Under side of longitudinal slide
Bearings detail view
Upper LED, lower old light source (end of glass rod)
Lower LED, upper old light source (end of glass rod), though with misaligned lamp position it is not as bright as it can be.
This is the test circuit of the new LED light. Left: red, green, blue and white LED.
Right: a small test circuit board for constant current source for LEDs.
Power for LEDs come from battery (far right) or from DC power supply (top).
LEDs are from Lumileds type Luxeon star.
Circuit diagram of constant current source.
New glass rod with spherical input end.