Apparatus for beam shaping the pulsed laser emission of a remote sensing operating at wavelengths in the retinal hazard region
US11487128B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Sep 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a remote sensing device comprising a detector with a predefined field of view (FOV); and an emitter emitting pulses of light with an overall divergence angle θdiv in the retinal hazard region which further comprises at least one diffuser wherein the divergence angle after the diffuser is θ0; and at least one lens configured to transform the light from said diffuser to a determined divergence angle matching the FOV of the detector, or to a virtual image of predefined size appropriate in magnitude given the divergence in order to ensure the most restrictive position regarding eye-safety to be at the same position for pulsed and (quasi-)continuous wave operation; and to emit the transformed light. The invention further discloses a smartphone comprising such a remote sensing device characterized by its improved eye-safety properties for myopic people.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.