- on Microcontrollers
- Published in issue 12/2002 on page 0
Scanning Slides with an ELS
Slide scanners are available in all sorts and sizes, but if you want a reasonable level of quality they are rather expensive. Besides that, the average computer table is already crowded enough. Elsewhere in this issue, under the title ‘Illuminating Film’, there is a description of a converter for powering an electro-luminescent sheet (ELS), which is also referred to as a ‘backlight’ for an LC display. The quite bright, uniform white light produced by an ELS gave us the idea for the following experiment.