US4257041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro optical display device
Assignee: Izon Corp
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Filing: 1978-06-19
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Granted: 1981-03-17
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Expires: 1998-06-19
Abstract
Abstract An electronically addressed electro optical display device of the type in which an electrical signal containing intelligence is translated into alphanumeric, graphic and pictorial images on an electro optical display includes an array of short focal length lenses, an array of electronically addressed electro optical display elements, each of which is aligned with and in the optical path of a respective one of the lenses and a screen onto which the images on the display elements are projected by the lenses. Where the electro optical display elements are of the passive type in which images are formed by selectively modulating the transmission, reflection or scattering of light, an array of light sources is employed located so as to illuminate the array of electro optical display elements.
Inventors
- 👤 Carmine Masucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:27
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133526; G09; G09G; G09G3/00; G09G3/001
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
An electro optical display device of the type in which an electrical signal is translated into alphanumeric, graphic and pictorial images comprising an array of individual projection lenses, each of said lenses being responsive to light of a different segment of said image, an array of electronically addressed electro optical display elements each of which is aligned with and on the optical axis of a respective one of the lenses, each of said elements being matrix addressable for formation of said segment of an image thereon, and a screen onto which said segments of the images on the display elements are assembled by projection by the lenses, said lenses being spaced from one another such that said assembled projection is without visible division.
Claim 2
Dependent Claim
123 words
An electro optical display device of the type in which an electrical signal is translated into alphanumeric, graphic and pictorial images comprising an array of individual projection lenses, each of said lenses being responsive to light of a different segment of said image, an array of electronically addressed electro optical display elements each of which is aligned with and on the optical axis of a respective one of the lenses, each of said elements being matrix addressable for formation of said segment of an image thereon, and a screen onto which said segments of the images on the display elements are assembled by projection by the lenses, said lenses being spaced from one another such that said assembled projection is without visible division.
Claim 3
Dependent Claim
21 words
A display device as set forth in claim 1, including a light source located for illuminating the array of display elements.
Claim 4
Dependent Claim
29 words
A display device as set forth in claim 2, wherein the light source includes an array of light conducting fiber rods for individually illuminating each of the display elements.
Claim 5
Dependent Claim
46 words
A display device as set forth in claim 1 wherein the lens array is in a first plane, the display elements are in a second plane, and the screen is in a third plane; the first, second, and third planes being substantially parallel with one another.
Claim 6
Dependent Claim
21 words
A display device as set forth in claim 1 wherein the electro optical display elements are dot matrix active display elements.
Claim 7
Dependent Claim
19 words
A display device as set forth in claim 1 wherein the display elements are dot matrix passive display elements.
Claim 8
Dependent Claim
39 words
A display device as set forth in claim 4 including electronic addressing means in electrical engagement with the display elements for supplying the display elements with an electrical signal to be translated into an image on the display elements.
Claim 9
Dependent Claim
27 words
A display device as set forth in claim 1 wherein the lenses magnify the images on the display elements when the images are projected on the screen.
Claim 10
Dependent Claim
46 words
A display device as set forth in claim 7 wherein at least a portion of the electronic addressing means are located on the second plane in interspersed relationship with the array of electro optical display elements and out of the optical paths of the projection lenses.
Claim 11
Dependent Claim
34 words
A display device as set forth in claim 6 wherein the display elements are of the type which create an image by modulating the transmission or scattering of light passing through the display element.
Claim 12
Dependent Claim
32 words
A display device as set forth in claim 6 wherein the display elements are of the type which create an image by modulating their reflectance of light impinging on the display element.
Claim 13
Dependent Claim
36 words
A display device as set forth in claim 8 in which the images on the display elements are projected onto the screen in overlapping relationship so as to provide a unitary continuous image on the screen.
Claim 14
Dependent Claim
50 words
A display device as set forth in claim 8 and further including a mask in the optical path of the projection lenses so that the images on the display elements are projected onto the screen in edge butting relationship so as to provide a unitary continuous image on the screen.
References Cited (Backward Citations)
US3349677A
Cited
US3644922A
Cited
US3750136A
Cited
US3744878A
Cited
US3942159A
Cited
US3963326A
Cited
US3909823A
Cited
US4103297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |