UCL Department of Medical Physics and Bioengineering
- Homepage
- Research
- staff
- Undergraduate
- MSc
- PhD
- Views
- General teaching pages
- Adam's homepage
- Jem's Homepage
- Prospective Students
- UCLH Department
- video
- Careers in Medical Physics and Bioengineering
- International Links
- Optical Topography
- How to Apply
- Open Day
Search Medical Physics
Department Homepage
BORL Homepage
BORL resources
Introduction and resources
Personnel
Publications
BORL vacancies
Public Engagement
Contact us
BORL research
Optical and Multimodal Imaging
Theory and Modelling
NIR Spectroscopy
Photoacoustics
Medical Lasers and Endoscopy
Acousto-optics
Collaborators
UCL Centre for Space Medicine
Experimental Imaging
Other systems
Retinal Imaging
We have designed a fast-switching LED-based discrete-wavelength light source that can be used in combination with a high sensitivity CCD camera to obtain movement-free multispectral image sequences of the fundus. The system is capable of acquiring images at least one order of magnitude more quickly than the existing tunable filter system used by our group.
This photograph shows the ocular microscope with the CCD camera mounted on top - the light source is on the bench
This is a block diagram of the whole system
And here are the first test images we took. From left to right the wavelengths are 535 nm, 592 nm, 630 nm and 640 nm. The exposure time in the top row is 100 ms per image, and 25 ms in the bottom row.
