Optical projection system with microlens arrays
US11199761B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2021 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an optical projection system with microlens arrays. The optical projection system includes a light source, a collimating lens, a first microlens array, a projection source, a positive lens module, a second microlens array and a receiving surface which are arranged in sequence. The first microlens array includes n first microlens units arranged in an array. The projection source includes n projected image units arranged in an array. The second microlens array includes n second microlens units arranged in an array. The first microlens unit and the second microlens unit which are opposite to each other have a common optical axis. According to the system of the present invention, sub-real image units can be compounded and superposed on the receiving surface, such that optical crosstalk between adjacent optical channels can be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.