Did you see this kind of moving head mirror?

[gagalight2011]

Hello Guys,

We have one kind of moving head mirror now: one side is reflex mirror, one side is grating effect.

Do you think it is good for laser show ?
https://www.youtube.com/shorts/WM_vk4lKyjI
https://www.youtube.com/shorts/uqjqe0ryKLI

If you want to know more information,then please check follow link:
https://www.gagalight.com/products/m...-reflex-mirror

[TheHermit]

Interesting.
Reminds me of some things we did back in the good ole days of expensive ion gas, using solenoid activated, beam redirect mirrors, which were located inside the projectors because they didn't drift like open loop galvos.
Bounce mirrors (sometimes with diff gratings) were placed around the venue to create static beam sculptures.
But, with today's low cost diodes and galvos, my initial thought is, "Why not simply modify that gimbal use a small RGB projector, similar to a Laser Cube, instead of just moving a single beams around?"
Oh yeah. That's already being done, isn't it?
JS
BR
Roj

[gagalight2011]

Interesting.
Reminds me of some things we did back in the good ole days of expensive ion gas, using solenoid activated, beam redirect mirrors, which were located inside the projectors because they didn't drift like open loop galvos.
Bounce mirrors (sometimes with diff gratings) were placed around the venue to create static beam sculptures.
But, with today's low cost diodes and galvos, my initial thought is, "Why not simply modify that gimbal use a small RGB projector, similar to a Laser Cube, instead of just moving a single beams around?"
Oh yeah. That's already being done, isn't it?
JS
BR
Roj

yes. it has done already. Sometimes, the people use reflex mirror in lasershow. So I think it will be different when add grating effect.

[TheHermit]

yes. it has done already. Sometimes, the people use reflex mirror in lasershow. So I think it will be different when add grating effect.

Personally, if the price is right, I'd be interested in just 2 linear diffraction mirrors to create an overhead net effect. Then I would add my own DIY stepper motors, remotely controlled via ESP32 MCUs over WIFI, to slowly move the beam nets horizontally. Nice as a single effect, used very sparingly, but nothing more.
IMHO, this is about all that would be legally allowed in the USA & most Western markets for Class IV show lasers. Granted, since it is only a motorized mirror, without lasers, the device wouldn't need a variance to be sold. But, using it to reflect lasers during public shows is another matter, because all laser beam paths must be predefined and approved by local safety authorities.
For example; the dual axis diffraction grating could easily be directed into audience areas, unless 'safe zones' can be programmed into the gimbal.
Without scan fail protection, the exposure levels would likely exceed regulatory limits, especially for the mirror.
It appears that you're avoiding harmful exposures levels by using fat beams with high divergence. Perhaps it would comply with safety regulations if the light source were LED, instead of lasers.
On the other hand, an RGB laser projector with galvos can safely produce unlimited different effects, with scan fail protection and the right software can be programmed with safe zones, in order to avoid areas where audiences are located.
I don't mean to discourage your efforts, but only pointing out some of the obstacles that you and your Western customers need to overcome.
Best regards,
Roj