The above Ad will no longer appear after you Sign Up for Free!

Conventional Fixtures Beam Spread for PAR Units

Discussion in 'Lighting and Electrics' started by w8tah, Nov 16, 2008.

  1. w8tah

    w8tah Member

    Messages:
    2
    Likes Received:
    0
    HI Folks:

    Working on our Christmas program. This year my worship leader has asked me to do a couple different things, and so i need a bit of help.

    I am wondering what the beam angles are for PAR 64 bulbs WFL, MFL, NSP and SP (i think i have those classifications right) Ive only ever used WFL and MFL bulbs. If someone can either point me to the appropriate reference or shoot me the numbers i would really appreciate it.

    TIM
    Lighting Designer
    First Baptist Church, Medina Ohio
     
  2. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

    Messages:
    4,447
    Likes Received:
    2,848
    Location:
    Las Vegas, NV, USA
    Buy an iPhone or iPod Touch. Download LIGHT CALC from the iTunes Apps store for $4.99.

    OR

    Download this Excel worksheet from my website: Conventional_Photometrics.xls.

    To answer your question directly:
    BEAM ANGLE
    1Kw PAR64 VNSP- 6° x 12°
    1Kw PAR64 NSP- 7° x 14°
    1Kw PAR64 MFL- 12° x 24°
    1Kw PAR64 WFL- 24° x 48°

    FIELD ANGLE
    1Kw PAR64 VNSP- 10° x 24°
    1Kw PAR64 NSP- 14° x 26°
    1Kw PAR64 MFL- 21° x 44°
    1Kw PAR64 WFL- 45° x 71°

    For photometric formulas, see this Collaborative Article: http://www.controlbooth.com/forums/collaborative-articles/7664-mathematical-formulas-lighting.html.
     
    Last edited: Nov 16, 2008

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice