US3621181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser pattern generator
Assignee: American Optical Corp
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Filing: 1969-08-15
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Granted: 1971-11-16
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Expires: 1989-08-15
Abstract
Abstract A system and construction for spot welding either in an industrial environment or for repairing retina detachments in the medical field is disclosed as comprising a fagot-laser system with each individual rod including an output end face whose normal is not colinear to the main axis of the rod. Various patterns can be generated with the arrangement by imaging the near field of the output at the laser rod ends onto the work piece or target at the desired magnification and rearranging or rotating the individual rods. An alternative arrangement is to image the far field onto the work at the desired magnification and to rotate the individual rod elements to achieve pattern variation.
Inventors
- 👤 Charles Gilbert Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:48
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/20; B23K26/21; B23K26/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
211 words
A laser construction for providing a highly intense, high dense and heat-emitting beam of output optical energy in a desired multiple spot pattern of adjustable size on a work target, said construction comprising a laser unit including a plurality of individual elongated laser rods, each of said rods having a main axis extending throughout the greater portion of the length of the rod and about which said rod may be rotated, and each rod having one of its end faces arranged to function as an output end face outwardly through which a laser beam is directed during operation of said unit, the output end faces of all of said rods being disposed at the same end of said unit in adjacent spaced side-by-side relation relative to each other, and lens means disposed between said work target and the output ends of said rods so as to image the output beams from each rod upon said work target, the output ends of each of said rods being so positioned and angularly disposed relative to the main axis of said rod as to laterally shift the output beam therefrom during rotation of said rods and thereby cause an inward or outward adjustment as desired of spots of said spot pattern on said target.
Claim 2
Dependent Claim
211 words
A laser construction for providing a highly intense, high dense and heat-emitting beam of output optical energy in a desired multiple spot pattern of adjustable size on a work target, said construction comprising a laser unit including a plurality of individual elongated laser rods, each of said rods having a main axis extending throughout the greater portion of the length of the rod and about which said rod may be rotated, and each rod having one of its end faces arranged to function as an output end face outwardly through which a laser beam is directed during operation of said unit, the output end faces of all of said rods being disposed at the same end of said unit in adjacent spaced side-by-side relation relative to each other, and lens means disposed between said work target and the output ends of said rods so as to image the output beams from each rod upon said work target, the output ends of each of said rods being so positioned and angularly disposed relative to the main axis of said rod as to laterally shift the output beam therefrom during rotation of said rods and thereby cause an inward or outward adjustment as desired of spots of said spot pattern on said target.
Claim 3
Dependent Claim
24 words
The invention according to claim 1 wherein said light output end faces of said rods are oblique to respective main axes of said rods.
Claim 4
Dependent Claim
32 words
The invention according to claim 1 wherein a short section of the length of each of said rods near its output end face is angularized to the main axis of the rod.
Claim 5
Dependent Claim
21 words
The invention according to claim 3 wherein said output end faces are disposed perpendicularly to respective main axes of the rods.
Claim 6
Dependent Claim
12 words
The invention according to claim 1 wherein said lens means is astigmatic.
Claim 7
Dependent Claim
28 words
The invention according to claim 1 wherein said lens means is disposed at a distance from said work target equal to the focal length of said lens means.
Claim 8
Dependent Claim
64 words
The invention according to claim 1 wherein the far field of the output of said laser unit is in the form of individual spots and is imaged by said lens means onto said work target and means is provided for individually rotating said laser rods about their respective axes to change the position of said spots relative to each other on said work target.
Claim 9
Dependent Claim
63 words
The invention according to claim 1 wherein the far field of the output of said laser unit is in the form of individual spots and is imaged by said lens means onto said work target and at least some of said laser rods are selected to be of individually different lengths to correspondingly alter the size of said spots on said work target.
Claim 10
Dependent Claim
64 words
The invention according to claim 3 wherein the near field of the output of said laser unit is in the form of individual spots and is imaged by said lens means onto said work target and means is provided for individually rotating said laser rods about their respective axes to change the position of said spots relative to each other on said work target.
Claim 11
Dependent Claim
55 words
The invention according to claim 1 wherein the near field of the output of said laser unit is in the form of individual spots and is imaged by said lens means onto said work target and means is provided for adjusting the position of said lens means to vary the size of said individual spots.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |