US4050778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-violet micrographic objective
Assignee: Bell and Howell Co
•
Filing: 1976-08-10
•
Granted: 1977-09-27
•
Expires: 1996-08-10
Abstract
Abstract An economical optical system without elements of more exotic optical materials for imaging light rays from an ultra-violet or near ultra-violet light source of an optical instrument.
Inventors
- 👤 Andor A. Fleischman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:33
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/14; G02B13/143; G02B13/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
270 words
An economically manufacturable optical system of relatively large effective aperture for efficiently transmitting rays in the ultra-violet portion of the spectrum, the optical system having substantially the following specifications: ______________________________________
EFL = 1.1751 inches (29.85 mm)
Half Angle of Field = 12.15°
spacing
Lens Radii(in.) Thickness(in.)
(in.) N.sub.D
V
______________________________________
L.sub.1
R.sub.1 =
1.7850 D.sub.1 = .1400 1.691
54.7
R.sub.2 =
-1.1450 S.sub.1 = .6410
L.sub.2
R.sub.3 =
1.4440 D.sub.2 = .3200 1.691
54.7
R.sub.4 =
7.2120 S.sub.2 = .0050
L.sub.3
R.sub.5 =
1.0360 D.sub.3 = .1970 1.691
54.7
R.sub.6 =
-1.9500 S.sub.3 = .2890
L.sub.4
R.sub.7 =
-30.0003 D.sub.4 =.0700 1.689
31.2
R.sub.8 =
-.6300 S.sub.4 = .1760
-- STOP --
S.sub.5 = .1380
L.sub.5
R.sub.9 =
120.0480 D.sub.5 = .0700
1.717
29.5
R.sub.10 =
-1.1450 S.sub.6 = 0
L.sub.6
R.sub.11 =
1.1450 D.sub.6 = .1400 1.734
51.7
R.sub.12 =
15.0900 S.sub.7 =.0050
L.sub.7
R.sub.13 =
1.1210 D.sub.7 = .3150 1.691
54.7
R.sub.14 =
27.1732 S.sub.8 = .0050
L.sub.8
R.sub.15 =
1.2920 D.sub.8 = .4990 1.691
54.7
R.sub.16 =
2.6603 S.sub.9 = .3240
L.sub.9
R.sub.17 =
-0.6160 D.sub.9 = .0550
S.sub.10 = .0094
1.498
67.1
R.sub.18 =
Inf. (BFL to
FILM
PLANE)
______________________________________ wherein the first column lists the lens elements numerically starting at the ray entrance side of the system; the second column lists the respective base radii R 1 to R 18 ; the third column lists the thicknesses of the respective elements; the fourth column lists the axial spacings S 1 to S 10 between respective elements; and the fourth and fifth columns list respectively the refractive index and the dispersive index of the optical material.
Claim 2
Dependent Claim
270 words
An economically manufacturable optical system of relatively large effective aperture for efficiently transmitting rays in the ultra-violet portion of the spectrum, the optical system having substantially the following specifications: ______________________________________
EFL = 1.1751 inches (29.85 mm)
Half Angle of Field = 12.15°
spacing
Lens Radii(in.) Thickness(in.)
(in.) N.sub.D
V
______________________________________
L.sub.1
R.sub.1 =
1.7850 D.sub.1 = .1400 1.691
54.7
R.sub.2 =
-1.1450 S.sub.1 = .6410
L.sub.2
R.sub.3 =
1.4440 D.sub.2 = .3200 1.691
54.7
R.sub.4 =
7.2120 S.sub.2 = .0050
L.sub.3
R.sub.5 =
1.0360 D.sub.3 = .1970 1.691
54.7
R.sub.6 =
-1.9500 S.sub.3 = .2890
L.sub.4
R.sub.7 =
-30.0003 D.sub.4 =.0700 1.689
31.2
R.sub.8 =
-.6300 S.sub.4 = .1760
-- STOP --
S.sub.5 = .1380
L.sub.5
R.sub.9 =
120.0480 D.sub.5 = .0700
1.717
29.5
R.sub.10 =
-1.1450 S.sub.6 = 0
L.sub.6
R.sub.11 =
1.1450 D.sub.6 = .1400 1.734
51.7
R.sub.12 =
15.0900 S.sub.7 =.0050
L.sub.7
R.sub.13 =
1.1210 D.sub.7 = .3150 1.691
54.7
R.sub.14 =
27.1732 S.sub.8 = .0050
L.sub.8
R.sub.15 =
1.2920 D.sub.8 = .4990 1.691
54.7
R.sub.16 =
2.6603 S.sub.9 = .3240
L.sub.9
R.sub.17 =
-0.6160 D.sub.9 = .0550
S.sub.10 = .0094
1.498
67.1
R.sub.18 =
Inf. (BFL to
FILM
PLANE)
______________________________________ wherein the first column lists the lens elements numerically starting at the ray entrance side of the system; the second column lists the respective base radii R 1 to R 18 ; the third column lists the thicknesses of the respective elements; the fourth column lists the axial spacings S 1 to S 10 between respective elements; and the fourth and fifth columns list respectively the refractive index and the dispersive index of the optical material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |