Illumination apparatus
US11927339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2020 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Apr 24, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination apparatus (1) for producing structured light and flood illumination, the illumination apparatus comprising a microlens array (4) comprising microlenses which are arranged at a pitch P in at least a first direction, and a first array (18) of first light sources (9) and a second array (19) of second light sources (10), the first light sources (9) being configured to emit light at a wavelength L, wherein the first light sources (9) are located at a distance D from the microlens array (4), wherein P2=2LD/N and N is an integer, and wherein a size of the second light sources (10) is greater than a size of the first light sources (9), such that the light sources of the first array (18) produce structured light and the light sources of the second array (19) produce a continuous area of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.