him
does anyone know why my light has been green ever since receiving the bulb,
all in all, it has only been on for about 3 hours in total..
will this eventually go?>

any comments are appreciated
ryan

This has been covered a number of times before. The bulbs may take as long as 100hr to reach full brightness and best color. Some bulbs still appear grenn after this and have been declared defective. At least one person found that the cooling air was cooling the bulb to much, redifrect air to cool box rather than lamp and bulb turned to white. So let the bulb burn in longer, if it is still green after 10 hours look at possible over cooling of bulb and if it remains green it could be defective.

ok thanks,
im sure im not overcooling it so i must have to wait longer.......

it was bright white and nice and clear one time i turned it on... the next it was back to green..... strange
anyway
will see

Is the light from the actual lamp green, or is it the projected picture?

The reason that I ask is that I noticed that my projection was quite green after changing my lamp. It was not with the first lamp that I had, but it definitely was with the replacement.

This turned out to be the panel, I have no doubts left of that.

Compare this picture from my 15" panel:


With this one taken from the replacement 17" panel.


The first picture was taken with a custom white balance on the camera, which reduced the green tint. The second was taken with an auto white balance. The second is also running at default brighnes and gamma settings where the first had enhanced gamma and brightness settings.

hi
thanks supra,
however, i dont think its from the panel...
as i dont have one in.. i have read about other peoples bulb being green aswell..


what happened tonight was, i fired up the bulb, it was bright white, then when it warmed up, it goes green (about 1 minute after turning on)

im not sure, but ill be p**d off if its the bulb and its irreversabel
(the bulb is brand new from ll)
im gonna leave it on all night

Well, if there's no panel...

I know that my lamp also had a green tint when it was new. It went away but over a period of weeks.

It was really green for a while there... Like this



You'll be happy to know, though that the current pictures were taken with the same lamp and ballast.

"Looking at the world through chlorophyl colored glasses...."

LOL!

Though I should point out that even when the screen was this green, I didn't have any trouble differentiating the colour pallette by eye. When photographed, the problem looked MUCH worse (As you see here)

I guess it just goes to show that the eye is more adaptable than the camera.

In photographs at this stage, showing a selection of black, white, red, yellow, green, cyan, blue and magenta, the camera was completely unable to distinguish the difference between green and yellow, and only BARELY able to distinguish cyan from either. It primarily showed up as a lighter shade. By eye, the distinction was clear.

But essentially, the news is that the problem DID clear up, once I let the lamp burn for a while, and get good 'n hot.

does anyone actually know why the bulb goes green

this would be appreciated by lots of new comers i think
... freaked me out when i seen it..
and yeah your dead right, in pics ive taken i was surprised how bad it looked.... then again my whole kitchen looks like a green house at the moment... hope the police dont think im growing some herbal remedies in there

Isnt it really bad to start up the bulb when its not properly enclosed? Not that much for the bulb but the person themselves I'm not sure I was just reading the instructions inside the USHIO box, was like it has dangerous UV rays that can inflaminate your eyes, and cause burns to skin :S

Well, I certainly wouldn't spend any time directly exposed to the lamp, but for short periods of testing, not much harm.

Still, a but of SPF30 wouldn't hurt for the truely safety-minded, nor a piar of UV blocking sunglasses

wow, ive been walkign about looking at the bulb on, and walking around with it on for about a week , tonight i noticed i was a bit red or more tanned for this miserable uk weather..

my eyes have been hurting a little and ive felt a bit sick at points..............

uv? dunno weird but i shall take some precautions now.#

another thing, would it help if i leave the bulb on overnight to get rid of the green ness? or does it have to be playin a movie etc

Just running it doesn't mater what the light is shining on, although it would be best to have it in the same orrientation that you plan to use in the projector, i.e. don't burn in vertically and then use as a horizontal. To answer your previous question where does the green come from, the metal halide name comes from the metals that are vapourized and the enery makes them glow like a neon sign, different elements and componds glow with different colours an a mix of material and thus colours is used to make "white" light. So some bulbs are designed for 3000K color temp while others are 10,000K so they mix the metals to get different colors. The green is too much of one material and/or not enough of another, or not getting hot enough/too hot for the metals to glow as designed.

ok great thanks,
so you think this should clear up? what are the chances of it not clearing up do you think
thnx