trance energy

[SideFX]

iv got a large concern of the power of the lasers used on the main stage.

Are you sure the damage is from the lasers? In the movie I see it braking just at the point when those darn strobo's kick in.. damn I really hated those.. flashing in my eyes.. it really gave me a headache. I took some direct hits from the lasers but that didn't bother me as much as the strobos did.

[JeroenVDV]

I've been expecting this for years..

Laser power is getting higher and higher on parties, and as you can see at the posted video, there are 13x 10W 532nm lasers (OK, not running at full power) with VERY low divergence (OPSL) scanning the audience from less than 20m distance with very dangerous beam-frames.......

Is there still ANYBODY here thinking there are calculations being done for those shows?

[JeroenVDV]

Are you sure the damage is from the lasers? In the movie I see it braking just at the point when those darn strobo's kick in..

At that same moment the laser-frame changes into a small-beams-frame...

[oliverst14@hotmail.com]

no im not 100% which is why im asking for if anyone know anything about digital cameras. the only thing i know is that 13 10w lasers is alot of laser power and they were not just at the front. they were all the way down the rigging.
i need some futher advice on why this has happened.
i can say though i filmed other videos with the strobes constantly strobing and the large crowd surges going off and nothing happened. the only time it broke was when the lasers were on.

its my opinion that the lasers caused this but if anyone has other theories please tell me. this shouldnt happen and i want to find out who i can blame as to fnd out if my warranty on the camera is valid cause if it aint i want a refund of someone else.

cheers ollie

ps the lasers did look amazing tho

[oliverst14@hotmail.com]

At that same moment the laser-frame changes into a small-beams-frame...

i noticed this too which is why i thought it was the lasers

by the way really nice parcan setup mate in high contrast. loved the side walls and it spelling out high contrast

ollie

[SideFX]

At that same moment the laser-frame changes into a small-beams-frame...

Yeah I also figured it would be to much of a coincidence if was caused by the strobo's..

This is quite disturbing indeed.. I always thought laser-image, being an ilda member, did all their calculations, and always made _sure_ no harm can be done.. they can't afford a scandal as with the russian 'Aquamarine' incident

Maybe you could contact laser-image and show this footage.

[heroic]

From a careful analysis of the damage pattern on your broken sensor and what was being recorded just prior to the failure, it looks like the combination of the strobes and one of the lasers is what killed it. It looks like a patch of the sensor has melted and shorted the substrate to the sensor later.

This doesn't actually mean necessarily that the show was not eye-safe. Human eyes are actually less vulnerable to damage than modern small-chip image sensors (they tend to have less efficient lenses, focussing the light on a larger area, and they are liquid cooled).

Still, it's cause for concern, and I'd want to ask the laser company some serious questions about the eye safety; they have multiple intersecting scans on multi-watt lasers that coincide with massive banks of multi-kW strobes. The luminous flux levels available are difficult to compute but they are doubtless many times higher than the camera was designed to tolerate.

I've attached some images. They are the image immediately before the sensor failed, the image during the failure, and the first image after the failure. In the image before the failure, it is clear that the sensor is being irradiated by almost a complete field of saturated white, indicating that the entire sensor was being heated by the conventional lighting. In the frame where the failure occured, it is clear that there is a locus of disturbance at the position of a particular laser scan head which happens to be swamped in saturated white; some sensor cells have gone dark, indicating that they are no longer charging during the refresh cycle. In the frame after the failure, you can see lines emanating from this position indicating that whole rows and columns are shorted, and a physical insult has occurred to the sensor.

[oliverst14@hotmail.com]

heroic

thank you for your breakdown of what u think happened. i do want to get in touch with them but iv emailed them previously to this and they never got back to me. i was wondering if anyone had a new contact email for them?

i got the hugo@laserimage one

cheers ollie

[keeperx]

I believe (not to be rude) that the owners manuals warn of this type of damage. They say that damage may occur due to extreme light.

And im also not sure if the laser company or the production company or the venue, would be financially responsible.

I will say this in defense of lasers, (in the US) It is up to the owner of a device to guard it from harm. You can not sue Disney World because your cell phone was damaged on splash mountain. SO im not sure what Hugo could do for you.

[oliverst14@hotmail.com]

i do understand that keeperx but i dont think its the same at all. iv read the manual and there is nothing about extreme light, and flooding the thing with water is obviously going to damage you camera, pointing it at something and recording is what its designed for and thats exactly how i used it. if id thrown it into some water then its not its intended use but recording is.

i just think that this needs to be brought to the attention of the organisers. if this show was eye safe but not camera safe this really should be posted at the event. i understand laser dangers and should probably have refrained from pointing my camera at it but the rest of the audiance would not have know this and so probably need telling.

i feel this should be posted on signs at the event as to warn people this is a possibility.

this should not be happening. i am going to send it back to the manufacturer and get it repaired but i still want to bring this to the attention of id&t as well as hugo (laser image)

cheers ollie