Vivarium enthusiasts worldwide appreciate the brilliant color reproduction via the reduced yellow content of the neodymium radiation lamp, however are irritated by the short lifespan of the radiation lamp. The JBL research department wanted to solve this problem and found a baffling solution:
The filament (tungsten) of neodymium radiation lamp oscillates in its carriage so vehemently that it bursts. Attempts made at stabilizing the filaments with a further carriage has not shown improvement. Halogen burners in contrast do not have any filaments and are considerably more stable. JBL has now integrated halogen burners as a light source, the light of which however as to first pass through a neodymium-coated bulb.
In this way it became possible to combine the reliability of a halogen radiation lamp with the advantage of the neodymium coating. Energy savings of 30% are also a very strong argument since a 70 W HaloDym radiation lamp produces the same light output as a 100 W neodymium radiation lamp. The color temperature of 2700 °K is slightly lower (hence a warmer light) as the color temperature of the halogen radiation lamp. Its development of warmth is gladly used as a source of heat: from a distance of 100 cm it warms JBL ReptilSpot HaloDym a white-coated wooden panel to 24 °C.