635nm correction optics GB

[tonyaztec]

Please don't forget to add me on for 4 optic mounts.

Thanks Tony

[andyf97]

Urm, that sounds like an great idea for low divergence but also for a very wide beam maybe 8mm.

[kiyoukan]

the beam gotten with these is 4mm with around a 1.1 or less mrad.
another member is doing his setp with the free set of 6x optics i gave him.
he should be posting soon.
im not to sure how you got 8mm i think you missunderstand how the optics work when you set them up.
i thought i had mentioned in the op the size and fl of each lens along with the pricer with a 50 unit order.
they are larger and are a 6x setup.
the larger sizes will allow for stability and ease of setup, due to them being larger they are mor forgiving than the smaller 3x setup that is currently sold.
with the smaller lenses being less than 1mm off will cause power loss as well as worse beam specs.
i found these just as quick as prisms as time for positioning and setup but with much better beam specs.
also like i have and 1 oth er member has you can cut the lenses in half and have 2 correction setups. i wont cut anyones due to the risk of if a cutting disk break i would be in trouble but if you cut your own you get 2 sets and if you do it right you wont damage the coating. i made a post about my cut lenses.
posted from mobile so sry if this is worded wrong.

[andyf97]

Both lenses are plano-convex?

the beam gotten with these is 4mm with around a 1.1 or less mrad.
another member is doing his setp with the free set of 6x optics i gave him.
he should be posting soon.
im not to sure how you got 8mm i think you missunderstand how the optics work when you set them up.
i thought i had mentioned in the op the size and fl of each lens along with the pricer with a 50 unit order.
they are larger and are a 6x setup.
the larger sizes will allow for stability and ease of setup, due to them being larger they are mor forgiving than the smaller 3x setup that is currently sold.
with the smaller lenses being less than 1mm off will cause power loss as well as worse beam specs.
i found these just as quick as prisms as time for positioning and setup but with much better beam specs.
also like i have and 1 oth er member has you can cut the lenses in half and have 2 correction setups. i wont cut anyones due to the risk of if a cutting disk break i would be in trouble but if you cut your own you get 2 sets and if you do it right you wont damage the coating. i made a post about my cut lenses.
posted from mobile so sry if this is worded wrong.

[kiyoukan]

http://www.photonlexicon.com/forums/...198#post224198
I still have one set of dual convex correction lenses if anyone wants them, but they will be 1 convex and one concave as this will reduce space.

[andyf97]

First lens plano-concave is a feasible and likely the best idea which will also give a cleaner beam, and going over some of my tests data from last year I think actually Kiyoukan is right about his measurements if it is exactly double DrLavas as in 2x3. Should give 4 x 1mm so you could if it is right put 8 diodes together pretty simply for a 4x4 beam.

Well right now cd beam im getting info for the concave lens, to replace the first convex.
The reason being is space. there is no need for the lenses to both be convex and have that point in the center as my tests showed that setup cant work.
This will shorten the distance a bit and make it take up less space.
Both will work just fine.
Attachment 30758
People were asking me if it could be made shorter as they did not want to dedicate that much room to correction optics.

[kiyoukan]

Yes i got the dual convex to try to knife edge in the middle of the correction optics with them all sharing the lase large c lens so that you could combine 4 diode without a pbs then if you wanted to you could combine 8 diodes with a pbs but that failed as trying to knife edge in the center of the correction optics on that super tiny thin beam was impossible and very very unstable.

[andyf97]

PM Sent to you.

Yes i got the dual convex to try to knife edge in the middle of the correction optics with them all sharing the lase large c lens so that you could combine 4 diode without a pbs then if you wanted to you could combine 8 diodes with a pbs but that failed as trying to knife edge in the center of the correction optics on that super tiny thin beam was impossible and very very unstable.

[andyf97]

http://www.photonlexicon.com/forums/...198#post224198
I still have one set of dual convex correction lenses if anyone wants them, but they will be 1 convex and one concave as this will reduce space.

What I suggest you do is edit your first post to be more clear so people know what the GB is for.

Example

ML..PXX beam correction expander (x6) kit V2
This GB is for two lenses,
( First lens "plano-concave" with its dimensions )
( Second Lens "plano-convex" with its Dimensions )
Lenses are coated for ???nm
And the price for kit not including postage.

Beam Measurements taken after optics for one diode only.
Beam Measurements taken after 10 meters for one diode only.
Beam Measurements were done at what mW of power
Your calculated divergence based on the above.

A setup diagram from CDbeam.

And a note to say the GB is for your two lenses only, mixing them up is confusing and if it works everyone will run to Dave anyway to buy the 2mm lens and mount..

And a list of the GB members here


You'll get more interest if you update one message with good details instead of running with answers on many pages.

If you want to sell Daves lenses or that mount then start another GB.

Oh by the way, an alloy mount is NOT going to work at all, alignment will shift with varying temperatures and that is a big no no for combining diodes even if you think your tests worked fine. You will not see this problem so easily in a space of 20 meters with two beams the same color.

[taggalucci]

Please count me in for 2 sets of the cylindrical lenses.