Optotune

Manually tunable condenser lens

ML-25-50 Lumilens

The shape of our manually tunable condenser lens can be adapted from flat to strongly convex by rotating an adjustment ring.

A tunable condenser lens is the ideal choice for illumination systems based on LEDs. In combination with an LED lens (TIR lens) large illumination angle variations can be achieved while maintaining an excellent spot quality and a very high optical efficiency. The low-dispersion lens material prevents color errors from spoiling the spot quality.

Advantages

One spot light suits various applications
Excellent spot quality for all tuning states (no intensity rings as in fixed lens shifting).
No color errors due to low-dispersion lens material
Highest optical efficiency (low light loss)
Easy to motorize

Adaptive lighting principle using the tunable condenser lens ML-25-50

Downloads

Product flyer

Application note ML-25-50 for lighting

ZEMAX modelling package

Videos

See how the ML-25-50 can reach beam angles of 8° to 40° without reducing the efficiency when tuning.

This video shows how the ML-25-50 can be used to vary the spot size of a simple LED spot-light.

The ML-25-50 features a geared rim, which makes is easy to motorize as can be seen in this example.