Opto Source, D1-1040.00, £14.95
Our Opto Source is a complete stand-alone item containing 9 bright LEDs arranged in the special shape of the letter 'F'. When viewing the source with a pinhole camera the image is clearly seen inverted in the vertical plane and in the horizontal plane. This is not possible with the traditional sources such as a a candle or a carbon filament lamp. The PCB is mounted on a wooden lens holder and the Opto Source is supplied with batteries.
Use our Opto Source to verify the lens formula and for calculating the magnification for different lens to source distances.
Suitable bi-convex lenses of different focal lengths are available as well as lens holders.
This photograph shows vertical & horizontal inversion.
This photograph was taken in daylight i.e. there is no need for blackout conditions as the LEDs are very bright.