Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 09-07-2010, 08:19 PM #1
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default 445nm Dilda Direct Drive .. just for fun

My diodes arrived today .. so I had to test them right ? And I don't have any driver yet .. so I tried direct drive with 4.5V battery. Even if it held the voltage, it should work at about 1W .. but it dropped nicely to 400mA, thus estimated 200-300mW.
I used old broken dilda host, as it is easy to dismantle. I even used the 'red' lens. They actually reflect blue more then usual, but being low power I risked it.

Of course this is just for fun, I HAD to see the color, right ? I love how this blue scatters in the air .. and the purple glow around the dot .. beautiful ! Camera can't quite capture the colors.








Btw. I can confirm that these cheap glasses Focal price anti-green works great even on 445nm. I heard some people received them broken, or did receive different glasses, but if you get the right ones and intact, they just work. Except you won't enjoy the blue ! I must make some 200mW (diffusion safe) variant too.


__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review

Last edited by DrSid; 09-07-2010 at 09:00 PM.
DrSid is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 09-07-2010, 08:25 PM #2
kiyoukan's Avatar
Class 3B Laser
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
kiyoukan kiyoukan is offline
Class 3B Laser
kiyoukan's Avatar
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
Default Re: 445nm Dilda Direct Drive .. just for fun

very nice but very risky, but you should wait on a driver if you want it to live for a long time.
__________________
I have lots of lasers.
No point to list.
I have a projector small only 2.5W
I have other toys. What its plain and simple.
kiyoukan is offline   Reply With Quote
Old 09-07-2010, 08:30 PM #3
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

Why risky ? I'm aware of battery voltage peaks and ESD risks .. but I acted to minimize those. I know about back-reflection risk .. but IMHO there is less reflection from 'red' lens at this power then from 'blue' lens at 1.6W. I know about heat risk, but this is bottom of the diode performance envelope, and the host handles 200mW red diode quite nicely.
Did I miss something ?
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 09-07-2010, 08:33 PM #4
leukoplast's Avatar
Class 2 Laser
 
Join Date: Jan 2007
Location: Central Coast, CA
Posts: 368
Rep Power: 29
leukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant future
leukoplast leukoplast is offline
Class 2 Laser
leukoplast's Avatar
 
Join Date: Jan 2007
Location: Central Coast, CA
Posts: 368
Rep Power: 29
leukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant futureleukoplast has a brilliant future
Default Re: 445nm Dilda Direct Drive .. just for fun

The 445nm color is quite awesome. It almost appears to be two colors in one (blue and purple). Since the dot is blue, but all the diffuse reflections and beam appear to be purplish.

How well can you pick up the beam with your eyes? For me, the 445nm beam is very visible (even at 65mW during the day in a room). To me, a 50mW greens beam is slightly less 'bright' looking than my 65mW 445 beam.
__________________
- 150mW 405nm - DX 4171 host with Jayrob heatsink
- 115mW 405nm - Micro Chrome
- 100mW 405nm - Side button host

- 65mW 445nm - Jayrob chrome pen host (Link)
- 1+ Watt 445nm DTR NDB7875 in Mohrenberg side-clicky host (Guidesman) + heatsink
- 2+ watt 465nm DTR NUBM07E 510 threaded 22mm module
- 180mW 520nm DTR PLP520-B1 w/Jayrob heatsink in SolarForce L2T host
- 170mW 532nm - WL Evo (dead)
- 120mW 532nm - WL Fusion (dead)
- 50mW 532nm - Classic CNI pen

- 150mW 650nm - WL Chrome Pulsar
Plus various other low power reds, greens and violets.
leukoplast is offline   Reply With Quote
Old 09-07-2010, 08:39 PM #5
kiyoukan's Avatar
Class 3B Laser
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
kiyoukan kiyoukan is offline
Class 3B Laser
kiyoukan's Avatar
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
Default Re: 445nm Dilda Direct Drive .. just for fun

batteries can become unpredictable i know many people who want to remain nameless that are DD lots of their lasers and i just want to let you know that a battery after every charge if you are direct driving needs to be checked with a load that is not your laser on it to make sure its not doing anything funky.
__________________
I have lots of lasers.
No point to list.
I have a projector small only 2.5W
I have other toys. What its plain and simple.
kiyoukan is offline   Reply With Quote
Old 09-07-2010, 08:46 PM #6
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

It's rather visible .. the beam I made was rather thick (like 5mm at the aperture). For sure more bright then 200mW red, which has practically invisible beam. I did not compere it with green ones .. will do next time I feel like running it.
And the color is just cool. Red .. well .. they are cheap and direct .. good burners .. but everybody knows that color from LEDs or cheap 1mW pointers. Green is something special .. but the color is somewhat chemical, aggressive .. but this blue .. it's like from scifi movies.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 09-07-2010, 08:50 PM #7
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

Quote:
Originally Posted by kiyoukan View Post
batteries can become unpredictable i know many people who want to remain nameless that are DD lots of their lasers and i just want to let you know that a battery after every charge if you are direct driving needs to be checked with a load that is not your laser on it to make sure its not doing anything funky.
I would agree with that. But the battery I used is not even rechargeable. It's not even alkaline battery, and I knew it drops the voltage very fast. I was more afraid it would not lase at all. I discharged possible peak with fingers, and measured the battery several times to check how it holds. And I don't plan to really use it in this configuration.

Thanks for advice anyway !
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 09-07-2010, 11:44 PM #8
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

The main issue with driving direct, is controlling heat. If the diode is not heatsinked very well, it would begin to eat up more current in a form of thermal runaway.

I'm sure DTR knows the risks, but then again these diodes have been proven to be very hardy!
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball is offline   Reply With Quote
Old 09-08-2010, 11:24 AM #9
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

Hmm .. thermal runaway is interesting problem. It would be nice to measure it somehow, so it is predictable. Can this problem be estimated ? Is it worse or better or same as with red diodes for example ? I understand the experience with it must be pretty rare, as few people do direct drive.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 09-08-2010, 11:30 AM #10
Banned
 
Join Date: May 2010
Location: Australia
Posts: 1,362
Rep Power: 0
TTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond repute
TTerbo TTerbo is offline
Banned
 
Join Date: May 2010
Location: Australia
Posts: 1,362
Rep Power: 0
TTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond reputeTTerbo has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

this is no fair!!! how come mine died using a driver and 440mA
TTerbo is offline   Reply With Quote
Old 09-08-2010, 11:51 AM #11
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

That sucks man !

I did not kill any diode yet .. but sure I did kill many other sensitive parts. And I never knew what I did wrong. You follow all the rules .. and now it work, now it don't.
Gee I hope I'll not kill the diode with driver too ! Bad driver can be worse then wisely chosen battery.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 09-12-2010, 05:09 PM #12
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 153
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: 445nm Dilda Direct Drive .. just for fun

I tried to put the 445nm diode to the old dilda driver .. it works, but not really well. The driver cannot reach even 400mA, and I have to use rechargables which have larger voltage. I estimate the output under 50mW as it can't burn at all. Still it is nice small package, and I like the color.

EDIT: with fresh batteries is more like 100mW .. beam is nicely visible in dark.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review

Last edited by DrSid; 09-12-2010 at 07:47 PM.
DrSid 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








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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 09:19 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) 2017 Laser Pointer Forums, LLC