Levelling laser and optical projection lens
US12352573B2 · kind B2 · utility
0Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | May 23, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0052
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A levelling laser for generating a laser projection line on a surface is disclosed. The levelling laser includes an optical projection lens with a three-dimensional lens surface. The projection lens can be described in a three-dimensional coordinates system having three axes, X, Y and Z, arranged orthogonally to one another. The Z-axis coincides with the optical axis of the projection lens. The lens surface of the projection lens has a shape with a surface inclination angle rising monotonically along the X-axis. A corresponding projection lens is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.