Monolithic cylindrical optic
US5553174A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1993 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Jul 14, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0966
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A new cylindrical minilens and a new lens system for collimating and circularizing the output beam from a laser diode are provided which can be mounted outside the can of a laser diode. The system is made up of two lens elements. The first lens element is a collimating lens which is located to receive the output beam from the laser diode. The collimating lens is typically a standard small lens used in the art for collimating the output beam on a first axis, such that the output beam when it leaves the collimating lens has a desired amount of collimation and has a desired dimension on a second axis that is orthogonal to the first axis. The second lens element is a cylindrical minilens of new design which is located to receive the output beam from the collimating lens, with the cylindrical minilens configured for changing the size of the output beam such that the output beam has a first desired dimension on the first axis and a desired amount of collimation of the output beam on the second axis, so that the output beam is collimated to a desired amount on each axis and has a desired ellipticity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.