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Circular Laser in a wall

machinevision

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Hi,

I search a solution for optics to show a green laser cycle on a wall (see attachment) from ~30 - 40m distance.
The cycle i want to have a ~2m diameter in distance to ~30 - 40m.

It is possible this?
It is possible to have adjustable cycle diameter with optics?

I dont want in this time to build or buy a laser show and i search for a solution with optics instead galvo motors.

I have a 303 green laser pointer.

My general need is to be able to show in a wall simple geometric shapes with low cost if it possible.
 

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diachi

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Hi,

I search a solution for optics to show a green laser cycle on a wall (see attachment) from ~30 - 40m distance.
The cycle i want to have a ~2m diameter in distance to ~30 - 40m.

It is possible this?
It is possible to have adjustable cycle diameter with optics?

I dont want in this time to build or buy a laser show and i search for a solution with optics instead galvo motors.

I have a 303 green laser pointer.

My general need is to be able to show in a wall simple geometric shapes with low cost if it possible.
https://www.edmundoptics.com/resources/application-notes/optics/an-in-depth-look-at-axicons/
 

machinevision

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Interesting, thanks for the link.
The end result i want is similar to laser_1.jpg attachment. laser_1.jpg is from laser show machine.
Τhe cost for lens is not small, it is compared with the cost of build a laser show.

Is the only solution for geometric shapes with optics?
Can i have other shapes with lower cost?

For example, i try to rotate a small mirror with tilt and the result in not bad (laser_3.jpg ). The frame in not complete cycle because the speed of rotation is too low. I prefer a solution without moving parts.
 

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machinevision

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Have you considered a white board?
Yes, but my needs is to show visible light source in a daylight outdoor, from ~40 meters.

Or if that's too simple/not functional enough, a video projector.
Outdoor, in daylight is difficult to have a large projector to show me a strong and visible geometric shape. See laser_4.jpg, is a processed image frame from my camera. Ιf it does not have a strong light source it can not process properly.
Video projector is not a choice :(



From my view the best solution is a small and mobile laser show or a laser pointer with optics.

I found this:

https://www.researchgate.net/publication/280066115_A_simple_method_to_fabricate_an_Axicon_for_ring_shaped_laser_beam_generation

https://www.lasercomponents.com/de-en/news/shape-your-laser-beam-into-a-ring-profile-1/

If understand well, something like this (https://www.alibaba.com/product-detail/Optical-Laser-Shook-Jong-Conical-lens_60049594065.html) converts the laser beam to the circle?
 

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