Petzl solves dazzle for LED headtorches headlights Led Luminaries

Petzl solves dazzle for LED headtorches headlights Led Luminaries

2013/07/19

The perennial problem with head torches is that you move through a dark environment without a problem, then look at a nearby object, like a map, and get dazzled.

Or you walk down a path with shrubs on either side, and can’t see into the distance because the shrubs are lit too brightly.

The problem is particularly bad now that high-outputs LEDs are being used.

If the headtorch is fully-adjustable in beam width and intensity, like the Led Lenser H7 for example, both these issues can be solved by remembering to manually move the controls early.

Last year, French headtorch maker Petzl revealed a product that automated both the setting of intensity and beam width which appears to work properly, all the time.

Its leap of lateral thinking was to include a light sensor in the headtorch – which may even be an image sensor – with proper imaging optics to view the forward scene, and a microcontroller to control the relative intensities of two beams, one narrow and one wide, to deliver suitable non-dazzle illumination.

This was implemented in its Nao product, and the system reacts so quickly that few reviewers have been able to catch the system out. And intensity levels and limits are actually programmable over an included USB connector.

Now the firm has announced a simpler product with similar technology as part of its Tikka range.

Tikka RXP (scroll down) will also have two beams, and ramp from 7-180 lm.

“Light output and beam pattern instantly adjust to the environment. The wide, mixed or focused beam allows the user to benefit from lighting that adapts to each situation, from close-range to distance vision,” claimed the firm.

There will also be the even simpler Tikka R+, which looks like it skips the combined mode and operates across 7-135 lm.

Batteries

All three headtorches have rechargeable Li-ion batteries, and an additional clip-on case is required to hold conventional cells for back-up operation. The one on the right here is a 3xAAA version that fits the RXP and R+.

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