US4367017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam reflection system
Assignee: Hitachi Ltd
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Filing: 1980-09-24
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Granted: 1983-01-04
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Expires: 2000-09-24
Abstract
Abstract A laser beam reflection system for applying a laser beam to an area to be treated. The laser beam reflection system has a hollow head housing, first reflecting mirror means disposed in the rotary head housing and adapted to deflect the laser beam introduced into the rotary head housing away from the axis, second reflecting mirror means disposed in the rotary head housing and adapted to reflect the laser beam coming from the first reflecting mirror means to such a direction as to traverse the axis, and third reflecting mirror means disposed in the head housing movably in the direction traversing the axis and adapted to reflect and focus onto the area the laser beam coming from the second reflecting mirror means. The laser beam reflection system of the invention can be used for welding, surface treatment, heat treatment, cutting of various materials, and a light source of laser communication systems.
Inventors
- 👤 Ryutarou Jimbou
- 👤 Tomio Umino
- 👤 Tomohiko Shida
- 👤 Tomio Iizuka
- 👤 Shoji Isobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:53
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/14; B23K26/1462; B23K26/1464; B23K26/147; B23K26/02; B23K26/035; B23K26/06; B23K26/064; B23K26/0643; B23K26/08; B23K26/082; B23K26/20; B23K26/21; B23K26/24; B23K26/28; G; G02; G02B; G02B19/00; G02B19/0004; G02B19/0019; G02B19/0033; G02B19/0047; G02B27/00; G02B27/64; G02B27/642
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
148 words
A laser beam reflection system for applying a laser beam to an area to be treated, comprising a hollow head housing having an axis of rotation; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing so that said reflected laser beam forms an acute angle with respect to the axis of rotation of said head housing; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect said laser beam which is reflected from said second reflecting mirror means on said area to be treated.
Claim 2
Dependent Claim
148 words
A laser beam reflection system for applying a laser beam to an area to be treated, comprising a hollow head housing having an axis of rotation; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing so that said reflected laser beam forms an acute angle with respect to the axis of rotation of said head housing; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect said laser beam which is reflected from said second reflecting mirror means on said area to be treated.
Claim 3
Dependent Claim
37 words
A rotary laser beam head as claimed in claim 1, wherein said third reflecting mirror means is mounted such that the irradiation angle of said laser beam is adjustable with respect to said area to be treated.
Claim 4
Dependent Claim
148 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing so that said reflected laser beam forms an acute angle with respect to the axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated.
Claim 5
Dependent Claim
148 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing so that said reflected laser beam forms an acute angle with respect to the axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated.
Claim 6
Dependent Claim
27 words
A rotary laser beam head as claimed in claim 1 or 3, wherein said laser beam is introduced into said head housing in parallel with said axis.
Claim 7
Dependent Claim
192 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing from said axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis; said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated, said second reflecting mirror means including a reflecting mirror adapted to reflect substantially at a right angle the laser beam reflected by said first reflecting mirror means and another reflecting mirror adapted to reflect at an acute angle the laser beam reflected by said reflecting mirror, and said third reflecting mirror means being a spherical mirror.
Claim 8
Dependent Claim
192 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing from said axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis; said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated, said second reflecting mirror means including a reflecting mirror adapted to reflect substantially at a right angle the laser beam reflected by said first reflecting mirror means and another reflecting mirror adapted to reflect at an acute angle the laser beam reflected by said reflecting mirror, and said third reflecting mirror means being a spherical mirror.
Claim 9
Dependent Claim
30 words
A rotary laser beam head as claimed in claim 1, 3 or 5, wherein said laser beam is introduced into said head housing at a right angle to said axis.
Claim 10
Dependent Claim
60 words
A rotary laser beam head as claimed in claim 1, 3 or 5, wherein said first reflecting mirror means include a reflecting mirror adapted to reflect substantially at a right angle the laser beam introduced into said head housing, and another reflecting mirror adapted to reflect substantially at a right angle the laser beam coming from the first-mentioned reflecting mirror.
Claim 11
Dependent Claim
25 words
A rotary laser beam head as claimed in any one of claims 1, 3 or 5, wherein said rotary head housing has a cylindrical form.
Claim 12
Dependent Claim
191 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing from said axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated, said first and second reflecting mirror means being spaced from each other in both of directions parallel to and perpendicular to said axis, while said second and third reflecting mirror means are positioned at the same level with respect to said axis but are spaced from each other in the direction perpendicular to the same.
Claim 13
Dependent Claim
191 words
A rotary laser beam head for applying a laser beam to an area to be treated, comprising: a hollow rotatable head housing mounted for rotation around an axis; first reflecting mirror means disposed in said head housing and adapted to reflect said laser beam introduced into said head housing from said axis of rotation; second reflecting mirror means disposed in said head housing and adapted to change the direction of said laser beam reflected by said first reflecting mirror means to such a direction as to traverse said axis; and third reflecting mirror means disposed in said head housing and movable in the direction traversing said axis, said third reflecting mirror means being adapted to reflect and focus said laser beam which is reflected from said second reflecting mirror means on said area to be treated, said first and second reflecting mirror means being spaced from each other in both of directions parallel to and perpendicular to said axis, while said second and third reflecting mirror means are positioned at the same level with respect to said axis but are spaced from each other in the direction perpendicular to the same.
Claim 14
Dependent Claim
46 words
A rotary laser beam head as claimed in claim 9, wherein said first reflecting mirror means reflects said laser beam introduced into said head housing so that said reflected laser beam forms an acute angle with respect to the axis of rotation of said head housing.
Claim 15
Dependent Claim
36 words
A rotary laser beam head as claimed in claim 1, 3, 5 or 9, wherein said third reflecting mirror means is disposed for directly focusing and reflecting the laser beam on said area to be treated.
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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |