IF I have a lighting fixture with direct light, however, the fixture's glass is translucent / white glass. i.e. I can't see the light source through it but can only see a white lit surface,

Does this still count as direct-only fixture?

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Kera Lagios

High Performance Specialist

EHDD

LEEDuser Basic Member

16 thumbs up

Tue, 06/23/2020 - 01:36

Can you say more about the fixture? Is it decorative? When speaking about "direct light", this includes things like linear fixtures that have an acrylic or polycarbonate lens, but where the light points down, as well as ceiling mounted fixtures with a diffuser around it. It doesn't mean that you have to be able to see the actual LEDs. It would be my thinking, without knowing more about the fixture, that your fixture would still be considered "direct light".

O'Brien360

LEEDuser Basic Member

1 thumbs up

Thu, 07/09/2020 - 20:50

Hi , I have a similar question on Strategy D. Will the fixture with a direct component, can be exempted and need not be accounted under Strategy D, if it has an indirect component such as Pendant mounted Direct/Indirect linear downlight? Or we need to prorate the wattage based on the percentage of up/downlighting?

Karen Joslin

Sustainability Lead

PAE Consulting Engineers

LEEDuser Basic Member

5 thumbs up

Fri, 06/03/2022 - 20:52

Hi Omar - not sure if you ever received clear guidance on your question. In my experience any light energy that is leaving the fixture and coming directly down into a space is definitely considered direct. Even through lenses, etc. The intent is to reduce the "hotspot" appearances when vieing the light fixture to reduce glare and discomfort. Only light directed up and reflected off the ceiling or similar will count as indirect. Hope this helps even at this late date...

sophia123 janie

LEEDuser Basic Member

0 thumbs up

Mon, 06/06/2022 - 12:54

Thanks Karen, also helped me.

Joyce Kelly

Architect - Cx Provider - Building Performance Specialist

GLHN Architects & Engineers

LEEDuser Premium Member

25 thumbs up

Thu, 10/27/2022 - 17:03

We need to provide commercial kitchen lighting for a Catering kitchen that is occasionally regularly occupied. (When they cater events, 6x a year, it's definitely regularly occupied.) Because the Kitchen represents more than 25% of regularly occupied space, does that mean we can't pursue option D for indirect lighting?

Karen Joslin

Sustainability Lead

PAE Consulting Engineers

LEEDuser Basic Member

5 thumbs up

Thu, 10/27/2022 - 19:05

HI Joyce - using the v4 metrics even a lensed light that shines other than upward is considered direct. The goal wa to use 75% reflected lighting for the spaces. However you should check out the v4.1 requirements instead - no more ABCDEF - and the glare control considerations have changed a lot. Always recommend switching this credit out.

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