Laser strength, 5mw Vs 20, 50, 80mw

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Laser strength, 5mw Vs 20, 50, 80mw

Postby Nick Balgowan » Wed Oct 18, 2006 12:13 pm

This should be fairly basis to work out. Laser tools such as laser levels, laser pointer pens and childrens laser toys use 1~5mW laser modules. It seems a variety of our US based competitors seem to be suggesting the following;

1) Stronger lasers cause hair to FALL OUT (e.g. 20-80mW laser modules)
2) Three is no point having stronger lasers than 5mW
3) Laser wavelength and NOT strength influences penetration depth

All three comments are false, misleading and unsubstantiated. European laser equipment manufacturers have been using lasers considerably stronger than 5mW for many years with no adverse affects. If a product designed to restore hair caused hair loss, it would be very evidence very quickly.

It is clear from reading any physics book or research paper regarding clinical application of laser technology that laser strength influences the penetration of laser energy. This can be proven by firing a laser through a jellatenous substance, where lasers leave a noticable impressive than can then be measured accurately.

Essentially, laser manufacturers in the USA are bound by LAW to a maximum 5mW design. If their own arguments were correct that laser wavelength and NOT laser power influenced pentration depths, then why even use 5mW laser modules and not 0.5 or 1.0mW laser modules? Why settle for the MAXIMUM available to them by local US regulations? There is no evidence to support this comment what so ever.

As US regulations limit laser output of 5mW, why would any US supplier even be testing laser modules over 5mW? If these test do exist, they have yet to be produced, or any evidence or supporting documentation for that matter. We have asked several US based supplier to substantiate any comment that greater than 5mW lasers either cause hair loss or are less effective - with no responce. We have substantial information that has formed part of particular pending medical approvals that higher intensity and stronger lasers give faster and better results.

Aculas lsaer modules are available in 20, 50 and 80mw and the energy is digitally scattered over a very short distance. So at a long distance (e.g. 5-10") the energy divergence is relatively wide. This means we can offer much stronger treatment at a close distance, while offering much safer operation as the energy concentration is negligible at a distance where accidental exposure to the eyes could possibly occur. Our design allows us to use much stronger lasers while still maintaining and abiding by relevent laser safety regulations.

Calculations regarding complete laser exposure of the scalp show that using 5x primitive SPOT FOCUSED 5mW laser modules would take approximately 400-600 minutes or approximately 6-10 HOURS per DAY to achieve scientifically proven SATURATED exposure levels to promote healthy hair restoration. Although with home treatment, more frequent shorter treatments seem just as effective. Applying the same principles to high powered laser modules results in around 100 minutes per day. Clearly stronger laser energy PROPERLY APPLIED AND SCATTERED OVER A RESONABLE AREA, provides signifigantly better treatment, faster results and more even coverage.
Nick Balgowan.
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http://www.dermaray.com
http://www.beatpsoriasis.com
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Postby narmi91 » Mon Dec 04, 2006 7:23 am

For the US --> As power rises, the laser beam gets brighter and that's good. But as the beam gets brighter it also contains more energy and can cause harm to eyesight. The beam can even burn if brought to too high a level. It is illegal to modify a Class IIIa laser to output more than 5mw. Anything stronger becomes a Class IIIb device and requires a safety interlock and a mechanical shutter. It is also illegal to use a Class IIIb laser in a public place without special permission.

Given that your laster is more than 5mW, how can you sell it in the US? do you have or need FDA approval?
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laser power

Postby Nick Balgowan » Mon Dec 04, 2006 7:40 am

narmi91 wrote:For the US --> As power rises, the laser beam gets brighter and that's good. But as the beam gets brighter it also contains more energy and can cause harm to eyesight. The beam can even burn if brought to too high a level. It is illegal to modify a Class IIIa laser to output more than 5mw. Anything stronger becomes a Class IIIb device and requires a safety interlock and a mechanical shutter. It is also illegal to use a Class IIIb laser in a public place without special permission.

Given that your laster is more than 5mW, how can you sell it in the US? do you have or need FDA approval?


Hello, that is not exactly correct. If that is the case, how come a particular brand sold widely contains a single 25mW? It is because the output area is spread out over a larger area, as it the Aculas unit. However, tt is highly concentrated at about 1-3cm (e.g the target area!) past this distance, the beam divergance is very wide and infact, many times SAFER than a highly focused 5mW. There are a variety of laser devices manufactured outside of the USA, that are signifigantly stronger than 5mW. This may be a domestic requirement in the USA, and US manufacturers may be bound by this, but no manufacturer outside of the USA is bound by US laws.

Please see another post in this category here http://www.beatpsoriasis.com/forum/viewtopic.php?t=142 that explains in detail this exact situation. As you will see from the mathemaics provided, a properly used 20 or even 80mW laser is many times safer than a highly focuses spot 5mW laser. It would also take the best part of a full day to use a laser brush fitted with focuses 5mW lasers to receive proper medical exposure levels. It is ironic that a 5mW laser is so low powered that it needs to be highly focused, that then in turn, becomes dangerous to the eye, even at a great distance, because of the concentration of the beam. Because of the beam focus, it also leads to a very low exposure area - even with many diodes fitted.

You are asking about FDA, to our knowledge NO hand held laser device has FDA approval for hair loss treatment. However, Aculas does have certified CE medical device approval, not just CE electrical safety approval.
Nick Balgowan.
----------------------------------------
http://www.tcgindustrial.com.au
http://www.dermaray.com
http://www.beatpsoriasis.com
----------------------------------------
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