Old 09-04-2011, 05:56 PM #1
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Default Could I have damaged my eyes?

Hi there, this is the first time I have ever posted on this site, and I am also not very experienced with lasers, so I apologize if this thread is in the wrong section, or if my question is not well-informed.

So, I recently received this Amazon.com: Laser Star: Toys & Games as a birthday gift, and I believe I may have accidentally looked into the beam of the laser. I really should have been more careful.

Now, according to a warning message on the device, it is a class IIIa laser. I was just wondering if I could have damaged my eyes, and if I should see an eye doctor about this. I have not noticed any vision problems yet, and this all happened last night. This seemed like the best website to ask such a question.


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Old 09-04-2011, 06:00 PM #2
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Default Re: Could I have damaged my eyes?

Dont worry about it. Those split it into so many beams that each one is so low powered. As long as you didnt take it apart and get caught by the beam before it splits or stare into one of the split beams for minutes, you are fine
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Old 09-04-2011, 06:04 PM #3
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Default Re: Could I have damaged my eyes?

I would agree with Jacob, also if you don't see any visual problems (blind spots, grey areas, etc) you are probably fine.
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Old 09-04-2011, 06:13 PM #4
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Default Re: Could I have damaged my eyes?

From what I just read they don't say what power of Laser it
uses except that it is a DPSS 532nm Laser.
The Laser Light that would come out of the projector to show
one green spot would probably be of a quite low power after
being dispersed into many green dots by the multiphase
diffractive holographic optics
.....

Quote:
hinkGeek, I'm a techie. How does it really work?
The Laser Stars Projector utilizes a state of the art Diode Pumped, Solid State (DPSS) green laser combined with custom developed multiphase diffractive holographic optics, super luminous diodes and precision motors to produce the laser stars effect. The coherent light produced by the DPSS laser passes through a passive diffractive holographic optical element, which in turn passes through a circular periodicity electromechanical wheel, which is driven by a precision motor to create the soothing motion of the star field. So there.
If you are still worried or believe your eye has been compromised
it is always a good idea to seek professional medical help.


Jerry
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Old 09-04-2011, 06:24 PM #5
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Default Re: Could I have damaged my eyes?

You should be fine, that doesn't look powerful enough to cause major harm assuming all it did was glance into your eyes.
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Old 09-04-2011, 06:31 PM #6
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Default Re: Could I have damaged my eyes?

I have seen that same unit at Spencer's and on a few other sites.. It's always listed as 100 mW red and 50 mW green.. Which I am sure are all under spec and being diffused quite a bit through the grating.

The individual points those things generate are not that bright though there are "hot spots" closer to the center which have higher power...

In any case you are probably OK but if there is any concern go to a doctor.

EDIT: Just to make sure I am not downplaying it 50 mW is more than enough to cause eye damage under normal circumstances (not being diffused).
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Old 09-04-2011, 10:02 PM #7
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Default Re: Could I have damaged my eyes?

150mW combined is still a lot, the power would have to be spread out at least a factor 30. The zeroth order diffraction usually has the highest efficiency, so I'd do the math to see what power is emitted in a single beam if I had a thing like this.
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Old 09-04-2011, 11:11 PM #8
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Default Re: Could I have damaged my eyes?

If it was a high power laser, the age limit would be higher than 6 Months, Educated guess is that you should learn by your mistakes and don't stare into the beam.

You'll be fine.
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Old 09-05-2011, 01:52 AM #9
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Default Re: Could I have damaged my eyes?

Quote:
Originally Posted by Carl Witcombe View Post
If it was a high power laser, the age limit would be higher than 6 Months, Educated guess is that you should learn by your mistakes and don't stare into the beam.

You'll be fine.
What the he!! does that mean......

Are you sure you are on the right Thread....


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Old 09-05-2011, 01:56 AM #10
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Default Re: Could I have damaged my eyes?

Thanks for all the replies guys, I have no experience with this kind of thing, so I wasn't sure if I needed medical attention. I haven't noticed any blind spots in my vision or anything, and from what you all say I probably won't, but if I do, I'll make an appointment with a doctor.

Quote:
Originally Posted by Bluefan View Post
150mW combined is still a lot, the power would have to be spread out at least a factor 30. The zeroth order diffraction usually has the highest efficiency, so I'd do the math to see what power is emitted in a single beam if I had a thing like this.
On the device, there is a sticker that says "Max Output: <5mW." I'm not really sure where you got 150 mW from.
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Old 09-05-2011, 01:59 AM #11
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Default Re: Could I have damaged my eyes?

If the stated Max output is <5mW and it was just a glancing
beam that hit your eye... All is good...

You should have mentioned the power label from the get-go..
Glad you are fine..


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Old 09-05-2011, 04:39 AM #12
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Default Re: Could I have damaged my eyes?

if the sticker says <5mW, take a deep breath, your absolutely fine! That's the power of a walmart laser. A quick shot to the eye does nothing. I remember reading a study somewhere that in tests a 45 second shot with a 5mW had very little eye damage, but it was there, but it probably wouldn't affect the vision of the person. A quick shot to the eye with a 5mW, there's nothing to worry about.
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Old 09-05-2011, 04:49 AM #13
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Default Re: Could I have damaged my eyes?

Quote:
Originally Posted by cvbcbcmv View Post
if the sticker says <5mW, take a deep breath, your absolutely fine! That's the power of a walmart laser. A quick shot to the eye does nothing. I remember reading a study somewhere that in tests a 45 second shot with a 5mW had very little eye damage, but it was there, but it probably wouldn't affect the vision of the person. A quick shot to the eye with a 5mW, there's nothing to worry about.
Either way lasers should not ever be shined into anyones eye. From what I've read today, you should be the one telling people this.

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Old 09-05-2011, 04:52 AM #14
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Default Re: Could I have damaged my eyes?

Quote:
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Either way lasers should not ever be shined into anyones eye. From what I've read today, you should be the one telling people this.

Lase
Please do not put words in my mouth. At no point did I say it's fine to shine it in your eyes or other peoples eyes, or promote doing so, or say it's OK. What I said, staying on topic with the thread, was if he had a quick shot to the eye with a <5mW laser, he is fine, and he doesn't have to worry.

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Old 09-05-2011, 05:18 AM #15
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I didn't put words pin your mouth.

I simply added what you, as a spokesman for a laser company, should have said.

When talking about scientific tests you should always include proof and a disclaimer for no one to try it at home.
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Old 09-06-2011, 11:25 PM #16
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Default Re: Could I have damaged my eyes?

Quote:
Originally Posted by lasersbee View Post
What the he!! does that mean......

Are you sure you are on the right Thread....


Jerry

Lasersbee, if you look at the description on Amazon, it states on the sale page "Manufacturer recommended age: 6 months and up ",
In other words this device is safe to use with kids, thats why I said it's a low power laser, If the manufacturer had decided that this device was not safe they would have stated that fact in the minimum age and description. As, if the manufacturer were using a high power diode and a person or child had damaged their eyes they would find themselves in court.


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