US4943972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser tube
Assignee: LASO LASER-FERTIGUNG GmbH
•
Filing: 1988-11-02
•
Granted: 1990-07-24
•
Expires: 2008-11-02
Abstract
Abstract An especially inexpensive laser tube is formed having a mirror mount composed of a material which is not matched to the coefficient of thermal expansion of the mirror material and in that the material is either soft soldered or glued on with a glue that develops little gas.
Inventors
- 👤 Hans Krueger
- 👤 Wolfgang Welsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A laser tube, comprising: a tubular housing; at least one metallic mirror mount composed of an material having a first coefficient of thermal expansion and positioned at an end of said tubular housing; an integrated mirror on said at least one mirror mount, said integrated mirror having a second coefficient of thermal expansion different than said first coefficient of thermal expansion; and a soft solder securing said mirror on said at least one mirror mount.
Claim 2
Dependent Claim
75 words
A laser tube, comprising: a tubular housing; at least one metallic mirror mount composed of an material having a first coefficient of thermal expansion and positioned at an end of said tubular housing; an integrated mirror on said at least one mirror mount, said integrated mirror having a second coefficient of thermal expansion different than said first coefficient of thermal expansion; and a soft solder securing said mirror on said at least one mirror mount.
Claim 3
Dependent Claim
75 words
A laser tube, comprising: a tubular housing; at least one metallic mirror mount composed of an material having a first coefficient of thermal expansion and positioned at an end of said tubular housing; an integrated mirror on said at least one mirror mount, said integrated mirror having a second coefficient of thermal expansion different than said first coefficient of thermal expansion; and a glue which develops little gas securing said mirror on said mirror mount.
Claim 4
Dependent Claim
75 words
A laser tube, comprising: a tubular housing; at least one metallic mirror mount composed of an material having a first coefficient of thermal expansion and positioned at an end of said tubular housing; an integrated mirror on said at least one mirror mount, said integrated mirror having a second coefficient of thermal expansion different than said first coefficient of thermal expansion; and a glue which develops little gas securing said mirror on said mirror mount.
Claim 5
Dependent Claim
18 words
A laser tube as claimed in claim 2, wherein said glue is a high-grade silver-filled epoxy resin glue.
Claim 6
Dependent Claim
56 words
A laser tube as claimed in claim 1, further comprising: a face plate of metal having a coefficient of thermal expansion substantially matching a coefficient of thermal expansion of said tubular housing, said face plate terminating said tubular housing; and a fully reflecting mirror being affixed by solder to said plate inside of said laser tube.
Claim 7
Dependent Claim
57 words
A laser tube as claimed in claim 2, further comprising: a face plate of metal having a coefficient of thermal expansion substantially matching a coefficient of thermal expansion of said tubular housing, said face plate terminating said tubular housing; and a fully reflecting mirror being affixed by glue to said face plate inside of said laser tube.
Claim 8
Dependent Claim
16 words
A laser tube as claimed in claim 1, w herein said mirror has a quadrilateral surface.
Claim 9
Dependent Claim
15 words
A laser tube as claimed in claim 2, wherein said mirror has a quadrilateral surface.
Claim 10
Independent Claim
57 words
A method for adjusting mirrors of a laser tube having two mirrors, comprising the steps of: directing a test beam into the laser tube after assembly, the test beam having a wavelength that is only partially reflected by the mirrors; adjusting the two mirrors according to the reflections of the test beam from surfaces of the mirror.
Claim 11
Independent Claim
57 words
A method for adjusting mirrors of a laser tube having two mirrors, comprising the steps of: directing a test beam into the laser tube after assembly, the test beam having a wavelength that is only partially reflected by the mirrors; adjusting the two mirrors according to the reflections of the test beam from surfaces of the mirror.
Claim 12
Dependent Claim
35 words
A method as claimed in claim 8, wherein the mirrors of a red HeNe laser are adjusted, wherein said mirrors are interference mirrors; and said test beam is a beam from a green HeNe laser.
References Cited (Backward Citations)
US3555450A
Cited
US3777281A
Cited
US3790900A
Cited
US3851275A
Cited
US3857161A
Cited
US4081762A
Cited
US4233568A
Cited
US4216438A
Cited
US4250467A
Cited
US4153317A
Cited
US4283688A
Cited
US4649546A
Cited
US4564948A
Cited
US4575853A
Cited
US4677640A
Cited
US4750186A
Cited
US4847849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |