Patent US155390A successfully refreshed from Google Patents.
Patent US4417787A successfully refreshed from Google Patents.
US4417787A
Expired / Lapsed
US
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Five-component microscope objective
Assignee: C Reichert Optische Werke AG
•
Filing: 1981-11-16
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Granted: 1983-11-29
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Expires: 2001-11-16
Abstract
Abstract An infinity-corrected, semi-apochromatic microscope objective having an N.A. of 0.85 has five elements and provides a magnification of 50× when used with a telescope objective having an effective focal length (efl) of 183 mm.
Inventors
- 👤 Lambert J. Danner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:36
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A sem: apochromatic microscope objective having an N.A. of substantially 0.85 which comprises a concavo-convex singlet I, a bi-convex singlet II, a plano convex doublet III, a bi-convex doublet IV, and a convex-concavo doublet V aligned sequentially on an optical axis and having the following parameters: ______________________________________
Index of Abbe
Lens Thick- Spac- Refraction
No.
No. Radius (R) ness (T) ing (S)
(ND) (ν)
______________________________________
S.sub.0 =0.794
R.sub.1 =-2.0075
I T.sub.1 =3.15
ND.sub.1 =1.78161
ν.sub.1 =37.08
R.sub.2 =-2.8929
S.sub.1 =0.30
R.sub.3 =25.935
II T.sub.2 =3.20
ND.sub.2 =1.564
ν.sub.2 =60.80
R.sub.4 =-10.411
S.sub.2 =0.30
R.sub.5 =∞
T.sub.3 =1.80
ND.sub.3 =1.673
ν.sub.3 =32.20
III R.sub.6 =8.498
T.sub.4 =5.00
ND.sub.4 =1.434
ν.sub.4 =95.58
R.sub.7 =-8.184
S.sub.3=0.50
R.sub.8 =109.720
T.sub.5 =2.80
ND.sub.5 =1.717
ν.sub. 5 =29.50
IV R.sub.9 =8.498
T.sub.6 =5.00
ND.sub.6 =1.434
ν.sub.6 =95.58
R.sub.10 =-15.435
S.sub.4 =12.70
R.sub.11 =15.435
T.sub.7 =5.10
ND.sub.7 =1.762
ν.sub.7 =26.94
V R.sub.12 =-15.435
T.sub.8 =6.50
ND.sub.8 =1.673
ν.sub.8 =32.20
R.sub.13 =7.735
______________________________________
Claim 2
Dependent Claim
155 words
A sem: apochromatic microscope objective having an N.A. of substantially 0.85 which comprises a concavo-convex singlet I, a bi-convex singlet II, a plano convex doublet III, a bi-convex doublet IV, and a convex-concavo doublet V aligned sequentially on an optical axis and having the following parameters: ______________________________________
Index of Abbe
Lens Thick- Spac- Refraction
No.
No. Radius (R) ness (T) ing (S)
(ND) (ν)
______________________________________
S.sub.0 =0.794
R.sub.1 =-2.0075
I T.sub.1 =3.15
ND.sub.1 =1.78161
ν.sub.1 =37.08
R.sub.2 =-2.8929
S.sub.1 =0.30
R.sub.3 =25.935
II T.sub.2 =3.20
ND.sub.2 =1.564
ν.sub.2 =60.80
R.sub.4 =-10.411
S.sub.2 =0.30
R.sub.5 =∞
T.sub.3 =1.80
ND.sub.3 =1.673
ν.sub.3 =32.20
III R.sub.6 =8.498
T.sub.4 =5.00
ND.sub.4 =1.434
ν.sub.4 =95.58
R.sub.7 =-8.184
S.sub.3=0.50
R.sub.8 =109.720
T.sub.5 =2.80
ND.sub.5 =1.717
ν.sub. 5 =29.50
IV R.sub.9 =8.498
T.sub.6 =5.00
ND.sub.6 =1.434
ν.sub.6 =95.58
R.sub.10 =-15.435
S.sub.4 =12.70
R.sub.11 =15.435
T.sub.7 =5.10
ND.sub.7 =1.762
ν.sub.7 =26.94
V R.sub.12 =-15.435
T.sub.8 =6.50
ND.sub.8 =1.673
ν.sub.8 =32.20
R.sub.13 =7.735
______________________________________
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |