White light emitting diode (LED) illuminator for ophthalmic endoillumination
US8292434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0684
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmic endoilluminator is provided. The ophthalmic endoilluminator includes one or more white light emitting diodes (LEDs), an additional light source, a first optical assembly, an optical coupling element, and an optical fiber optically coupled to the optical coupling element. The white LED is capped with a phosphor layer. The additional light source illuminates at least a portion of an exterior surface of the phosphor layer within an absorption band of phosphor material of the phosphor layer in order to excite the phosphor layer and produce additional white light. The first optical assembly receives and substantially collimates the white light. The optical coupling element receives the substantially collimated white light from the first optical assembly and directs the light to an optical fiber. The optical fiber is then used to conduct the white light into an eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.