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Lithonia Lighting 1 by 4 Retrofitted With Bridgelux LED's

Lithonia Lighting 1 by 4 Retrofitted With Bridgelux LED's

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I am building two of these 1 by 4's for down lighting in my simulated office for my Masters project experiment. These LED's are white tunable and range from 3000K to 5000K. These wraparound fixtures will provide downward light toward the desktops and will contain a "sparkle" strip of LED's to create a glare condition.

My experiment is human factors related, and I will have participants fill out surveys regarding how bright they perceive the space to be, how much glare the lights produce, and how comfortable they would be completing office work in each condition.

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Light Information

Light Information

Manufacturer:Lithonia Lighting and Bridgelux
Lamp Type:LED Retrofit 1 by 4 Fluorescent Wraparound
Location:Troy, New York
Voltage:0-10 Volts
Lumen Efficacy:Excellent
Color Temperature:3000K to 5000K
Factory Location:China (Final Assembly in USA)
Fabrication Date:February 2019
Application/Use:Masters Project Office Lighting Experiment

File information

File information

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Album name:CEB1993 / LED Lights
File Size:608 KB
Date added:Mar 02, 2019
Dimensions:1512 x 2016 pixels
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Date Time:2019:03:01 11:29:45
DateTime Original:2019:03:01 11:29:45
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Exposure Time:1/40 sec
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Focal length:3.99 mm
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fluorescent lover 40
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Lights are awesome! :)

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Mar 02, 2019 at 03:13 PM Author: fluorescent lover 40
That's not a troffer, but a wraparound.

-Date decoder of most US lamps 1960-present.

-Collects all types of lights.

I'll save any vintage lamp... dead or alive! Smiley

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Mar 02, 2019 at 03:17 PM Author: CEB1993

That's not a troffer, but a wraparound.

Thanks, I updated the file info. These will be taped off on the sides to prevent too much light from reaching the walls. I will be modifying these wraparounds to produce downward light, and I will be using the LED bars for wall washing, in order to differentiate the lighting conditions.

Philips DuraMax and GE Miser forever!  Classic incandescents are the best incandescents!

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Mike McCann

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Mar 02, 2019 at 07:15 PM Author: streetlight98
Hmm sounds like an interesting experiment. Looking forward to hearing more about it!

To resist is to piss in the wind, anyone who does will end up smelling.

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Mar 03, 2019 at 06:36 PM Author: arcblue
I never cared for the glariness of these kinds of retrofits but since they've become more common, it's good to do a study on glare, visibility & color temperature. This sounds like a very interesting study indeed!

I remember working in an office with 4x32w T8 troffers using prismatic flat lenses. After group relamping to new 4100K lamps (many were burned out or dim), many workers complained about glare & headaches. Maintenance's solution was to relamp a second time with 3500K lamps. That still didn't "help" so they removed two lamps in each fixture. Then the office was too dim.

I told them changing to parabolic lenses like were in the hallway (!) would be a better solution. They didn't care...

I'm lampin...

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Mar 03, 2019 at 08:07 PM Author: sol
Is this an assignment for your lighting design course ? It surely looks interesting, I'd be curious to see the results of the experiment.
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USA (120V 60HZ)

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Mar 04, 2019 at 12:16 AM Author: Alights
Personally if I was going to use LEDs probably use direct wire tubes since these come with cheap ballasts, but some of the LEDs are high lumens like the MRSL series lithonia retrofit kits

Magnetic ballasts and old school electronic only zone!  No T8 instant start

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