LPF Laser Pointer Company Database








Welcome to Laser Pointer Forums! If you are looking for a laser you may want to check out the database of laser pointer companies. The link will open in a new window for your convenience.

Green Laser Pointers Blue Laser Pointers Red Laser Pointers
Yellow Laser Pointers Violet Laser Pointers Orange Laser Pointers
Laser Pointers by Power - 1 Watt+ Laser Pointers by Power - 500mW+ Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes


























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > General

LPF Database of Laser Pointer Companies






Reply
 
LinkBack Thread Tools Display Modes
Old 08-08-2016, 05:01 AM #1
Mr Yagyuu's Avatar
Member
 
Join Date: Jun 2016
Location: Japan
Posts: 44
Rep Power: 0
Mr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond repute
Mr Yagyuu Mr Yagyuu is offline
Member
Mr Yagyuu's Avatar
 
Join Date: Jun 2016
Location: Japan
Posts: 44
Rep Power: 0
Mr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond repute
Default 520nm advice

Nice day for laser shot!


i have question about 520nm.

First, I will create a low-power laser pen AAA type (30~60)

Where to buy good?. i want a recommend (diode store)

1pc Osram 515nm 520nm 530nm 30120mW Laser Diode LD Driver Power Supply 3v on Aliexpress.com | Alibaba Group

The circuit is good thing?


please give me advice.


__________________
----------------------------------------------------

The human is greed has no limits

520nm 1W NDG7K75T from LMlaser
532nm 200mw from Newgazer



Mr Yagyuu is offline   Reply With Quote








Old 08-08-2016, 07:15 AM #2
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Iraq
Posts: 5,054
Rep Power: 3539
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Iraq
Posts: 5,054
Rep Power: 3539
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: 520nm advice

Maybe good, but since I live in the USA I avoid buying from China if I can, too many times there are problems and it costs too much to return the item. China sellers get a shipping subsidy from their government to make shipping out of country to us cheap, but we can pay far more than the item cost to ship it back. Also, too many of the China sellers are not ethical, they will say anything about their product to sell it.
Although there is one seller in HK I will buy from, Techhood, but in my experience, he makes too many mistakes with orders, or so he says they are.

Google "DTR LPF" to find Jordan's laser parts store, but where are you? Are you in USA or another country?
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

_______
Alaskan is offline   Reply With Quote
Old 08-08-2016, 07:28 AM #3
Mr Yagyuu's Avatar
Member
 
Join Date: Jun 2016
Location: Japan
Posts: 44
Rep Power: 0
Mr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond repute
Mr Yagyuu Mr Yagyuu is offline
Member
Mr Yagyuu's Avatar
 
Join Date: Jun 2016
Location: Japan
Posts: 44
Rep Power: 0
Mr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond reputeMr Yagyuu has a reputation beyond repute
Default Re: 520nm advice

Quote:
Originally Posted by Alaskan View Post
Maybe good, but since I live in the USA I avoid buying from China if I can, too many times there are problems and it costs too much to return the item. China sellers get a shipping subsidy from their government to make shipping out of country to us cheap, but we can pay far more than the item cost to ship it back. Also, too many of the China sellers are not ethical, they will say anything about their product to sell it.
Although there is one seller in HK I will buy from, Techhood, but in my experience, he makes too many mistakes with orders, or so he says they are.

Google "DTR LPF" to find Jordan's laser parts store, but where are you? Are you in USA or another country?
Thank you

south korea here yet..

once i want a challenge to low power laser now.
start 520nm 50mw~80mw.
__________________
----------------------------------------------------

The human is greed has no limits

520nm 1W NDG7K75T from LMlaser
532nm 200mw from Newgazer



Mr Yagyuu is offline   Reply With Quote
Old 08-08-2016, 07:42 AM #4
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Iraq
Posts: 5,054
Rep Power: 3539
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Iraq
Posts: 5,054
Rep Power: 3539
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: 520nm advice

Maybe shipping is much less for you, I have driven a PL520 single mode diode to 80mw output using two Li-ion batteries in series without a constant current driver,. Yes, wiring the batteries direct to the diode which is normally a bad thing to do, but this diode runs well and wouldn't fail for me when driven directly from the battery. When I reported this some have speculated the reason was due to having some resistance in the wires and voltage drop from that, giving the diode closer to its rated voltage, but I am not so sure that is why, I just think this is a very tough diode.

Still, would be a risk to wire the diode direct to the battery, yet DTR did some tests with this diode and if the current is a bit too high it just goes dim and recovers when the current is lowered to normal. Recommendation is to always use a driver, I'd use a boost driver with a single Li-ion battery with that diode. The reason I believe a boost driver might be better for this diode is this; when using a "buck" driver with two 4.2 VDC Li-ion batteries in series to produce 8.4 V from fully charged batteries it will add some voltage drop and if the batteries are drained too far, the diode might get less than the minimum 7.0 VDC required for 50mw output due to too low of a voltage.

Maybe this is a good thing as those batteries should not be drained below 3.7 VDC each anyway (some can go a bit lower) for a total of 7.4 VDC, but if using a buck driver, how much voltage drop does the driver add? If 1 volt of the battery supply voltage is being dropped through the driver, then 1 volt less is available to go to the diode, now when the batteries are 80% drained, you are down to 6.4 VDC supplied to the diode before the batteries are completely out of juice. To prevent this problem check the specs on the buck drivers to see how much voltage drop they produce, some can have a far lower amount of drop and choose one of those instead. Look for a driver which states "low dropout voltage". I believe most of the drivers you will find made for laser diodes will probably have a low dropout voltage, but not always. Of course, this isn't of concern with a boost driver, but I'd check to see what their specification is for the lowest input voltage they will operate at to provide the voltage and current you need for your particular diode.

Obviously, a buck driver with a very low voltage drop would be the better choice for this diode when running two batteries in series, if not to prevent the battery voltage from dropping too low before they are drained, additionally, to conserve battery power. No reason to waste power that way if you can avoid it, a buck with a high voltage drop will turn that extra power into heat instead of staying in your battery. Due to all of these reasons, IF you want to use a buck driver to allow the use of two Li-Ion batteries in series, I'd try to find a one with no more than half a volt of voltage drop.

Here is a link to a PDF document showing the PL520 diode specifications:

http://photos.imageevent.com/qdf_fil...2012-10-23.pdf

Here is a link to Flaminpyro's stuff, including diode drivers:

Flaminpyros Stuf

Here's a like to a manufacturer of low current diode drivers as well as other goodies:

http://www.aixiz.com

and last but certainly not least, DTR's google store and this guy ships fast for everything he sends, so if you need something in a hurry he is a good choice. Of course over seas shipments will take longer if you are not in the USA where he is at:

https://sites.google.com/site/dtrlpf/home/flexdrives

When I started this post (edited to add more) I didn't intend on writing a full page on this diode and drivers, but I kept coming back to add more information. Just that I'm bored at work right now, nothing going on. For all I know, this information is elementary to you anyway
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

_______

Last edited by Alaskan; 08-08-2016 at 11:00 AM. Reason: called a boost driver a buck on accident.
Alaskan is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes




Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 06:06 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2016 Laser Pointer Forums, LLC