LED Room Lighting causing fading and bleaching

Lou NOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBERMEMORIAL SUPPORTER

Yes, I know, that's not supposed to happen.

I have used some Cree 120W spotlights in various places in the train room. I have noticed that some new Lionel boxes that are traditional orange had faded to a salmon color. An American Flyer silver bay window caboose had the red lettering fade to a pink shade.

Having done biomedical lasers and optics I am familiar with the fact that white LEDs are composed of a white phosphor stimulated by a blue or UV LED. So is there UV leakage thru the phosphor??? I no longer have access to the instrumentation I used to use to test this

Has anyone else had this experience?

Lou N

7/31/214:58 PM

Original Post

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