Gallery of Lights

The Site => General discussion => Topic started by: MercuryVapor175 on April 30, 2012, 04:11:08 PM

Title: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: MercuryVapor175 on April 30, 2012, 04:11:08 PM

Do you prefer clear vs. coated :MV: light bulbs?

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: Mike on April 30, 2012, 06:30:24 PM

I like cleartop mercs for collection purposes because part is coated and part is clear. i'd prefer coated lamps for lighting an area though.

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: mercuryvaporrocks on May 01, 2012, 05:06:33 PM

I like coated mercury vapor lamps better.

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: rjluna2 on May 01, 2012, 05:34:36 PM

I like the clear :MV: bulbs because I like to see the arc design ;D

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: MercuryVapor175 on May 02, 2012, 02:35:13 PM

I personally like clear, for 2 reasons.
First, I like the bare MV emission spectrum.
Second, I love the startup and discharge.

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: Silverliner14B on May 04, 2012, 03:25:13 PM

Clear mercs! Nothing beats a blvd bathed by miles of sparking blue/green lights!  Plus fixture efficiency and light distribution is better with clear mercs.

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: Mike on May 04, 2012, 04:24:05 PM

@ Dave; i thought /DX lamps were more efficient?

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: MercuryVapor175 on May 04, 2012, 09:39:57 PM

Clear is more efficient in the long run, as the lumens don't drop out as fast. That is because as the lamp ages, the UV emissions reduce the most, so then the phosphor (DX coating) effectively becomes a light blocker. However, when the lamps are new, Coated can be more efficient; however the light control is worse compared to the clear equivalent, so it all depends on the application of the lamp as well as its running time/age.

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: joe_347V on May 04, 2012, 11:44:41 PM

Well, for me clear for roadway lighting, and landscape lighting, coated for sign lighting, high bays, and other outdoor lights.

And for my collection well, all of them! :P

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: Jace the Gull on May 18, 2012, 01:42:41 PM

I used to really enjoy traveling in New Jersey! Why....it was fun seeing the greenish color in Cobraheads which held clear mercury lamps. That was under PSE&G!

Title: Re: What do you prefer: Clear or Coated (Mercury Vapor) Lamps?
Post by: bryantm3 on July 02, 2012, 03:25:36 AM

clear, but with a light refractor.