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 06-19-2011, 08:40 PM #1
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
mikD mikD is offline
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
Default I've submitted to the Chinese

Hello everyone.
After my newest 445 diode fried within 10 seconds using the micro-flex-drive instead of a 'home-made' driver (which have always served me well until I over current the buggers on purpose and suffer the consequences). I realised (and this shows the psychology of lasers on the functioning brain and I have five science degrees, two post grad- no four post grad degrees and a doctorate so you'd think I'd be up there in the annals of critical thinking) that a LD costs around £35, plus the driver around £15 and then the casing which I make on a lathe, although I get the Al bar for free it must be around £15 plus the time it takes(£65 + tme). So why not buy a ready made for £75 which is guaranteed to work? I found a 1W 447 nm ready made at Dino_Direct (Honk Kong) which is now part of main land China, much to Lord Patten's chagrin.
Any how Dino Direct phoned me at midnight two days after the order was placed to tell me there would be a slight delay in delivery (I thought this was strange but a nice customer care advantage so I wouldn't give negative feedback). It then took a week for me to get the confirmation e-mail that it had been dispatched. I was worrying up till then about whether I'd been scammed. This is what lasers do to our brains. Why? They are just a process of the photo-electric effect and we suspend all rational thought about them at some level. Why do we buy them? I use them in my teaching (I am a physics lecturer and the teaching laser is a large 1 mW 653 HeNe laser) so I use them in the Michelson interferometer, the spectrometer and the speed of light measurement as well as demonstrating the photelectric effect. Well that is my excuse. Anyhow the laser arrived on Friday (I wasn't in) so I picked it up Saturday morning. It came with a charger I wasn't expecting that(?) but it needed an AC adaptor (a shaving plug worked well and cost £1 that same morning from the electrical supply shop). By the way, have I won the prize for the most usage of parentheses? So I was quite chuffed with the new 'tailor-made' laser I suppose I have been vanquished from the laser forums. I also paid for a haircut that same morning and I look like an old twat. I am writing this as I am watching 'Threads' (Dir Mike Jackson[him of Lord of the Rings fame]) about a nuclear war and what happens afterwards- very depressing. It is folks like us guys and gals who have skills which would be useful in a post apocalyptic world. So making lasers is a guarantee of our future. Stay focused people.
Attached Thumbnails
I've submitted to the Chinese-front-off.jpg   I've submitted to the Chinese-front-.jpg   I've submitted to the Chinese-label.jpg   I've submitted to the Chinese-rear-off.jpg   I've submitted to the Chinese-rear-.jpg  




Last edited by mikD; 06-19-2011 at 08:43 PM.
mikD is offline   Reply With Quote







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







Old 06-19-2011, 10:57 PM #2
rhd's Avatar
rhd rhd is offline
Class 4 Laser
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
rhd rhd is offline
Class 4 Laser
rhd's Avatar
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: I've submitted to the Chinese

Quote:
Originally Posted by mikD View Post
Stay focused people.
Oh the irony
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 06-19-2011, 11:29 PM #3
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Tech_Junkie Tech_Junkie is offline
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Default Re: I've submitted to the Chinese

You have to summarize better, and break it into more paragraphs, or not many people will read it. We call those "bricks". No one wants to read what is rolling off your mind.

Anywho, welcome aboard.
Tech_Junkie is offline   Reply With Quote
Old 06-20-2011, 02:22 AM #4
qumefox's Avatar
Class 3B Laser
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
qumefox qumefox is offline
Class 3B Laser
qumefox's Avatar
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
Default Re: I've submitted to the Chinese

For once I agree with TJ That.. is kind of hard to read.

I'm also surprised you killed a 445 with a microflex drive. Even failed they usually won't put out nearly the current it takes to kill a 445. Are you sure it wasn't really ESD? I've killed a few 445's just from handling them improperly.
__________________
Wavelengths in 'The Collection'
685nm, 655nm, 635nm, 589nm, 532nm, 473nm, 445nm, 405nm
qumefox is offline   Reply With Quote
Old 06-20-2011, 02:41 AM #5
rangedunits's Avatar
٩(̾●̮̮̃̾•̃̾)۶ __̴ı̴̴̡&
 
Join Date: Jan 2008
Location: Montréal, Canada
Posts: 3,588
Rep Power: 229
rangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond repute
Send a message via MSN to rangedunits
rangedunits rangedunits is offline
٩(̾●̮̮̃̾•̃̾)۶ __̴ı̴̴̡&
rangedunits's Avatar
 
Join Date: Jan 2008
Location: Montréal, Canada
Posts: 3,588
Rep Power: 229
rangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond reputerangedunits has a reputation beyond repute
Send a message via MSN to rangedunits
Default Re: I've submitted to the Chinese

Wall of texts arent welcome, coulnt make past first line
__________________
CRH-
rangedunits is offline   Reply With Quote
Old 06-20-2011, 05:42 AM #6
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Tech_Junkie Tech_Junkie is offline
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Default Re: I've submitted to the Chinese

Yeah Flexdrives are almost bullet proof. I dont think I've read of any doing damage to a diode, other than user error, or ESD related.
Tech_Junkie is offline   Reply With Quote
Old 06-20-2011, 05:52 AM #7
qumefox's Avatar
Class 3B Laser
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
qumefox qumefox is offline
Class 3B Laser
qumefox's Avatar
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
Default Re: I've submitted to the Chinese

I've had a bad flexdrive killing LOC's.. but never a 445. The one in question put out like a 1A pulse before before it started regulating when turned on.. I LED'd 4 LOCs before I figured out the driver was just bad.. I ran around in circles with that for hours rebuilding test loads and trying to figure out what was wrong... a 445 however.. will eat 1A for breakfast and want more.
__________________
Wavelengths in 'The Collection'
685nm, 655nm, 635nm, 589nm, 532nm, 473nm, 445nm, 405nm
qumefox is offline   Reply With Quote
Old 06-20-2011, 06:14 AM #8
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Tech_Junkie Tech_Junkie is offline
Banned
 
Join Date: Jan 2009
Location: In A State of Shock.
Posts: 11,871
Rep Power: 0
Tech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond reputeTech_Junkie has a reputation beyond repute
Default Re: I've submitted to the Chinese

I was talking about 445nm diodes...

Tech_Junkie is offline   Reply With Quote
Old 06-20-2011, 06:33 AM #9
ShortyInCanada's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Beautiful British Columbia
Posts: 617
Rep Power: 552
ShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond repute
ShortyInCanada ShortyInCanada is offline
Class 2M Laser
ShortyInCanada's Avatar
 
Join Date: Mar 2011
Location: Beautiful British Columbia
Posts: 617
Rep Power: 552
ShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond repute
Default Re: I've submitted to the Chinese

Well hello there to you.

I think that the advise is that large bricks of text are not usually read and for the most part not appreciated `round here. (I'm guilty of the same offense.)

Everyone here deals with "light speed" and therefore their attention spans are rather quick too. (It's a joke guys...don't tear me a new one...yet)

It seems that you might be an interesting knowledge base for us all. Just as long as you can keep the explanations short and, for a lack of a better term at this moment, simple.
ShortyInCanada is offline   Reply With Quote
Old 06-23-2011, 12:50 AM #10
blue bumblebee's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Vancouver, Canada
Posts: 815
Rep Power: 162
blue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond repute
blue bumblebee blue bumblebee is offline
Class 2M Laser
blue bumblebee's Avatar
 
Join Date: Mar 2011
Location: Vancouver, Canada
Posts: 815
Rep Power: 162
blue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond reputeblue bumblebee has a reputation beyond repute
Default Re: I've submitted to the Chinese

oh wow
you got the dino direct "group buy coupon" laser!
how is it?
want to write up a review later on?
blue bumblebee is offline   Reply With Quote
Old 06-23-2011, 03:15 AM #11
Ash's Avatar
Ash Ash is offline
Class 3R Laser
 
Join Date: Mar 2009
Location: Samadhi
Posts: 2,073
Rep Power: 143
Ash has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond repute
Ash Ash is offline
Class 3R Laser
Ash's Avatar
 
Join Date: Mar 2009
Location: Samadhi
Posts: 2,073
Rep Power: 143
Ash has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond reputeAsh has a reputation beyond repute
Default Re: I've submitted to the Chinese

Quote:
Originally Posted by mikD View Post
..
I have five science degrees, two post grad- no four post grad degrees and a doctorate
...
__________________
Ash is offline   Reply With Quote
Old 06-23-2011, 07:02 PM #12
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
mikD mikD is offline
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
Default Merged 3 consecutive posts

Yeah, sorry about the paragraphs (lack thereof). The flex drive was the one recommended here, I followed the link.

I am happy with my 'tailor made' much cheaper than the Arctic. I my make an outer shield so it looks cooler.

I also tried the flex drive on a UV LED, It also died, so maybe there was a short somewhere on the IC?
I should have stuck with making my own as I always do and mount them on a fan cooled CPU heat sink (see images on my other posts)

Quote:
Originally Posted by blue bumblebee View Post
oh wow
you got the dino direct "group buy coupon" laser!
how is it?
want to write up a review later on?
Yes sure. It is quite decent quality, I don't know what the output power is but it is compatible with the other 'home mades' I've had.
Any suggestions on how to estimate out-put power?

Last edited by daguin; 06-23-2011 at 08:32 PM.
mikD is offline   Reply With Quote
Old 06-23-2011, 08:06 PM #13
qumefox's Avatar
Class 3B Laser
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
qumefox qumefox is offline
Class 3B Laser
qumefox's Avatar
 
Join Date: Mar 2010
Location: Jackson, TN
Posts: 3,234
Rep Power: 173
qumefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond reputequmefox has a reputation beyond repute
Default Re: I've submitted to the Chinese

I'm not sure where you get 'tailor made' from. The laser in question is a mass produced chinese laser. Dino direct doesn't make lasers. They're just a reseller/drop shipper. I can get this same laser from the same people I get my lenses from as well, and most other large chinese retailers have them as well.
__________________
Wavelengths in 'The Collection'
685nm, 655nm, 635nm, 589nm, 532nm, 473nm, 445nm, 405nm
qumefox is offline   Reply With Quote
Old 06-24-2011, 02:40 AM #14
InfinitusEquitas's Avatar
Class 4 Laser
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
InfinitusEquitas InfinitusEquitas is offline
Class 4 Laser
InfinitusEquitas's Avatar
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
Default Re: I've submitted to the Chinese

Personally I don't mind the bricks, but than I enjoy reading

I thought the post was quite funny, but staying on focus is not something you do well. I assure you, your students think you're which isn't a bad thing

If you're a physics lecturer at any kind of decent university... getting to an lpm shouldn't be difficult at all.

A detailed review would be nice

Edit: Visually telling apart lasers is a bad idea. Difference of <200mW with high powered lasers is hard to notice.

Last edited by InfinitusEquitas; 06-24-2011 at 02:43 AM.
InfinitusEquitas is offline   Reply With Quote
Old 07-12-2011, 04:01 PM #15
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
mikD mikD is offline
Junior Member
 
Join Date: Apr 2009
Posts: 13
Rep Power: 0
mikD is on a distinguished road
Default Re: I've submitted to the Chinese

Quote:
Originally Posted by InfinitusEquitas View Post
Personally I don't mind the bricks, but than I enjoy reading

I thought the post was quite funny, but staying on focus is not something you do well. I assure you, your students think you're which isn't a bad thing

If you're a physics lecturer at any kind of decent university... getting to an lpm shouldn't be difficult at all.

A detailed review would be nice

Edit: Visually telling apart lasers is a bad idea. Difference of <200mW with high powered lasers is hard to notice.
Aha. I am currently at an FE college and getting a tenner for lab books is an epic struggle. However we do have a reasonably stocked electronics prep room where most projects are done.

I have used a luxmeter to measure the reflectance from a plain 2mm glass slide. Now that should be 4% of the incident light an then turning lux into Joules and taking account of the meter's frequency sensitivity and B-V characteristics (which are not given) would be one indirect way of measuring an approxomation.

As for a review:
It came in a cardborad box (red) with a foam sectioned inner snuggly surrounding the components.
It also came with a charger (this requires a shaving plug adapter for UK sockets). It is powered by a 3.7 V 18650 2000Ah LiON battery (rechargable).
The laser is in three basic sections, Head focuser, body and cap with push on/off selector.

See image:

So it can stay on, although not recommended for more than 30 seconds.

The battery arrived charged.
The design is the same but finish is similar to the 'group buy' one advertised at top of page. Mine is an anodised Navy Blue.


The focus gives a wide range of divergency, not much use and only a small turn for spot focus. They claim spot size is 5 cm at 20 metres. I think it is more than 20 cm, so not much use in astronomy (the green ones are the best anyway).


The power is enough to blast through most plastic within a few seconds.
It will ight cigarettes, burst balloons etc. It is very bright, as seen in earlier pictures.
I have taken some images (using an auto CCD) using the laser with a Michelson Interferometer and an analogue of an optic fibre and a diffraction grating.

It floods the picture but you get the idea.

The laser head does get hot after 30 seconds so be careful of long use. I never got round to cooling it in LQN2, although I made lots of ice cream with it.
Attached Thumbnails
I've submitted to the Chinese-tm-445_03.jpg   I've submitted to the Chinese-interfer.jpg   I've submitted to the Chinese-optic.jpg   I've submitted to the Chinese-otheroptic.jpg  
mikD 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