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Lights
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Whether filming, diving at night or in caves, or diving when light quality and quantity is generally insufficient, the demands of divers often remain unsatisfied. "There is never enough light" is a recurring phrase in diving circles that we could not ignore.
A few assumptions are necessary: lens design is determined by intended use and bulb type. Bulb strength must be proportional to the surface area being illuminated and/or distance. Light intensity is inversely proportional to the surface area being illuminated. Bulbs using xenon instead of krypton produce a more powerful light flow (+10%) whilst energy consumption remains the same.
To summarise: the lens for video camera work should be of the wide beam type (approximately 75°) with the light diffused uniformly (without the usual "white" mark at the centre) to correctly illuminate the target being filmed. The lens used for diving at night or when visibility is reduced should be of the medium beam type (approximately 30°) to illuminate a reasonably large surface area efficiently. The concentrated beam lens (approximately 15°) is used for smaller surface areas but light efficiency is greater.
No other company has been able to satisfy all market demands, i.e. power, lens and/or light beam, size and weight. All our lights are fitted with an exclusive electronic protection circuit which acts on:
- Battery voltage to avoid excessive discharge.
- Temperature of the various electronic components.
- Discharge current, if this is too high, by switching OFF the light. If necessary a timer can be used allowing usage more than once for a period of 10 seconds each time.
To recharge, unscrew and remove the lens holder ring nut, in the open air. This allows any battery emission to freely escape as well as having to avoid removing the battery pack from its protective casing each time.
 The following are typical technical features of the lights manufactured by us:
- Body and ring nut in surface treated light alloy, and components in special fibreglass reinforced polymer.
- Elliptic lens-reflector with hammered light (A), concentrated beam.
- Elliptic lens-reflector with faceted light (B), medium beam.
- Elliptic lens-reflector with metallic light (C), wide diffused beam.
- Thick tempered crystal (6 mm).
- Twin o-rings on the base, ring nut and switch lever.
- Protected and current limited battery recharger, 10-14 hours recharge time.
- Supplied as standard: adjustable handle, articulated video camera support, spare o-rings, xenon or halogen bulb, 13 kg (approx.) load rubber support, case, display showing individual battery and light tests, instruction manual.
- Optionals: automatic battery charger, 12 volt scooter battery charger, 110 volt power supply recharge unit, spare xenon bulbs.
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