There are several options which can be added to our lamps. Some need to be specified when ordering, some can be added later.
The Scurion® lamp is available with an ultraviolet LED as an option. In addition to the two white power LEDs, a third 375 nm UV LED is mounted inside the lamp head (new! We doubled the performance to 20 mW).
UV light reveals many things not visible with white light :
- a lot of minerals emit light in different colours when lit by UV
- small cave-dwelling animals might be seen better
- when dye-tracing, smaller amounts of the dye are visible if it is UV-active
The UV LED can be selected like the other lighting modes by cycling through a number of presets. It can be programmed individually (or disabled if necessary).
Warning: Do not look directly into any UV source!
Minerals in normal and UV light:
legend: below, green = Hyelith-Opal, Utah/USA ; blue = Fluorit, Weardale/GB ; yellow = Wernerit, Quebec/CA ; red = Strontio-Calcit, Gerorrano/Tosk./IT
There is one drawback when ordering the UV lamp head: The non-UV lamp uses a polycarbonate window with scratch resistant coating. This is extremely durable, unfortunatly, it is not transparent for UV light. The UV version uses an acrylic glass window, which scratches more easily. Try not to clean the window by wiping the dirt away, as this may give you scratches in the long run. Clean the lamp head under running water if possible (some caves have waterfalls...). In any case, spare glasses are available and changing the glass is not too difficult.
Here another nice sample of a gypsum crystal found in Wales. Photo by courtesy of John Stevens:
If your helmet has a holder for "blade mount" lamps, you can use our blade mount option. It is made of stainless steel and replaces the regular mounting bracket.
Our lamp head has an LED bar, which mostly displays battery charge status. This is quite practical, as you always know how much energy is left in the battery. However, you can't see it when you wear your helmet together with your lamp. Of course you can take off your helmet, but there is a better way... Credit for this brilliant idea goes to Peter, who suggested it in the first place: We add a lens to the lamp head, which projects the led bar to your hand (if you hold it in front of the lamp) or a nearby wall.
Using an optics design software, we designed the optimal lens and layout:
The five LEDs are projected using a plano-convex lens to the image surface (your hand for example). Of course this is no photographic quality objective, but sufficient to see the remaining power of your battery. There was no experimenting with this design, it was designed, built and worked at the first try. Image quality is actually so good that you can see the bond wires of the LEDs.
The battery case is intended to be mounted on the helmet. This balances the helmet well and does't give you a hassle with cables getting caught at stalactites hanging around. The cable (BTW) is made of a very durable, cut-resistant material otherwise used for cabling cranes or concrete mixers on construction site. This, in contrast to cheap PVC cables, ensures you'll never be able to break it and it remains watertight (also in contrast to PVC) at the feedthroughs.
If you don't want to mount the battery case on the helmet, we can provide a longer cable. It has a slightly higher resistance so efficiency is affected a bit (not by a large amount, but the whole design is about very high efficiency, every percent counts!). Ask for details. We will not mount connectors on the cable of the caving lamps - there are no small, reliable (in terms of cave use) connectors available and we will not compromise the reliability of our lamp with an unsuitable connector.