What Is This Plastic Part For? (inside light bulb)


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Old 05-09-20, 09:24 AM
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What Is This Plastic Part For? (inside light bulb)

Just curious. Can anyone come up with a socially redeeming value for this (once) circular white plastic part that was inside this LED lamp?

I didn't notice it until one day I saw this circular shadow on the bulb. It was from something rattling around inside.

I cut open the (plastic) bulb and extracted the plastic part which was brittle and broke into fragments. From its shape I judged that it was mounted more or less at the red oval I drew, concentric with but spaced about 3/4 inch from the LED assembly. (The yellow dots are the light emitting elements.)

(The lamp still works.)
 
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Old 05-09-20, 09:28 AM
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Most likely a support or deflector.
 
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Old 05-09-20, 09:32 AM
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How do I get rid of attachments made in error?

The plastic part in question does not appear to lend support but it was held in place by the LED assembly via two screws in the latter.
 
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Old 05-09-20, 09:35 AM
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I suspect it is there to diffuse the light better. (Photometrics) There is a lot of engineering and design that goes into building a lamp or light fixture
 
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Old 05-09-20, 09:41 AM
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From the position I believe the plastic part occupied it appears to shadow, absorb, and waste a lot of the lumens that the lamp produces.

The frosted bulb also appears to absorb a lot of light output but that is another program.
 
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Old 05-09-20, 09:44 AM
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The IT guys are in the process of changing the attachment system. After that it could be deleted.
 
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Old 05-09-20, 10:00 AM
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from the position I believe the plastic part occupied it appears to shadow, absorb, and waste a lot of the lumens that the lamp produces.
That may be true but it was likely designed to help defuse the light to make it more pleasing and non-directional. Not many people like lights with exposed LEDs as it is quite harsh.
 
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Old 05-10-20, 06:11 AM
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Read the package the bulb came in or check the website for the manufacturer and model number.
 
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Old 05-10-20, 06:47 AM
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Hi, send a pic of that to bulb mfg. and ask the question.
Geo
 
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Old 05-11-20, 10:21 AM
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I suspect it is there to diffuse the light better
Agreed. LEDs (the diode components themselves) have a rather direct output (viewing angle). Without diffusion or reflectors, most are about 20 degrees. So a lot of engineering goes on to make them act like incandescent lamps like we are used to. Unfortunately, with every diffusion or reflection, some of the light is inherently lost. It's a tradeoff of using as much of the illumination as possible while making it function appropriately.

Even the translucent bulb cover loses a significant amount of the light output, for the benefit of a softer, more spread light.
 
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Old 05-11-20, 11:56 AM
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Hi, send a pic of that to bulb mfg. and ask the question.
And their answer would be: Internal parts are not serviceable, warranty is voided and recommend that you discard the bulb immediately,
 
 

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