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Comprehensive evaluation of headlamps

News Trade News2021-09-06 19:39:32

When we walk at night, if we hold a flashlight, we will have a hand that cannot be freed. In this way, we cannot deal with unexpected situations in time. Therefore, a good headlamp is what we need to have when we walk at night. By the same token, when we camp at night, wearing headlamps can free our hands to do more things.

The role of headlights

The headlamps may be helpful when you perform the following tasks:

  • Kayaking
  • Holding trekking poles
  • Looking after campfires
  • Rummaging in the attic
  • Gazing into the depths of the motorcycle engine
  • Reading in your tent
  • Exploring caves
  • Walking at night
  • Running at night
  • Disaster emergency light source

 

Let's learn some optical terms first.

(1) Luminous flux: the energy radiated by the light source in the form of visible light waves per unit time.

(2) Lumen: The standard unit of luminous flux. Simply put, 1 lumen is equal to 1 international candle illuminating the luminous flux at a distance of 1 centimeter and an area of ​​1 square centimeter. The luminous flux of a 40-watt ordinary white woven lamp is 350-470 lumens.

(3) Luminosity: Generally, the light source emits different luminous flux due to the different light-emitting directions.

(4) Strength. Luminosity is a measure of the energy released by a light source in a specific direction.

(5) Candlelight: The standard unit of luminosity.

(6) Illuminance: All the amount of visible light received per unit area on the surface of the object illuminated from all directions.

(7) Lux: The standard unit of illuminance (1 lumen of light beam illuminates 1 square meter of the work surface to get 1 lux of illuminance).

(8) Brightness: The intensity of light reflected by an object seen from a certain direction, that is, the intensity of light reflected by a unit area in a certain direction, unit candela/square meter.

Common batteries

1. Alkaline battery is the most commonly used battery. Its electric energy is higher than that of a dead battery. It cannot be recharged. When it is at a low temperature of 0F, it only has 10%-20% power. The voltage will be significantly reduced during use.

2. Nickel-cadmium batteries: They can be charged thousands of times and maintain a certain amount of power. It cannot be compared with the electricity stored in alkaline batteries. The low temperature of 0F still has 70% power. It is best to carry high power during rock climbing. The energy battery is 2 to 3 times higher than the standard battery.

3. Lithium battery: It is two times higher than the normal battery voltage. A lithium battery has two alkaline batteries that are more than twice the ampere value/hour. It is at 0F as if used at room temperature, but it is very expensive, and its voltage can be maintained. Constant. It is especially useful at high altitudes.

The choice of lamps and the use of headlamps is one of the most important pieces of equipment for survival in the wild. The correct selection of tools can make you easier to deal with in different environments. There are many types of headlamps, the function, price, weight, volume, versatility and even appearance will affect your final decision. So the following is my comment on the appearance structure and functional design of the headlamp:

CREE LED Work Headlamp

LED camping headlight

Color temperature (CCT):
6000K (daylight warning)
Input voltage (V):
AC 110V (±10%)
Product weight (kg):
0.195
usage:
camping
Lighting time (hours):
4
Battery:
2*3.7v/1500mah rechargeable battery

12LED outdoor camping Headlamp

LED camping headlight

Color temperature (CCT):
5500K-7500K
Input voltage (V):
DC 4.5V
Product weight (kg):
0.059
usage:
camping
Lighting time (hours):
>12
type of battery:
AAA

Nextorch myStar R AA focus headlamps

Camping headlight

model:
myStar R AA
type of battery:
Airport Authority
usage:
camping
Lighting time (hours):
>12
brightness:
600 lumens

Led Head Light Headlamp Flashlight

LED hunting headlight

Color temperature (CCT):
6000K (daylight warning)
Input voltage (V):
DC 6V
usage:
Camping, camping fishing exploration inspection
Lighting time (hours):
6
brightness:
1000lm

Of coursehttps://www.thrgo.com/productsthere are many of the same headlamps for you to choose from!

 

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