US3820903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing a light plane
Assignee: Siemens AG
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Filing: 1972-08-31
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Granted: 1974-06-28
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Expires: 1992-08-31
Abstract
Abstract A device for producing a plane of laser light from a laser beam for use in controlling machines such as earth moving machines, rail adjusting machines, and rail directing machines characterized by a glass cone having a mirrored outer circumference to provide a conical reflecting surface arranged in a laser beam to reflect the beam as a plane of laser light. By adjusting the inclination of the axis of the cone with respect to the axis of the laser beam, the inclination of the plane of laser light with respect to the beam can be changed. By arranging the glass cone with its axis on the axis of the beam, a plane extending 360* from the device can be produced and if the axis of the cone is coaxial with the axis of the beam, the intensity of light extending in all directions is substantially equal. By offsetting the axis of the cone with respect to the axis of the laser beam, the laser beam can be converted to a plane of light extending from the device as an angular segment of less than 360*.
Inventors
- 👤 H Kindl
- 👤 V Met
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/002; G01C15/004; E; E01; E01B; E01B35/00; E01B2203/00; E01B2203/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A device for converting a laser beam into a plane of laser light for use as a reference plane in controlling equipment such as earth moving machines, comprising a laser source providing a collimated laser beam, a right circular conical reflecting surface having an external reflecting surface, said conical reflecting surface being arranged in the path of the laser beam so that said right circular conical reflecting surface converts said collimated laser beam into a plane of light.
Claim 2
Independent Claim
78 words
A device for converting a laser beam into a plane of laser light for use as a reference plane in controlling equipment such as earth moving machines, comprising a laser source providing a collimated laser beam, a right circular conical reflecting surface having an external reflecting surface, said conical reflecting surface being arranged in the path of the laser beam so that said right circular conical reflecting surface converts said collimated laser beam into a plane of light.
Claim 3
Dependent Claim
36 words
A device according to claim 1, wherein said conical reflecting surface is arranged on the axis of said collimated laser beam to provide a light plane extending from the device through an angular range of 360*.
Claim 4
Dependent Claim
64 words
A device according to claim 2, wherein said conical reflecting surface is adjustably mounted with respect to said axis of said collimated laser beam to enable adjustment of the inclination between the axis of said conical reflecting surface and said axis of said collimated laser beam to vary the inclination of the light plane with respect to said axis of said collimated laser beam.
Claim 5
Dependent Claim
22 words
A device according to claim 2, wherein said conical reflecting surface is provided by a glass cone with a mirrored outer circumference.
Claim 6
Dependent Claim
66 words
A device according to claim 4, wherein said glass cone forming said conical reflecting surface is adjustably mounted with respect to said collimated laser beam to enable adjustment in the inclination between the axis of said glass cone and said axis of said collimated laser beam to adjust the inclination of the plane of laser light with respect to said axis of said collimated laser beam.
Claim 7
Dependent Claim
22 words
A device according to claim 1, wherein said conical reflecting surface is provided by a glass cone with a mirrored outer circumference.
Claim 8
Dependent Claim
61 words
A device according to claim 6, wherein said glass cone is adjustably mounted with respect to the axis of said collimated laser beam to enable adjustment in the inclination between the axis of said glass cone and said axis of said collimated laser beam to adjust the inclination of the plane with respect to said axis of said collimated laser beam.
Claim 9
Dependent Claim
60 words
A device according to claim 1, wherein said conical reflecting surface is adjustably mounted with respect to said collimated laser beam to enable adjustment in the inclination between the axis of said conical reflecting surface and the axis of the laser beam to vary the inclination of the light plane with respect to said axis of said collimated laser beam.
Claim 10
Dependent Claim
53 words
A device according to claim 1, wherein said conical reflecting surface is formed by a glass cone with a mirrored outer circUmference, said glass cone being mounted with its axis coaxial with the axis of said collimated laser beam to provide a light plane extending 360* from the device with substantially equal intensity.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |