Need advice on $1000 RGB

[DanG]

TUK,

If you are in the US you will not find anything - hardly ever - for sale on ebay that is legal in the US. Your best option is to talk to one of the folks who sells IIIB product here on the boards, of which we are one, but there are several others.

The simple formula is this: eBay treats an auction as a contract of sale. It has no mechanism for making sure that the person on the other end of the transaction has the appropriate credentials (variance) to be able to buy the product AND forbids placing extraneous conditions on the buyer to avoid confusion in the auctions. Therefore, legitimate sellers of laser systems cannot enter into a contract that could require them to sell the product to an unauthorized person.

This is part of the reason why so few if any credential-requiring items appear on eBay.

[Tuk]

OK that's a good point! I've looked at a few of the U.S. dealer sites but they don't really have products listed, usually either parts, or they want me to contact them to special order something. So it seems there are few U.S. laser manufacturers, besides like Chauvet and American DJ.

I have seen your site in the past, so it's cool to be able to chat with the company on a 3rd party forum!

Anyhow, I would love to be able to get an effect similar to this:


But I understand I'll be sacrificing a lot of cooler features in that price range. This will be my first major laser purchase. I own a Chauvet Scorpion Storm MG which is a 30mW green, and wanted an upgrade. If I can make my money back renting the $1000 laser then I may later get a nice KVANT $10,000. But I'm in Idaho and AFAIK the only person in the state that would have a big laser system, so I've been trying to get a feel for the market here. Some promoters may not even want to rent a big laser!

[White-Light]

I don't need a top quality laser, I'm not planning on using is professionally or anything. White-light's list is f.ex WAY overkill for my use. I don't even mind the ebay laser being ~30-40% underspec, as long as it works.

But what is a better option of laser? Do you know any good companies that makes cheap lasers with custom specs?

I didn't think it was highly specc'ed at all. Very mid range. I'd have been choosing higher and I'm a home user:-

Kvant 445nm is a bit of an extravagance but like I said hardly anyone makes 445nm's to retail so choice is limited. DT scanners are a good quality brand whilst relatively inexpensive. Most would choose the DT 40 or 40 wides rather than the cheaper 30's I quoted for you. Also, cases are never cheap purchased seperately. Laserwave lasers are good quality but certainly not top spec compared to eg Kvant. I would regard them as an everyday good reliable choice with great back up.

However, I take your point but equally think the budget is ambitious..

Check out NRG lasers

I second this.

You may have to lower your power expectations at your price point, but you can be rest assured that some NRG systems have been reviewed on here and came out well for their price point and made their stated powers.

Also, its worth mentioning NRG are known to be reputable and an ILDA member so I very much doubt you'll have any trouble.

Check our their web site and if you can't see anything then try asking them if they could build you something to your spec for that budget. Many of their lasers are TTL at your price point but I'm sure there's some way they could accomodate you even if by a compromise on power.

[Grix]

I got some very nice offers from the member laserlinna (from Laserking), and I think I'll buy from them! But I need to decide between these two lasers.. Which one would you choose?


Red laser 350mW@650nm Analog 10k
Green laser 150mW @532nm Analog 10k
Blue laser 70Mw@473nm Analog TTL 10k
All are CNI laser module in China
Scanner: 30kpps

USD 1192.00

---------------------------

Red laser 500mW @ 650nm Analog 10k
Green laser 100mW @532nm Analog 10k
Blue laser 300mW @450nm Analog TTL 10k
All are CNI laser module in China
Scanner: 30kpps

USD1160.00


They personally recommended the 473nm one because of better beam specs, but I also want the deeper color (and extra brightness) of the 445nm.. Plus the green/red ratio of the last one seems better..

[White-Light]

Anyhow, I would love to be able to get an effect similar to this:

2 points:

1. Its illegal to audience scan in the US without the correct variance - I'm sure the US members can inform you better of the law over there, so that effect would not be possible except overhead.

Tunnels are brighter when inside them then looking at the outer wall in by a long way so a similar liquid sky effect or curved 1/2 tunnel overhead might serve you better so you keep your audience effectively on the inside whilst not actually scanning them.

2. Hard to tell from a picture but either its saturated or I'd say thats a pretty heavyweight laser as both blue and red look very strong.

[Grix]

Bump. Anyone got any advice on my last post?

[White-Light]

I'd take the 2nd of those specs as red is one of the least visible colours so the more you have the better.

Only thing I would do is ask if they can give you 150mw green instead of the 100mw proposed. There's very little price difference 100>150mw so I don't see why with a little pushing they couldn't do it for you.

Alternatively if they absolutely won't, see if they'll do you the 2nd spec for the 1st's slightly higher price with the 150mw green. That would give you:

Red laser 500mW @ 650nm Analog 10k
Green laser 150mW @532nm Analog 10k
Blue laser 300mW @450nm Analog TTL 10k
All are CNI laser module in China
Scanner: 30kpps

The 445nm should be around twice as bright as the 473nm but only because of the much greater power. Its actually a less visible colour (peak eye sensitivity is 528nm).

This is the chroma plot for what I posted above with 150mw green & 500mw red:




As you can see, even with 150mw green and 500mw red, you're light on both green and red and heavy on blue. I predict a very strong balance towards purples and violets. Personally I'd view it as blue heavy but thats just my opinion.

The perfect balance on paper is:

Red laser 500mW @ 650nm Analog 10k
Green laser 200mW @532nm Analog 10k
Blue laser 150mW @450nm Analog TTL 10k

So might be worth seeing if they could do that. I also think the more powerful green will lift the overall brightness of many mixed colours. However, with green up in power to 200mw, I would think it would be more expensive. This is the plot for that (I actually put blue in as 445nm):



I should point out Chroma is just a prediction tool. I should alos point out that all plots should be rechecked by yourself as I accept no responsibility for any mistakes. the onus is on you to recheck and ensure everything is correct.

[norty303]

Find out how much they could do the following for:
150-200mW 532
150-200mW 640
Whatever the 445 is, you'll dial it back anyway

That'll be just as bright as the 500mW 650, but with superior beam specs

[White-Light]

As Norty Suggested it, I plotted 640nm

If you dial the 445 back to 150mw then:

200mw Green 532
300mw red 640

Gives perfect balance.

This is your plot for that:



Note this is with the 445nm blue at 150mw. With the blue still at 300mw, its very blue heavy. You can always dial the blue back in the software though as Norty said.

[danielbriggs]

If you dial the 445 back to 150mw then:

200mw Green 532
300mw red 640

Gives perfect balance.

Not sure if this is appropriate...
But didn't you recommend a minimum of 1W of 445nm for every 100mW of 532nm?

http://www.photonlexicon.com/forums/...098#post162098


"Just sayin'!"