520nm 220mw pen build

[Miya]

GH0521DE2G 135mw 520nm diode

10440 2x
LDSE500 buck boost driver 500ma set
220mw G-2 lens

i love single mode green laser

wow...!


I do not recommend a current above 500ma.
I recently lost another diode using an unstable Chinese boost driver.
Perhaps the reason is over 600ma setting.
NDG7475 1Amp feels like it.. before it died ..


What will win?

PLP520-B1 osram diode VS GH0521DE2G ???

I wanna know

 

[BowtieGuy]

Looks nice, Miya, I really like the white host color of your pen!

 

[paul1598419]

Nice job. I haven't used this diode as I have plenty of 520nm laser pens so I don't know it specs off the top of my head. If it were like the other Sharp diodes I have seen over the past year+, 500 mA would be high, but I know that it isn't. Thanks for sharing it here. I have been able to get 135 mW out of the other Sharp diodes using 275 mA. That is a little more than half what you used on this one.

 

[Miya]

I purchased from AliExpress. and It has a blurry rectangle around the point. like this.. ㅡ
Green point is perfect . Single mode diodes are the best.

 

[paul1598419]

Yeah you can get rid of the rectangular artifact by using the acrylic lens that comes free with most module purchases. You will lose less power too over the 2 element 520nm AR coated lenses from DTR. These seem more pronounced with the Sharp diodes than with other manufacturers. But, many 520nm diodes have these artifacts to some extent.

 

[Miya]

Yeah you can get rid of the rectangular artifact by using the acrylic lens that comes free with most module purchases. You will lose less power too over the 2 element 520nm AR coated lenses from DTR. These seem more pronounced with the Sharp diodes than with other manufacturers. But, many 520nm diodes have these artifacts to some extent.

i know. but Rectangular shape is not sharper than Sharp 495. And i like the sharp beam

 

[Elektrotechniker]

Is the dot round? Any artifacts around it?

 

[Lifetime17]

Hi, I enjoy the SM 520's they have a greater divergence , heres one with a 3E lens the dot is awesome. As Paul stated an acrylic lens is also great to use on these SM diodes. here is a PL520b in a 1X10440 copper host I built , Nice work on your pen Miya.
Rich

 

[Miya]

Hi, I enjoy the SM 520's they have a greater divergence , heres one with a 3E lens the dot is awesome. As Paul stated an acrylic lens is also great to use on these SM diodes. here is a PL520b in a 1X10440 copper host I built , Nice work on your pen Miya.
Rich

PL520B ! nice. i like that. Which driver do you use and output current?

 

[Lifetime17]

Hi,
I used a Micro Flex V5 driver .
Rich

 

[yoonie]

Hi Miya,
Cool stuff here, can we have information about the host itself please?
A place to buy it? Thanks.

 

[Miya]

Hi,
I used a Micro Flex V5 driver .
Rich

how much current set? i think 350ma

 

[Miya]

Hi Miya,
Cool stuff here, can we have information about the host itself please?
A place to buy it? Thanks.

This host I changed by use paint.

 

[Lifetime17]

how much current set? i think 350ma

PL520b / 240mA .... 300mA maximum

 

[Miya]

PL520b / 240mA .... 300mA maximum

240ma ~ 300ma. safe current.
Someone of my friends are using the 430ma setting
that PL520B laser is 180mw output at the 430ma current. . Danger !
Osram diode are the Great !

 

[Lifetime17]

Hi,
430mA no last long ....
Rich