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IR laser and blooming problem
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<blockquote data-quote="Double Naught Spy" data-source="post: 1115853" data-attributes="member: 55410"><p>The 720 nm filter would be like using chicken wire to stop flies. The smaller wavelength IR light passes right through the larger wavelength filter.</p><p></p><p>It does sound like far too much power for the distance you are shooting. That is a real problem with lasers that are not variable power when using NV.</p><p></p><p>However, when hitting animal fur, you will get blooming regardless of the power. The laser hits the follicles, is refracted and lots of directions, scintilates, and that is what you see. Basically the beam is dispersed by the hair over a much wider areas than the beam actually hits, hence the bloom. So a 1" beam on target can result in a 5" or 6" bloom in the hair of the target.</p><p></p><p>I am not sure what a good suggestion would be other than to pick a better laser with variable power settings or get a much less capable NV devise. If you are using this as an aiming laser and try to put a filter on it, note that the filter may slightly refract the light and cause it to point in a slightly different position, negating your zero.</p></blockquote><p></p>
[QUOTE="Double Naught Spy, post: 1115853, member: 55410"] The 720 nm filter would be like using chicken wire to stop flies. The smaller wavelength IR light passes right through the larger wavelength filter. It does sound like far too much power for the distance you are shooting. That is a real problem with lasers that are not variable power when using NV. However, when hitting animal fur, you will get blooming regardless of the power. The laser hits the follicles, is refracted and lots of directions, scintilates, and that is what you see. Basically the beam is dispersed by the hair over a much wider areas than the beam actually hits, hence the bloom. So a 1" beam on target can result in a 5" or 6" bloom in the hair of the target. I am not sure what a good suggestion would be other than to pick a better laser with variable power settings or get a much less capable NV devise. If you are using this as an aiming laser and try to put a filter on it, note that the filter may slightly refract the light and cause it to point in a slightly different position, negating your zero. [/QUOTE]
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IR laser and blooming problem
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