Blue Ray Scanner Graphics

[lamborgini8]

I know people here have used blue rays in scanners and they looks awesome, one thing putting me off after finally building a 90mW blue ray pointer is the furthur away the dot is, the more blury it is. Yet if you go up close its easy to see a normal dot.

My question is are blue rays totally useless if you want to do any graphics with them? I can imagine having a RGV scanner drawing a smiley face or something very well and then it being destroyed by a very blury blue ray.

[mixedgas]

humans can't focus deep violet. So the question becomes, how old are your eyes.

Steve

[lamborgini8]

humans can't focus deep violet. So the question becomes, how old are your eyes.

Steve

Almost 18 years old actually :P

Its 90mW and I can see the beam in a dark room easily from 45 degree angles of the beam without any smoke at all.

I pointed it at the houses roof oposite mine which would be about the distance of a small/medium sized hall and the 'dot' must have been about 1 meter big.

I think its put me off using it for any scanners other than simple beam effects. I can see it being along the lines of a straight line going red > green blury violet...

[Laserman532]

Almost 18 years old actually :P

Its 90mW and I can see the beam in a dark room easily from 45 degree angles of the beam without any smoke at all.

I pointed it at the houses roof oposite mine which would be about the distance of a small/medium sized hall and the 'dot' must have been about 1 meter big.

I think its put me off using it for any scanners other than simple beam effects. I can see it being along the lines of a straight line going red > green blury violet...

You are doing something wrong. I can make a dot at very great distances. You know the dot is focused at large distances when it changes from fuzz to speckle. If you are using an aixiz module you may not have your diode pressed all the way in and or your lens is bottoming out but a br can be focused...it looks fat along the shaft but it can be collimated at easly 75 to 100 feet.

[lamborgini8]

You are doing something wrong. I can make a dot at very great distances. You know the dot is focused at large distances when it changes from fuzz to speckle. If you are using an aixiz module you may not have your diode pressed all the way in and or your lens is bottoming out but a br can be focused...it looks fat along the shaft but it can be collimated at easly 75 to 100 feet.

No, I can focus it to a dot at long distances but when I view it from a distance its just a blur. It does have the 'speckle' look from a distance but up close it is a perfect dot.

What I am trying to say is if the case is that you have to be close to the dot to actually see it properly then its going to be totally useless in a scanner.

I have it focused to about a 4mm dot about 5 to 6 meters away. If I walk up close to the dot then I can see that its a dot, if I walk away from the dot and attempt looking at it then its just a blur.

[Laserman532]

No, I can focus it to a dot at long distances but when I view it from a distance its just a blur. It does have the 'speckle' look from a distance but up close it is a perfect dot.

What I am trying to say is if the case is that you have to be close to the dot to actually see it properly then its going to be totally useless in a scanner.

I have it focused to about a 4mm dot about 5 to 6 meters away. If I walk up close to the dot then I can see that its a dot, if I walk away from the dot and attempt looking at it then its just a blur.

Ok better information...you are correct! 4 mm dot is good at that distance. Isnt it weird???? That wavelength plays tricks with your eyes / brain. So you can have a friend stand by the dot and you focus it and he will tell you when it is small (make small adjustments) then that is best case. I say hook it up to your scanners and check it out because you might like the effect. And if you really want to have a good time. mix up some tide detergent and sort of splash your walls or paint your walls with it and it becomes very interesting

[lamborgini8]

Ok better information...you are correct! 4 mm dot is good at that distance. Isnt it weird???? That wavelength plays tricks with your eyes / brain. So you can have a friend stand by the dot and you focus it and he will tell you when it is small (make small adjustments) then that is best case. I say hook it up to your scanners and check it out because you might like the effect. And if you really want to have a good time. mix up some tide detergent and sort of splash your walls or paint your walls with it and it becomes very interesting

Funny you say that, my dad spent about 10 mins just walking backwards and forwards amazed at it repeatedly saying "wow, I have never seen anything like that before" haha.

Pain in the ass for me because I have no one to help me focus it so I have to keep adjusting it and walking backwards and forwards.

Quick thought that just popped into my head. If the blue ray is more powerful would it be easier to clearly see the dot from a distance? If I ever do put one in a pointer it will be running at around 175mW.

As for painting the walls, I would rather not... I only just got the walls painted haha.

[Laserman532]

Funny you say that, my dad spent about 10 mins just walking backwards and forwards amazed at it repeatedly saying "wow, I have never seen anything like that before" haha.

Pain in the ass for me because I have no one to help me focus it so I have to keep adjusting it and walking backwards and forwards.

Quick thought that just popped into my head. If the blue ray is more powerful would it be easier to clearly see the dot from a distance? If I ever do put one in a pointer it will be running at around 175mW.

As for painting the walls, I would rather not... I only just got the walls painted haha.

What else are dads for??? here is a trick I use. I mount a front surface mirror on the wall hit it with the beam and reflect it back to where I am standing and then focus the beam where I can see it

No other wavelength will mess with your eyes and brain like a blue ray.

be sure to thank dad!

[lamborgini8]

What else are dads for??? here is a trick I use. I mount a front surface mirror on the wall hit it with the beam and reflect it back to where I am standing and then focus the beam where I can see it

No other wavelength will mess with your eyes and brain like a blue ray.

be sure to thank dad!

I don't have any first surface mirrors other than whats in my scanner.

I'll see if I can get him to help a bit later.

[heroic]

I don't have any first surface mirrors other than whats in my scanner.

A cheap source of first surface mirrors is an old Polaroid camera. Many of them include a surprising variety of nifty optical devices- Land was a genius!