Method and apparatus for delivering laser energy for ophthalmic use
US4520816A · kind A · utility
Inventors
Key dates
| Filing date | Jan 12, 1983 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Jan 12, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00889
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmic laser surgery system includes a slit lamp (14) with an illuminator (16) and a biomicroscope (26). The high power laser (34) delivers a laser beam (36) which is mixed with the output from a lower power laser (38) with a dichroic mirror (54). The output of the dichroic mirror (54) is input to the harmonic generator (60) to generate harmonics thereof. The output of the harmonic generator (60) is optically directed to move along the rotational axis through rotational supports (22) and (30). The laser beam is then directed by mirrors (72) and (80) to a focusing lens (90) and a filter (92) to a dielectric mirror (94). The dielectric mirror (94) mixes the illumination from the slit lamp (14) with the laser beam for delivery to the eye (12). A micromanipulator (102) adjusts the position of the dielectric mirror (94). A control circuit (104) controls the operation of the laser (34). A protection device (110) has filters for disposal within the path of the viewing axis of the biomicroscope to prevent damage to the surgeon's eyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.