Chinese lasers wavelenght true?

[borgqueenx]

I want to know if the 650nm lasers from chinese arnt usally 658 in reality?
Im getting a 658nm laser module soon...want to know if its darker then the 650nm module i had some time go.

thanks.

 

[Lotus_Darkrose]

From where and what one?

 

[borgqueenx]

i had this some time ago:
DPSS Laser,Green laser,Blue lasers,Red lasers form Lasever

the module im now getting certainly has 658, but i probaly will replace those with 637 or 638 sometime.

 

[Cyparagon]

All the "650s" I've measured were 660-664nm with the exception of a $1 pointer at 655nm.

 

[borgqueenx]

Hmm so its a gamble^^

 

[lasersbee]

Reading the data sheet I see 650nm +/-5nm...
645nm to 655nm...

Whether that is true when actually testing that
Laser remains to be verified..


Jerry

 

[Deleted member 16589]

I'm not sure why the wavelength is so important I don't think +/-5nm is noticeable tho i could be wrong.

However i don't know if this helps but i ordered a 10mW 473nm unit 2 years ago and it was too spec power wise.

when I metered it it had a 17mW peak then stabilized at about 11mW and its still working great today. The review is linked in my Signature if it helps.

 

[Cyparagon]

The difference in color isn't much, but the difference in brightness is.

 

[snoutke]

lasersbee, do you sell spectrometers as well?