Product Overview
The LED Lenser H5 features special optics that not only focus the light to form a super-bright, long-distance beam, but they also generate an easy-to-read-by, circular low beam. In fact, it‘s theonly headlamp on the market to offer this focusing technology. Lightweight, with a soft headband, means wearing it for long periods of time is still comfortable and a red backlight makes it ideal for campers and backpackers. Traditionally light-focusing systems have consisted of either a lens, or a reflector. Lenses have the advantage of emitting a homogenous light pattern for distances almost 70% of the light is scattered and lost. Conversely, while reflectors do a better job of capturing a higher percentage of light for long-distances, when they are used for up-close reading scattered light causes "rings" and "holes" in the light pattern leading to eye fatigue. In both these cases, the lumen count (brightness) loses its validity as light is misdirected and wasted. That's why they decided to try something different. If you pull together the strengths of the lens and reflector into one combined system, you achieve clear, homogeneous light spill for up-close reading and a sharply-focused beam for long-distance viewing. This is exactly what they have done with the Advanced Focus System (AFS); a unique and patented lens/reflector optic. AFS means reading the map up-close is easy on the eyes and then focusing to find the path or landmark in the distance, clear and bright.
