Advice for 405nm Laser Polygon Mirror Scanning Device

[VDX]

... you can "adjust" the f-theta by placing a focussing lens between the diode and the f-theta - the "dirstortion" (or better "correction") depends on the lense's FL

Viktor

[rajhlinux]

... you can "adjust" the f-theta by placing a focussing lens between the diode and the f-theta - the "dirstortion" (or better "correction") depends on the lense's FL

Viktor

Will look into that.

[Lasertize]

here is a link that might be helpful in your project
https://www.edmundoptics.com/knowled...-stock-optics/

[buffo]

You may want to reach out to Semrock. They have a wide selection of optical coatings and they will also do custom coatings in small lots.

I worked with them a long time ago to create some custom dichros with a very narrow cuttoff to allow mixing of 642nm red with 660 nm red. I suspect they'd be able to create a custom-coated F-Theta lens for you that would be appropriate for 405 nm, even in lots of 1 to 4 pieces, but I will warn you that they aren't cheap...

Adam

[rajhlinux]

You may want to reach out to Semrock. They have a wide selection of optical coatings and they will also do custom coatings in small lots.

I worked with them a long time ago to create some custom dichros with a very narrow cuttoff to allow mixing of 642nm red with 660 nm red. I suspect they'd be able to create a custom-coated F-Theta lens for you that would be appropriate for 405 nm, even in lots of 1 to 4 pieces, but I will warn you that they aren't cheap...

Adam

Looking for a professional company that can make custom lens, specially for ordering few pieces for prototyping.

It's bizarre how f-theta lens like the ones found in laser printer are almost nonexistent in the optic industry, I guess it's specifically for custom made products.

I'm thinking it would be much better (saving time and possibly money) by just ordering the "common" f-theta lens which is found everywhere on eBay and it's used by galvo multi axis laser scanning.

Problem is, I need the scanning laser spot size to be accurate to 0.01mm. Is this even possible to achieve from f-theta lens?

Thanks.

Edit: HOLY MOLY... You have over 2 Billion posts....

[laserist]

https://www.silloptics.de/produkte/l...heta-objektive

[rajhlinux]

Take a look at this laser scanning project:

https://hackaday.io/project/21933-op...solution-laser

It utilizes a transparent prism rather than a polygon mirror.

The good part about this is that it can provide high resolution straight out from the box... no f-theta lens is needed.

Guess I will have to spend a week or two, to fully understand the workings of this project since it's more cost effective and no special expensive lens is required down the road (hope I'm right).