.12 0.11 1.697 55.5 6 -146.90 0.01 7 1.24 0.16 1.697 55.5 8 -4.00 0.05 1.785 25.7 9 4.20 (2) 10 1.59 0.05 1.518 59.0 11 0.72 (3) 12 3.44 0.22 1.697 55.5 13 -1.62 0.06 14 -1.40 0.09 1.785 25.7 15 -3.45 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 4.02 0.19 1.25 1.74 2.63 0.09 2.74 2.78 1.54 0.19 3.72 .vertline.F.sub.A /FVD.vertline. = 0.35 F.sub.A = -2.57 F.sub.B /FVD = 0.20 F.sub.B = 1.43 .vertline.F.sub.C /FVD.vertline. = 0.35 F.sub.C = 2.58 F.sub.D /FVD = 0.44 F.sub.D = 3.25 F.sub.D /BFL = 3.57 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-2.78 0.91 5.6 7.13 Iris is located at 0.04mm in front of surface 10. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 -41.01 0.12 1.785 25.7 2 -3.98 0.01 3 -5.40 0.09 1.654 57.5 4 1.43 (1) 5 2.24 0.11 1.697 55.5 6 -16.57 0.01 7 1.08 0.16 1.697 55.5 8 -3.67 0.05 1.785 25.7 9 3.98 (2) 10 2.03 0.05 1.511 57.8 11 0.67 (3) 12 3.67 0.22 1.697 55.5 13 -1.59 0.06 14 -1.38 0.09 1.785 25.7 15 -3.11 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.87 0.15 1.25 1.74 2.53 0.09 2.65 2.78 1.48 0.17 3.62 .vertline.F.sub.A /FVD.vertline. = 0.35 F.sub.A = -2.50 F.sub.B /FVD = 0.18 F.sub.B = 1.26 .vertline.F.sub.C /FVD.vertline. = 0.28 F.sub.C = -1.97 F.sub.D /FVD = 0.44 F.sub.D = 3.14 F.sub.D /BFL = 3.45 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thickness of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-2.78 0.91 5.6 6.71 Iris is located at 0.04 in front of surface 10. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 38.20 0.12 1.785 25.7 2 -3.95 0.01 3 -5.32 0.09 1.673 56.5 4 1.23 (1) 5 1.80 0.11 1.697 55.5 6 -8.20 0.01 7 1.02 0.16 1.697 55.5 8 -2.65 0.05 1.785 25.7 9 11.37 (2) 10 17.91 0.05 1.551 45.8 11 0.63 (3) 12 3.63 0.22 1.697 55.5 13 -1.73 0.02 14 -1.46 0.09 1.785 25.7 15 -2.70 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.49 0.10 1.28 1.74 2.27 0.09 2.51 2.78 1.31 0.15 3.42 .vertline.F.sub.A /FVD.vertline. = 0.33 F.sub.A = -2.23 F.sub.B /FVD = 0.14 F.sub.B = 0.95 .vertline.F.sub.C /FVD.vertline. = 0.18 F.sub.C = -1.18 F.sub.D /FVD = 0.43 F.sub.D = 2.88 F.sub.D /BFL = 3.16 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-2.78 0.91 5.6 6.78 Iris is located at 0.04mm in front of surface 10. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 69.54 0.16 1.785 25.7 2 -4.04 0.01 3 -5.56 0.09 1.673 56.5 4 1.28 (1) 5 1.88 0.23 1.697 55.5 6 -8.06 0.01 7 0.98 0.19 1.697 55.5 8 -2.75 0.05 1.785 25.7 9 8.89 (2) 10 14.46 0.05 1.558 44.3 11 0.61 (3) 12 3.13 0.26 1.603 60.7 13 -1.66 0.02 14 -1.42 0.09 1.785 25.7 15 -2.16 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.50 0.10 1.11 1.74 2.20 0.09 2.34 2.78 1.31 0.15 3.25 .vertline.F.sub.A /FVD.vertline. = 0.34 F.sub.A = -2.28 F.sub.B /FVD = 0.14 F.sub.B = 0.97 .vertline.F.sub.C /FVD.vertline. = 0.17 F.sub.C = -1.13 F.sub.D /FVD = 0.41 F.sub.D = 2.76 F.sub.D /BFL = 3.03 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-3.0 0.59 4.0 5.91 Iris is located at 0.05mm in front of surface 9. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 7.53 0.13 1.806 39.1 2 -4.26 0.005 3 -4.57 0.09 1.697 55.5 4 1.22 (1) 5 1.26 0.24 1.710 52.9 6 -4.37 0.005 7 0.74 0.20 1.708 53.2 8 2.28 (2) 9 -68.34 0.05 1.805 26.5 10 0.51 (3) 11 1.49 0.16 1.603 60.7 12 -8.30 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.30 0.13 1.00 1.82 2.20 0.12 2.11 3.0 1.25 0.14 3.04 .vertline.F.sub.A /FVD.vertline. = 0.40 F.sub.A = -2.37 F.sub.B /FVD = 0.12 F.sub.B = 0.73 .vertline.F.sub.C /FVD.vertline. = 0.13 F.sub.C = -0.76 F.sub.D /FVD = 0.36 F.sub.D = 2.10 F.sub.D /BFL = 3.56 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-3.0 0.68 4.0 5.91 Iris is located at 0.05mm in front of surface 9. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 11.71 0.13 1.805 26.8 2 -7.46 0.005 3 -25.14 0.09 1.697 55.5 4 1.22 (1) 5 1.37 0.21 1.713 52.2 6 -4.26 0.005 7 0.80 0.19 1.697 55.5 8 3.18 (2) 9 -23.07 0.15 1.805 26.5 10 0.53 (3) 11 1.44 0.23 1.603 60.7 12 -7.75 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.23 0.12 0.87 1.82 2.10 0.11 2.01 3.0 1.14 0.14 2.93 .vertline.F.sub.A /FVD.vertline. = 0.40 F.sub.A = -2.39 F.sub.B /FVD = 0.13 F.sub.B = 0.75 .vertline.F.sub.C /FVD.vertline. = 0.11 F.sub.C = -0.63 F.sub.D /FVD = 0.34 F.sub.D = 2.02 F.sub.D /BFL = 2.97 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system of compact configuration along which reflector means may be introduced for deflecting the optical path of said optical system, and having substantially the following specification:

• ______________________________________ Dimensions Are Given In Millimeters EFL BFL F/N FVD 1.0-3.0 0.68 4.0 5.91 Iris is located at 0.05mm in front of surface 9. Surface No. Radius Thickness N.sub. D V ______________________________________ 1 54.17 0.13 1.805 31.6 2 -5.77 0.005 3 -26.81 0.09 1.656 57.4 4 1.19 (1) 5 1.35 0.22 1.713 52.2 6 -4.17 0.005 7 0.77 0.19 1.697 55.5 8 2.36 (2) 9 46.38 0.16 1.805 26.5 10 0.50 (3) 11 1.05 0.05 1.806 40.7 12 0.87 0.005 13 0.88 0.17 1.493 66.2 14 -5.02 EFL ZOOM SPACE ZOOM SPACE ZOOM SPACE ______________________________________ (1) (2) (3) 1.0 3.24 0.12 0.85 1.82 2.10 0.12 1.99 3.0 1.14 0.15 2.92 .vertline.F.sub.A /FVD.vertline. = 0.40 F.sub.A = -2.39 F.sub.B /FVD = 0.13 F.sub.B = 0.76 .vertline.F.sub.C /FVD.vertline. = 0.11 F.sub.C = -0.63 F.sub.D /FVD = 0.33 F.sub.D = 1.97 F.sub.D /BFL = 2.90 ______________________________________
• wherein the first column lists the surfaces of lens elements numerically starting at the ray entrance side of the system;
• the second column lists the respective base radii;
• the third column lists the thicknesses of the respective elements and the spacing therebetween;
• the fourth and fifth columns respectively list the index of refraction N.sub.D and the dispersive index V of the optical materials of the respective elements.

An optical system for a camera having a substantially rectangular housing substantially enclosing a zoom lens defining an optical axis with a light ray entrance through one side of the housing to form an image at a film plane in the housing, said plane arranged perpendicular to a portion of the optical axis;

• the zoom lens comprising four lens groups, a first negative group being axially movable to focus the lens, a second positive lens group and a third negative lens group, said second and third groups being axially movable to vary the equivalent focal length of the lens, and a fourth positive lens group;
• means twice folding the optical axis of said lens between said first and second lens groups and between said third and fourth lens groups;
• an aperture defining means located between said second and third lens groups;
• and
• a shutter means located in front of the film plane;
• said lens satisfying the following relationships:
• 0. 3.ltoreq..vertline.F.sub.A /FVD.vertline..ltoreq.0.5
• 0.1.ltoreq.F.sub.B /FVD.ltoreq.0.2
• 0.1.ltoreq..vertline.F.sub.C /FVD.vertline..ltoreq.0.4
• 0.3.ltoreq.F.sub.D /FVD.ltoreq.0.5
• F.sub.A <0
• F.sub.D /BFL.gtoreq.2.4
• where F.sub.A, F.sub.B, F.sub.C and F.sub.D are equivalent focal lengths of the four groups from the object to the image end, respectively;
• FVD is the front vertex distance of the lens, and BFL is the back focal length of the lens.

An optical system for a camera having a substantially rectangular housing substantially enclosing a zoom lens defining an optical axis with a light ray entrance through one side of the housing to form an image at a film plane in the housing, said plane arranged perpendicular to a portion of the optical axis;

• the zoom lens comprising four lens groups, a first negative group being axially movable to focus the lens, a second positive lens group and a third negative lens group, said second and third groups being axially movable to vary the equivalent focal length of the lens, and a fourth positive lens group;
• said first group comprising a positive meniscus concave to the object and a biconcave element;
• said second group comprising a biconvex element and a positive doublet, said third group comprising a meniscus convex to the object;
• and said fourth group comprising a biconvex element and a meniscus concave to the object;
• means twice folding the optical axis of said lens between said first and second lens groups and between said third and fourth lens groups;
• an aperture defining means located between said second and third lens groups;
• and
• a shutter means located in front of the film plane.