Patent US5283684A successfully refreshed from Google Patents.
US5283684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing confocal microscope components
Assignee: Wayne State University
•
Filing: 1992-07-31
•
Granted: 1994-02-01
•
Expires: 2012-07-31
Abstract
Abstract A method for constructing a Nipkow disk using a zone plate disk, comprises the steps of constructing a zone plate disk, including the substep of disposing a plurality of focusing means a long a disk, wherein the plurality of focusing means have a common focal distance; placing a photographic plate at the focal distance of the plurality of focusing means; illuminating the plurality of focusing means with a light source such that the illumination is passed through the plurality of focusing means and focused onto the photographic plate thereby creating an image of a plurality of points of focused illumination; and capturing the image created on the photographic plate and using it to construct the Nipkow disk.
Inventors
- 👤 Robert L. Thomas
- 👤 Lawrence D. Favro
- 👤 Pao-Kuang Kuo
- 👤 Li Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:07
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/002; G02B21/0024; G02B21/0036; G02B21/0044; G02B21/0032; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
For use in a confocal microscope, a method for constructing a Nipkow disk using a zone plate disk, including the steps of: (A) constructing a zone plate disk, including the substep of disposing a plurality of focusing means along a disk, wherein said plurality of focusing means have a common focal distance, (B) placing a photographic plate at the focal distance of said plurality of focusing means, (C) illuminating said plurality of focusing means with a light source such that the illumination is passed through said plurality of focusing means and focused onto the photographic plate thereby creating an image of a plurality of points of focused illumination, and (D) capturing the image created on the photographic plate illuminated in step (C) and using it to construct the Nipkow disk.
Claim 2
Dependent Claim
130 words
For use in a confocal microscope, a method for constructing a Nipkow disk using a zone plate disk, including the steps of: (A) constructing a zone plate disk, including the substep of disposing a plurality of focusing means along a disk, wherein said plurality of focusing means have a common focal distance, (B) placing a photographic plate at the focal distance of said plurality of focusing means, (C) illuminating said plurality of focusing means with a light source such that the illumination is passed through said plurality of focusing means and focused onto the photographic plate thereby creating an image of a plurality of points of focused illumination, and (D) capturing the image created on the photographic plate illuminated in step (C) and using it to construct the Nipkow disk.
Claim 3
Dependent Claim
20 words
The method of claim 1, wherein the step (C) includes illuminating said zone plate disk with a collimated laser beam.
Claim 4
Dependent Claim
20 words
The method of claim 1, wherein the step (C) includes rotating said zone plate disk about an axis of rotation.
Claim 5
Dependent Claim
31 words
The method of claim 1, wherein said focusing means is selected from the group consisting of a Fresnel zone plate, a Fresnel lens, a micro lens, and a micro funnel concentrator.
References Cited (Backward Citations)
US3013467A
Cited
US3853398A
Cited
US4312330A
Cited
US4824229A
Cited
US4787722A
Cited
US5022743A
Cited
US4802748A
Cited
US4925284A
Cited
US5067805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-31 | 1997-08-02 | 1998-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-31 | 2001-08-02 | 2002-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-31 | 2005-08-02 | 2006-02-01 | $7700.00 | Window Closed / Lapsed |