Register Here | Login | My Account | Shopping Cart | Customer Service | Search| Items in Cart (0) | Quotes (0)
Call 1-800-369-6671
(Military/Intl Sales - 214-616-6180)

Vast Inventory for Fast Shipping. Custom Builds Available, Rentals and Sales.
Most items in stock for fast shipping!! UPS Ship Map Credit cards & Paypal Accepted
Home - Articles You're NOT logged in, Please log in   

Company Information

Product #:

ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
Headlights - Headlamps - Hard Hat Lights
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting

06/19/13 Workplace Lighting: Illuminance and Lux

Article- June 2013 By Larson

 LED High Bay Light Fixture

Larson Electronics 300 Watt LED High Bay Light Fixture

 Lighting in the industrial workspace has a profound effect on every process in the work area. Accuracy, coordination, alertness, efficiency, safety, and more are all to one extent or another dependent upon proper illumination and can be adversely affected when the quality and amount of lighting available does not meet minimum requirements. For most buildings, lighting layout and design is determined during the building’s planning and design stage. This is usually effective for providing basic illumination, but is generally inadequate when it comes to providing the optimal illumination needed for a fully equipped workspace.

Once a building, be it an office, warehouse, or manufacturing facility, is fully finished and equipped, general overhead and wall mounted lighting cannot provide the proper amount or quality of light directly to the work surfaces. Walls and partition additions, and equipment installation and layout changes affect how well lighting is dispersed, and in order to correctly illuminate different areas it becomes necessary to install dedicated fixtures geared towards providing supplemental illumination capable of directly illuminating a particular workspace.

The amount and quality of illumination needed for a specific location depends in large part upon the type of work being performed. Lighting levels for a general office space will differ from those needed in a manufacturing area, as will the levels needed for warehouses or locations where close work such as electronics and design testing are performed. The basic measure of lighting levels is noted as Illuminance and is measured in foot candles.  A foot candle is equal to one lumen of light density per square foot, and one lux is equal to one lumen of light density per square meter. In essence, this is the amount of light actually measured at a targeted surface. This is why you will sometimes see the light output of a particular lamp noted as producing 5 lumens at 8 feet, or 8 lux at 3 meters for example. This is a more effective way to measure illumination in the workplace since it is not really the total lumens a lamp puts out that determines how effectively it will illuminate a task area, but rather how many lumens actually reach the task surface.

For different tasks and types of locations there are different recommended levels of illuminance. This is usually directly related to the complexity and detail of the work being performed. Additionally, it is also important to include color quality of lighting as well when considering effectively illuminating a particular task area. Different types of lamps can produce light with different color qualities. For example, a typical incandescent lamp produces more of its light in the orange/yellow portion of the light spectrum.

Although most of us are quite accustomed to the traditional incandescent bulb and consider it to be a source of “white” light, the truth is that this light is more yellowish in actual color. This color quality of the light in question can have a significant effect on how we perceive the object it is illuminating. For a more extreme example, consider those large parking lots where you see the high or low pressure sodium lamps in use. These lamps produce light that is very reddish/orange in color, and as a result, when you look at the many cars in the lot, their paint colors appear very muted and oftentimes difficult to differentiate. A blue car can appear almost black under these lights, and a white car may appear light red for example. So, you can just imagine how hard it would be to work with electronics and wiring under the light from a low pressure sodium lamp; yellow wires would look orange, white wires might appear red, and color coded circuits and connectors would become an indecipherable mess!

For most general applications there is a recommended level of illuminance. General illumination, such as walkways or open spaces require only the minimum illumination, while areas where detail oriented tasks are performed can require very high illuminance levels. For example, a parking lot might require only 20 to 50 lux since it is only necessary to be able to navigate while walking to a vehicle. In a technological manufacturing setting however, lux levels as high as 1000 to 2000 lux can be necessary.

Below are some basic recommended lux levels for various locations or types of tasks provided by the Illuminating Engineering Society. Keep in mind these are general guidelines and not official recommendations such as those provided by regulatory bodies such as OSHA. For more stringent guidelines and regulatory compliance you should consult with your local agency tasked with providing such information.


ACTIVITY                       CATEGORY     LUX           FOOTCANDLES
Public spaces with dark           A       20-30-50          2-3-5  
Simple orientation for short      B       50-75-100        5-7.5-10
temporary visits                  
Working spaces where visual       C      100-150-200       10-15-20
tasks are only occasionally
Performance of visual tasks of    D      200-300-500       20-30-50
high contrast or large size
Performance of visual tasks of    E      500-750-1000      50-75-100
medium contrast or small size
Performance of visual tasks of    F     1000-1500-2000    100-150-200
low contrast or very sm size
Performance of visual tasks of    G     2000-3000-5000    200-300-500
low contrast or very sm size
over a prolonged period
Performance of very prolonged     H     5000-7500-10000   500-750-1000
and exacting visual tasks     
Performance of very special       I   10000-15000-20000 1000-1500-2000
visual tasks of extremely low
A-C for illuminances over a large area (ie lobby space)
D-F for localized tasks
G-I for extremely difficult visual tasks

When considering adding illumination or improving existing lighting systems it is a good idea to include the location and type of work that will be performed into your assessments. Poor lighting can slow worker performance, increase error rates, lower worker stamina and endurance, and even adversely affect the overall safety of a given location or task. Although factors such as color quality and lamp color temperature also affect the effectiveness of a given lighting system, unless there is adequate illuminance at the work surface, lighting will not reach its fullest potential.

Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.