Ophthalmic photocoagulating apparatus using a laser diode and a lens system for the apparatus
US5442487A · kind A · utility
56Cited by
15References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Jan 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens system disposed between the emitting area of a laser diode and a focal plane for focusing the output beam of the laser diode on the focal plane is disclosed, in which system, as regards a direction parallel to the lengthwise direction of the emitting area of the laser diode, the emitting area and the focal plane are conjugate, and a telescopic optical system is formed of the lens system to form a telescopic image indicative of the exit pupil of the lens system at an infinite distance and to make small the convergent angle of the laser beam incident on the focal plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.