Please help me identify & advise in some areas

[balibm]

hello there,

 

if you dont mind me grabbing your time a bit I would like your help on identifying the following type of lighting:

 

Couple of images of the light

 

After not finding anything on the net about this particular Concord Lumiance item I could only work out that it must be a profile spotlight / gobo projector. I am really not sure which one is the correct terminology here, correct me if I am mislead.

 

I would like to - however awkward the fiddling with it - use it for photography.

 

My questions are:

 

1., as this was bought from a shop that had this on display for long years I would like to ask you if anything obvious was missing (apart from the cord :) ) [there was no manual, no instructions supplied to it]

 

2., can coloured gels be used with it? if so, must they be placed in the gate where gobos would sit and if so do they need to be made from glass?

 

3., on the 7th picture there are some pre-cut 'annulus' shape made of black paper. One of them is plain the other one can be slipped in to make it somehow hollow. Could you please tell what those are for?

 

4., how ancient is this thing, when were these in fashion? (considering that Concord is already merged with other companies and that the 'made in u.k.' sticker is somewhat obsolete, also googling it heavily did not help a bit)

 

sorry for the lame questions but I feel the need to know these

 

thanks much

balazs

[paulears]

It's a pretty neat profile - or at least, that's what we call it. They were quite common in retail as apart from doing the job, they look quite interesting - and the open design keeps things cool. Colours are no problem - but the optical system means the gate is VERY hot, so gels there will melt very quickly. The focal point is where the gobos fit. It's quite possible that the gobos it can take are a standard size - difficult to tell from the images - but quite likely, so you can project all sorts of patterns. The 'doughnuts' placed on the front elements will sharpen the image up, but at the expense of brightness.

 

It looks complete - so all you need to do is experiment. You can experiment with home made gobos if you like - the thick aluminium chinese containers work quite well with a sharp craft knife.

 

The two lenses control beam width and edge softness - so with something in the gate, or the shutters in you can have hard or soft edges. Power it up and have a fiddle.

 

I seem to remember something very similar to these in the late 80s - other than that guess, can't help date wise.

[balibm]

It's a pretty neat profile - or at least, that's what we call it. They were quite common in retail as apart from doing the job, they look quite interesting - and the open design keeps things cool. Colours are no problem - but the optical system means the gate is VERY hot, so gels there will melt very quickly. The focal point is where the gobos fit. It's quite possible that the gobos it can take are a standard size - difficult to tell from the images - but quite likely, so you can project all sorts of patterns. The 'doughnuts' placed on the front elements will sharpen the image up, but at the expense of brightness.

 

It looks complete - so all you need to do is experiment. You can experiment with home made gobos if you like - the thick aluminium chinese containers work quite well with a sharp craft knife.

 

The two lenses control beam width and edge softness - so with something in the gate, or the shutters in you can have hard or soft edges. Power it up and have a fiddle.

 

I seem to remember something very similar to these in the late 80s - other than that guess, can't help date wise.

 

Thank you for the wealth of information there Paul, I'll try and experiment with the alu containers, that shall be fun.

 

About the coloured gels and the thermal stress they must take: can the gate be used to hold readily available pieces of colourized glass (tempered)? The ones that can be found in glass shops. Would that prove to be just as effective as dichroic solid colour gobos? If so is there a minimum thickness for the glass to be considered or I'd need to stand there with a fire extinguisher to see for myself?

 

I'd like to go on the diy route if that is feasible here at all.

 

Thank you for your time.

[Jamtastic3]

If you were to put a gel into this light and experiment with colour, then I'd be putting it as far away from the lamp source as possible.

So you could cut a piece of gel to fit in the outside of the furthest away lens for example, or stick it on the front of the aperture