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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 09-24-2011, 09:31 PM #1
Helioplasma's Avatar
Class 2M Laser
 
Join Date: Nov 2007
Location: United Kingdom
Posts: 529
Rep Power: 32
Helioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond repute
Send a message via MSN to Helioplasma
Helioplasma Helioplasma is offline
Class 2M Laser
Helioplasma's Avatar
 
Join Date: Nov 2007
Location: United Kingdom
Posts: 529
Rep Power: 32
Helioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond repute
Send a message via MSN to Helioplasma
Default EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics

Hello everyone, I'd like to repair this laser from LikeItBright.

OPTICS QUESTION : SKIP THIS POST (If you want to save time), AND GO TO THE NEXT REPLY.

However, it seems that he is majorly inactive by now (his last post was in 2010, although the last time he was here was just about a month ago, I have PMed him about three weeks ago, and have not recieved a message ever since), hence now I am asking you guys some advice.

I basically want to change the modules, because the one inside is broken.

I have very limited items at my disposal (you've got to thank this country for not being DIYers), but I probably can get ahold of certain tools such as soldering irons, antistatic wristbands, pliers and the such. My main concern is identifying if the module is press fitted or not, or some other obscure technique (like sorcery) I am unaware of which can not be remedied by simple tools.

For one, I am not sure how it is called the action of taking out the module from the host (don't know what to look for). I was wondering if special tools were needed. Also, if you notice the module (still in a anti-static bag) has a screw thread over it (see pictures below), whereas the complete laser itself doesn't show any sign of that threading. So could it be that the module is screwed in the host, and therefore I should use some pliers and remove it by twisting (in the widdershins direction) ? Or should I pull with brute force with that same tool ? Also, should I push or pull, or both, assuming the module isn't screwed in the host, but rather inserted ? I hope this question can be answered by people who have dealt with O-like green modules and the such. (Should it be taken out by some obscure method, I'll have to ask one of the guys here to do it for me :/)

Secondly, by looking at the pictures, you may notice that it is in a anti-static bag. Is it necessary to get an anti-static wristband ? Although I am not directly dealing with sensitive components, just the switch.

Finally, I am kind of guessing that the switch is to be shorted by connecting the A or/and B to C or/and D, amirite ?

Thanks for the help, and thanks for reading that fairly long text for those who are in need of time.

PS:: I would not want to rip of the circuit board from the brass diode housing (it looks pretty delicate considering how it is only connected by three solder joints). I am also unaware of the exact name of the host, but it is very similar to this one.
Attached Thumbnails
EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00530.jpg   EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00531.jpg   EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00532.jpg  


__________________
95mW infiniti - TO OLD !!! Hardly burns anything without good batteries. But nice as a pointer. Looking at NOVA lasers currently for a fresh new one.
125mW pulsar - Piece of 54!T, doesn't do anything. No burning power at all. But very beautiful as a laser pointer.
191mW ++ IgorT Romisen/CREE laser - This really kills your eyes (without goggles).
170-180mW LikeItBright Ultrafire laser - Works like a flashlight, but a beast up close.
200mW + LCC in police host By Moh. Nice red, and very cheap.
550mW Yobresal "Tiny Laser" - Incredible beam. This specific wavelength isn't really comfortable for the eyes though.
NOIR laser goggles OD 7+ for 180-534 nm Oemlasersystems

Other lasers not worth mentioning
TOTAL AMOUNT SPENT ON LASERS = 1065 $ AT LEAST (not much compared to some other people here...)
Always look on the bright side of lasers ------------------- not literally

Last edited by Helioplasma; 10-17-2011 at 09:36 AM. Reason: Update
Helioplasma is offline   Reply With Quote







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







Old 10-12-2011, 03:25 PM #2
Helioplasma's Avatar
Class 2M Laser
 
Join Date: Nov 2007
Location: United Kingdom
Posts: 529
Rep Power: 32
Helioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond repute
Send a message via MSN to Helioplasma
Helioplasma Helioplasma is offline
Class 2M Laser
Helioplasma's Avatar
 
Join Date: Nov 2007
Location: United Kingdom
Posts: 529
Rep Power: 32
Helioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond reputeHelioplasma has a reputation beyond repute
Send a message via MSN to Helioplasma
Default EDIT : Now need help with optics.

So I went on trial and error, asking help to PhD students who provided me some decent tools, because there was apparently no one that could help me through the internet, apparently.

Skip this part if you are in a hurry (story of my life) ------------------------------------------------------------------------------------

Using brute force worked. I did a pretty bad job at the soldering part, and shorted three parts of the four switch that didn't work, and melted bit of the circuit board in the process (soldering iron set at 270 Celcius, I thought 350 was too high, hence the solder took more time to melt than it took for the plastic circuit boards, as well as the switch connectors -_-)

But besides my terrible DIY skills, it lases properly, which is quite relieving as I did not use ESDs or proper stuff to hold the circuit board, the solder, and the wire and the iron (just blue tack).

--------------------------------------------------------------------------------------------------------------------------------------
Still no reply ?



Now my problem is, it seems again that I have terrible luck when it comes to laser modules. While the power output is good (indeed well over 100mW), the divergence of this is terrible. And in terrible I mean awful, and by awful, I am wondering if there is not a missing lens, because it just look like a green polarised flashlight. Because unlike the previous module (3.8mRad), the divergence is about 13mRad. The beam profile can be found in the attachments below.


Image description:
There is a sweet spot at around 5cm from aperture (BD@A < 0.2mm), beam diameter @ aperture is 0.4mm (it is very hard to get an accurate measurement, especially at the f.l, because at the focal length, the black markings on my ruler start smoking !). The divergence calculated by pseudo's 137 calculator is 13 +/- 0.15 mRad.

So now I am asking an optics question. As long as I know the location of the f.l of the laser, I can put a biconcave lens whose "imaginary" focal length equals the f.l from the aperture of the laser minus half of its thickness (i.e in this case, about 4.75 cm of f.l is required if the lens is to be positioned at the aperture, assuming a biconcave lens of 5mm in thickness). Am I right ?
Attached Thumbnails
EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-beam-profile.jpg   EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00557.jpg   EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00559.jpg   EDIT : Optics question / PICTURES ADDED, because a thread is worthless w/o pics-dsc00555.jpg  
__________________
95mW infiniti - TO OLD !!! Hardly burns anything without good batteries. But nice as a pointer. Looking at NOVA lasers currently for a fresh new one.
125mW pulsar - Piece of 54!T, doesn't do anything. No burning power at all. But very beautiful as a laser pointer.
191mW ++ IgorT Romisen/CREE laser - This really kills your eyes (without goggles).
170-180mW LikeItBright Ultrafire laser - Works like a flashlight, but a beast up close.
200mW + LCC in police host By Moh. Nice red, and very cheap.
550mW Yobresal "Tiny Laser" - Incredible beam. This specific wavelength isn't really comfortable for the eyes though.
NOIR laser goggles OD 7+ for 180-534 nm Oemlasersystems

Other lasers not worth mentioning
TOTAL AMOUNT SPENT ON LASERS = 1065 $ AT LEAST (not much compared to some other people here...)
Always look on the bright side of lasers ------------------- not literally

Last edited by Helioplasma; 10-17-2011 at 09:37 AM. Reason: pictures added
Helioplasma 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 10:13 AM.


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