Old 03-29-2018, 06:08 PM #1
Junior Member
 
Join Date: Jun 2011
Posts: 11
Rep Power: 0
lazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond repute
lazylazer lazylazer is offline
Junior Member
 
Join Date: Jun 2011
Posts: 11
Rep Power: 0
lazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond repute
Default 510nm pointer for $19 legit?

A year or two ago the cheapest green laser diode pointer I could find was about $80.

Now I see a 510nm green laser diode pointer for $19.

Any idea if this is a legit deal?


lazylazer is offline   Reply With Quote


















Old 03-29-2018, 06:14 PM #2
RedCowboy's Avatar
Class 4 Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 5,950
Rep Power: 5848559
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 4 Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 5,950
Rep Power: 5848559
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

My laserlands pen is a direct 520nm, I do have laserlands larger silver host that takes 2 x 18350's and it looks like a 515nm, I also pot modded it.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 03-29-2018 at 06:16 PM.
RedCowboy is online now   Reply With Quote
Old 03-29-2018, 07:03 PM #3
Alien Laser's Avatar
Class 3R Laser
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,131
Rep Power: 2787457
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Alien Laser Alien Laser is offline
Class 3R Laser
Alien Laser's Avatar
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,131
Rep Power: 2787457
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

yes its legit i have also some like RedCowboy i have 445nm and 520nm in the same host
__________________
People Ask
Why wouldn't you point a laser at the sky?  - > I Say
Because the death star that is floating above earth secretly... may think of it as a challenge and shoot their laser at us in return.... Do you really want that?
_
This is what happen if you shine the laser at the ( UFO ) it may shine back as
( Alien Laser )
Alien Laser is offline   Reply With Quote
Old 03-29-2018, 07:42 PM #4
CurtisOliver's Avatar
Class 4 Laser
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 5,057
Rep Power: 6365369
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
CurtisOliver CurtisOliver is online now
Class 4 Laser
CurtisOliver's Avatar
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 5,057
Rep Power: 6365369
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

I have the same larger host from Laserland. They are legit. Good that you are questioning legitimacy.
__________________
Notable products/sites:

Jet Lasers offers various high quality Diode/DPSS Portables in their PL-E Pro hosts. Jet Lasers are known for their quality and are respected on LPF.
Jetlasers PLE Pro's

Dragon Lasers offers the best option for 589nm (Yellow) Laser pointers.
Dragon Lasers Yellow Laser Pointers

Sanwu are known to be very high quality and every newcomer should check them out.
Sanwu Home

Bang good is a good source for many electrical items and are often cheap and reliable.
Bang Good Home

For reliable safety goggles visit Survival Laser. Use LPF445 for a 10% member discount.
Eagle Pair Safety Goggles

For more sites and information please check out this thread.
Which company should I buy from? By Sta






Useful Links:
Wavelength to RGB Converter
CurtisOliver is online now   Reply With Quote
Old 03-29-2018, 09:28 PM #5
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 10,427
Rep Power: 6490243
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 10,427
Rep Power: 6490243
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

I got one too. It measures 510nm even though it is claimed to be a 520nm direct diode.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

473nm 50 mW BWB-10-OEM DPSS
477nm 127 mW 501B
488nm 135 mW EDC Sharp diode
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
493nm 120 mW 501B
502nm 110 mW 501B Lifetime
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
638nm 1 watt Cyprus II
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
Ocean Optics USB2000 Spectrometer
B&W TEK BTC100 Spectrometers X3
Scientech Vector S310 with AC2500 10 Watt LPM/ Hyperion 6 Watt & 20 Watt LPM/ Radiant X4 3.7 Watt LPM
paul1598419 is online now   Reply With Quote
Old 04-21-2018, 06:54 PM #6
Junior Member
 
Join Date: Jun 2011
Posts: 11
Rep Power: 0
lazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond repute
lazylazer lazylazer is offline
Junior Member
 
Join Date: Jun 2011
Posts: 11
Rep Power: 0
lazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond reputelazylazer has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

I ordered the $19 laser from laserland. It arrived after 3 weeks and is DOA.
Using a multimeter I see it draws 1A but no light comes out. When I contacted laserland, they told me to put the batteries in the opposite direction. I did, but of course that didn't work either. I already have three other laser pointers using the same host, so I know the correct battery orientation (negative to spring, positive to case). I'm still waiting for their next advice.

On the positive side, it is well packed. The pointer is in a hard case surrounded by foams pads placed inside a shipping box. Just wish they tested it before shipping.

What is the next least expensive green laser diode pointer that is more reliable?
lazylazer is offline   Reply With Quote
Old 04-21-2018, 06:58 PM #7
Merpie101's Avatar
Class 1M Laser
 
Join Date: Aug 2016
Location: Leadville, Colorado
Posts: 246
Rep Power: 381386
Merpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond repute
Send a message via Skype™ to Merpie101
Merpie101 Merpie101 is online now
Class 1M Laser
Merpie101's Avatar
 
Join Date: Aug 2016
Location: Leadville, Colorado
Posts: 246
Rep Power: 381386
Merpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond reputeMerpie101 has a reputation beyond repute
Send a message via Skype™ to Merpie101
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by lazylazer View Post
I ordered the $19 laser from laserland. It arrived after 3 weeks and is DOA.
Using a multimeter I see it draws 1A but no light comes out. When I contacted laserland, they told me to put the batteries in the opposite direction. I did, but of course that didn't work either. I already have three other laser pointers using the same host, so I know the correct battery orientation (negative to spring, positive to case). I'm still waiting for their next advice.

On the positive side, it is well packed. The pointer is in a hard case surrounded by foams pads placed inside a shipping box. Just wish they tested it before shipping.

What is the next least expensive green laser diode pointer that is more reliable?
last time i bought from laserlands i got a DOA laser too... so i made a post about it and then they did a giveaway for them for free and i never got a replacement
__________________
Add me on discord! Merpie101#8469

My collection:

337nm : ?mw retired (for now)
405nm : 20mw 1.3mrad
410nm : 500mw 3.6mrad
445nm : 1000mw 2.02mrad
532nm : 40mw 1.1mrad
532nm : 50mw 2.4mrad
589nm : 50mw (Coming soon this summer!)
632nm : 1mw ?mrad
632nm : 5mw ?mrad
635nm : 5mw 0.6mrad
638nm : 1000mw 4.4mrad (link)
650nm : 200mw 1.2mrad
650nm : 200mw 1.2mrad
(yes i got duplicate reds)
(my 650nms like to die alot )




Pocket LPM coming soon

495nm is best color
(edit: hey check it out 495nm is here! YAY!)

Stay medicated, my friends

Last edited by Merpie101; 04-21-2018 at 06:58 PM.
Merpie101 is online now   Reply With Quote
Old 04-21-2018, 06:58 PM #8
deadshadow's Avatar
Class 2 Laser
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 393
Rep Power: 2188749
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
deadshadow deadshadow is online now
Class 2 Laser
deadshadow's Avatar
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 393
Rep Power: 2188749
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by lazylazer View Post
I ordered the $19 laser from laserland. It arrived after 3 weeks and is DOA.
Using a multimeter I see it draws 1A but no light comes out. When I contacted laserland, they told me to put the batteries in the opposite direction. I did, but of course that didn't work either. I already have three other laser pointers using the same host, so I know the correct battery orientation (negative to spring, positive to case). I'm still waiting for their next advice.

On the positive side, it is well packed. The pointer is in a hard case surrounded by foams pads placed inside a shipping box. Just wish they tested it before shipping.

What is the next least expensive green laser diode pointer that is more reliable?

Same host doesn't mean same polarity,depends on each diode needs(if the diode is case positive,negative or neutral).you could fried your laser with wrong polarity very well,make sure to ask your supplier to be sure next time
__________________
Chris

custom builds
405nm 12x s06j 730mw
405nm bdr-209 920mw

445nm A-140 1.5A
445nm plb450 1.8w
455nm nubm08 4.2A (focusable with GBALL intact)
462nm ndb7675 2.2A
490nm Sharp GH04850B2G 190ma
505nm SharpGH05030C2LM 220ma
520nm pl520b 250ma (110mw G2)
520nm nugm01 1.3w

638nm mitsubishi ml501p73 1A(handheld tec cooled)
637nm Oclaro HL6388MG 410ma DIED
650nm 22x diode 400ma
lpc 840 390ma 300mw with G2

780nm from cdrw 165ma
LPM's:hyperion cuprum,pocket lpm v2
deadshadow is online now   Reply With Quote
Old 04-21-2018, 08:36 PM #9
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 10,427
Rep Power: 6490243
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 10,427
Rep Power: 6490243
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

I have been ordering from LaserLands for over 5 years with little, if any, problems. Deadshadow is correct, these pen laser all have different battery polarities and unless you know which it is for a particular laser, you will kill it by putting the batteries in backwards. That is not LaserLand's fault. If you don't know for certain, ask before you put the batteries in.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

473nm 50 mW BWB-10-OEM DPSS
477nm 127 mW 501B
488nm 135 mW EDC Sharp diode
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
493nm 120 mW 501B
502nm 110 mW 501B Lifetime
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
638nm 1 watt Cyprus II
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
Ocean Optics USB2000 Spectrometer
B&W TEK BTC100 Spectrometers X3
Scientech Vector S310 with AC2500 10 Watt LPM/ Hyperion 6 Watt & 20 Watt LPM/ Radiant X4 3.7 Watt LPM

Last edited by paul1598419; 04-21-2018 at 08:36 PM.
paul1598419 is online now   Reply With Quote
Old 04-21-2018, 11:54 PM #10
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,711
Rep Power: 1322773
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,711
Rep Power: 1322773
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Well, if it runs from standard AAA cells i'd say this is a bit of manufacturing fault or at least oversight, as it is -very- easy to design battery compartments in such a way that cells inserted the wrong way around cannot physically make contact with the electronics.

This approach is very standard in consumer electronics: if you try to put AA or AAA cells in the wrong way around they usually either don't fit at all, or make no electrical connection.

It would be different for a product running from say 18650 lithium cells which are also available without the 'nipple' on the positive side.
Benm is online now   Reply With Quote
Old 04-23-2018, 04:11 AM #11
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

It would be great if manufacturers would adopt a standardized battery scheme which is always followed. Basically the negative side of the battery should go towards the spring. Seems like most things follow this scheme, but every now and then you get some weird product which doesn't.
__________________

Razako is online now   Reply With Quote
Old 04-23-2018, 10:46 PM #12
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,374
Rep Power: 1034676
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is offline
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,374
Rep Power: 1034676
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by Razako View Post
It would be great if manufacturers would adopt a standardized battery scheme which is always followed.


__________________
A problem well stated is a problem half solved.
Cyparagon is offline   Reply With Quote
Old 04-23-2018, 11:58 PM #13
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by Cyparagon View Post
True lol
__________________

Razako is online now   Reply With Quote
Old 04-24-2018, 12:54 AM #14
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,711
Rep Power: 1322773
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,711
Rep Power: 1322773
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by Razako View Post
It would be great if manufacturers would adopt a standardized battery scheme which is always followed. Basically the negative side of the battery should go towards the spring. Seems like most things follow this scheme, but every now and then you get some weird product which doesn't.
There are some very good reasons why this is not done on -all- lasers.

One thing most have in common is that the housing also serves as one of the electrical connections (normally the spring/endcap one). In case of case-isolated diodes you can choose to follow the convention you mentioned without any problems.

However, there are some laser diodes that have their case connected to the -anode-, most notably 808 nm pump diodes for DPSS lasers. As the diode voltage is also pretty close but lower than the cell voltage (when using lithium at least, or 2 AA/AAA in series), the most practical solution is to have the case connected to the battery positive and use a low drop linear regulator on the negative side.

Sticking to the 'case must be connected to battery negative' would require a voltage inverting switchmode driver that would add nothing in effieciency but a lot in cost and complexity. The only other alternative would be to electrically isolate the laser diode from the pointer body, but that's something you really want to avoid because isolating something electrically usually also means a far worse thermal connection.

So no, it's not just stubborn people and standards, there is in some cases a very good technical reason for it... but you could still design the things such that they do not make physical contact if you have batteries with a nipple on them, or perhaps use a mosfet reverse voltage protection otherwise.
Benm is online now   Reply With Quote
Old 04-24-2018, 03:28 AM #15
Class 3B Laser
 
Join Date: May 2011
Posts: 4,107
Rep Power: 6435929
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Encap Encap is offline
Class 3B Laser
 
Join Date: May 2011
Posts: 4,107
Rep Power: 6435929
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by Razako View Post
True lol
Not to mention, who would create and enforce such a "Standard", especially on products like laser pointers all made in China and both illegal to import and sell in USA
Fat chance of that even if it made sense to do which it doesn't for real reasons mentioned above by Benm

USA FDA laws, rules, and regulations are more than enough.

A Battery orientation sticker might would solve the problem, if the manufacturer actually cared to solve it.

Last edited by Encap; 04-24-2018 at 03:33 AM.
Encap is offline   Reply With Quote
Old 04-24-2018, 03:44 AM #16
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,494
Rep Power: 1363350
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: 510nm pointer for $19 legit?

Quote:
Originally Posted by Benm View Post
There are some very good reasons why this is not done on -all- lasers.

One thing most have in common is that the housing also serves as one of the electrical connections (normally the spring/endcap one). In case of case-isolated diodes you can choose to follow the convention you mentioned without any problems.

However, there are some laser diodes that have their case connected to the -anode-, most notably 808 nm pump diodes for DPSS lasers. As the diode voltage is also pretty close but lower than the cell voltage (when using lithium at least, or 2 AA/AAA in series), the most practical solution is to have the case connected to the battery positive and use a low drop linear regulator on the negative side.

Sticking to the 'case must be connected to battery negative' would require a voltage inverting switchmode driver that would add nothing in effieciency but a lot in cost and complexity. The only other alternative would be to electrically isolate the laser diode from the pointer body, but that's something you really want to avoid because isolating something electrically usually also means a far worse thermal connection.

So no, it's not just stubborn people and standards, there is in some cases a very good technical reason for it... but you could still design the things such that they do not make physical contact if you have batteries with a nipple on them, or perhaps use a mosfet reverse voltage protection otherwise.
Oh, I wasn't suggesting that the batteries should always have the - to the tailcap. It was more that the spring should always go to the negative. Jetlasers are a great example of this, they're case positive but they have the nipple on the tailcap and the spring inside the laser. I do see how you might have an issue though, when dealing with a host that wasn't originally designed for laser use.

Quote:
Originally Posted by Encap View Post
Not to mention, who would create and enforce such a "Standard", especially on products like laser pointers all made in China and both illegal to import and sell in USA
Fat chance of that even if it made sense to do which it doesn't for real reasons mentioned above by Benm

USA FDA laws, rules, and regulations are more than enough.

A Battery orientation sticker might would solve the problem, if the manufacturer actually cared to solve it.
The bolded part is the real issue.
__________________


Last edited by Razako; 04-24-2018 at 03:46 AM.
Razako is online now   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



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 10:53 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC