When lit, the VU1 lamps show this unusual sort of shadow mask projected onto the phosphor mask. It certainly is in the electron path as its size and shape doesn't really finalize until the lamp has settled. This may be for return current or it may act as a diffuser or beam director, functioning similarly to the way a shadow mask in a color TV may behave. While this looks like it's a pattern illuminated from behind, it isn't. This woven pattern is not visible when the lamp is off, and is not part of the phosphor. The slight RGB stippling you can see is NOT from the camera, but is visible on the bulb itself when lit, due to different phosphors used (Closeup in another pic in my gallery).
|Filament/Radiator Type:||CRT / Cathode Ray|
|Color Rendering Index:||90|
|Download:||Download this File|
|File Size:||2705 KB|
|Date added:||Apr 02, 2015|
|Dimensions:||1595 x 1140 pixels|
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