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Old 10-12-2014, 06:21 PM #1
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Default Cylindrical lens pairs, correction optics, anamorphic application

Hello Guys! Special discound for LPF members comparing to Ebay price


Each lens pair is 65USD + 5 USD shipping worldwide.

For larger quantity a discount will be applied
If you have any question or need more info/photos, feel free to ask





First pair is dedicated for red Mitsubishi/Oclaro diodes, 1W 520nm NDG7475 and 3,5W 445nm NDB7A75 diodes.

Second pair is dedicated for 445nm popular diodes 1 - 2,5W and also works well with NDG7475 1W 520nm.




Lenses dimensions are 12mm x 12mm and 5-7 mm thick.
Lenses are AR coated for whole visible spectrum 400 - 700nm.
Extraordinary visible light transmittance >99,7% proved with AR test shown below.




>99,3% light transmittance for whole pair!




Below there are photos with the results of measurements for several laser diodes.

Every photo was made at 10 meter distance between the wall and lenses.


Starring: First cylindrical pair and Oclaro HL63193MG 700mW 638nm:







Starring: First cylindrical pair and Nichia NDG7475 1W 520nm:







Starring: First cylindrical pair and Nichia NDB7A75 3,5W 445nm
I have only "after lens" shot, without lens the beam spot is almost the same as the Oclaro's one.







Starring: Second cylindrical pair and Nichia NDB7875 1,6W 445nm:







Starring: Second cylindrical pair and Nichia NDG7475 1W 520nm:








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Last edited by Tomorrows System; 10-13-2014 at 02:15 PM. Reason: Adding more information
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Old 10-13-2014, 01:01 PM #2
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

At what distance were the tests performed?

Also do you sell some sort of mount? How hard is it to align?
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405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

5W Ophir LPM

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Old 10-13-2014, 02:13 PM #3
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

Distance from lens to the wall was 10m +-0,5m

It is harder than with anamorphic prisms, but also the output power is way better.

For the FIRST pair working with 3,5W 445nm mounted in my 4W laser module. The distance between the lenses is 19,5mm and the outside dimension for both lenses is 33mm.

Setting the lens:

1. U need to put one lens (concave) and see stright line, not bend line. This is the easiest. Also beam should be placed in the center of the lens, but this can be set approximately using eye. I'm doing it while the 10 minutes glue is drying.

2. Now you have really wide line on the wall. You need to take second lens and set it in 2 axis; turn and the distance between.
Distance between lenses is responsible for beam spot size.
Turn is responsible for S effect. I attach photo.
Conceptual design of anamorphic prisms on sinner focus ring. Pix!

When I was setting first pair I used just alluminium flat. But I found that it is easier when you have sry square,valley for the lens or just something glued on the plate to have stright line.

I already set around 4-5 pairs and now I think it is not very hard. But you need some patience wiht the first one
Attached Thumbnails
Cylindrical lens pairs, correction optics, anamorphic application-lens-setting.png   Cylindrical lens pairs, correction optics, anamorphic application-lens-setting2.png  
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Old 10-13-2014, 05:45 PM #4
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

Ooh, how I do want.
The price would have to come down quite a
bit, though for me to be able to afford
I am seriously poor.
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Old 10-13-2014, 05:48 PM #5
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

On ebay they are selling for 95 USD :P I will think about price drop but a bit later. They cost me a lot because of this AR coating.
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Old 10-13-2014, 08:56 PM #6
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

I suggest offering this discount on PhotonLexicon- a lot of them are "projector guys" if you will, and the market for these lenses is much more prevalent over there.
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Old 10-13-2014, 09:03 PM #7
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

I already made a thread, but I think I will make another one for group buy. Thanks for the info anyway
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Old 10-14-2014, 02:36 AM #8
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

Well, when I receive my sample set....I will mount to the V7 versioin of the EZ mount. Will show a comparison between the A-prism's and C-Lenses. See attached pic.
I believe this design will work. Then we will go from there. Still looking for a Ally tube cover....not that this is needed for the optics to work, but a cover, clear acrylic or Aluminum will protect and help keep the optics clean.
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Old 11-17-2014, 03:57 PM #9
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

Hi,
Please could you detail what lens are using as a collimator also Cylindricals EFLs?
By the spots sizes, I suppose its G2 or 3-elements... isn't it?
thanks!
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Old 11-17-2014, 05:48 PM #10
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Default Re: Cylindrical lens pairs, correction optics, anamorphic application

Hi, I was using three element lens. This is why I show pictures before and after.

Cylindrical lens will always work the same no matter what lenses you use. Even if you use asphericsl 2mm EFL. It will just change the divergence x times and also make the beam wider at the output x times. This is why you do not need EFL of the cylindrical lens.
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