Apparatus for irradiating an area with a controllable pattern of light
US5514127A · kind A · utility
41Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for irradiating an area with a controllable pattern of light comprises a laser (2), which illuminates a spatial light modulator (6). The resulting spatially modulated light then passes to a cholesteric liquid crystal polymer beam-splitter (10) which reflects it to an image surface (13) of an endoscope (12). The endoscope relays it to another image surface (40) whence it is focussed on the area to be irradiated. This light may be used for photodynamic therapy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.