US5235441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic lenses
Assignee: Individual
•
Filing: 1992-06-11
•
Granted: 1993-08-10
•
Expires: 2012-06-11
Abstract
Abstract A method of constructing holographic lenses for correction of a person's deficiencies comprises splitting a filtered laser beam onto an object under consideration and thence to a photographic film, and simultaneously conducting the other beam to the film as a reference whereby the interference patterns between the two beams form a hologram which is developed by ordinary photographic process. The hologram can be visualized by the user of the lens when the reference beam is conducted to the developed film. The lenses are individualized to correct for the particular optical deficiencies of a user by varying the focal distance.
Inventors
- 👤 Spyros Georgaras
- 👤 Chris Tripos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32; A; A61; A61F; A61F9/00; A61F9/02; A61F9/022; G02C; G02C7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A method of making flat holographic eyeglass lenses for the correction of a user's ametropia comprising the steps of: determining an appropriate focal distance for said correction of ametropia; then simultaneously reflecting a first coherent light beam as an object beam onto a flat photographic film and a second coherent light beam onto said film whereby a hologram is produced having said appropriate focal distance and developing the film by ordinary photographic process thereby creating a lens with a refractory area with a diameter of one to four centimeters, which is free from subtending the entire portion of the eyeglass lens.
Claim 2
Independent Claim
101 words
A method of making flat holographic eyeglass lenses for the correction of a user's ametropia comprising the steps of: determining an appropriate focal distance for said correction of ametropia; then simultaneously reflecting a first coherent light beam as an object beam onto a flat photographic film and a second coherent light beam onto said film whereby a hologram is produced having said appropriate focal distance and developing the film by ordinary photographic process thereby creating a lens with a refractory area with a diameter of one to four centimeters, which is free from subtending the entire portion of the eyeglass lens.
Claim 3
Dependent Claim
36 words
The method of claim 1 wherein said first and second coherent light beams are generated by a single laser having an output into a beam splitter from which said first and second coherent light beams emanate.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein said first coherent light beam reflected from said object is a convergent spherical wave.
Claim 5
Dependent Claim
38 words
The method of claim 1 wherein said first coherent light beam reflected from said object is a divergent spherical wave such that it appears to be a single joint light source at a certain distance from the film.
Claim 6
Dependent Claim
33 words
The method of claim 1 further comprising the step of shining said second coherent light beam on said developed film whereby a focused image of the hologram is produced at the user's eye.
Claim 7
Dependent Claim
10 words
A holographic lens produced by the method of claim 1.
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) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |