Two-dimensional optics element for correcting aberrations
US4611883A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1983 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Nov 10, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/335
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Auxiliary depressions, disposed in the substrate of an integrated optic device which employs geodesic lenses, to adjust the effective focal distance of the geodesic lenses and correct optical aberrations of the geodesic lens system are disclosed. The integrated optic device comprises a substrate, a planar waveguide disposed thereon, a laser source at one end and a detector array at the other end, and geodesic lenses disposed in the substrate. The auxiliary surface depressions are non-spherical, symmetrical about a longitudinal axis and disposed in the substrate between either end of the substrate and the geodesic lens closer to that end. By increasing the path length of light transmitted along the surface layer, these auxiliary depressions allow adjustment of the effective focal distance of the geodesic lenses. Also, non-symmetrical auxiliary surface depressions which correct for optical aberrations in the geodesic lens system are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.