Knowledge Base

Below are the light beam patterns for driving lights and fog lights. 


The driving light pattern produces a focused, pencil-shaped white light to reach far beyond high-beam headlights. Driving lights increase long range visibility at highway speeds and provide added safety while driving at night.


Fog lights provide a low, wide angle light pattern to increase short-range visibility. Ideal for added safety in fog, sleet and rain. Both amber and clear fog lights are suitable. Amber, while not penetrating, is more visible to approaching vehicles.

Below are the light beam patterns for tractors and implement lights. 


The spot beam is a long-range light for marking rows, fence lines etc.


The flood beam is an excellent worklight which illuminates wide and short areas, giving great medium range visibility.


The trapezoidal beam is an ideal, general-purpose worklight designed with a narrower pattern for longer visibility.


What is it?:  Lumen is a unit of light measurement otherwise known as luminous flux.

We use lumens to compare the total amount of light output from a light emitter. However, lumens isn't everything. In fact, lumens will only tell you a small part of the picture to what you're actually getting and what you're after. We need to know how the lumens are used. Lumens is comparable to the analogy of a car's brake horsepower.

Lumens is measured using a highly specialized light integrating sphere.


What is it?:  Lux is a unit of light measurement taking area into account. In other words, light intensity. 

We use lux to measure the amount of light output in a given area. One lux is equal to one lumen per square meter. Lux is a good measurement for determining and comparing the brightness of a beam. The beam is spread over a specific area and therefore we use lux to measure light intensity. However, lux is just another number and doesn't provide the complete picture of what we're after. We need to know the beam angle and look at beam shots to fully understand the picture.

Lux is measured using a lux meter.

Beam Angle (FWHM)

What is it?:  Beam angle is the angle of which a light is emitted. More specifically, it is the Full Width at Half Maximum.

Since there is no real way to measure the 'edge' of light we measure the beam angle from where the light is at 50% intensity (FWHM). By being able to measure where 50% light intensity ends, it gives us the majority of where the light is used thus representing the beam angle. Smaller beam angles will have an intense hot spot, where as larger beam angles will have a lesser intensity (due to a larger area). Take a look at our beam shots and see if you can gauge where 50% intensity ends, giving you the beam angle.


What is it?:  Watt is a unit of power consumed.

More wattage produces more lumens. We can use wattage and lumens to measure efficiency of the light emitter. In the case of LEDs the efficiency is much higher than that of older halogen lights, producing significantly more lumens per watt. However, more power also means more heat is produced.

A fixture's International Protection Rating specifies its ability to resist the ingress of solids (first digit) and liquids (second digit).  Please refer to the table below for specific levels of protection.



First DigitSecond Digit


Protected against solid objects over 12mm (e.g. fingers)Protected against direct sprays up to 15 dg. from the vertical


Protected against solid objects over 2.5mm (e.g. tools and wires)Protected against direct sprays up to 60 dg. from the vertical


Protected against solid objects over 1mm (e.g. tools and small wires)Protected against sprays from all directions - limited ingress permitted


Protected against dust - limited ingress (no harmful deposits)Protected against low pressure jets of water from all directions - limited ingress permitted


Totally protected against dustProtected against strong jets of water e.g. for use on shipdecks - limited ingress permitted



Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes



Protected against long periods of immersion under pressure

Example - IP65:Totally protected against dust (first digit) and protected against low pressure jets of water from all directions - limited ingress permitted (second digit)

About Totron

Totron specializes in LED lighting products for Vehicular, Industrial, Architectural and Commercial applications, such as LED Light Bars, LED Driving Lights, LED Work Lights, LED Searchlights, etc. Our products are widely used as Heavy equipment lighting, Agricultural machinery Lighting, such as Truck Lights, Forklift Lights, Marine Lights, Crane Lights, Road Roller Lights, Harvester Lights, etc.

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