research
 Patents
 Books
 Literature
 Articles
 Timeline
 Auction Archive

about
 About this site
 Wanted to buy

bulb gallery

Incandescent:
C
carbon
WD
drawn tungsten
WC
coiled tungsten
WM
mini tungsten
WS
pressed tung.
FG
figural bulbs
XL
christmas
XS
christmas sets
T
tantalum

Discharge:
NE
neon lamps
AR
argon lamps
XE
xenon lamps
MA
mercury
MC
fluorescent
MS
special mercury

Hardware:
F
fuses
FX
fixtures
PF
plugs & fittings
SA
sockets
SW
switches

tube gallery

 X-ray
 Geissler
 Crookes
 Radio
 Box art

museum pics

 Dr. Hugh Hicks
 
Fort Myers, FL.
 S.Slabyhoudek

links

 Related links
 Submit a link

 

Author Topic: Strange Philips bulb - what was it used for???  (Read 14268 times)

Offline Tim

  • Administrator
  • Hero Member
  • *****
  • Posts: 831
    • http://www.bulbcollector.com
Strange Philips bulb - what was it used for???
« on: June 19, 2000, 07:55:00 pm »
Looking for more info on this strange one. It's made by Philips and coated silver except for a flat spot where the filament is visible. I'm guessing some kind of spot or projector lamp?
 

------------------
-Tim

Offline Bob Masters

  • Hero Member
  • ****
  • Posts: 151
Strange Philips bulb - what was it used for???
« Reply #1 on: June 20, 2000, 12:36:00 pm »
I'd say you can't be far off on that one Tim.
That bulb is definitely for something with a closely controlled light beam. But......that's only my guess!

Offline Dave

  • Jr. Member
  • **
  • Posts: 30
Strange Philips bulb - what was it used for???
« Reply #2 on: June 20, 2000, 04:16:00 pm »
I think this is a specially designed theatre/stage/studio light bulb. I believe Philips still makes this one, but have not checked my current lamp catalog so I can't be sure. Still, this is a neat and interesting lamp.

DMD

Offline Scott

  • Sr. Member
  • ***
  • Posts: 84
Strange Philips bulb - what was it used for???
« Reply #3 on: June 21, 2000, 09:01:00 pm »
The base looks exactly like the base of the bulb in my old 8mm movie projector-though the bulb looks different itself. I'm guessing some sort of projector bulb.

Offline James

  • Hero Member
  • ****
  • Posts: 169
    • www.lamptech.co.uk
Strange Philips bulb - what was it used for???
« Reply #4 on: June 21, 2000, 09:42:00 pm »
That 8V 50W lamp is designed for an 8mm home movie projector and was very popular in Europe at one time.  It is better known as a CXR or A1/17 bulb, or Philips type 13113C/04.  It is probably the most optically advanced bulb that has ever been made, becuse its rear ellipsoidal reflector and hemispherical front mirror produces a very narrow beam with almost no light loss.  The chimney on the top ensures that the bulb doesn't blacken as it ages becuase nearly all the evaporated tungsten rises upwards and is deposited here.

The lamp is still available from Philips in Europe but they don't actually make it themselves any more.  The last company making these is Fuji lampworks in Japan and they supply it to GE, Philips and Sylvania.  Your lamp looks like it would have been made by Philips Holland or Belgium around 1970.

Hope this helps!

Offline Tim

  • Administrator
  • Hero Member
  • *****
  • Posts: 831
    • http://www.bulbcollector.com
Strange Philips bulb - what was it used for???
« Reply #5 on: June 21, 2000, 10:03:00 pm »
Thanks for all the replies! I forget to mention the complex optics used in this lamp - really wild looking! This one's a keeper!  


------------------
-Tim

[This message has been edited by tim (edited June 21, 2000).]

Offline Bob Masters

  • Hero Member
  • ****
  • Posts: 151
Strange Philips bulb - what was it used for???
« Reply #6 on: June 22, 2000, 08:29:00 pm »
Tim,
That's a great looking lamp for-sure ! How did you stumble across that baby ?

Offline James

  • Hero Member
  • ****
  • Posts: 169
    • www.lamptech.co.uk
Strange Philips bulb - what was it used for???
« Reply #7 on: June 25, 2000, 06:37:00 pm »
If any of you would like one of these bulbs let me know, I have 4 spares which were made by Thorn Lighting in the UK in the 1960's.

Offline Chris W. Millinship

  • Hero Member
  • ****
  • Posts: 384
Strange Philips bulb - what was it used for???
« Reply #8 on: July 26, 2000, 06:14:00 pm »
Hi,
If anyone`s interested....
There`s currently a lot of 3 of these 8v/50w bulbs going through EBAY, made by Toshiba. Not sure that they`re that old but if anyone`s interested, they`re there until August 5th.


http://cgi.ebay.co.uk/aw-cgi/eBayISAPI.dll?ViewItem&item=392848197

-chris

[This message has been edited by Chris Millinship (edited July 26, 2000).]