US3759155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of photographic color recording
Assignee: Agfa Gevaert AG
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Filing: 1972-01-10
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Granted: 1973-09-18
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Expires: 1992-01-10
Abstract
Abstract A photographic objective, in whose plane a set of filter strips associated with different colors is located, forms an image on a black and white film while the lens elements of a lenticular grating form images of the set of colored strips on the corresponding areas of the film. All strip images together form a strip grating on the film so that the image formed by the objective can be reproduced as a color picture by the diffraction orders of the strip grating.
Inventors
- 👤 F Bestenreiner
- 👤 R Deml
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:25
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/4233; G02B27/4238; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B33/00; G03B33/10; G03B35/00; G03B35/18; G03B35/24; G03C; G03C5/00; G03C5/02; G03C7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A method of photographic color recording and reproduction, comprising the steps of forming by an objective a photographic object image on a photosensitive surface which is sensitive to white light; forming by a lenticular grating having a frequency of at least 60 lines per millimeter a plurality of color images of a set of differently colored filter strips located at least behind parts of the objective so that said strips absorb the respective color components of light and strip grating composed of the images of said strips is recorded on said photosensitive surface and is overlapped by the object image on said surface; developing said photosensitive surface; and reproducing said object image on the developed photosensitive surface as a color picture by the diffraction orders of said strip grating.
Claim 2
Independent Claim
129 words
A method of photographic color recording and reproduction, comprising the steps of forming by an objective a photographic object image on a photosensitive surface which is sensitive to white light; forming by a lenticular grating having a frequency of at least 60 lines per millimeter a plurality of color images of a set of differently colored filter strips located at least behind parts of the objective so that said strips absorb the respective color components of light and strip grating composed of the images of said strips is recorded on said photosensitive surface and is overlapped by the object image on said surface; developing said photosensitive surface; and reproducing said object image on the developed photosensitive surface as a color picture by the diffraction orders of said strip grating.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1, wherein said filter strips have different widths.
Claim 4
Dependent Claim
15 words
A method as defined in claim 1, wherein said filter strips have different angular positions.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |