Patent US3602640A successfully refreshed from Google Patents.
US3602640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser fiber optic scanning device
Assignee: Alcatel Lucent SAS
•
Filing: 1969-04-17
•
Granted: 1971-08-31
•
Expires: 1989-04-17
Abstract
Abstract A line-sequential television camera device is disclosed which has a detector such as a photomultiplier or similar device linked to an optical reception device by a cluster of optical fibers. The input faces of the optical fibers lie along part of a line limited by the intersection of the focal plane and the scanning plane of a laser beam. The output surfaces of the optical fibers are assembled at the front of the detector.
Inventors
- 👤 Henry Maillet
- 👤 Michele Leblanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/257
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A line-sequential television camera device comprising: a. means for scanning the view to be televised point-by-point along a line by a laser beam, b. an optical device concentrating the light diffused by the points of the line illuminated by the laser beam along a focal line parallel to the said line, c. a bundle of optical fibers whose inlet faces are disposed along the said focal line and whose outlet faces are assembled to form a portion of an arc of a circle, d. a photosensitive cell disposed opposite an outlet face of a light duct actuated with a rotational movement about an axis extending through the center of its outlet face, so that its inlet face successively sweeps all the outlet faces of the said optical fibers, and e. a coupling device for synchronizing the scanning movement of the said laser beam and the rotational movement of the said optical duct.
Claim 2
Dependent Claim
152 words
A line-sequential television camera device comprising: a. means for scanning the view to be televised point-by-point along a line by a laser beam, b. an optical device concentrating the light diffused by the points of the line illuminated by the laser beam along a focal line parallel to the said line, c. a bundle of optical fibers whose inlet faces are disposed along the said focal line and whose outlet faces are assembled to form a portion of an arc of a circle, d. a photosensitive cell disposed opposite an outlet face of a light duct actuated with a rotational movement about an axis extending through the center of its outlet face, so that its inlet face successively sweeps all the outlet faces of the said optical fibers, and e. a coupling device for synchronizing the scanning movement of the said laser beam and the rotational movement of the said optical duct.
Claim 3
Dependent Claim
45 words
The device according to claim 1, further comprising mirrors disposed to bring the outermost light beams towards the center of the segment of said focal line thereby reducing the length of the said line portion along which the inlet faces of the fibers are disposed.
Claim 4
Dependent Claim
24 words
The device according to claim 1, wherein the said fibers are so oriented that the light beams are substantially normal to the inlet faces.
Claim 5
Dependent Claim
35 words
The device according to claim 2, wherein the said mirrors are so disposed as to be perpendicular to the scanning plane of the said laser beam and parallel to the optical axis of the device.
Claim 6
Dependent Claim
69 words
The device according to claim 2, wherein the said mirrors are parallel to the optical axis of the device and inclined in relation to the normal to the said scanning plane, and further comprising a second layer of optical fibers being disposed and oriented in such manner that the rays reflected by the said mirrors are incident upon the inlet faces of the fibers at a substantially normal angle.
Claim 7
Dependent Claim
57 words
The device according to claim 1, wherein the transverse dimension of the inlet face of the said flexible light duct is at least equal to (2he/C)Vx, he being the maximum altitude of the objects to be observed, C the velocity of light and Vx the speed of movement of the said inlet face of the light duct.
Claim 8
Dependent Claim
37 words
The device according to claim 1, wherein the scanning by the laser beam is effected at such a speed that the time taken by the beam to pass over a given point is distinctly greater than 2he/C.
Claim 9
Dependent Claim
24 words
The device according to claim 1, further comprising means for synchronizing the rotation of said optical duct to the scanning of said laser beam.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |