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Lighting Library Frequently Asked Questions


What is the Lighting Library?

Watch this 90-second video to to get an overview of the Lighting Library® contents and features.

How is the Lighting Library organized?

The Lighting Library is divided into five Collections of IES standards: Lighting Science, Lighting Practice, Lighting Applications, Lighting Measurements and Testing, and Roadway and Parking Facilities Lighting. For a condensed bibliography click here. [PDF 24KB]

How do I access the Lighting Library?

Watch this 1-minute video on how to access the Lighting Library.

Puchasing the Lighting Library

What is the best subscription model for me?

Watch this 2-minute video to understand the different subscriptions to know what’s best for you.

How do I purchase the Lighting Library?

Watch this 90-second video to see your purchasing options for the Lighting Library®.

Can I purchase individual standards?

Individual standards can be purchased through the bookstore as downloadable static pdf documents. They will not include any of the interactive features contained in the Lighting Library®.

Is there a trial subscription? 

No. Please contact to answer any questions before you subscribe.

Working within a Standard

How do I navigate within a standard? 

This 2-½ minute video provides you with the overview of how you navigate between different areas of the Lighting Library®.

How can I make and find annotations in the standards?

Watch this 2-minute video to see how you can make and find your own personal annotations in the Lighting Library®.

How can I track a standard so I'm informed when it gets updated?

Watch this 2-minute video to see how you can track updates for standards or specific sections of standards in the Lighting Library®.

What is the Reference Retriever and how does it work?

The Reference Retriever gives you a lot of information about the references within the Lighitng Library® standards, including how to access the original documents. Watch this 2-minute video to learn more. For the User Guide, click here.

Can I download a standard from the Library to read offline? 

Yes, by clicking the download button you can download an encrypted and watermarked standard for viewing offline or printing. However, your license agreement prohibits you from distributing this copy without IES permission.

Working with the Illuminance Tables

What is the IES Interactive Illuminance Selector?

It is a search tool found in the Lighting Library® menu that allows you to quickly and easily find the Recommended Maintained Illuminance Target values for all of the IES standards. This 1-minute video gives you an overview, but for more details go here.

What information is in the Interactive Illuminance Selector?

The Illuminance tables are streamlined for ease of access and readability. This 2-minute video covers the basics of this powerful tool.

How do I find light levels for tasks and applications?

This 2-minute video shows you the different methods for finding the light levels you need for tasks and applications using search, browse and checkbox techniques.

How do I save searches in the Interactive Illuminance Selector?

The Interactive Illuminance Selector can save the illuminance recommendations you need into project folders for referencing later, and there is no limit to the number of searches or projects you create under your account. Find out how in this 3-minute video.

How do I print searches and projects in the Interactive Illuminance Selector?

This 90 second video shows you how to print out the illuminance recommendations from single searches to entire projects.


When I click the Download button within a document, nothing happens.

As soon as you click that button within a document, it downloads; look for it in another screen or in your web downloads.

Whom to Contact

What is the IES Interactive Illuminance Selector?

There are a lot of resources on our website shown in this 90-second video, and you can always write to if you can’t find the answers you are looking for.

Whom do I contact if I want to learn more about the Sustaining Membership benefits associated with accessing the Lighting Library?

Please send your message to our membership department at