US5315440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zoom lens having weak front lens group
Assignee: Eastman Kodak Co
•
Filing: 1991-11-04
•
Granted: 1994-05-24
•
Expires: 2011-11-04
Abstract
Abstract A zoom lens having two groups of lens components including from the object side a positive group and a negative group. The positive group includes two lens units, a weak unit, and a positive unit, while the negative group has at least one negative lens component and provides most of the magnification change during zooming.
Inventors
- 👤 Ellis I. Betensky
- 👤 Melvyn H. Kreitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:56
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/16
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
160 words
A zoom lens comprising two groups of lens components including, from the object side, a first positive group and a second negative group and which zoom lens achieves zooming between a wide angle position and a narrow angle position by changing a distance between the first and the second groups, said first group including two lens units, a first, weak unit having no strong lens component, said weak first unit positioned on the object side of said first group and a second positive unit following said first unit, said second group having negative power and providing most of the magnification change during zooming, wherein none of said lens components are made of a gradient index material, said zoom lens satisfying the following condition ##EQU2## where K 1 is the power of the first unit and K w is the power of the zoom lens at its wide angle position, and wherein said weak unit is a single negative lens component.
Claim 2
Dependent Claim
160 words
A zoom lens comprising two groups of lens components including, from the object side, a first positive group and a second negative group and which zoom lens achieves zooming between a wide angle position and a narrow angle position by changing a distance between the first and the second groups, said first group including two lens units, a first, weak unit having no strong lens component, said weak first unit positioned on the object side of said first group and a second positive unit following said first unit, said second group having negative power and providing most of the magnification change during zooming, wherein none of said lens components are made of a gradient index material, said zoom lens satisfying the following condition ##EQU2## where K 1 is the power of the first unit and K w is the power of the zoom lens at its wide angle position, and wherein said weak unit is a single negative lens component.
Claim 3
Dependent Claim
17 words
A zoom lens according to claim 1 wherein the first unit has at least one aspheric surface.
Claim 4
Dependent Claim
21 words
A zoom lens according to claim 2 wherein an aperture stop is positioned toward the object side from the second unit.
Claim 5
Dependent Claim
21 words
A zoom lens according to claim 1 wherein the ratio of |K 1 |/K w is equal to 0.1 or less.
Claim 6
Dependent Claim
21 words
A zoom lens according to claim 4 wherein an aperture stop is positioned toward the object side from the second unit.
Claim 7
Dependent Claim
21 words
A zoom lens according to claim 1 wherein an aperture stop is positioned toward the object side from the second unit.
Claim 8
Dependent Claim
15 words
A zoom lens according to claim 1 wherein the second group consists of a doublet.
Claim 9
Dependent Claim
29 words
A zoom lens according to claim 1 wherein said second unit includes at least one negative lens element providing substantially all of the color correction of the first group.
Claim 10
Dependent Claim
21 words
A zoom lens according to claim 1 wherein the space between said first unit and said second unit varies during zooming.
Claim 11
Dependent Claim
23 words
A zoom lens according to claim 1 wherein the space between said first unit and said second unit does not vary during zooming.
Claim 12
Dependent Claim
22 words
A zoom lens according to claim 1 wherein said first optical unit is a single element having at least one aspheric surface.
Claim 13
Dependent Claim
20 words
A zoom lens according to claim 11 wherein the ratio |K 1 |/K w is equal to 0.1 or less.
Claim 14
Dependent Claim
152 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -50.25 1.50 1.5949 30.7
R.sub.2 -80.44 3.33
Diaphragm
∞ 2.51
R.sub.3 -81.95 1.50 1.5949 30.7
R.sub.4 24.91 .05
R.sub.5 22.92 3.30 1.4938 56.9
R.sub.6 -22.68 .20
R.sub.7 -140.58 3.30 1.4938 56.9
R.sub.8 -16.55 Variable
R.sub.9 -67.64 2.50 1.5949 30.7
R.sub.10 -18.43 3.20
R.sub.11 -10.94 2.00 1.5387 40.2
R.sub.12 53.26 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 9.154E-06 8.379E-07 3.433E-09
R.sub.2 8.732E-05 1.241E-06 1.112E-08
R.sub.11
-2.376E-05 5.626E-08 -3.937E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 9.794E-12 -3.311E-12 3.037E-14
R.sub.2 -1.748E-10 1.570E-12 1.056E-14
R.sub.11
1.637E-11 2.414E-13 -1.880E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 11.43 15.0 39.00
4.4
2 3.91 39.4 60.0 6.3
3 0.10 65.9 82.6 6.6
______________________________________
Claim 15
Dependent Claim
152 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -50.25 1.50 1.5949 30.7
R.sub.2 -80.44 3.33
Diaphragm
∞ 2.51
R.sub.3 -81.95 1.50 1.5949 30.7
R.sub.4 24.91 .05
R.sub.5 22.92 3.30 1.4938 56.9
R.sub.6 -22.68 .20
R.sub.7 -140.58 3.30 1.4938 56.9
R.sub.8 -16.55 Variable
R.sub.9 -67.64 2.50 1.5949 30.7
R.sub.10 -18.43 3.20
R.sub.11 -10.94 2.00 1.5387 40.2
R.sub.12 53.26 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 9.154E-06 8.379E-07 3.433E-09
R.sub.2 8.732E-05 1.241E-06 1.112E-08
R.sub.11
-2.376E-05 5.626E-08 -3.937E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 9.794E-12 -3.311E-12 3.037E-14
R.sub.2 -1.748E-10 1.570E-12 1.056E-14
R.sub.11
1.637E-11 2.414E-13 -1.880E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 11.43 15.0 39.00
4.4
2 3.91 39.4 60.0 6.3
3 0.10 65.9 82.6 6.6
______________________________________
Claim 16
Dependent Claim
171 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -38.87 1.38 1.5949 30.7
R.sub.2 -45.07 .04
Diaphragm
∞ 4.75
R.sub.3 -33.96 1.38 1.5949 30.7
R.sub.4 30.12 .05
R.sub.5 28.60 3.04 1.4938 56.9
R.sub.6 -19.72 .10
R.sub.7 -304.49 3.04 1.4938 56.9
R.sub.8 -13.93 Variable
R.sub.9 -35.00 3.38 1.5949 36.7
R.sub.10 -13.87 2.93
R.sub.11 -9.75 1.84 1.5387 40.2
R.sub.12 53.01 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 1.582E-05 1.977E-06 1.370E-08
R.sub.2 1.198E-04 2.615E-06 1.521E-08
R.sub.3 -1.238E-05 -1.538E-07 2.674E-09
R.sub.10
6.532E-06 -1.397E-07 -1.190E-09
R.sub.11
2.417E-05 -5.041E-08 -6.779E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 2.035E-10 -8.096E-12 -5.891E-14
R.sub.2 8.628E-10 -7.193E- 12 -2.013E-13
R.sub.3 7.382E-11 -2.453E-13 -4.134E-14
R.sub.10
-7.419E-12 -1.132E-14 1.729E-15
R.sub.11
3.424E-13 2.950E-13 6.475E-16
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.10
-1.000E+00
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 10.15 14.0 36.0 4.4
2 3.59 36.0 55.0 6.3
3 0.05 62.0 77.0 6.8
______________________________________
Claim 17
Dependent Claim
171 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -38.87 1.38 1.5949 30.7
R.sub.2 -45.07 .04
Diaphragm
∞ 4.75
R.sub.3 -33.96 1.38 1.5949 30.7
R.sub.4 30.12 .05
R.sub.5 28.60 3.04 1.4938 56.9
R.sub.6 -19.72 .10
R.sub.7 -304.49 3.04 1.4938 56.9
R.sub.8 -13.93 Variable
R.sub.9 -35.00 3.38 1.5949 36.7
R.sub.10 -13.87 2.93
R.sub.11 -9.75 1.84 1.5387 40.2
R.sub.12 53.01 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 1.582E-05 1.977E-06 1.370E-08
R.sub.2 1.198E-04 2.615E-06 1.521E-08
R.sub.3 -1.238E-05 -1.538E-07 2.674E-09
R.sub.10
6.532E-06 -1.397E-07 -1.190E-09
R.sub.11
2.417E-05 -5.041E-08 -6.779E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 2.035E-10 -8.096E-12 -5.891E-14
R.sub.2 8.628E-10 -7.193E- 12 -2.013E-13
R.sub.3 7.382E-11 -2.453E-13 -4.134E-14
R.sub.10
-7.419E-12 -1.132E-14 1.729E-15
R.sub.11
3.424E-13 2.950E-13 6.475E-16
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.10
-1.000E+00
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 10.15 14.0 36.0 4.4
2 3.59 36.0 55.0 6.3
3 0.05 62.0 77.0 6.8
______________________________________
Claim 18
Dependent Claim
171 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -28.22 1.38 1.5949 30.7
R.sub.2 -26.38 .04
Diaphragm
∞ 5.22
R.sub.3 -30.32 1.38 1.5949 30.7
R.sub.4 35.63 .14
R.sub.5 34.98 3.20 1.4938 56.9
R.sub.6 -19.43 .10
R.sub.7 424.75 3.20 1.4938 56.9
R.sub.8 -15.21 Variable
R.sub.9 -30.75 3.38 1.5949 36.7
R.sub.10 -13.02 2.61
R.sub.11 -9.60 1.84 1.5387 40.2
R.sub.12 51.62 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
S.sub.1 -7.800E-05 2.267E-06 2.616E-08
S.sub.2 2.022E-06 2.554E-06 2.212E-08
S.sub.3 -1.698E-05 -1.968E-07 -3.402E-10
S.sub.10
1.654E-05 -1.717E-07 -1.062E-09
S.sub.11
3.965E-05 -1.210E-07 -6.236E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
S.sub.1 4.634E-10 -8.507E-12 -4.889E-14
S.sub.2 7.913E-10 - 4.300E-12 -1.361E-13
S.sub.3 1.310E-10 -7.463E-14 -5.706E-14
S.sub.10
-4.571E-12 -1.848E-14 1.134E-15
S.sub.11
3.440E-12 2.935E-13 -3.494E-16
______________________________________
SURFACE Conic Constants
______________________________________
S.sub.10
-1.000E+00
S.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.65 14.0 36.0 4.4
2 3.42 36.0 55.0 6.3
3 0.05 61.0 77.0 6.8
______________________________________
Claim 19
Dependent Claim
171 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -28.22 1.38 1.5949 30.7
R.sub.2 -26.38 .04
Diaphragm
∞ 5.22
R.sub.3 -30.32 1.38 1.5949 30.7
R.sub.4 35.63 .14
R.sub.5 34.98 3.20 1.4938 56.9
R.sub.6 -19.43 .10
R.sub.7 424.75 3.20 1.4938 56.9
R.sub.8 -15.21 Variable
R.sub.9 -30.75 3.38 1.5949 36.7
R.sub.10 -13.02 2.61
R.sub.11 -9.60 1.84 1.5387 40.2
R.sub.12 51.62 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
S.sub.1 -7.800E-05 2.267E-06 2.616E-08
S.sub.2 2.022E-06 2.554E-06 2.212E-08
S.sub.3 -1.698E-05 -1.968E-07 -3.402E-10
S.sub.10
1.654E-05 -1.717E-07 -1.062E-09
S.sub.11
3.965E-05 -1.210E-07 -6.236E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
S.sub.1 4.634E-10 -8.507E-12 -4.889E-14
S.sub.2 7.913E-10 - 4.300E-12 -1.361E-13
S.sub.3 1.310E-10 -7.463E-14 -5.706E-14
S.sub.10
-4.571E-12 -1.848E-14 1.134E-15
S.sub.11
3.440E-12 2.935E-13 -3.494E-16
______________________________________
SURFACE Conic Constants
______________________________________
S.sub.10
-1.000E+00
S.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.65 14.0 36.0 4.4
2 3.42 36.0 55.0 6.3
3 0.05 61.0 77.0 6.8
______________________________________
Claim 20
Dependent Claim
170 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -22.20 1.70 1.5949 30.7
R.sub.2 -20.62 1.20
Diaphragm
∞ 5.44
R.sub.3 -21.97 1.38 1.5949 30.7
R.sub.4 66.89 .02
R.sub.5 71.02 3.30 1.4938 56.9
R.sub.6 -17.60 .10
R.sub.7 71.02 3.30 1.4938 56.9
R.sub.8 -17.60 Variable
R.sub.9 -32.76 3.39 1.5949 30.7
R.sub.10 -14.05 2.65
R.sub.11 -10.12 3.00 1.5387 40.2
R.sub.12 54.77 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -7.379E-05 2.331E-06 -2.573E-08
R.sub.2 -2.041E-05 3.435E-06 -9.674E-08
R.sub.3 -1.814E-05 2.117E-07 -1.381E-08
R.sub.10
9.443E-06 9.630E-08 -8.402E-09
R.sub.11
2.147E-05 3.209E-07 -1.556E-08
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 -1.012E-10 1.198E-11 -1.005E-13
R.sub.2 2.771E-09 -5.493E-11 5.710E-13
R.sub.3 1.838E-10 -9.057E-12 1.396E-13
R.sub.10
1.818E-11 7.751E-13 -4.016E-15
R.sub.11
2.916E-13 1.723E-12 -8.507E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.7 -1.000E+00
R.sub.8 -1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.83 14.0 37.0 4.6
2 3.87 35.0 55.0 6.4
3 0.37 61.0 77.0 6.8
______________________________________
Claim 21
Dependent Claim
170 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -22.20 1.70 1.5949 30.7
R.sub.2 -20.62 1.20
Diaphragm
∞ 5.44
R.sub.3 -21.97 1.38 1.5949 30.7
R.sub.4 66.89 .02
R.sub.5 71.02 3.30 1.4938 56.9
R.sub.6 -17.60 .10
R.sub.7 71.02 3.30 1.4938 56.9
R.sub.8 -17.60 Variable
R.sub.9 -32.76 3.39 1.5949 30.7
R.sub.10 -14.05 2.65
R.sub.11 -10.12 3.00 1.5387 40.2
R.sub.12 54.77 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -7.379E-05 2.331E-06 -2.573E-08
R.sub.2 -2.041E-05 3.435E-06 -9.674E-08
R.sub.3 -1.814E-05 2.117E-07 -1.381E-08
R.sub.10
9.443E-06 9.630E-08 -8.402E-09
R.sub.11
2.147E-05 3.209E-07 -1.556E-08
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 -1.012E-10 1.198E-11 -1.005E-13
R.sub.2 2.771E-09 -5.493E-11 5.710E-13
R.sub.3 1.838E-10 -9.057E-12 1.396E-13
R.sub.10
1.818E-11 7.751E-13 -4.016E-15
R.sub.11
2.916E-13 1.723E-12 -8.507E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.7 -1.000E+00
R.sub.8 -1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.83 14.0 37.0 4.6
2 3.87 35.0 55.0 6.4
3 0.37 61.0 77.0 6.8
______________________________________
Claim 22
Dependent Claim
164 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -92.43 1.38 1.5949 30.7
R.sub.2 -107.93 3.07
Diaphragm
∞ Variable
R.sub.3 -193.80 1.38 1.5949 30.7
R.sub.4 21.35 .24
R.sub.5 28.37 3.04 1.4938 56.9
R.sub.6 -23.74 .00
R.sub.7 324.72 3.04 1.4938 56.9
R.sub.8 -14.41 Variable
R.sub.9 -49.77 3.38 1.5949 30.7
R.sub.10 -15.50 2.11
R.sub.11 -10.14 1.84 1.5387 40.2
R.sub.12 32.88 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 1.914E-05 1.402E-06 5.820E-09
R.sub.2 1.039E-04 1.852E-06 2.193E-08
R.sub.8 1.794E-05 -2.615E-09 4.649E-09
R.sub.11
3.882E-06 9.640E-09 -3.517E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 1.113E-10 -6.374E-12 1.134E-13
R.sub.2 -3.461E-10 5.131E-12 1.021E-13
R.sub.8 1.596E-11 1.397E-12 -2.190E-14
R.sub.11
1.982E-11 2.084E-13 -2.099E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.2 S.sub.4
BFL EFL F/#
______________________________________
1 7.95 8.43 15.0 36.0 4.4
2 6.86 3.09 35.0 55.0 6.3
3 6.04 .20 60.0 77.0 6.8
______________________________________
Claim 23
Dependent Claim
164 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -92.43 1.38 1.5949 30.7
R.sub.2 -107.93 3.07
Diaphragm
∞ Variable
R.sub.3 -193.80 1.38 1.5949 30.7
R.sub.4 21.35 .24
R.sub.5 28.37 3.04 1.4938 56.9
R.sub.6 -23.74 .00
R.sub.7 324.72 3.04 1.4938 56.9
R.sub.8 -14.41 Variable
R.sub.9 -49.77 3.38 1.5949 30.7
R.sub.10 -15.50 2.11
R.sub.11 -10.14 1.84 1.5387 40.2
R.sub.12 32.88 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 1.914E-05 1.402E-06 5.820E-09
R.sub.2 1.039E-04 1.852E-06 2.193E-08
R.sub.8 1.794E-05 -2.615E-09 4.649E-09
R.sub.11
3.882E-06 9.640E-09 -3.517E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 1.113E-10 -6.374E-12 1.134E-13
R.sub.2 -3.461E-10 5.131E-12 1.021E-13
R.sub.8 1.596E-11 1.397E-12 -2.190E-14
R.sub.11
1.982E-11 2.084E-13 -2.099E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.2 S.sub.4
BFL EFL F/#
______________________________________
1 7.95 8.43 15.0 36.0 4.4
2 6.86 3.09 35.0 55.0 6.3
3 6.04 .20 60.0 77.0 6.8
______________________________________
Claim 24
Dependent Claim
155 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -17.45 2.08 1.5387 40.2
R.sub.2 -19.50 Variable
R.sub.3 36.30 1.50 1.5949 30.7
R.sub.4 12.02 6.30 1.4938 56.9
R.sub.5 -15.06 Variable
R.sub.6 -32.92 2.50 1.5949 30.7
R.sub.7 -18.64 3.42
R.sub.8 -12.39 2.00 1.4938 56.9
R.sub.9 42.68 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -4.986E-06 8.155E-07 1.223E-08
R.sub.2 2.179E-05 9.499E-07 8.386E-09
R.sub.5 -7.737E-06 -2.031E-07 -5.159E-10
R.sub.8 1.409E-05 -6.753E-08 -2.022E-10
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 9.304E-11 7.065E-14 -1.363E-14
R.sub.2 1.231E-10 4.337E-13 -1.015E-14
R.sub.5 4.186E-12 3.886E-14 -2.251E-15
R.sub.8 -4.991E-12 -1.114E-14 6.112E-16
SURFACE Conic Constants
______________________________________
R.sub.1 5.413E-01
R.sub.2 -2.056E-01
R.sub.5 -9.713E-01
R.sub.8 -7.335E-01
______________________________________
ZOOM SPACING DATA
POSITION S.sub.1 S.sub.2
BFL EFL F/#
______________________________________
1 8.58 9.62 15.14 39.01
4.4
2 7.24 3.38 38.27 60.02
6.3
3 6.22 .22 63.02 82.57
6.8
______________________________________
Claim 25
Dependent Claim
155 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -17.45 2.08 1.5387 40.2
R.sub.2 -19.50 Variable
R.sub.3 36.30 1.50 1.5949 30.7
R.sub.4 12.02 6.30 1.4938 56.9
R.sub.5 -15.06 Variable
R.sub.6 -32.92 2.50 1.5949 30.7
R.sub.7 -18.64 3.42
R.sub.8 -12.39 2.00 1.4938 56.9
R.sub.9 42.68 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -4.986E-06 8.155E-07 1.223E-08
R.sub.2 2.179E-05 9.499E-07 8.386E-09
R.sub.5 -7.737E-06 -2.031E-07 -5.159E-10
R.sub.8 1.409E-05 -6.753E-08 -2.022E-10
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 9.304E-11 7.065E-14 -1.363E-14
R.sub.2 1.231E-10 4.337E-13 -1.015E-14
R.sub.5 4.186E-12 3.886E-14 -2.251E-15
R.sub.8 -4.991E-12 -1.114E-14 6.112E-16
SURFACE Conic Constants
______________________________________
R.sub.1 5.413E-01
R.sub.2 -2.056E-01
R.sub.5 -9.713E-01
R.sub.8 -7.335E-01
______________________________________
ZOOM SPACING DATA
POSITION S.sub.1 S.sub.2
BFL EFL F/#
______________________________________
1 8.58 9.62 15.14 39.01
4.4
2 7.24 3.38 38.27 60.02
6.3
3 6.22 .22 63.02 82.57
6.8
______________________________________
Claim 26
Dependent Claim
170 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -22.12 1.38 1.5949 30.7
R.sub.2 -20.70 2.00
Diaphragm
∞ 3.57
R.sub.3 -26.01 1.38 1.5949 30.7
R.sub.4 43.83 .14
R.sub.5 40.45 3.20 1.4938 56.9
R.sub.6 -19.50 .10
R.sub.7 196.79 3.20 1.4938 56.9
R.sub.8 -15.32 Variable
R.sub.9 -29.12 3.38 1.5949 30.7
R.sub.10 -13.11 2.80
R.sub.11 -9.78 1.84 1.5387 40.2
R.sub.12 53.50 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -1.014E-04 1.832E-06 1.962E-08
R.sub.2 -3.027E-05 1.928E-06 1.354E-08
R.sub.3 -3.020E-05 -4.093E-07 -1.505E-09
R.sub.10
1.672E-05 -1.786E-07 -1.277E-09
R.sub.11
4.083E-05 -1.527E-07 -6.321E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 3.655E-10 -1.033E-11 -6.551E-14
R.sub.2 6.466E-10 -6.909E-12 -2.016E-13
R.sub.3 9.523E-11 -1.208E-12 -8.118E-14
R.sub.10
-5.269E-12 -1.302E-14 1.216E-15
R.sub.11
3.343E-12 3.000E-13 -4.536E-16
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.10
-1.000E+00
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.64 14.34 36.01
4.4
2 3.42 36.36 55.03
6.3
3 .05 62.03 77.07
6.8
______________________________________
Claim 27
Dependent Claim
170 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -22.12 1.38 1.5949 30.7
R.sub.2 -20.70 2.00
Diaphragm
∞ 3.57
R.sub.3 -26.01 1.38 1.5949 30.7
R.sub.4 43.83 .14
R.sub.5 40.45 3.20 1.4938 56.9
R.sub.6 -19.50 .10
R.sub.7 196.79 3.20 1.4938 56.9
R.sub.8 -15.32 Variable
R.sub.9 -29.12 3.38 1.5949 30.7
R.sub.10 -13.11 2.80
R.sub.11 -9.78 1.84 1.5387 40.2
R.sub.12 53.50 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 -1.014E-04 1.832E-06 1.962E-08
R.sub.2 -3.027E-05 1.928E-06 1.354E-08
R.sub.3 -3.020E-05 -4.093E-07 -1.505E-09
R.sub.10
1.672E-05 -1.786E-07 -1.277E-09
R.sub.11
4.083E-05 -1.527E-07 -6.321E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 3.655E-10 -1.033E-11 -6.551E-14
R.sub.2 6.466E-10 -6.909E-12 -2.016E-13
R.sub.3 9.523E-11 -1.208E-12 -8.118E-14
R.sub.10
-5.269E-12 -1.302E-14 1.216E-15
R.sub.11
3.343E-12 3.000E-13 -4.536E-16
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.10
-1.000E+00
R.sub.11
-1.000E+00
______________________________________
ZOOM SPACING DATA
POSITION S.sub.4
BFL EFL F/#
______________________________________
1 9.64 14.34 36.01
4.4
2 3.42 36.36 55.03
6.3
3 .05 62.03 77.07
6.8
______________________________________
Claim 28
Dependent Claim
155 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -27.61 1.17 1.5387 40.2
R.sub.2 -50.62 .20
Diaphragm
∞ 5.32
R.sub.3 32.83 1.50 1.5949 30.7
R.sub.4 11.05 6.30 1.4938 56.9
R.sub.5 -13.23 Variable
R.sub.6 -27.39 2.50 1.5949 30.7
R.sub.7 -15.90 4.56
R.sub.8 -9.67 2.00 1.4938 56.9
R.sub.9 82.07 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 3.021E-06 2.610E-06 1.113E-08
R.sub.2 8.277E-05 3.343E-06 2.637E-08
R.sub.5 -31.34E-05 -3.891E-07 1.916E-10
R.sub.8 -8.205E-06 -2.467E-07 2.442E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 2.785E-10 4.123E-13 -1.187E-13
R.sub.2 8.159E-11 -1.545E-12 1.204E-13
R.sub.5 -1.182E-11 -2.309E-13 -2.179E-15
R.sub.8 3.581E-12 -7.838E-13 6.153E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.1 5.413E-01
R.sub.2 -2.056E-01
R.sub.5 -9.713E-01
R.sub.8 -7.335E-01
______________________________________
ZOOM SPACING DATA
POSITION R.sub.5
BFL EFL F/#
______________________________________
1 9.12 14.89 39.00
4.4
2 3.21 37.11 60.00
6.3
3 .22 60.92 82.51
6.8
______________________________________
Claim 29
Dependent Claim
155 words
A zoom lens constructed substantially according to the following parameters ______________________________________
THICKNESS/
SURFACE RADIUS SPACING N.sub.e
V
______________________________________
R.sub.1 -27.61 1.17 1.5387 40.2
R.sub.2 -50.62 .20
Diaphragm
∞ 5.32
R.sub.3 32.83 1.50 1.5949 30.7
R.sub.4 11.05 6.30 1.4938 56.9
R.sub.5 -13.23 Variable
R.sub.6 -27.39 2.50 1.5949 30.7
R.sub.7 -15.90 4.56
R.sub.8 -9.67 2.00 1.4938 56.9
R.sub.9 82.07 Variable
______________________________________
POLYNOMIAL ASPHERS
(COEFFICIENTS OF THE EVEN POWERED TERMS)
SURFACE AD (4TH) AE (6TH) AF (8TH)
______________________________________
R.sub.1 3.021E-06 2.610E-06 1.113E-08
R.sub.2 8.277E-05 3.343E-06 2.637E-08
R.sub.5 -31.34E-05 -3.891E-07 1.916E-10
R.sub.8 -8.205E-06 -2.467E-07 2.442E-09
______________________________________
SURFACE AG (10TH) AH (12TH) AI (14TH)
______________________________________
R.sub.1 2.785E-10 4.123E-13 -1.187E-13
R.sub.2 8.159E-11 -1.545E-12 1.204E-13
R.sub.5 -1.182E-11 -2.309E-13 -2.179E-15
R.sub.8 3.581E-12 -7.838E-13 6.153E-15
______________________________________
SURFACE Conic Constants
______________________________________
R.sub.1 5.413E-01
R.sub.2 -2.056E-01
R.sub.5 -9.713E-01
R.sub.8 -7.335E-01
______________________________________
ZOOM SPACING DATA
POSITION R.sub.5
BFL EFL F/#
______________________________________
1 9.12 14.89 39.00
4.4
2 3.21 37.11 60.00
6.3
3 .22 60.92 82.51
6.8
______________________________________
Claim 30
Dependent Claim
166 words
A zoom lens comprising two groups of lens components including, from the object side, a first positive group and a second negative group and which zoom lens achieves zooming between a wide angle position and a narrow angle position by changing the distance between the first and the second groups, said first group including two lens units and an aperture stop, a first, weak unit having no strong lens component, said first unit being of negative power and having at least one aspheric surface, said first unit positioned on the object side of said first group and a second positive unit following said first unit, said aperture stop is positioned toward the object from said second unit, said second group having negative power and providing most of the magnification change during zooming, and said zoom lens satisfying the following condition ##EQU3## where K 1 is the power of the first unit and K w is the power of the zoom lens at its wide angle position.
Claim 31
Dependent Claim
166 words
A zoom lens comprising two groups of lens components including, from the object side, a first positive group and a second negative group and which zoom lens achieves zooming between a wide angle position and a narrow angle position by changing the distance between the first and the second groups, said first group including two lens units and an aperture stop, a first, weak unit having no strong lens component, said first unit being of negative power and having at least one aspheric surface, said first unit positioned on the object side of said first group and a second positive unit following said first unit, said aperture stop is positioned toward the object from said second unit, said second group having negative power and providing most of the magnification change during zooming, and said zoom lens satisfying the following condition ##EQU3## where K 1 is the power of the first unit and K w is the power of the zoom lens at its wide angle position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |