Fabrication of integral lenses on LED devices
US4797179A · kind A · utility
28Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/819
Abstract
Integrated lenses are fabricated on LED devices by chemical etching mesas through mask openings which are non-circular. The mask is removed and the mesas are then etched to form spherical lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.