Apparatus for homogenizing the non-homogeneous light distribution of a laser beam
US5068515A · kind A · utility
17Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Dec 19, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0644
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for precise, homogeneous and sharp-edged irradiation of a large area with the light of a laser beam (5), which can be used especially for large-area photodynamic therapy, is provided with a multimode fibre (10), which is illuminated by the laser beam by way of a microscope objective (4) and has a length of approximately 5 meters, and the end face (13) of which is imaged onto an irradiated area (7) of a working surface (6) by means of a microscope (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.