Laser projector power selection

[taggalucci]

...and if you're not projecting into an audience or hazardous area in your entire possible projection area, the only thing I believe you'd need is a secure means of ensuring the projector stays pointing in that same direction and that there are no reflective surfaces in the projection area.

I believe you'd still have to use a physical beam block/mask like Norty said if you were projecting into an area which partially included an audience or hazardous area. Though I'm not 100% sure whether the FDA/CDRH allows one to rely on just a Pangolin-style BAM or a BAM and simple scanfail combo instead.

I guess those in the US will know this one better than I.

[norty303]

...and if you're not projecting into an audience or hazardous area in your entire possible projection area, the only thing I believe you'd need is a secure means of ensuring the projector stays pointing in that same direction and that there are no reflective surfaces in the projection area.

Not so.

In the event of a scanner failure, it is entirely likely the galvo could 'droop' below the area defined by your projection zone. You'd still need the mask to prevent such occurrences.

[taggalucci]

Not so.

In the event of a scanner failure, it is entirely likely the galvo could 'droop' below the area defined by your projection zone. You'd still need the mask to prevent such occurrences.

Sorry I should have qualified that by "projection area" I did not mean projection zone i.e. a zone which could be smaller than the actual projectable area.

...Hence my 2nd paragraph and is what I meant by "entire possible projection area".

[drm916]

While I agree that beam block should be just as good.. I am not sure if that qualifies under the cdrh requirements. I thought the CDRH requirements mandated a scanfail device beam atteunation or a shutter. Maybe I read it wrong.

[taggalucci]

Again it depends on where the lasers pointing or can point.

I don't believe a scanfail is a generic mandatory CDRH requirement for a compliant projector. However, if you use it for shows with possible audience exposure, it may be one of a combination of tools to prevent harmful exposure.

A shutter is another tool, so are BAMs and masking/blocking. Depends on the application on each and every separate set-up.

[drm916]

I am in the US.. So there wont be any audience scanning. Just overhead beams.

[taggalucci]

I think the best way to think about it is as per the regs...

The projector must meet at least the minimum required criteria to be a certifiable product.

Each show must meet at least the minimum required criteria to be a safe show (which is itself a product though this is likely to vary more than the projector itself).

The measures you take to ensure safety usually are to meet one or the other. So an interlock, shutter, reset etc are about meeting the projector product requirements and scanfails, beam attenuation, masks etc are about meeting the show product requirements.

A good read of the standards should make this clear.

[alexhu]

Enough is OK and firstly the laser safety.

[drm916]

Enough is OK and firstly the laser safety.

Any more info about this on your website "ZR Laser Technology Model ZR-SG2 Laser Safety Board" . The description and link dont seem to be working right

[alexhu]

Any more info about this on your website "ZR Laser Technology Model ZR-SG2 Laser Safety Board" . The description and link dont seem to be working right

Very sorry, our English website is under contructing.So the info about products will uploads later and soon.Thank you for concerning us and our products continuely.