US4264139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens system for facsimile
Assignee: Olympus Corp
•
Filing: 1979-10-04
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Granted: 1981-04-28
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Expires: 1999-10-04
Abstract
Abstract A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third lens component consisting of a negative lens element and a positive lens element, said lens system having high OTF and assuring very low distortion as well as high intensity for marginal rays.
Inventors
- 👤 Haruo Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:24
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.3169
d.sub.1 = 0.0779
n.sub.1 = 1.64852
ν.sub.1 = 53.2
r.sub.2 = -11.8835
d.sub.2 = 0.0432
r.sub.3 = -0.7002
d.sub.3 = 0.0188
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 = 0.2825
d.sub.4 = 0.0671
r.sub.5 = -2.4987
d.sub.5 = 0.0228
n.sub.3 = 1.53172
ν.sub.3 = 48.9
r.sub.6 = 0.3458
d.sub.6 = 0.0819
n.sub.4 = 1.65844
ν.sub.4 = 50.9
r.sub.7 = -0.4796
f = 1.0 F/5.0 β = -0.203
f.sub.2 = -0.3373
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 2
Dependent Claim
189 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.3169
d.sub.1 = 0.0779
n.sub.1 = 1.64852
ν.sub.1 = 53.2
r.sub.2 = -11.8835
d.sub.2 = 0.0432
r.sub.3 = -0.7002
d.sub.3 = 0.0188
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 = 0.2825
d.sub.4 = 0.0671
r.sub.5 = -2.4987
d.sub.5 = 0.0228
n.sub.3 = 1.53172
ν.sub.3 = 48.9
r.sub.6 = 0.3458
d.sub.6 = 0.0819
n.sub.4 = 1.65844
ν.sub.4 = 50.9
r.sub.7 = -0.4796
f = 1.0 F/5.0 β = -0.203
f.sub.2 = -0.3373
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 3
Dependent Claim
188 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.5134
d.sub.1 = 0.1252
n.sub.1 = 1.64852
ν.sub.1 = 53.2
r.sub.2 = ∞
d.sub.2 = 0.1247
r.sub.3 = -0.5046
d.sub.3 = 0.0252
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 =0.3731
d.sub.4 = 0.0883
r.sub.5 = 2.4257
d.sub.5 = 0.0247
n.sub.3 = 1.53172
ν.sub.3 = 48.9
r.sub.6 = 0.4821
d.sub.6 = 0.1033
n.sub.4 = 1.69350
ν.sub.4 = 53.23
r.sub.7 = -0.4360
f = 1.0 F/4.0 β = -0.104
f.sub.2 = -0.3581
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designates thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 4
Dependent Claim
188 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.5134
d.sub.1 = 0.1252
n.sub.1 = 1.64852
ν.sub.1 = 53.2
r.sub.2 = ∞
d.sub.2 = 0.1247
r.sub.3 = -0.5046
d.sub.3 = 0.0252
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 =0.3731
d.sub.4 = 0.0883
r.sub.5 = 2.4257
d.sub.5 = 0.0247
n.sub.3 = 1.53172
ν.sub.3 = 48.9
r.sub.6 = 0.4821
d.sub.6 = 0.1033
n.sub.4 = 1.69350
ν.sub.4 = 53.23
r.sub.7 = -0.4360
f = 1.0 F/4.0 β = -0.104
f.sub.2 = -0.3581
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designates thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 5
Dependent Claim
188 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.38149
d.sub.1 = 0.1262
n.sub.1 = 1.65160
ν.sub.1 = 58.67
r.sub.2 = ∞
d.sub.2 = 0.0675
r.sub.3 = -0.66341
d.sub.3 = 0.0279
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 = 0.31361
d.sub.4 = 0.0675
r.sub.5 = ∞
d.sub.5 = 0.0279
n.sub.3 = 1.53172
ν.sub.3 = 48.90
r.sub.6 = 0.35224
d.sub.6 = 0.1076
n.sub.4 = 1.69350
ν.sub.4 = 53.23
r.sub.7 = -0.52935
f = 1.0 F/5.0 β= -0.120
f.sub.2 = -0.355
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 6
Dependent Claim
188 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.38149
d.sub.1 = 0.1262
n.sub.1 = 1.65160
ν.sub.1 = 58.67
r.sub.2 = ∞
d.sub.2 = 0.0675
r.sub.3 = -0.66341
d.sub.3 = 0.0279
n.sub.2 = 1.59270
ν.sub.2 = 35.29
r.sub.4 = 0.31361
d.sub.4 = 0.0675
r.sub.5 = ∞
d.sub.5 = 0.0279
n.sub.3 = 1.53172
ν.sub.3 = 48.90
r.sub.6 = 0.35224
d.sub.6 = 0.1076
n.sub.4 = 1.69350
ν.sub.4 = 53.23
r.sub.7 = -0.52935
f = 1.0 F/5.0 β= -0.120
f.sub.2 = -0.355
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 7
Dependent Claim
189 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.43365
d.sub.1 = 0.1398
n.sub.1 = 1.72916
ν.sub.1 = 54.68
r.sub.2 = -22.28522
d.sub.2 = 0.524
r.sub.3 = -0.82723
d.sub.3 = 0.0367
n.sub.2 = 1.62588
ν.sub.2 = 35.70
r.sub.4 = 0.35572
d.sub.4 = 0.0743
r.sub.5 = -241.3313
d.sub.5 = 0.0393
n.sub.3 = 1.53172
ν.sub.3 = 48.90
r.sub.6 = 0.45332
d.sub.6 = 0.1258
n.sub.4 = 1.69680
ν.sub.4 = 55.52
r.sub.7 = -0.57986
f = 1.0 F/4.0 β = -0.084
f.sub.2 = 0.393
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
Claim 8
Dependent Claim
189 words
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third cemented doublet component consisting of a negative lens element and a positive lens element, and said lens system having the following numerical data: ______________________________________
r.sub.1 = 0.43365
d.sub.1 = 0.1398
n.sub.1 = 1.72916
ν.sub.1 = 54.68
r.sub.2 = -22.28522
d.sub.2 = 0.524
r.sub.3 = -0.82723
d.sub.3 = 0.0367
n.sub.2 = 1.62588
ν.sub.2 = 35.70
r.sub.4 = 0.35572
d.sub.4 = 0.0743
r.sub.5 = -241.3313
d.sub.5 = 0.0393
n.sub.3 = 1.53172
ν.sub.3 = 48.90
r.sub.6 = 0.45332
d.sub.6 = 0.1258
n.sub.4 = 1.69680
ν.sub.4 = 55.52
r.sub.7 = -0.57986
f = 1.0 F/4.0 β = -0.084
f.sub.2 = 0.393
______________________________________ wherein the reference symbols r 1 through r 7 represent radii of curvature on the surfaces of the respective lens elements, the reference symbols d 1 through d 6 designate thicknesses of the respective lens elements and airspaces therebetween, the reference symbols n 1 through n 4 denote refractive indices of the respective lens elements and the reference symbols ν 1 through ν 4 represent Abbe's numbers of the respective lens elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |