40mW Sanyo 635nm LDs on Ebay

• Nov 29, 2010

• #1

netwave

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Just found these 635nm 40mw Sanyo LD's on ebay that maybe of interest to some of you!

Sayno DL-6148-030 635nm 40mW Red Laser Diode on eBay (end time 22-Dec-10 12:37:42 GMT)

They are listed at $50USD each buy it now, however I put in an offer of $20 & got accepted bargain
I think these would of sold quicker if the seller had listed them as Sanyo not Sayno lol
Here's the tech spec http://www.photonic-products.com/products/laserdiodes_visible/sanyo/dl-6148-030.pdf

 

• Nov 30, 2010

• #2

midias

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Looks like they took my offer for $20 as well. I guess time for another pen build i am thinking to-92 lm317 with 2 AAA sized lithium.

 

• Nov 30, 2010

• #3

Blord

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Great find, what is the nominal current for 40mW ?

***nevermind*** I look for myself on that pdf file

 

Last edited: Nov 30, 2010

• Nov 30, 2010

• #4

midias

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Ok I just finished my micro lm317 driver for ~ 100ma really about 96 but it will fit in a pen and that is what I care about.

 

• Nov 30, 2010

• #5

Grix

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40mW 635nm should be as bright or brighter than 200mW 660nm right? Also, are these single mode?

 

• Nov 30, 2010

• #6

andy_con

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Grix said:

40mW 635nm should be as bright or brighter than 200mW 660nm right?

Click to expand...

no, you would need like half as much 653 than 660.

so 100mw of 635 would be as bright as 200mw of 660

 

• Nov 30, 2010

• #7

Cyparagon

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According to the CIE tables, 660nm is 40lm/W, and 635 is 140lm/W. So about 40mW of 635 should be as bright as 130mW of 660.

 

• Nov 30, 2010

• #8

chipdouglas

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what about the peceived brightness. in my scanner i will be using 2 LOC's that are about 250mw. so after combining and other loss will see hopefully 400-450mw. but will that 660@ 450mw be brighter to the eye than 200mw of 635?


michael.

 

• Nov 30, 2010

• #9

andy_con

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Cyparagon said:

According to the CIE tables, 660nm is 40lm/W, and 635 is 140lm/W. So about 40mW of 635 should be as bright as 130mW of 660.

Click to expand...

what computer programs say and what you see in real life are very different

 

• Nov 30, 2010

• #10

Grix

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andy_con said:

no, you would need like half as much 653 than 660.

so 100mw of 635 would be as bright as 200mw of 660

Click to expand...

Really? This review says 640nm looks about 2.5 times brighter than 660nm, and 635nm is even brighter..

http://laserpointerforums.com/f52/640nm-dpss-portable-short-review-55495.html

 

• Nov 30, 2010

• #11

andy_con

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stand in a dark room filled with smoke and scan 40mw of 635 and 200mw of 660. im pretty sure i know which one would look brighter.

but hey thats just my view

 

• Dec 1, 2010

• #12

aryntha

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hmm. Anyone have any idea what would be a good driver to use for such a low current diode? 40mW of 635 is.. -- well lets say my 25mW of 633 is QUITE bright. This should be.. nice.

 

• Dec 1, 2010

• #13

DJNY

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This one should be fine
http://laserpointerforums.com/f64/micro-drive-laser-driver-rkcstr-22553.html#post359548

I love 635nm, nice price here. If my 632nm deal fails, I go with this one here.

 

• Dec 1, 2010

• #14

Blord

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He is not a regular laserdiode seller. Looks more like bulk buyer of electronic and optical stuff. I just made a deal for $22,50 including shipment.

I want to try with a mini-LM317 in a penhost.

 

Last edited: Dec 1, 2010

• Dec 1, 2010

• #15

midias

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aryntha said:

hmm. Anyone have any idea what would be a good driver to use for such a low current diode? 40mW of 635 is.. -- well lets say my 25mW of 633 is QUITE bright. This should be.. nice.

Click to expand...

I am using a lm317 driver with smt components 2 AAA sized lithium batteries and a pen host

 

• Dec 1, 2010

• #16

midias

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~ size on a nickle should fit no prob in the pen maybe even in the aixiz and will provide a stable 100ma. I even fit some decent capacitance on there .1uf on IN and OUT and 22uf on the OUT with reverse diode protection.