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Old 01-18-2012, 07:05 AM #1
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Default 445 nm diode focus problem

Hi i got a problem, my 445 nm 1.4 W laser got glow problem. I dont know how to say in english. just look on photos and tell me how to fix it
focused with 3 element lense, and unfocused without lense
When unfocused dont seen any bad. When focused u will see on the left small glow. How to fix it.
Sorry about my english




http://imageshack.us/photo/my-images...085244216.jpg/
http://imageshack.us/photo/my-images...085427297.jpg/



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Old 01-18-2012, 07:36 AM #2
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Default Re: 445 nm diode focus problem

That's a normal abnormality of a 445nm multi-mode diode. Sometimes the square shaped artifact is very noticable, sometimes it is not.
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<+vk2fro> on camping trips where do you expect me to plug that in? a gum tree?
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Old 01-18-2012, 01:20 PM #3
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Default Re: 445 nm diode focus problem

Try with another lens. You could have a bad lens with internal reflections.
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Old 01-19-2012, 05:28 AM #4
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Default Re: 445 nm diode focus problem

I got 2 pics lenses and the problem with the each one. Maybe i have got one of lense put incorrect. Can anyone show how should be correct position?
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