Optical receiver lens and optical distance measuring device
US8611022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Feb 5, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4811
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical receiver lens has a three-dimensional lens surface, for receiving the laser radiation of a laser distance measuring device, said laser radiation being reflected at an object, wherein the receiver lens can be described in a three-dimensional coordinate system having three axes x, y, z arranged at right angles with respect to one another and wherein the z-axis coincides with the optical axis of the receiver lens. At least one non-spherical area section of the lens surface can be described by addition of a first area, the flexure of which along the z-axis is a first function (f1) of x and y, in particular of (I) and a second area, the flexure of which along the z-axis is a second function (f2) of x and not of y. A distance measuring device is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.