Photocoagulation apparatus
US4917486A · kind A · utility
156Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | May 20, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00863
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a photocoagulator using an infrared laser diode source (70). A dichroic beam splitter (68) is used to combine the optical path of the laser system with the viewing system. Such an arrangement affords the clinician an uninterupted, uncolor view of the patient's eye during treatment, without any risk of damage to the clinician's eye. There is also provided an alignment system using a visible laser diode (80). The alignment system may include a number of mutually non parallel beams which pass through different portions of the pupil and provide information on aim, focus and vignetting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.