Femtoprojector optical systems
US10353204B2 · kind B2 · utility
5Cited by
13References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2017 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Oct 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0196
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variety of femtoprojector optical systems are described. Each of them can be made small enough to fit in a contact lens using plastic injection molding, diamond turning, photolithography and etching, or other techniques. Most, but not all, of the systems include a solid cylindrical transparent substrate with a curved primary mirror formed on one end and a secondary mirror formed on the other end. Any of the designs may use light blocking, light-redirecting, absorbing coatings or other types of baffle structures as needed to reduce stray light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.