Patent US4545657A successfully refreshed from Google Patents.
US4545657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam scanning mirror finely adjusted via joystick
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1982-07-08
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Granted: 1985-10-08
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Expires: 2002-07-08
Abstract
Abstract A laser beam scanning mechanism includes a joystick controlled reflecting member designed so as to eliminate play by directly contacting a joystick end with a concave surface of a mirror holder, where the radius of curvature of the concave surface is slightly varied from the effective length of the joystick.
Inventors
- 👤 Katsuyoshi Sunago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:28
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; G; G02; G02B; G02B26/00; G02B26/08; G02B26/0816; A61B34/00; A61B34/70; A61B34/74; A61B2034/742
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A laser beam scanning adjustment mechanism in which the movement of a joystick is transformed into the inclination of a mirror, comprising; a movable mirror holder for holding a mirror, said mirror holder having a concave surface with a first point substantially at the center of said concave surface, pivot bearing means positioned between said mirror holder and said mirror at a second point aligned with said first point of said center of said concave surface, said pivot bearing means serving as a fulcrum for movement of said mirror holder; and a joystick having one end in contact with said concave surface of said mirror holder for varying the inclination of said mirror as a result of joystick movement in contact with said concave surface which in turn moves said mirror holder.
Claim 2
Dependent Claim
132 words
A laser beam scanning adjustment mechanism in which the movement of a joystick is transformed into the inclination of a mirror, comprising; a movable mirror holder for holding a mirror, said mirror holder having a concave surface with a first point substantially at the center of said concave surface, pivot bearing means positioned between said mirror holder and said mirror at a second point aligned with said first point of said center of said concave surface, said pivot bearing means serving as a fulcrum for movement of said mirror holder; and a joystick having one end in contact with said concave surface of said mirror holder for varying the inclination of said mirror as a result of joystick movement in contact with said concave surface which in turn moves said mirror holder.
Claim 3
Dependent Claim
21 words
A scanning mechanism as claimed in claim 1, further including an adaptor body for mounting said joystick and said mirror holder.
Claim 4
Dependent Claim
16 words
A scanning mechanism as claimed in claim 1, said joystick being pivotable about a stick fulcrum.
Claim 5
Dependent Claim
32 words
A scanning mechanism as claimed in claim 3, in which a distance between the stick fulcrum and an end of said joystick differs from a radius of curvature of said concave surface.
Claim 6
Dependent Claim
174 words
A laser beam scanning adjustment mechanism in which the movement of a joystick is transformed into the inclination of a mirror, comprising; a movable mirror holder for holding a mirror and including a concave surface with a first point substantially at the center of said concave surface, pivot bearing means positioned between said mirror holder and said mirror to a second point aligned with said first point of said center of said concave surface, said pivot bearing means serving as a fulcrum for movement of said mirror holder; an adaptor body for mounting said joystick and said mirror holder including means for supporting said mirror holder, said supporting means including pivot bearing means engaged with a surface spaced from said concave surface, elastic means connecting said mirror holder and said support means; and a joystick having one end in contact with said concave surface of said mirror holder for varying the inclination of said mirror as a result of joystick movement in contact with said concave surface which in turn moves said mirror holder.
Claim 7
Dependent Claim
174 words
A laser beam scanning adjustment mechanism in which the movement of a joystick is transformed into the inclination of a mirror, comprising; a movable mirror holder for holding a mirror and including a concave surface with a first point substantially at the center of said concave surface, pivot bearing means positioned between said mirror holder and said mirror to a second point aligned with said first point of said center of said concave surface, said pivot bearing means serving as a fulcrum for movement of said mirror holder; an adaptor body for mounting said joystick and said mirror holder including means for supporting said mirror holder, said supporting means including pivot bearing means engaged with a surface spaced from said concave surface, elastic means connecting said mirror holder and said support means; and a joystick having one end in contact with said concave surface of said mirror holder for varying the inclination of said mirror as a result of joystick movement in contact with said concave surface which in turn moves said mirror holder.
Claim 8
Dependent Claim
23 words
A scanning mechanism as claimed in claim 5, said elastic means comprising spring means for urging said mirror holder toward said supporting means.
Claim 9
Dependent Claim
22 words
A scanning mechanism as claimed in claim 5, said elastic means comprising an elastomer between said mirror holder and said supporting means.
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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |