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Old 07-23-2011, 08:25 AM #1
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Default Looking for 500mw 808nm IR focusable clicky switch

Hi everybody,

I want to buy a 500mw 808nm IR laser. The laser has got to be focusable and with on/off switch (not a temporarily switch).

Any recommendations?

TIA


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Old 08-01-2011, 10:59 PM #2
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Default Re: Looking for 500mw 808nm IR focusable clicky switch

I'd recommend good safety goggles.
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Old 08-06-2011, 08:17 AM #3
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Default Re: Looking for 500mw 808nm IR focusable clicky switch

Quote:
Originally Posted by Bluefan View Post
I'd recommend good safety goggles.
Already got a pair of safety goggles.

Also got this laser from Lazerer.

I have two questions:

1. Is it normal that IR lasers can burn only at close distance, regardless of their power (due to beam characteristic etc.)? My unit is 600mw and can burn a match only to the maximum of 30cm.

2. For anyone who owns this specific model:
In my unit the focus is VERY loose. In fact it is so loose, that part of it is completely free and won't focus/defocus at that part (but the other parts can focus/defocus). Is this normal in this model?

I asked the vendor and he says that it's normal. I want to hear what is your opinion/experience?


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Old 08-06-2011, 08:47 AM #4
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Default Re: Looking for 500mw 808nm IR focusable clicky switch

Does the dot produce more of a line / oval when defocused a bit? Pictures of the dot?
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Old 08-06-2011, 09:41 AM #5
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Default Re: Looking for 500mw 808nm IR focusable clicky switch

Quote:
Originally Posted by HaloBlu View Post
Does the dot produce more of a line / oval when defocused a bit? Pictures of the dot?
Can't provide pictures of the dot, but yes, the shape of the dot is "-" shape rather than"." shape when focused. When defocused a bit the shape of the dot is much like a square or a rectangle.
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Old 08-10-2011, 02:33 PM #6
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Default Re: Looking for 500mw 808nm IR focusable clicky switch

Without any corrective optics the beam will have a higher divergence in the direction fo the slow axis of the laser diode. A prism pair or set of cylindrical lenses can compensate this.
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