US3902142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam control apparatus
Assignee: European Atomic Energy Community Euratom
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Filing: 1974-01-02
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Granted: 1975-08-26
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Expires: 1994-01-02
Abstract
Abstract A control device for a laser beam, comprising a wheel which is driven at constant speed and has smooth sheet metal blades. The blades have a surface orientation perpendicular to the circumferential orientation and are supported for pivoting about an axis which is disposed in the surface of the wheel and extends through the wheel axis. A casing surrounds the bladed wheel and has an inlet and an outlet for a laser beam at positions at which the line connecting the two apertures perpendicularly intersects the pivoting axis in the zone of the blades.
Inventors
- 👤 Den Berg Max Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:38
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/02; G02B26/04; G02B5/00; G02B5/005; H; H01; H01S; H01S3/00; H01S3/005; H01S3/0057
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
Apparatus for providing continuous intensity modulation of a laser beam, comprising a bladed wheel, means for driving said wheel at a constant rotational speed, the blades of said bladed wheel being fixed to said wheel and being constructed as smooth sheet metal strips with a surface orientation perpendicular to the circumferential orientation, and means supporting said bladed wheel for pivotal movement about an axis disposed in the wheel surface and extending through the wheel axis in a casing which surrounds the bladed wheel, the casing having laser beam inlet and laser beam outlet apertures at positions at which the line connecting the two apertures perpendicularly intersects the pivoting axis in the blade zone.
Claim 2
Dependent Claim
113 words
Apparatus for providing continuous intensity modulation of a laser beam, comprising a bladed wheel, means for driving said wheel at a constant rotational speed, the blades of said bladed wheel being fixed to said wheel and being constructed as smooth sheet metal strips with a surface orientation perpendicular to the circumferential orientation, and means supporting said bladed wheel for pivotal movement about an axis disposed in the wheel surface and extending through the wheel axis in a casing which surrounds the bladed wheel, the casing having laser beam inlet and laser beam outlet apertures at positions at which the line connecting the two apertures perpendicularly intersects the pivoting axis in the blade zone.
Claim 3
Dependent Claim
18 words
Apparatus according to claim 1, in which the blade width corresponds approximately to the distance between two blades.
Claim 4
Dependent Claim
52 words
Apparatus according to claim 1, in which a bearing journal is rotatably mounted in the casing wall in alignment with the pivoting axis, said journal being provided on the interior with retaining means for a motor and for the wheel shaft and being provided on the exterior with a graduated adjusting knob.
Claim 5
Dependent Claim
28 words
Apparatus according to claim 1 for the rhythmic pulsing of the energy of a laser beam, wherein only one half of the circumference of the wheel is bladed.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 4, in which the wheel is alternately bladed over 2k-th of the circumference and is unbladed thereto, k being a positive integer.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |