Title:
IMPROVEMENTS IN OR RELATING TO SCANNING OPHTHALMOSCOPES
Document Type and Number:
WIPO Patent Application WO/2011/135348
Kind Code:
A3
Abstract:
The present invention provides a scanning ophthalmoscope for scanning the retina of an eye and a method of scanning the retina of an eye. The ophthalmoscope (10) comprises a source of collimated light (12), a first scanning element (14), a second scanning element (16) and a scan relay device (18) having two foci (18a, 18b). The source of collimated light (12), the first and second scanning elements (14, 16) and the scan relay device (18) combine to provide a two-dimensional collimated light scan (21) from an apparent point source (19). The scanning ophthalmoscope (10) further comprises a scan transfer device (20), wherein the scan transfer device (20) has two foci (20a, 20b) and at least one vertex (20c) and the apparent point source (19) is provided at a first focus (20a) of the scan transfer device (20) and an eye (22) is accommodated at a second focus (20b) of the scan transfer device (20), and wherein the scan transfer device (20) transfers the two-dimensional collimated light scan (21) from the apparent point source (19) into the eye (22). The two foci (18a, 18b) of the scan relay device (18) and the two foci (20a, 20b) of the scan transfer device (20) define a first plane and the two foci (20a, 20b) and the at least one vertex (20c) of the scan transfer device (20) define a second plane and wherein the first and second planes are substantially parallel.
Inventors:
THOMSON MARTIN (GB)
SWAN DEREK (GB)
GRAY DAN (GB)
PEMBERTON STEPHEN (GB)
SWAN DEREK (GB)
GRAY DAN (GB)
PEMBERTON STEPHEN (GB)
Application Number:
PCT/GB2011/050818
Publication Date:
February 09, 2012
Filing Date:
April 26, 2011
Export Citation:
Assignee:
OPTOS PLC (GB)
THOMSON MARTIN (GB)
SWAN DEREK (GB)
GRAY DAN (GB)
PEMBERTON STEPHEN (GB)
THOMSON MARTIN (GB)
SWAN DEREK (GB)
GRAY DAN (GB)
PEMBERTON STEPHEN (GB)
International Classes:
A61B3/12
Domestic Patent References:
| WO2003020121A1 | 2003-03-13 | |||
| WO2011018644A1 | 2011-02-17 | |||
| WO2010125394A1 | 2010-11-04 |
Foreign References:
| GB2440163A | 2008-01-23 | |||
| US20070010313A1 | 2007-01-11 | |||
| US5798823A | 1998-08-25 |
Other References:
See also references of EP 2563205A2
Attorney, Agent or Firm:
MURGITROYD & COMPANY (165-169 Scotland StreetGlasgow, Strathclyde G5 8PL, GB)
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