US4393126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing in-line hologram lens
Assignee: Sony Corp
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Filing: 1981-05-07
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Granted: 1983-07-12
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Expires: 2001-05-07
Abstract
Abstract A method of producing an inline hologram lens is disclosed which includes the steps of producing a diffracted wave beam by a diffraction device, producing a spherical wave beam by an optical device, providing the diffracted wave beam perpendicularly incident on a photo-sensitive layer as a reference wave beam, simultaneously providing a spherical wave beam perpendicularly incident on the photo-sensitive layer as a subject wave beam through the diffraction device, and developing the photo-sensitive layer to produce an inline hologram lens.
Inventors
- 👤 Chiaki Kojima
- 👤 Kayoko Hasegawa
- 👤 Kosuke Miyahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A method of producing an inline hologram lens, comprising the steps of: producing a coherent diffracted wave beam by diffraction means; producing a coherent spherical wave beam by objective lens means separate from said diffraction means; providing said diffracted wave beam perpendicularly incident on a photo-sensitive layer as a reference wave beam; simultaneously providing said spherical wave beam perpendicularly incident on said photo-sensitive layer as a subject wave beam through said diffraction means; and developing said photo-sensitive layer to produce said inline hologram lens.
Claim 2
Independent Claim
84 words
A method of producing an inline hologram lens, comprising the steps of: producing a coherent diffracted wave beam by diffraction means; producing a coherent spherical wave beam by objective lens means separate from said diffraction means; providing said diffracted wave beam perpendicularly incident on a photo-sensitive layer as a reference wave beam; simultaneously providing said spherical wave beam perpendicularly incident on said photo-sensitive layer as a subject wave beam through said diffraction means; and developing said photo-sensitive layer to produce said inline hologram lens.
Claim 3
Dependent Claim
26 words
A method of producing an inline hologram lens according to claim 1, wherein said objective lens means includes an objective lens with a large numerical aperture.
Claim 4
Dependent Claim
123 words
A method of producing an inline hologram lens according to claim 2, wherein said step of producing a diffracted wave beam includes the steps of: recording on a second photo-sensitive layer a graphic interference pattern which results from simultaneous exposure of said second photo-sensitive layer to a first plane wave beam as a reference wave beam and a second plane wave beam as a subject wave beam, said beams being off-axis in respect to each other, with said subject wave beam being incident perpendicular to said second photo-sensitive layer; developing said second photo-sensitive layer to form off-axis hologram means; positioning said off-axis hologram means parallel to said first-mentioned photo-sensitive layer; and providing an off-axis reference wave beam incident on said off-axis hologram means.
Claim 5
Dependent Claim
131 words
A method of producing an inline hologram lens according to claim 2, wherein said step of producing a diffracted wave beam includes the steps of: recording on a second photo-sensitive layer a graphic interference pattern which results from simultaneous exposure of said second photo-sensitive layer to a first plane wave beam as a reference wave beam and a spherical wave beam produced by a lens with a small numerical aperature as a subject wave beam, said beams being off-axis in respect to each other with said subject wave beam being incident perpendicular to said second photo-sensitive layer; developing said second photo-sensitive layer to form an off-axis hologram lens; positioning said off-axis hologram lens parallel to said photo-sensitive layer; and providing an off-axis reference wave beam incident on said off-axis hologram lens.
Claim 6
Dependent Claim
20 words
A method of producing an inline hologram lens according to claim 2, wherein said diffraction means is a diffraction grating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |