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Old 08-14-2017, 07:23 PM #1
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Default Did I lose a piece of my laser optics?

Hi, recently I bought this laser module - https://www.banggood.com/405nm-50mW-...?rmmds=myorder
And I did a few modifications, like replacing the provided power supply. In the process, I unscrewed the optics and it popped out, because of the spring loading.
After reassembling, my laser cannot be focused to a dot anymore, this is the best focus that I can get - http://i.imgur.com/xhcjwkv.jpg
This is the current state of the laser optics - http://i.imgur.com/KmefCKb.jpg

Am I missing a piece of the optic assembly? Or did I just somehow destroyed the laser?


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Old 08-14-2017, 08:35 PM #2
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Default Re: Did I lose a piece of my laser optics?

Looks like your laser might be dead there bud Kind of looks LED'd. Someone else with more experience could tell you better though
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Old 08-14-2017, 09:36 PM #3
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Default Re: Did I lose a piece of my laser optics?

Your window looks cracked, is it?

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Old 08-14-2017, 10:01 PM #4
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Default Re: Did I lose a piece of my laser optics?

Quote:
Originally Posted by RedCowboy View Post
Your window looks cracked, is it?


Good job noticing that, going by the image of the dot OP provided that looks like a likely cause.

Can you give us closer up pictures of the LD window OP?
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Old 08-14-2017, 10:42 PM #5
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Default Re: Did I lose a piece of my laser optics?

or by any chance if the diode window isnt broke try the lens backward.maybe after you remove it you placed it wrong
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Old 08-14-2017, 10:50 PM #6
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Default Re: Did I lose a piece of my laser optics?

That looks like the bar in the window of most LDs that is part of the diode holding the emitter. I was thinking the same thing about the lens being in backwards.
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Old 08-14-2017, 10:54 PM #7
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Default Re: Did I lose a piece of my laser optics?

Quote:
Originally Posted by paul1598419 View Post
That looks like the bar in the window of most LDs that is part of the diode holding the emitter. I was thinking the same thing about the lens being in backwards.

Could be an image artifact, but that window at the least doesn't look clean.

I can see the mount for the LD chip too, but I don't think that's causing the window to look dirty/damaged.
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Old 08-14-2017, 10:59 PM #8
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Default Re: Did I lose a piece of my laser optics?

There looks to be some kind of shmutz all over the module and diode. Can't tell if it is real or just the camera.
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Old 08-14-2017, 11:21 PM #9
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Default Re: Did I lose a piece of my laser optics?

Get a pic of the other side of the lens.
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