Reflector Systems used in Hella Work Lamps

The Paraboloid Work Lamp

A conventional work lamp has a reflector in the mathematically defined shape of a paraboloid. The reflector captures the light of the bulb and directs this forward to the area to be illuminated.

The specific light distribution pattern is produced by optical lenses and prisms in the profiled cover lens which achieve limited scattering of the beam of light. Effective paraboloid headlamps need a large reflector in order to be able to capture a large amount of light from the bulb.

Modern Free-Form (FF) Work Lamps

In contrast to the paraboloid work lamps, the Free-Form (FF) reflector does not incorporate a cover lens
that distributes and scatters light. The computer-calculated Free-Form (FF) reflector produces the
required beam pattern.

Free-Form (FF) Work Lamp with H9 Bulbs

Easy replacement of the H9 bulb without having to open the lamp. Hella is the first supplier worldwide to use H9 bulbs in work lamps. The use of H9 bulbs has important advantages for the operator:

•	H9 bulbs offer better light output than H3 bulbs. H9 bulbs supply some 45% more luminous flux.
•	The bulb is accessible from the outside, which means fast and easy replacement without tools.

Free-Form (FF) Work Lamps

Advantages of Free-Form (FF) Technology

1.	Small Free-Form (FF) reflectors capture more light from the bulb and achieve a considerably larger degree of light effectiveness.
2.	Much larger beam scattering can be realised for extremely wide beam patterns.
3.	Homogeneous illumination means more pleasant working light with soft transitions at the edges without harsh contrasts.
4.	Minimises installation downtime, power and maintenance costs.