Light Level, also referred to as Illuminance, represents the amount of light that is measured on a surface (which is plane). Or, it can be described as the total luminous flux incident that strikes on a plane surface. It is measured per unit area and is commonly known as LUX. https://www.saving-light-bulbs.co.uk/blog/a-guide-to-lux-levels/

1. Call us on 01420 520521 - Open 7 Days ........... PRICES INCL. VAT
Free Delivery on orders over £50. NEXT DAY delivery available for orders placed before 12:00
Home :: Blog
Saving Light Bulbs - The Energy Saving LED Specialists
Light Level, also referred to as Illuminance, represents the amount of
light that is measured on a surface (which is plane). Or, it can be
described as the total luminous ux incident that strikes on a plane
surface. It is measured per unit area and is commonly known as LUX.
LIGHT BULB GENERAL INFORMATION, TECHNOLOGIES, THE ENVIRONMENT
A GUIDE TO LUX LEVELS
10TH MARCH 2018 DENNIS LEAVE A COMMENT
SLB Blog  

2. Understanding LUX
LUX, also called DIALux is increasingly becoming popular in the
modern world. You can now plan in DIALux with great luminaires
from the world’s most renowned manufacturers and enjoy ultimate
freedom in the lighting design process.
Bene ts of LUX
Featuring professional light planning, LUX is extremely simple and
effective. It utilizes the latest luminaire data and state-of-the-art
software that’s always available for free. The colored light scenes with
light emitting diodes (LED) are energy ef cient and guarantee
excellent illumination for all your buildings including outdoor spaces.
Recommended LUX Levels
The level of lighting in the outdoor is approximated to be 10,000 lux,
albeit on a normal, clear day. However, for a building, especially in the
areas that are closer to windows, the LUX levels may possibly be
reduced to 1,000 lux. On the other hand, the middle area may register
a 25 – 50 lux. Consequently, you may need additional lighting
equipment to compensate for these low levels. For precision &
detailed works, the level of light may range between 1500 to 2000
lux.
In homes- The recommended illumination levels for homes is often
150 lux. The living and dining rooms may work pretty well with about
25 to 50 lux.

3. Supermarkets- Working spaces like supermarkets and mechanical
rooms require light levels of about 750 lux.
In of ces- The normal workstation requires 500 LUX while the ADP
area and conference rooms require 500 LUX and 300LUX
respectively. The auditorium requires 150-200 LUX while the training
room and internal corridors should be supplied with 500 LUX and
200 LUX respectively.
The table below represents the light levels for different workspaces.
Activity Illumination
(Lux,
lumen/m )
Public areas featuring dark
surroundings
recommended
20-50
Warehouses, theaters,
homes, archives
150
Simple orientation meant
for short visits
50-100
Working areas involving
occasional visual tasks
100-150
Easy classes 250
Showrooms, normal of ce 500
2

4. work, a study library, PC
works
Detailed drawing and
mechanical work, operation
theaters
1,000
Supermarkets, of ce
landscapes
750
Performance of prolonged
& exacting visual tasks
5000-
10000
Performance of extremely
special visual activities of
very low contrast & small
size
10000-
20000
Factors Affecting the Effectiveness of
Illumination
The effectiveness of illumination is usually affected by several factors,
including light quantity & quality, contrast, amount of icker,
shadows, and intensity of glare. To optimize illumination in security,
emergency, and safety situations, consider adjusting each factor
differently. Lighting standards also play an important role in the

5. design, installation, durability, and ef cient distribution of
illumination.
Measuring and stimulating Light Level – Illuminance
Illuminance is measured in foot candles (ftcd, fc, fcd) or lux (in the
metric SI system). A foot candle is actually one lumen of light density
per square foot; one lux is one lumen per square meter.
• 1 lux = 1 lumen / sq. meter = 0.0001 phot = 0.0929 foot candle
(ftcd, fcd)
• 1 phot = 1 lumen / sq. centimeter = 10000 lumens / sq. meter =
10000 lux
• 1 foot candle (ftcd, fcd) = 1 lumen / sq. ft. = 10.752 lux
Calculating Illumination
Illumination is calculated using the formula = Ll Cu LLF / Al (1). In this
formula, I denotes illumination (measured in lux, i.e. lumen per m2), Ll
represents lumens/ lamp (i.e. lumen), Cu is the coef cient of
utilization, while LLF is light loss factor and Al is the area/ lamp
(measured in m2).
Light Planning: The Steps
Light planning is a ve-step process. The actual process involves:
Planning objective analysis
Planning conditions analyses
Overall planning
Detailed planning
Documentation
Understanding Glare
Glare can be categorized into two groups: discomfort and disability
glare. The level of discomfort glare can be measured by determining
the glare index in accordance to the UGR method. This is often
graded on a scale, which ranges between 13 and 28 where the greater
the glare index the greater the degree of glare. The smallest variation
in the glare index designating a signi cant difference is three.

6. Re ections from re ective glare or materials can usually be avoided
by adopting the following strategies:
· Choosing convenient luminaire positioning
· Using materials for all re ective surfaces
· Selecting xture with effective screening and low luminous
intensity
· Picking out luminaires with a bigger surface area
· Choosing light colors for your ceilings and walls
Balance is key
A well-balanced luminance is essential to boost visual clarity,
effectiveness of the ocular functions of the eye, and contrast
sensitivity. You should always avoid high luminance which can cause
glare, intense luminance contrasts that may cause visual tiredness,
and low luminance contrasts, which trigger a staid atmosphere that
doesn’t stimulate.
PREVIOUS POST
New Ideas on Lighting Design
NEXT POST
Color Characteristics of LEDs
LED LUX LUXLEVELS RECOMMENDED LUXLEVELS

7. LEAVE A REPLY
Your email address will not be published. Required elds are marked *
Name *
Email *
Website
Comment
You may usetheseHTML tagsand attributes: <a href="" title=""> <abbr
title=""> <acronym title=""> <b> <blockquote cite=""> <cite>
<code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>
POST COMMENT
Search …
RECENT POSTS
An update on the Light Bulb Ban
An Introduction to DMX Lighting Control
Why Light Output Should Be Measured In Lumens & Not Watts
IP Ratings Explained

8. Architectural Lighting for Buildings
RECENT COMMENTS
saving on The 2D Compact and 2 Pin 4 Pin technical information
saving on How to calculate the LUX level in a Room
saving on LED Ceiling Lights: They Will Rede ne Your Living Room
saving on The 2D Compact and 2 Pin 4 Pin technical information
saving on How to calculate the LUX level in a Room
ARCHIVES
July 2018
May 2018
April 2018
March 2018
February 2018
August 2017
July 2017
June 2017
May 2017
February 2017
January 2017
December 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
November 2015

9. September 2015
August 2015
July 2015
June 2015
March 2015
October 2014
September 2014
June 2014
April 2014
December 2012
September 2012
July 2012
April 2012
February 2012
January 2012
December 2011
October 2011
September 2011
August 2011
July 2011
May 2011
February 2011
January 2011
October 2010
September 2010
August 2010
July 2010
CATEGORIES

10. Desktop Version
:: Traditional Lighting :: Eco Schools :: The Environment :: Lighting Design
Copyright © 2018Saving Light Bulbs. Powered by Towers ITProfessional Services Ltd
YourIP Address is: 169.54.6.221
Light Bulb General Information
Lighting Design
Technologies
The Environment
Uncategorised
Uncategorized
META
Log in
Entries RSS
Comments RSS
WordPress.org
Proudly powered by WordPress