US3609233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube facsimile apparatus
Assignee: American Optical Corp
•
Filing: 1969-09-29
•
Granted: 1971-09-28
•
Expires: 1989-09-29
Abstract
Abstract A cathode-ray tube is provided with a light-transmitting face comprised of a rectangular strip of optical fibers having a long and narrow light-emitting end across which a manuscript is moved for photoelectrically copying subject matter thereon. A flying spot of light produced within the tube is transmitted through the strip of fibers onto the manuscript and portions of this light reflected from the manuscript are received by a prism-lens system adjacent the emitting end of the strip of fibers. This system then directs the reflected light onto a photoelectric transducer for conversion into an electrical signal which is useful as an electrical reading of the manuscript or convertible into other forms of facsimile information.
Inventors
- 👤 Kazuyoshi Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:00
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; H04N1/02835; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/892; H04N1/0281
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
204 words
Electron tube facsimile apparatus comprising a cathode-ray tube having a electroluminous face portion across which a flying spot of light is produced by operation of the tube and a strip of juxtaposed light-conductinG fibers extending through the face portion of said tube for receiving and conveying said spot of light outwardly of said tube, said strip having a long and narrow light-emitting outer end across which an article bearing image information to be reproduced is moved whereby light emitted from said outer end of said strip of fibers becomes incident upon and partially reflected by said article in amounts characterized by said image information, and an elongated light-focusing lens and photoelectric transducing means externally of said tube for respectively focusing said reflected light into said transducing means and converting said light into an electrical signal having utility as an electrical reading of said image wherein the improvement comprises: an elongated light-receiving prism extending along said strip of fibers against one side of said light-emitting end thereof for receiving at least a major portion of light reflected from said article and for directing said reflected light obliquely away from said strip of fibers toward said lens for reception thereby and focusing upon said transducing means.
Claim 2
Dependent Claim
204 words
Electron tube facsimile apparatus comprising a cathode-ray tube having a electroluminous face portion across which a flying spot of light is produced by operation of the tube and a strip of juxtaposed light-conductinG fibers extending through the face portion of said tube for receiving and conveying said spot of light outwardly of said tube, said strip having a long and narrow light-emitting outer end across which an article bearing image information to be reproduced is moved whereby light emitted from said outer end of said strip of fibers becomes incident upon and partially reflected by said article in amounts characterized by said image information, and an elongated light-focusing lens and photoelectric transducing means externally of said tube for respectively focusing said reflected light into said transducing means and converting said light into an electrical signal having utility as an electrical reading of said image wherein the improvement comprises: an elongated light-receiving prism extending along said strip of fibers against one side of said light-emitting end thereof for receiving at least a major portion of light reflected from said article and for directing said reflected light obliquely away from said strip of fibers toward said lens for reception thereby and focusing upon said transducing means.
Claim 3
Dependent Claim
40 words
Electron tube facsimile apparatus according to claim 1 further including a transparent spacer means between said light emitting end of said strip of fibers and said article wherewith reflection of said light from said article into said prism is facilitated.
Claim 4
Dependent Claim
25 words
Electron tube facsimile apparatus according to claim 1 further including a pair of mirrors, one disposed adjacent each of opposite ends of said light-focusing lens.
Claim 5
Dependent Claim
51 words
Electron tube facsimile apparatus according to claim 1 wherein said light-transducing means comprises a plurality of photoelectric devices and a corresponding number of light band-pass filters arranged to filter said light reflected from said article and pass a different relatively narrow band of wavelengths thereof onto each of said photoelectric devices.
Claim 6
Dependent Claim
53 words
Electron tube facsimile apparatus according to claim 1 wherein said strip of light-conducting fibers is stepped down intermediately of said prism and cathode-ray tube by a transverse cut through certain fibers thereof and the cut ends of said certain fibers are coated with an opaque material to prevent the transmission of light therethrough.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |