Re: Ott-Lite
Re: Ott-Lite
- Subject: Re: Ott-Lite
- From: "Bertho Boman" <email@hidden>
- Date: Tue, 17 Feb 2004 10:02:34 -0500
I bought two Solux bulbs and built an adjustable regulated DC power supply to
run them. I can set the voltage accurately to keep a stable and uniform color
temperature. Once the distance is about 0.5 m from the lamps, the illumination
looks uniform. It is a nice reference to have so I do not have to worry about
peaks and valleys in a fluorescent light.
Drawbacks: Since they are incandescent, they get hot and the light area is
smaller than a typical viewing booth. The power supply does not have to be as
fancy as I built but it is a little tricky if it is an electronic one, since the
startup current is very high of an incandescent bulb and it will often overload
the supply.
You are also right about Ott-Lite. They are very good at marketing.
Interestingly, they refused to give out the patent numbers although the box is
marked "patented". They claimed that it was confidential. I got curios and got
copies of them. Their patents are not really related to color accuracy, it has
to do with the mechanical design of the end caps acting as "radiation shields".
Yes, I have one of their lamps too, OTL-13TCG, and it works pretty well but I do
not trust it like the Solux.
Bertho
----- Original Message -----
From: "Roger Breton" <email@hidden>
>
>
Yup, the price is certainly the holding factor. But come to think if it I
>
never saw it demonstrated at Seybold or any other shows I attended where GMB
>
had a booth. Incidently, I was given the URL for a company in Florida that
>
makes the bulbs for GMB where it's possible to order just the bulb alone and
>
thus build one oneself from scratch? Maybe an economical solution. Which is
>
probably the route I would take just to get my feet wet in this because, if
>
I go by my Solux experience, the beam color temperature is not uniform from
>
the center out onward? So, I would how that the Sol-Source has a solution
>
for this because I'd hate to pay $400 to find out that at the center of the
>
beam the light is 5000K but as I am gradually moving away from the center it
>
decreases in color temperature :(
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| | >Re: Ott-Lite (From: Roger Breton <email@hidden>) |