Need suggestion about my 445 nm laser

moh17 said:

Is it safe to shine a laser to a TV screen?

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That's not a good idea, it could be reflected too much but more likely you will damage the screen and have missing pixels, this has happened to a couple of people here although I think it was their computer screens.

Alan

I usually fail to the safe side with lasers and eyes.. You only get one set of eyes, so I would ALWAYS recommend glasses and common sense when using lasers that could even "potentially" damage your vision. If you think it might hurt you then stop til you get protection.
My two cents, but I just want to stress the importance of laser safety to those who may forget or not realize that these things can hurt you or others if we are not careful.

Flammenfaust said:

I usually fail to the safe side with lasers and eyes.. You only get one set of eyes, so I would ALWAYS recommend glasses and common sense when using lasers that could even "potentially" damage your vision. If you think it might hurt you then stop til you get protection.
My two cents, but I just want to stress the importance of laser safety to those who may forget or not realize that these things can hurt you or others if we are not careful.

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That is true, I always wear protective glasses when playing with powerful lasers; in my case I thought that the laser is 10 mW only when I discovered that it is 100 mW, I started wearing my safety glasses. I bought a true 5mW blue laser and i feel much more comfortable with it and no need to wear any safety glasses. Common sense is important; however, unexpected exposure could happen even when you use common sense that's why wearing safety glasses is essential for lasers > 5mW or in other words class 3B lasers; unlike class 3R lasers where my blink reflex will stop damage from occurr

even a 5-10mw can be irritating to the eye. I would assume that direct contact could cause some damage. I have had some reflection outside with my 1.4w 445nm that was uncomfortable. I could not imagine taking a direct blast.

Flammenfaust said:

even a 5-10mw can be irritating to the eye. I would assume that direct contact could cause some damage. I have had some reflection outside with my 1.4w 445nm that was uncomfortable. I could not imagine taking a direct blast.

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a reflection from a non-reflecting surface such as a white wall, paper, etc from a 1.4 W is much more dangerous than taking a direct hit from a < 5 mW lasers. Both 1.4 W and any laser above 5mW will cause permanent damage to the eye if either a direct hit or a reflected beam occurs. However, reflection from a white wall, paper, etc from a 10 mW is safe, only direct hit and reflection from reflecting surfaces such as mirrors, CDS, shiny metals will possibly cause a permenant damage usually a blind spot. 5 mW is the maximum limit where a normal person's blink reflex will stop damaging from occur that does not eliminate the possibility of a damage to occur but most likely it is a temporary injury .