Acebeam        
Results 1 to 4 of 4

Thread: Custom Lens Designer Required (StVZO, Cree XP-L)

  1. #1

    Default Custom Lens Designer Required (StVZO, Cree XP-L)

    Hi,

    I write on behalf of a small company here in the UK. I haven't mentioned the name as it could give away our future product portfolio. We have a requirement for a lens/collimator design to meet the following specification, and being this is a niche area we thought it best to try for a specialist with expertise in the field.

    1. Accepts a single Cree XP-L 4.8mm^2 emitter.
    2. StVZO compliant (soft cut-off etc). These requirements can be provided.
    3. Efficiency and beam take precedence over size. We acknowledge the XP-L will make it larger - and that's not a problem.

    We will listen to all recommendations. Although StVZO has requirements there's still room for some manoeuvre and here the designer is free to use best judgement.

    A contract will be drawn up between both parties detailing specification, expectations and payment terms. The lens will undergo StVZO certification, which has a cost implication, so the designer will have to be competent and confident!.

    It's probably best if you can post questions here and discuss quotation/financials by PM.

    Thanks!

    Alex
    Last edited by Alaric Darconville; 01-14-2020 at 08:42 AM.

  2. #2
    Moderator Alaric Darconville's Avatar
    Join Date
    Sep 2001
    Location
    Stillwater, America
    Posts
    5,003

    Default Re: Custom Lens Designer Required (StVZO, Cree XP-L)

    Just a note: StVZO, (short for Straßenverkehrszulassungsordnung) doesn't work on a self-certification basis; StVZO uses type approval (just like automotive lighting in UNECE signatories).

  3. #3
    Flashaholic Marcturus's Avatar
    Join Date
    Sep 2009
    Location
    230V~
    Posts
    335

    Default Re: Custom Lens Designer Required (StVZO, Cree XP-L)

    And it's not just the lens, but the whole thing that will undergo testing.

    Moderator edit
    Let's keep all this on the original topic


    - Marcturus edit -
    I do wish you well with your search, original poster! Don't be too afraid of the market barriers mentioned!
    Last edited by Marcturus; 02-08-2020 at 02:40 AM.

  4. #4
    Flashaholic
    Join Date
    Oct 2007
    Location
    Netherlands
    Posts
    113

    Default Re: Custom Lens Designer Required (StVZO, Cree XP-L)

    Quote Originally Posted by skeet2000 View Post
    Hi,

    I write on behalf of a small company here in the UK. I haven't mentioned the name as it could give away our future product portfolio. We have a requirement for a lens/collimator design to meet the following specification, and being this is a niche area we thought it best to try for a specialist with expertise in the field.

    1. Accepts a single Cree XP-L 4.8mm^2 emitter.
    2. StVZO compliant (soft cut-off etc). These requirements can be provided.
    3. Efficiency and beam take precedence over size. We acknowledge the XP-L will make it larger - and that's not a problem.

    We will listen to all recommendations. Although StVZO has requirements there's still room for some manoeuvre and here the designer is free to use best judgement.
    Not just the lens, the entire lamp, but also manual undergoes certification. There are requirements for the manual, housing, mount, wiring if cables are external, resistance of the lens to certain chemicals, status display for battery powered lamps, and of course the beam pattern.

    Edit: As you are in the UK you will also need a EU or EEA based representative. Companies outside the EEA are not allowed to hold an StVZO approval and the UK is no longer in the EU since Brexit nor is it part of the EEA. As to whether the UK will be/could be/want to be part of the EEA: It is unlikely to become part of the EEA according to an article I read due to the countries that are in the EEA and how they look at the UK possibly entering that...

    I suppose the beam pattern is actually not a problem in the sense that if you make a fairly sharp cutoff, you're really there. There are quite a few more requirements that are actually unclearly written (and some are wrong) about brightness requirements further down from the cutoff, but I think just about all lamps get through (irrespective of the the reflector's or lens' designers not having realised that the specs for 20+ lux beam pattern are wrong in one place), by virtue of producing enough light...
    Last edited by Alaric Darconville; 02-07-2020 at 08:25 AM. Reason: Paring down overquote

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •