Dear Mr. Sawatzky,
We have found that the design of the assembly, usually,
should be controlled by the "primary" protocol addresses desired. e.g.
If the primary use is to be deep-seated, localized insults......then the
closer-the-better, as far as locating the individual LEDs. If the
"primary" protocols are to be for addressing more generalized (larger
and usually shallower) areas........then a wider spacing would recommend
itself. Personally, I favor the closest spacing reasonably
constructable-----as most of the more demanding insults (of my
experience) are of the acute, high pain intensity variety. This leads
me to opt for high power and concentrated intensity. My personal
feelings in the matter are not shared by a majority of the staff.
For general purpose useages, logic would suggest a
compromise and I have a preference in this matter-----also.
That is, the arrangement based upon 5/8" square (or close to that) grids
and placing the LEDs in an alternately staggered pattern similar to a
checkerboard-----this has yielded the most successful general purpose
units we have constructed.....to date.
Sincerely,
Brooks Bradley.
Dave Sawatzky wrote:
> In the May discussions on LED Phototherapy Light wands, Ivan Anderson
> say"I have single red LED's that produce 6,000 mcd." Where can I get
> 6,000 mcd LED's? I have searched the internet and found some 9,000
> mcd LEDs but they were only 630 nm. Can anyone tell me if that
> wavelength is less effective for treatment? I just received some 4.000
> mcd LEDs from BGMicro, but on my tests they have light output that is
> approx. 20 % lower than the 3500 mcd I have from a different supplier.
> I also tried a few of their clusters that were discussed here. I found
> that most of the individual LEDs had very poor light output. If I
> remember correct, there were only 5 out of 27 of the red ones that had
> reasonable brightness left in them. I have built 2 light wands and the
> tests have been very encouraging. One man has a bad rotator cop in his
> shoulder, and the light has substantially reduced his pain. The second
> unit is being tested by a lady with a sprained ankle. She is reporting
> that her swelling went down after the first treatment with a reduction
> in pain. I also have a question for Brooks Bradley.Ivan posted the
> construction article in May that shows a grid with 5/8" squares with
> LEDs in alternate points, which gives a 1 1/4" spacing between units.
> How important is spacing? I built one before I had those plans and
> spaced the leds touching each other. This gives a greater
> concentration of light in a small area. Have you done some research on
> effectiveness as it relates to spacing.I have very much appreciated
> your sharing on this site Brooks, and look forward to learning more
> from your well of experience. Thank you Dave Sawayzky
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