Funny UEMIS experience

[wrybosome]

Exactly wry, I'v done a bit of mineral identification using petrographic microscopes with crossed polars. But I don't think OLED's emit polarised light. Maybe the glass cover has a polarised layer.

That sounds reasonable to me. I only enough physics and engineering to hang my self with.

 

[lamont]

you should be able to rotate the OLED and watch the screen appear and disappear as the polarization goes into an out of alignment with the sunglasses.

i believe the strength of the signal through the sunglasses should be A' = A cos( theta ), where theta is the angular difference between the polarization of the sunglasses and the OLED in radians. at theta = +/- pi/2 you get zero.

 

[Kern]

Well, silly me. It's just struck me that my DC screen may be polarised in the same plane as my sunnies with my head straight & the DC is normally oriented. So I just got up, walked across the room & rotated it 90^o. Yep, the screen display just disappeared.

So, just for interest. Is the OLED emitting polarised light, or is there a polarised layer in the screen?

 

[BB1]

This all got to technical for me - it works and I'm happy!