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View Poll Results: Which 473 nm portable laser would you recommend?
Dragon Lasers 2 22.22%
Optotrotronics 0 0%
CNI 2 22.22%
Other (please add your recommendation in comment) 6 66.67%
Multiple Choice Poll. Voters: 9. You may not vote on this poll

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Old 03-08-2017, 12:14 PM #17
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Default Re: 473 nm high power portable recommendations?

Sorry for that, Alaskan. However I think you are some time in the hobby already to know that it is quite expensive. But it is a beautiful wavelength IMO - must have in the laser collection.


__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.
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Old 03-08-2017, 12:19 PM #18
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Default Re: 473 nm high power portable recommendations?

About three years in now and 20K USD. Here's a comparison between 473 ad 532nm for those who might want to see how their brightness compares for the same power outputs:

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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3
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Old 03-08-2017, 12:31 PM #19
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Default Re: 473 nm high power portable recommendations?

Well, that means it is serious. I think - for three years - such an amount (and more) you can spend in lasers, cars or women of course...

Is there photopic or scotopic luminosity function used in the comparsion? I did not checked these comparsion as it was not really relevant to me - I just want 473 nm.

Edit: Looks more like photopic (daylight) comparsion to me.
__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.

Last edited by Radim; 03-08-2017 at 12:33 PM.
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Old 03-08-2017, 12:33 PM #20
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Default Re: 473 nm high power portable recommendations?

I am sure it isn't scotopic, I would sure like to see a curve which shows the difference between daylight and low light viewing of the beam.

Edit: Found this http://hyperphysics.phy-astr.gsu.edu...on/bright.html
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

Last edited by Alaskan; 03-08-2017 at 12:42 PM.
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Old 03-08-2017, 12:47 PM #21
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Default Re: 473 nm high power portable recommendations?

Here it is for example:


(click the image for source)

I think it approximates a beam as well. However blue light is diffused more in the air (that's why sky is blue and sunsets/sunrises red). Some time ago I've made some simple excel model for that used luminosity function values I found on internet to calculate estimates of various danger distances of my lasers (like flashblindess hazard distance). I might find it and put the source of the website I used if you like.
__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.

Last edited by Radim; 03-08-2017 at 12:47 PM.
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Old 03-08-2017, 12:52 PM #22
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Default Re: 473 nm high power portable recommendations?

Huge difference, peak sensitivity to wavelength slides down about 50nm, that is very substantial. I read somewhere that on average, for most individuals, the peak sensitivity to wavelength slides down from 555 to 507nm, but nice to see it in a curve. Thank you.
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3
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Old 03-08-2017, 02:23 PM #23
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Default Re: 473 nm high power portable recommendations?

Yes, this is why it is wise to specify which light condition when comparing visibility. And of course it is individual to each - these curves are some kind of "average". You can see it in photopic functions - there are even more options shown. For example I can see a bit of IR spectre quite well (from TV remote control or IR port of my mobile for example), also people see 405 nm differently - I remember there was a thread on this some time ago, in addition people with artificial corneas might see UV as these wavelengths might not be filtered by implants.
__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.
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Old 03-08-2017, 03:53 PM #24
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Default Re: 473 nm high power portable recommendations?

Here's a question for you, or someone. I assume our cameras are adjusted to have the same sensitivity across the visible wavelengths as our eyes have, otherwise the colours would come out wrong, correct? Of course, our cameras can see IR when we can't whether IR filtered or not, I haven't seen a camera yet which has a filter that cuts out all of the IR, at least, not in the general consumer market, so not referring to that.
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

Last edited by Alaskan; 03-08-2017 at 03:53 PM.
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Old 03-08-2017, 04:55 PM #25
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Default Re: 473 nm high power portable recommendations?

Well, its a bit tricky. Of course manufacturers tend to capture what human eye see by their cameras. But there exist some color spaces (like for example CMYK for printed stuff - subtractive mixing, sRGB and Adobe RGB for displayed stuff - additive mixing). Cameras use some RGB spaces, however the color space of human perception is much wider than most commercial technology can capture and display. For example, when I took some pics of 520 nm and 532 nm, they look about the same, however you see them different. And the blue is the most tricky in my experience so far.

Also human brain just adjusts color perception according to lighting, that's why you have to balance white differently for example under lightbulbs and under daylight lighting.

I fight with that stuff, when I'm adjusting my artworks to look like by human eye as much as possible, but with precise laser wavelengths it is just not possible due to current technology imperfections.

Check this (look for 520 nm where it lays):


(source is wiki - just click on pic for more info)


Regarding IR - it is not supposed that IR is present much in most cases that much to influence picture too mich in most cases: In cheap cameras (like mobile phones) you can clearly see it, however DSLR and more serious cameras are IMO somehow IR filtered, how would you take pic of fire for example? There is a lot of "heat" radiation - IR. Try it with mobile and with some DSLR and you will probably see the difference.

Just for interest look here: https://www.extremetech.com/electron...m-super-camera

Very interesting photography under IR.
__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.

Last edited by Radim; 03-09-2017 at 12:04 AM. Reason: Some corrections.
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Old 03-15-2017, 03:15 PM #26
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Default Re: 473 nm high power portable recommendations?

Fresh news: I've just updated my signature!

Quote:
Ordered, coming soon:
473 nm | 100 mW | Jet Lasers PL-E Pro



Thanks to everybody for your recommendations.

I've had a quite long discussion with Gray about my selection, therefore many many thanks to him (and Jet Lasers team) - superior customer service - the best from all of my laser purchases so far.


It was not really easy to select, but I went for black version with beam expander and some other accessories. I might write some points from the entire selection process later, if you like...
__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."
"If you do not feel and experience the magic, you cannot become the master of wizardry."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro - Review
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

532 nm | 1.4+ W | Optotronics RPL-II - LPF link
589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Wishlisted:
Sanwu's RGB Portable (being developed) - LPF link

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: Soul in the Surreal world
Instagram: @radimmatera

I'm back! And with question: Is this hologram? What is it? My mind is bent...

Please use hashtag #laserpointerforums for laser related stuff on social media. Thank you.

Last edited by Radim; 03-24-2017 at 02:32 PM.
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