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About
Our Organization
About The IES
Diversity & Inclusion
Society Awards
Administration
IES Staff
IES Board
IES Committees
Information
Newsroom
Annual Report
Resources
Membership
Membership
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Light for Life® Virtual Symposium: Commissioning
IES26 The Lighting Conference
SALC 2026
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Light for Life® Virtual Symposium Series
Light + Intelligent Building 2027
Illumination Awards & Gala
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About IES Research
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Browse Library of Lighting Standards
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Join a Technical Committee
Information
Standards Newsletter
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Dirk Zylstra
Dirk Zylstra is vice president design with Luminaires Group.
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