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quartz halogen, plain halogen?

D

Dirty Harry

Jan 1, 1970
0
Can someone tell me if there is a difference between the halogen bulbs and
on the ones labeled quartz halogen? I'm trying to build myself some studio
(ghetto studio) lights with 2X500W halogen lights but if I can squeeze more
light out with differernt bulbs that would be great. This is what I'm
talking about for a light... http://harryphotos.com/500watt1.jpg Thanks to
anyone who can help :)
 
D

Dirty Harry

Jan 1, 1970
0
Dirty Harry said:
Can someone tell me if there is a difference between the halogen bulbs and
on the ones labeled quartz halogen? I'm trying to build myself some studio
(ghetto studio) lights with 2X500W halogen lights but if I can squeeze more
light out with differernt bulbs that would be great. This is what I'm
talking about for a light... http://harryphotos.com/500watt1.jpg Thanks to
anyone who can help :)


Or are all halogens quartz?
 
V

Victor Roberts

Jan 1, 1970
0
Can someone tell me if there is a difference between the halogen bulbs and
on the ones labeled quartz halogen? I'm trying to build myself some studio
(ghetto studio) lights with 2X500W halogen lights but if I can squeeze more
light out with differernt bulbs that would be great. This is what I'm
talking about for a light... http://harryphotos.com/500watt1.jpg Thanks to
anyone who can help :)

The answer is yes ... and ... no.

Most halogen incandescent lamps use quartz filament tubes but some are
called halogen and some are called quartz halogen. But, recently a
special hard glass has begun to be used in some halogen incandescent
lamps.

Why is the filament tube material important to you? It seems you are
interested in visible light.

--
Vic Roberts
http://www.RobertsResearchInc.com
To reply via e-mail:
replace xxx with vdr in the Reply to: address
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This information is provided for educational purposes only.
It may not be used in any publication or posted on any Web
site without written permission.
 
D

Don Klipstein

Jan 1, 1970
0
Can someone tell me if there is a difference between the halogen bulbs and
on the ones labeled quartz halogen? I'm trying to build myself some studio
(ghetto studio) lights with 2X500W halogen lights but if I can squeeze more
light out with differernt bulbs that would be great. This is what I'm
talking about for a light... http://harryphotos.com/500watt1.jpg Thanks to
anyone who can help :)

"Halogen" and "Quartz Halogen" are largely the same thing.

The notable exception is that some halogen bulbs are made not with
quartz but with a tougher-than-usual type of glass, usually "hard glass",
mostly something roughly somewhere between "Pyrex" and quartz (*my
words*). I believe that most halogen bulbs made of "hard glass" rather
than quartz are automotive bulbs, and I believe mainly most "900x" types.
Some, possibly most halogen flashlight bulbs use some kind or another of
glass rather than quartz.

Do not expect much change in light output from choice of bulb material
in a halogen lamp.

- Don Klipstein ([email protected])
 
D

Daniel J. Stern

Jan 1, 1970
0
"Halogen" and "Quartz Halogen" are largely the same thing.

Also "Iodine", "Iodine-Quartz", "Quartz-Iodine" -- all old terms for what
are now known as "halogen" lamps.
I believe that most halogen bulbs made of "hard glass" rather
than quartz are automotive bulbs

Not really true. Philips *per se* is still mostly a quartz shop, though
their non-Philips-branded operations as well as their PRC plant make a lot
of hardglass lamps; Osram's line contains a lot of hardglass lamps. (Of
course, Osram still makes plenty of quartz lamps, too.)
I believe mainly most "900x" types.

Also not really true. Even just confining ourselves to automotive bulbs
[sic], there are many, many hardglass H1, H3, H4, H7, H8, H9, H10, H11,
H12, H13 as well as HIR1 and HIR2.
Do not expect much change in light output from choice of bulb material
in a halogen lamp.

Also not necessarily true. Sure, there are lots of lamp types that cannnot
presently be made with hardglass envelopes due primarily to the
temperatures involved or the service environment (JH has a Philips video
on his site of water hitting a quartz and a hardglass lamp of the same
type), but within the range of lamps that can be made either way, often
one can choose the envelope material by choosing the manufacturer.

DS
 
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