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- Jun 24, 2012
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First,im a newbie and i would like to build a high power 445nm laser!
the video i reffered is at here(im not going to follow exactly what the guy done in the video) :
How to build a cheap 1000mW+ blue laser - YouTube
the doide im going to buy is at here (im buying the $64 version) :
https://sites.google.com/site/dtrlpf/home/diodes/445-m140-didoes
right now i've almost buy all of the parts and they're on the way now,expect safety goggle and laser diode,these two are the most expensive one and i 'll only buy them after i get answer from this post!
parts i buy and their urls:
heat sink :
Heat Sink Heatsink Cooling Mount Holder for 12mm laser modules
the heat sink i buy was not at there anymore,but it's a heat sink for 12mm module ,juz around like this
driver :
18V 5W Cree Circuit Board for Flashlights (16.8mm*5.5mm) - Free Shipping - DealExtreme
and also,im going to build a driver myself,im following athe video from here :
DIY: How to build a laser diode driver - YouTube
i've think about laser safety too,im planning to buy an eagle pair for myself :
Eagle Pair® 190-540nm & 800-2000nm Laser Safety Goggles
or
http://laserpointerforums.com/f44/cheap-safety-glasses-70627.html
the uvex goggle in this thread was cheap,and one of the user has tested it and proved it can block 445nm! does this goggle can be trusted?if can i'd rather buy this goggle as it's far more cheaper than eagle pair!
So as newbie,im making this post to ask questions:
for this laser,i think i won't have a host for it,as the heat sink is too big!so i may just stick all parts on the heatsink,just like the guy do in the video.
First,is about safety:
1. Im going to use this laser to burn stuff at really close range,so im going to stare at the blue dot at a very close range,not more than 1 meter.
1W < output of laser < 2W.
So,does the laser safety goggle from above can protect me well from the 445nm laser? bcoz it's very cheap and i can't afford higher that this !
Second it's about the DIY driver:
for the power source of driver,it doesn't mind for me to use 1x or 4x 18650 or use a ~19V laptop adapter! a microboost driver would be better,but a linear driver will be ok for me too.
1. what is the power rating of the resistor needed in the video?im buying the 1/4 W resistor,but i think it's too less,so i buy another,which is 1/2 W resistor.Does the driver suitable for this M-140 doide?im going to set the output at around 1.5A.(im not going to push the doide to 1.7A which is it's limit,for best life expectancy)
3.Does the driver board i buy(not the DIY driver) suitable with this m140 doide?it giving output of 1.25A,then what will be the output of the m140 diode?if it's not suitable,which driver should i buy,can give me the link?i dont want to buy the 1.5A moded driver from DTR because it require additional heatsink,i would want a driver that does not require heatsink,i don't mind if the driver is bigger,just don't be too big and it will be ok!
Now it's about the diode
1. what is the output power of the m140 doide sell by DTR($64 version)? is a 2W diode?
2. does the lens included(3 element glass lens) itself is a collimating lens,so i can juz use the lens that come with it,don't need to buy a new lens?
3. what's the resistance of the m140 diode from DTR?i would like to calculate the output power ! assume the resistance of diode is 1ohm,the output current of the driver from above link is 1.25 A,so does the output power will be(I^2)/R = 1.56W ?
4. does the module come with the m140 diode from DTR is 12mm module? if it's not im going to buy another heatsink.and also,im planning to buy a thermal grease and apply it in between the laser module and heat sink to ensure the heat will fully transfer to the heatsink!does this idea suitable?
Finally,some question that i hope can get a good answer from DTR :
1.do u ship ur m140 doide to malaysia?because im from malaysia and i would like to buy doide from you.and what's the estimated time for the doide to arrive?
2.do u test ur doide before shipping it?with appropriate driver of course!
i think that's all for now,if there's other question,i will ask in this thread,
thanks!
and sorry for my broken english!!
the video i reffered is at here(im not going to follow exactly what the guy done in the video) :
How to build a cheap 1000mW+ blue laser - YouTube
the doide im going to buy is at here (im buying the $64 version) :
https://sites.google.com/site/dtrlpf/home/diodes/445-m140-didoes
right now i've almost buy all of the parts and they're on the way now,expect safety goggle and laser diode,these two are the most expensive one and i 'll only buy them after i get answer from this post!
parts i buy and their urls:
heat sink :
Heat Sink Heatsink Cooling Mount Holder for 12mm laser modules
the heat sink i buy was not at there anymore,but it's a heat sink for 12mm module ,juz around like this
driver :
18V 5W Cree Circuit Board for Flashlights (16.8mm*5.5mm) - Free Shipping - DealExtreme
and also,im going to build a driver myself,im following athe video from here :
DIY: How to build a laser diode driver - YouTube
i've think about laser safety too,im planning to buy an eagle pair for myself :
Eagle Pair® 190-540nm & 800-2000nm Laser Safety Goggles
or
http://laserpointerforums.com/f44/cheap-safety-glasses-70627.html
the uvex goggle in this thread was cheap,and one of the user has tested it and proved it can block 445nm! does this goggle can be trusted?if can i'd rather buy this goggle as it's far more cheaper than eagle pair!
So as newbie,im making this post to ask questions:
for this laser,i think i won't have a host for it,as the heat sink is too big!so i may just stick all parts on the heatsink,just like the guy do in the video.
First,is about safety:
1. Im going to use this laser to burn stuff at really close range,so im going to stare at the blue dot at a very close range,not more than 1 meter.
1W < output of laser < 2W.
So,does the laser safety goggle from above can protect me well from the 445nm laser? bcoz it's very cheap and i can't afford higher that this !
Second it's about the DIY driver:
for the power source of driver,it doesn't mind for me to use 1x or 4x 18650 or use a ~19V laptop adapter! a microboost driver would be better,but a linear driver will be ok for me too.
1. what is the power rating of the resistor needed in the video?im buying the 1/4 W resistor,but i think it's too less,so i buy another,which is 1/2 W resistor.Does the driver suitable for this M-140 doide?im going to set the output at around 1.5A.(im not going to push the doide to 1.7A which is it's limit,for best life expectancy)
3.Does the driver board i buy(not the DIY driver) suitable with this m140 doide?it giving output of 1.25A,then what will be the output of the m140 diode?if it's not suitable,which driver should i buy,can give me the link?i dont want to buy the 1.5A moded driver from DTR because it require additional heatsink,i would want a driver that does not require heatsink,i don't mind if the driver is bigger,just don't be too big and it will be ok!
Now it's about the diode
1. what is the output power of the m140 doide sell by DTR($64 version)? is a 2W diode?
2. does the lens included(3 element glass lens) itself is a collimating lens,so i can juz use the lens that come with it,don't need to buy a new lens?
3. what's the resistance of the m140 diode from DTR?i would like to calculate the output power ! assume the resistance of diode is 1ohm,the output current of the driver from above link is 1.25 A,so does the output power will be(I^2)/R = 1.56W ?
4. does the module come with the m140 diode from DTR is 12mm module? if it's not im going to buy another heatsink.and also,im planning to buy a thermal grease and apply it in between the laser module and heat sink to ensure the heat will fully transfer to the heatsink!does this idea suitable?
Finally,some question that i hope can get a good answer from DTR :
1.do u ship ur m140 doide to malaysia?because im from malaysia and i would like to buy doide from you.and what's the estimated time for the doide to arrive?
2.do u test ur doide before shipping it?with appropriate driver of course!
i think that's all for now,if there's other question,i will ask in this thread,
thanks!
and sorry for my broken english!!
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