US4745327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color separation filter including monomolecular film layers of coupled dyestuff
Assignee: Mitsubishi Electric Corp
•
Filing: 1986-02-18
•
Granted: 1988-05-17
•
Expires: 2006-02-18
Abstract
Abstract A color separation filter is formed through use of dyestuffs provided with monomolecular film forming properties in which molecules can be adsorbed by air-water interfaces and with patterning properties capable of forming patterns through exposure by ionizing radiations. A method of manufacturing a color separation filter comprises a step of forming monomolecular films of dyestuffs provided with monomolecular film forming properties and patterning properties, a step of piling a plurality of monomolecular films to form cumulative films and a step of patterning the cumulative films by radiating ionizing radiations to the cumulative films.
Inventors
- 👤 Hideo Saeki
- 👤 Shigeyuki Uematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:33
CPC Classifications
B; B82; B82Y; B82Y30/00; H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/898
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
54 words
A color separation filter for color image pickup having a plurality of prescribed color separation filter parts for transmitting prescribed color light components, each of said prescribed color separation filter parts comprising a pattern of monomolecular film layers of dyestuff coupled with at least one hydrocarbon chain having functional groups crosslinked by ioinizing radiation.
Claim 2
Dependent Claim
54 words
A color separation filter for color image pickup having a plurality of prescribed color separation filter parts for transmitting prescribed color light components, each of said prescribed color separation filter parts comprising a pattern of monomolecular film layers of dyestuff coupled with at least one hydrocarbon chain having functional groups crosslinked by ioinizing radiation.
Claim 3
Dependent Claim
85 words
A color separation filter in accordance with claim 1, wherein said dyestuffs are selected from the group consisting of hydrophilic and lipophilic dyestuff molecules having specific spectral characteristics, and further wherein said hydrophilic dyestuff molecules are coupled with at least one lipophilic hydrocarbon chain and said lipophilic dyestuff molecules are coupled with at least one hydrophilic hydrocarbon chain, said hydrocarbon chains including functional groups selected from the group consisting of double bonds, triple bonds and epoxy groups which are crosslinked and photosensitized by ionizing radiation.
Claim 4
Dependent Claim
35 words
A color separation filter in accordance with claim 2, wherein said hydrocarbon chains include 5 to 30 carbon atoms and are coupled with said dyestuff molecules by a linkage selected from esterification and amination linkages.
Claim 5
Dependent Claim
27 words
A color separation filter in accordance with claim 1, wherein the ionizing radiation is selected from X-rays, electron beams, molecular beams, ultraviolet rays and far ultraviolet rays.
Claim 6
Dependent Claim
35 words
A color separation filter in accordance with claim 1, wherein said color separation filter is applied to a device selected from the group consisting of an image pickup tube and a solid-state image pickup element.
Claim 7
Dependent Claim
92 words
A color separation filter for color image pickup having a plurality of prescribed color separation filter parts for transmitting prescribed color light components, each of said prescribed color separation filter parts being formed by coupling a dyestuff with at least one hydrocarbon chain containing at least one fucntional group photosensitive to ionizing radiation to produce molecules adsorbable by air-water interfaces, forming a plurality of layers of a monomolecular film of said molecules on a substrate and radiating portions of the plurality of layers with ionizing radiation to pattern the plurality of layers.
Claim 8
Dependent Claim
92 words
A color separation filter for color image pickup having a plurality of prescribed color separation filter parts for transmitting prescribed color light components, each of said prescribed color separation filter parts being formed by coupling a dyestuff with at least one hydrocarbon chain containing at least one fucntional group photosensitive to ionizing radiation to produce molecules adsorbable by air-water interfaces, forming a plurality of layers of a monomolecular film of said molecules on a substrate and radiating portions of the plurality of layers with ionizing radiation to pattern the plurality of layers.
References Cited (Backward Citations)
US3104973A
Cited
US3788849A
Cited
JPS5217375A
Cited
US4267961A
Cited
US4416961A
Cited
US4580159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |