Stacked-lens assembly and fabrication method for same
US9915763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2015 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2551/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A stacked-lens assembly includes a lower substrate and an upper substrate. The lower substrate includes a lower-substrate top surface having thereon a lower element and an inner spacer, the inner spacer at least partially surrounding the lower element. The upper substrate includes an upper-substrate bottom surface opposite the lower-substrate top surface and having thereon an upper element and an outer spacer, the outer spacer (i) being attached to the inner spacer and (ii) at least partially surrounding the upper element. In any cross-section of the stacked-lens assembly parallel to the upper substrate and including both the inner spacer and the outer spacer, the entirety of the inner spacer is within a perimeter of the outer spacer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.