Gradient index lens array having reduction properties
US4331380A · kind A · utility
38Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A gradient index lens array is provided with reduction and enlargement capabilities. Gradient index fibers are arranged in single row or double row (bundled) configuration with fibers increasingly departing from the perpendicular condition at the center of the array relative to object and image planes in a characteristic fan-like manner. Fiber lengths are adjusted to compensate for changes in total conjugate which occur because of the progressive tilting of the axes of the individual fiber lenses. This is achieved, in one embodiment, by grinding the faces of a lens array into a convex configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.