As the name suggests, the headlamp is a light source that can be worn on the head or a hat, and can be used to free hands and illuminate.
1.Headlamp brightness
The headlamp must be “bright” first, and different activities have different brightness requirements. Sometimes you can’t blindly think that the brighter the better, because artificial light is more or less harmful to the eyes. It is enough to achieve the appropriate brightness. The unit to measure brightness is “lumen”. The higher the lumen, the brighter the brightness.
If your first headlight is used for running races at night or hiking outdoors, in sunny weather, depending on your eyesight and habits, it is recommended to use between 100 lumens and 500 lumens.
2.Headlamp battery life
The battery life is mainly related to the power capacity of the headlamp. The usual power supply is divided into two types: replaceable and non-replaceable, and there are also dual power supplies. The non-replaceable power supply is generally a lithium battery rechargeable headlamp. Because the shape and structure of the battery are compact, the volume is relatively small and the weight is light.
For most outdoor lighting products (using LED lamp beads), usually 300mAh power can provide 100 lumens of brightness for 1 hour, that is, if your headlamp is 100 lumens and uses a 3000mAh battery, then there is a high probability that it can light for 10 hours . For ordinary Shuanglu and Nanfu alkaline batteries made in China, the capacity of No. 5 is generally 1400-1600mAh, and the capacity of No. 7 is smaller. Good efficiency powers the headlamps.
3.Headlamp range
The range of a headlamp is commonly known as how far it can illuminate, that is, the light intensity, and its unit is candela (cd). 200 candela has a range of about 28 meters, 1000 candela can have a range of 63 meters, and 4000 candela can reach 126 meters.
200 to 1000 candela is enough for ordinary outdoor activities, while 1000 to 3000 candela is needed for long-distance hiking and cross-country races, and 4000 candela products can be considered for cycling. For activities such as high-altitude mountaineering and caving, you can consider products with a price of 3,000 to 10,000 candela. For special activities such as military police, search and rescue, and large-scale team travel, you can consider high-intensity headlamp with a price of more than 10,000 candela.
4.Headlamp color temperature
Color temperature is an information that we often ignore, thinking that the headlamps are bright enough and far enough away. As everyone knows, there are many kinds of light. Different color temperatures also have an effect on our vision.
5.Headlamp weight
The weight of the headlamp is mainly concentrated in the casing and the battery. Most manufacturers of the casing still use engineering plastics and a small amount of aluminum alloy, and the battery has not yet ushered in a revolutionary breakthrough. The larger capacity must be heavier, and the lighter one will definitely sacrifice The volume and capacity of a part of the battery. So it is very difficult to find a headlamp that is light, bright, and has a particularly long battery life.
6.Durability
(1) Resistance to falling
(2) Low temperature resistance
(3) Corrosion resistance
7.Waterproof and dustproof
This indicator is the IPXX we often see. The first X stands for (solid) dust resistance, and the second X stands for (liquid) water resistance. IP68 represents the highest level among headlamps.
Post time: Nov-28-2022