Dive lights from FWT Schulz offer you the following features:
- They are made of a sea-water-resistant aluminium tube, 4mm thick.
- They are anodised in black or silver.
- They have a 6mm (the GS100 8mm) thick, chemical hardened mineral glass panel.
- The mantle is sealed with a double O-Ring in the screw thread.
- Easy handling due to a big handy turn-switch with patented adjustment and easy twist-off handle.
- All our dive lights are made in Germany.
- You can order all the spare parts for your lights at anytime.
Technical Information
Our dive lights are made for professional as well as challenging diving.
Due to their high quality standard they are used in the military and police force in several countries. They are perfect for working under-water, especially under-water-shootings up to a water depth of 200m. Due to the employment of high-tec-material and computerized production FWT-Schulz gives you a 2-year-guarantee of all their lights (1-year for the battery).
Differences between lumens and lux
The difference between the units lumen and lux is that the lux takes into account the area over
which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square
metre, lights up that square metre with an illuminance of 1000 lux. The same 1000 lumens, spread
out over ten square metres, produces a dimmer illuminance of only 100 lux. Mathematically, 1 lx =
1 lm/m2.
Illuminance Example
10-5 lux Light from Sirius, the brightest star in the night sky
10-4 lux Total starlight, overcast sky
0.002 lux Moonless clear night sky with airglow
0.01 lux Quarter moon
0.27 lux Full moon on a clear night
1 lux Full moon overhead at tropical latitudes
3.4 lux Dark limit of civil twilight under a clear sky
50 lux Family living room
80 lux Hallway/toilet
100 lux Very dark overcast day
320–500 lux Office lighting
400 lux Sunrise or sunset on a clear day.
1,000 lux Overcast day; typical TV studio lighting
10,000–25,000 lux Full daylight (not direct sun)
32,000–130,000 lux Direct sunlight