Patent US4553017A successfully refreshed from Google Patents.
US4553017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy beam focusing apparatus and method
Assignee: UCB SA
•
Filing: 1983-04-29
•
Granted: 1985-11-12
•
Expires: 2003-04-29
Abstract
Abstract Apparatus and method for increasing the power density of an energy beam (e.g. a laser beam) by focusing an incident beam to an anisometric configuration and thereafter focusing the anisometric beam to a modified, preferably isometric, configuration. A serrulate reflective surface facilitates the splitting of an incident beam into a plurality of high energy reflected beams, and the technique is of utility in perforating webs, such as polyolefin films.
Inventors
- 👤 Robert L. Addleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:02
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/36; B23K26/38; B23K26/382; B23K26/02; B23K26/06; B23K26/0604; B23K26/062; B23K26/0622; B23K26/0624; B23K26/067; B23K26/08; B23K26/082; B23K26/0821; B23K26/083; B23K26/0838; B23K26/0846; G; G02; G02B; G02B27/00; G02B27/09; G02B27/0938; G02B27/0977; B23K2103/00; B23K2103/30; B23K2103/40; B23K2103/42; B23K2103/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
39 words
An apparatus for increasing the power density of an energy beam said apparatus comprising first means for focusing the beam to an anisometric configuration and second means for focusing the anisometric beam to a modified, preferably substantially isometric, configuration.
Claim 2
Independent Claim
39 words
An apparatus for increasing the power density of an energy beam said apparatus comprising first means for focusing the beam to an anisometric configuration and second means for focusing the anisometric beam to a modified, preferably substantially isometric, configuration.
Claim 3
Dependent Claim
58 words
An apparatus according to claim 1 wherein the first focusing means comprises a first concave reflective element uniaxially curved about an axis of curvature and the second focusing means comprises a second concave reflective element uniaxially curved about an axis of curvature, the axes of curvature of the first and second concave elements being relatively, preferably orthogonally, inclined.
Claim 4
Dependent Claim
34 words
An apparatus according to claim 1 wherein the first focusing means comprises a serrulate reflective surface having a plurality of concave, uniaxially curved elements aligned with their axes of curvature in substantially parallel relationship.
Claim 5
Dependent Claim
23 words
An apparatus according to claim 3 including beam scanning means to traverse the beam over each reflective element of the first focusing means.
Claim 6
Dependent Claim
29 words
An apparatus according to claim 1 for perforating a web comprising means for supplying a web to a location at or adjacent the focal point of the modified beam.
Claim 7
Dependent Claim
30 words
An apparatus according to claim 5 comprising a beam reflective element reflectively located adjacent, and preferably in intimate contact with, the surface of the web remote from the energy beam.
Claim 8
Independent Claim
32 words
A method of increasing the power density of an energy beam comprising focusing the beam to an anisometric configuration and thereafter focusing the anisometric beam to a modified, preferably substantially isometric, configuration.
Claim 9
Independent Claim
32 words
A method of increasing the power density of an energy beam comprising focusing the beam to an anisometric configuration and thereafter focusing the anisometric beam to a modified, preferably substantially isometric, configuration.
Claim 10
Dependent Claim
30 words
A method according to claim 7 comprising focusing the beam to form a plurality of beams each of anisometric configuration and thereafter focusing each anisometric beam to a modified configuration.
Claim 11
Dependent Claim
28 words
A method according to claim 7 comprising supplying a web to a location at or adjacent the focal point of the modified beam thereby to perforate the web.
Claim 12
Dependent Claim
12 words
A method according claim 7 wherein the beam is a laser beam.
References Cited (Backward Citations)
US3931491A
Cited
DE2908195A1
Cited
US4315130A
Cited
GB2022987A
Cited
US4250372A
Cited
US4378480A
Cited
US4297559A
Cited
EP0021165A1
Cited
EP0047604A1
Cited
EP0080597A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |