US3743384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for the magnification varying portion of an ultra-telephoto type zoom lens
Assignee: Nikon Corp
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Filing: 1971-12-16
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Granted: 1973-07-03
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Expires: 1991-12-16
Abstract
Abstract An optical system for the magnification varying portion of an ultra-telephoto type zoom lens comprises three lens groups of convergence, divergence and convergence disposed in the named order as viewed from the object. The optical system has a power arrangement determined by certain conditions. The first group of convergence comprises two components, of which the first one is a single biconvex lens and the second component consists of three lenses, convex, concave and convex, respectively. These three lenses are such that the refractive index of the intermediate concave lens is greater than that of its preceding convex lens but smaller than that of its succeeding convex lens. The second component of the first group also forms a positive meniscus lens system generally convex to the object side. The second group of divergence comprises three components, of which the first one is a negative component consisting of a convex and a concave lens joined together with their interface being concave to the object side, and these two lenses are arranged so that the preceding one has a greater refractive index that the other. The second and third components of the second group may be individual, single, biconcave lenses. The third group of convergence may comprise two components, both of which are positive composite lenses. The first component of the third group is in the form of a meniscus lens generally concave to the object side and the second component of the third group has its interface concave to the object side. The lenses forming the second component of the third group are such that the lens before the interface has a smaller refractive index than the one behind the interface.
Inventors
- 👤 S Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:29
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/144; G02B15/1441; G02B15/144113
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
263 words
An optical system for an ultra-telephoto type zoom lens system comprising a magnification varying portion including a first convergence lens group, a second divergence lens group, a third convergence lens group and a relay lens group disposed in the named order, said first, second and third lens groups forming an afocal magnification varying system, said second and third groups being axially differently movable in the same direction, and said relay lens group forming a telephoto system having a positive Petzval sum; said first gRoup including two components, of which the first component is a single biconvex lens, and the second component consists of a biconvex lens, a biconcave lens and a convex meniscus lens, these three lenses cemented together; said second group including three components of which the first component consists of a biconvex lens and a biconcave lens cemented together, the second and third components are single biconcave lenses, respectively; said third group including two components of which the first component consists of two meniscus lenses cemented together and the curvature of the cemented surface being concave to the object side, and the second component consists of a biconvex lens and a concave meniscus lens cemented together; and said relay lens group including two portions of which the first portion comprises two components, the first component thereof being a single biconvex lens, and the second component being a biconvex and biconcave lenses cemented together, and the second portion comprises two components, the first component thereof being a single biconvex lens and the second component being a biconcave and biconvex lenses cemented together.
Claim 2
Dependent Claim
263 words
An optical system for an ultra-telephoto type zoom lens system comprising a magnification varying portion including a first convergence lens group, a second divergence lens group, a third convergence lens group and a relay lens group disposed in the named order, said first, second and third lens groups forming an afocal magnification varying system, said second and third groups being axially differently movable in the same direction, and said relay lens group forming a telephoto system having a positive Petzval sum; said first gRoup including two components, of which the first component is a single biconvex lens, and the second component consists of a biconvex lens, a biconcave lens and a convex meniscus lens, these three lenses cemented together; said second group including three components of which the first component consists of a biconvex lens and a biconcave lens cemented together, the second and third components are single biconcave lenses, respectively; said third group including two components of which the first component consists of two meniscus lenses cemented together and the curvature of the cemented surface being concave to the object side, and the second component consists of a biconvex lens and a concave meniscus lens cemented together; and said relay lens group including two portions of which the first portion comprises two components, the first component thereof being a single biconvex lens, and the second component being a biconvex and biconcave lenses cemented together, and the second portion comprises two components, the first component thereof being a single biconvex lens and the second component being a biconcave and biconvex lenses cemented together.
Claim 3
Dependent Claim
313 words
An optical system according to claim 1, possessing the following dimensions and relationships; f 180-600 mm, F/8 telephoto ratio 0.7 r1 + 264.9 d1 7.0 n1 1.51728 Nu 1 69.6 r2 -370.0 d2 0.2 r3 +174.9 d3 8.2 n2 1.48606 Nu 2 81.5 f1 r4 -353.1 244.0 d4 2.0 n3 1.74950 Nu 3 35.0 r5 +180.8 d5 5.0 n4 1.59507 Nu 4 35.6 r6 +1195.6 d6 2.474-118.311 r7 +5000.0 d7 4.8 n5 1.7847 Nu 5 26.1 r8 -70.3 d8 1.5 n6 1.62041 Nu 6 60.3 f2 r9 +104.02 -50.3639 d9 4.0 r10 -96.6 d10 2.0 n7 1.5168 Nu 7 64.2 r11 +220.9 d11 4.0 r12 -83.0 d12 1.5 n8 1.5168 Nu 8 64.2 r13 +287.5 d13 38.532- 3.430 r14 -1850.0 d14 4.0 n9 1.62041 Nu 9 60.3 r15 -77.683 d15 1.5 n10 1.59551 Nu 10 39.2 r16 -122.917 d16 0.1r17 +251.3 f3 d17 5.3 n11 1.51728 Nu 11 69.6 113.2688 r18 -85.15 d18 1.5 n12 1.75520 Nu 12 27.5 r19 -157.5 d19 83.912-3.177 r20 +203.9 d20 3.6 n13 1.51728 Nu 13 69.6 r21 -309.7 d21 3.2 r22 +47.9 d22 6.2 n14 1.48606 Nu 14 81.5 r23 -459.0 d23 2.3 n15 1.717 Nu 15 47.9 f4 r24 +70.7 275.744 d24 71.5 r25 +271.0 d25 2.7 n16 1.5168 Nu 16 64.2 r26 -165.7 d26 7.8 r27 -75.9 d27 1.4 n17 1.76684 Nu 17 46.6 r28 +51.5 d28 4.8 n18 1.59507 Nu 18 35.6 r29 -97.9 wherein f1, f2 . . . f4 designate the focal lengths of respective four lens groups, r1, r2 . . . r29 designate the radii of curvature of successive lenses, d1, d2 . . . d28 designate the center thicknesses of, or air gaps between the successive lenses, n1, n2 . . . n18 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 18 designate the Abbe numbers of the lenses.
Claim 4
Dependent Claim
291 words
An optical system for an ultra-telephoto type zoom lens system comprising a magnification varying portion including a first convergence lens group, a second divergence lens group, a third convergence lens group and a relay lens group disposed in the named order, said first, second and third lens groups forming an afocal magnification varying system, said second and third groups being axially differently movable in the same direction and said relay lens group forming a telephoto system having a positive Petzval sum; said first group including two components, of which the first component is a single biconvex lens, and the second component consists of a biconvex lens, a biconcave lens and a convex meniscus lens, the latter two of these three lenses cemented together; said second group including three components of which the first component consists of a biconvex lens and biconcave lens cemented together, the second component consists of a biconcave and convex meniscus lens cemented together to enhance the achromatism of the second divergent group as a whole, and the third component is a single biconcave lens; said third group including two components of which the first component consists of two meniscus lenses cemented together and the curvature of cemented surface being concave to the object side, and the second component consists of a biconvex lens and a concave meniscus lens cemented together; and said relay lens group including two portions of which the first portion comprises two components, the first component thereof being a single biconvex lens, and the second component being a biconvex, biconcave and concave meniscus lenses cemented together, and the second portion comprises two components, the first component thereof being a single biconvex lens and the second component being a biconcave and biconvex lenses cemented together.
Claim 5
Dependent Claim
291 words
An optical system for an ultra-telephoto type zoom lens system comprising a magnification varying portion including a first convergence lens group, a second divergence lens group, a third convergence lens group and a relay lens group disposed in the named order, said first, second and third lens groups forming an afocal magnification varying system, said second and third groups being axially differently movable in the same direction and said relay lens group forming a telephoto system having a positive Petzval sum; said first group including two components, of which the first component is a single biconvex lens, and the second component consists of a biconvex lens, a biconcave lens and a convex meniscus lens, the latter two of these three lenses cemented together; said second group including three components of which the first component consists of a biconvex lens and biconcave lens cemented together, the second component consists of a biconcave and convex meniscus lens cemented together to enhance the achromatism of the second divergent group as a whole, and the third component is a single biconcave lens; said third group including two components of which the first component consists of two meniscus lenses cemented together and the curvature of cemented surface being concave to the object side, and the second component consists of a biconvex lens and a concave meniscus lens cemented together; and said relay lens group including two portions of which the first portion comprises two components, the first component thereof being a single biconvex lens, and the second component being a biconvex, biconcave and concave meniscus lenses cemented together, and the second portion comprises two components, the first component thereof being a single biconvex lens and the second component being a biconcave and biconvex lenses cemented together.
Claim 6
Dependent Claim
334 words
An optical system according to claim 3, possessing the following dimensions and relationships; f 360-1200 mm, F/11 telephoto ratio 0.61 r1 +441.5 d1 8.0 n1 1.48606 Nu 1 81.5 r2 -580.0 d2 0.2 r3 +274.2 d3 9.5 n2 1.48606 Nu 2 81.5 f1 r4 -638.1 420.955 d4 1.0 r5 -638.1 d5 4.0 n3 1.744 Nu 3 44.9 r6 +298.2 d6 6.0 n4 1.58913 Nu 4 61.2 r7 +1281.5 d7 11.258-211.258 r8 +8939.7 d8 4.7 n5 1.75520 Nu 5 27.5 r9 -126.6 d9 2.6 n6 1.58913 Nu 6 61.2 r10 +172.9 d10 6.0 f2 r11 -166.7 -86.956 d11 1.3 n7 1.48606 Nu 7 81.5 r12 +118.3 d12 3.0 n8 1.58875 Nu 8 51.2 r13 +238.7 d13 6.0 r14 -149.8 d14 2.6 n9 1.5168 Nu 9 64.2 r15 +444.7 d15 64.853-4.248 r16 -3106.9 d16 3.5 n10 1.62041 Nu 10 60.3 r17 -134.2 d17 2.6 n11 1.61293 Nu 11 36.9 f3 r18 -203.7 d18 0.2 190.565 r19 +398.1 d19 4.7 n12 1.48606 Nu 12 81.5 r20 -143.2 d20 2.6 n13 1.75520 Nu 13 27.5 r21 -246.4 d21 143.138-3.744 r22 +344.6 d22 4.0 n14 1.51454 Nu 14 54.6 r23 -577.7 d23 6.2 r24 +85.8 d24 6.0 n15 1.48606 Nu 15 81.5 r25 -1535.0 f4 d25 13.5 n16 1.744 Nu 16 44.9 537.805 r26 +80.0 d26 6.3 n17 1.6393 Nu 17 45.0 r27 +136.359 d27 139.4 r28 +385.1 d28 2.7 n18 1.50137 Nu 18 56.5 r29 -385.1 d29 15.2 r30 -124.9 d30 2.8 n19 1.74443 Nu 19 49.4 r31 +87.5 d31 4.4 n20 1.60342 Nu 20 38.0 r32 -200.4 wherein f1, f2 . . . f4 designate the focal lengths of respective four lens groups, r1, r2 . . . r32 designate the radii of curvature of successive lenses, d1, d2 . . . d31 designate the center thicknesses of, or air gaps between the successive lenses, n1, n2 . . . n20 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 20 designate the Abbe numbers of the lenses.
Claim 7
Dependent Claim
372 words
An optical system for an ultra-telephoto type zoom lens comprising a magnification varying portion including a first convergence lens group, a divergence lens group, and a second convergence lens group disposed in the named order from the object side of the system and having focal lengths designated, respectively, by f1, f2 and f3, and a relay lens group having a focal length designated by f4, said optical system satisfying the following numerical data wherein, r1, r2 . . . r32 designate the radii of curvature of the successive lenses, d1, d2 . . . d31 designate the center thickness of, or air gaps between the successive lenses, n1, n2 . . . n20 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 20 designate the Abbe numbers of the lenses: r1 +441.5 d1 8.0 n1 1.48606 Nu 1 81.5 r2 -580.0 d2 0.2 r3 +274.2 f1 d3 9.5 n2 1.48606 Nu 2 81.5 420.955 r4 -638.1 d4 1.0 r5 -638.1 d5 4.0 n3 1.744 Nu 3 44.9 r6 +298.2 d6 6.0 n4 1.589.13 Nu 4 61.2 r7 +1281.5 d7 11.258-211.258 r8 +8939.7 d8 4.7 n5 1.75520 Nu 5 27.5 r9 -126.6 d9 2.6 n6 1.58913 Nu 6 61.2 r10 +172.9 d10 6.0 r11 -166.7 f2 d11 1.3 n7 1.48606 Nu 7 81.5 -86.956 r12 +118.3 d12 3.0 n8 1.58875 Nu 8 51.2 r13 +238.7 d13 6.0 r14 -149.8 d14 2.6 n9 1.5168 Nu 9 64.2 r15 +444.7 d15 64.853-4.248 r16 -3106.9 d16 3.5 n10 1.62041 Nu 10 60.3 r17 -134.2 d17 2.6 n11 1.61293 Nu 11 36.9 r18 -203.7 f3 d18 0.2 190.565 r19 +398.1 d19 4.7 n12 1.48606 Nu 12 81.5 r20 -143.2 d20 2.6 n13 1.75520 Nu 13 27.5 r21 -246.4 d21 143.138-3.744 r22 +344.6 d22 4.0 n14 1.51454 Nu 14 54.6 r23 -577.7 d23 6.2 r24 +85.8 d24 6.0 n15 1.48606 Nu 15 81.5 r25 -1535.0 d25 13.5 n16 1.744 Nu 16 44.9 f4 r26 +80.0 d26 6.3 n17 1.6393 Nu 17 45.0 537.805r27 +136.359 d27 139.4 r28 +385.1 d28 2.7 n18 1.50137 Nu 18 56.5 r29 -385.1 d29 15.2 r30 -124.9 d30 2.8 n19 1.74443 Nu 19 49.4 r31 +87.5 d31 4.4 n20 1.60342 Nu 20 38.0 r32 -200.4
Claim 8
Dependent Claim
372 words
An optical system for an ultra-telephoto type zoom lens comprising a magnification varying portion including a first convergence lens group, a divergence lens group, and a second convergence lens group disposed in the named order from the object side of the system and having focal lengths designated, respectively, by f1, f2 and f3, and a relay lens group having a focal length designated by f4, said optical system satisfying the following numerical data wherein, r1, r2 . . . r32 designate the radii of curvature of the successive lenses, d1, d2 . . . d31 designate the center thickness of, or air gaps between the successive lenses, n1, n2 . . . n20 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 20 designate the Abbe numbers of the lenses: r1 +441.5 d1 8.0 n1 1.48606 Nu 1 81.5 r2 -580.0 d2 0.2 r3 +274.2 f1 d3 9.5 n2 1.48606 Nu 2 81.5 420.955 r4 -638.1 d4 1.0 r5 -638.1 d5 4.0 n3 1.744 Nu 3 44.9 r6 +298.2 d6 6.0 n4 1.589.13 Nu 4 61.2 r7 +1281.5 d7 11.258-211.258 r8 +8939.7 d8 4.7 n5 1.75520 Nu 5 27.5 r9 -126.6 d9 2.6 n6 1.58913 Nu 6 61.2 r10 +172.9 d10 6.0 r11 -166.7 f2 d11 1.3 n7 1.48606 Nu 7 81.5 -86.956 r12 +118.3 d12 3.0 n8 1.58875 Nu 8 51.2 r13 +238.7 d13 6.0 r14 -149.8 d14 2.6 n9 1.5168 Nu 9 64.2 r15 +444.7 d15 64.853-4.248 r16 -3106.9 d16 3.5 n10 1.62041 Nu 10 60.3 r17 -134.2 d17 2.6 n11 1.61293 Nu 11 36.9 r18 -203.7 f3 d18 0.2 190.565 r19 +398.1 d19 4.7 n12 1.48606 Nu 12 81.5 r20 -143.2 d20 2.6 n13 1.75520 Nu 13 27.5 r21 -246.4 d21 143.138-3.744 r22 +344.6 d22 4.0 n14 1.51454 Nu 14 54.6 r23 -577.7 d23 6.2 r24 +85.8 d24 6.0 n15 1.48606 Nu 15 81.5 r25 -1535.0 d25 13.5 n16 1.744 Nu 16 44.9 f4 r26 +80.0 d26 6.3 n17 1.6393 Nu 17 45.0 537.805r27 +136.359 d27 139.4 r28 +385.1 d28 2.7 n18 1.50137 Nu 18 56.5 r29 -385.1 d29 15.2 r30 -124.9 d30 2.8 n19 1.74443 Nu 19 49.4 r31 +87.5 d31 4.4 n20 1.60342 Nu 20 38.0 r32 -200.4
Claim 9
Dependent Claim
351 words
An optical system for an ultra-telephoto type zoom lens comprising a magnification varying portion including a first convergence lens group, a divergence lens group, and a second convergence lens group disposed in the named order from the object side of the system and having focal lengths designated, respectively, by f1, f2 and f3, and a relay lens group having a focal length designated by f4, said optical system satisfying the following numerical data wherein, r1, r2 . . . r29 designate the radii of curvature of the successive lenses, d1, d2 . . . d28 designate the center thicknesses of, or air gaps between the successive lenses, n1, n2 . . . n18 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 18 designate the Abbe numbers of the lenses: r1 +264.9 d1 7.0 n1 1.51728 Nu 1 69.6 r2 -370.0 d2 0.2 r3 +174.9 f1 d3 8.2 n2 1.48606 Nu 2 81.5 244.0 r4 -353.1 d4 2.0 n3 1.74950 Nu 3 35.0 r5 +180.8 d5 5.0 n4 1.59507 Nu 4 35.6 r6 +1195.6 d6 2.474-118.311 r7 +5000.0 d7 4.8 n5 1.7847 Nu 5 26.1 r8 -70.3 d8 1.5 n6 1.62041 Nu 6 60.3 r9 +104.02 f2 d9 4.0 -50.3639 r10 -96.6 d10 2.0 n7 1.5168 Nu 7 64.2 r11 +220.9 d11 4.0 r12 -83.0 d12 1.5 n8 1.5168 Nu 8 64.2 r13 +287.5 d13 38.532-3.430 r14 -1850.0 d14 4.0 n9 1.62041 Nu 9 60.3 r15 -77.683 d15 1.5 n10 1.59551 Nu 10 39.2 r16 -122.917 d16 0.1 f3 r17 +251.3 113.2688 d17 5.3 n11 1.51728 Nu 11 69.6 r18 -85.15 d18 1.5 n12 1.75520 Nu 12 27.5 r19 -157.5 d19 83.912-3.177 r20 +203.9 d20 3.6 n13 1.51728 Nu 13 69.6 r21 -309.7 d21 3.2 r22 +47.9 d22 6.2 n14 1.48606 Nu 14 81.5 r23 -459.0 d23 2.3 n15 1.717 Nu 15 47.9 f4 r24 +70.7 275.744 d24 71.5 r25 +271.0 d25 2.7 n16 1.5168 Nu 16 64.2 r26 -165.7 d26 7.8 r27 -75.9 d27 1.4 n17 1.76684 Nu 17 46.6 r28 +51.5 d28 4.8 n18 1.59507 Nu 18 35.6 r29 -97.9
Claim 10
Dependent Claim
351 words
An optical system for an ultra-telephoto type zoom lens comprising a magnification varying portion including a first convergence lens group, a divergence lens group, and a second convergence lens group disposed in the named order from the object side of the system and having focal lengths designated, respectively, by f1, f2 and f3, and a relay lens group having a focal length designated by f4, said optical system satisfying the following numerical data wherein, r1, r2 . . . r29 designate the radii of curvature of the successive lenses, d1, d2 . . . d28 designate the center thicknesses of, or air gaps between the successive lenses, n1, n2 . . . n18 designate the refractive indices of the lenses for d-line, and Nu 1, Nu 2 . . . Nu 18 designate the Abbe numbers of the lenses: r1 +264.9 d1 7.0 n1 1.51728 Nu 1 69.6 r2 -370.0 d2 0.2 r3 +174.9 f1 d3 8.2 n2 1.48606 Nu 2 81.5 244.0 r4 -353.1 d4 2.0 n3 1.74950 Nu 3 35.0 r5 +180.8 d5 5.0 n4 1.59507 Nu 4 35.6 r6 +1195.6 d6 2.474-118.311 r7 +5000.0 d7 4.8 n5 1.7847 Nu 5 26.1 r8 -70.3 d8 1.5 n6 1.62041 Nu 6 60.3 r9 +104.02 f2 d9 4.0 -50.3639 r10 -96.6 d10 2.0 n7 1.5168 Nu 7 64.2 r11 +220.9 d11 4.0 r12 -83.0 d12 1.5 n8 1.5168 Nu 8 64.2 r13 +287.5 d13 38.532-3.430 r14 -1850.0 d14 4.0 n9 1.62041 Nu 9 60.3 r15 -77.683 d15 1.5 n10 1.59551 Nu 10 39.2 r16 -122.917 d16 0.1 f3 r17 +251.3 113.2688 d17 5.3 n11 1.51728 Nu 11 69.6 r18 -85.15 d18 1.5 n12 1.75520 Nu 12 27.5 r19 -157.5 d19 83.912-3.177 r20 +203.9 d20 3.6 n13 1.51728 Nu 13 69.6 r21 -309.7 d21 3.2 r22 +47.9 d22 6.2 n14 1.48606 Nu 14 81.5 r23 -459.0 d23 2.3 n15 1.717 Nu 15 47.9 f4 r24 +70.7 275.744 d24 71.5 r25 +271.0 d25 2.7 n16 1.5168 Nu 16 64.2 r26 -165.7 d26 7.8 r27 -75.9 d27 1.4 n17 1.76684 Nu 17 46.6 r28 +51.5 d28 4.8 n18 1.59507 Nu 18 35.6 r29 -97.9
References Cited (Backward Citations)
US3501224A
Cited
US3615125A
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |