dichros help

[badger1666]

hi i am a noob built my first green projector that works well decided to add red so i brought a green dichro and fired the red from behind it the green dichro does not pass more than about 60% red? should i have got a red dichro and reflected the red and passed the green

[carmangary]

Not necessarily. There are green dichros that offer a lot more performance than what you are seeing. Where did you get the dichro? Any specs?

[badger1666]

got them from uqg(optics)ltd in the uk

Specification

COLOUR:BLUE:GREEN:RED:Spectral Data:T≤ 5% Abs.400-450nm
T= 50% 490±10nm
T≥ 80% Avg. 520-760nm T≥80% Avg. 400-480nm
T=50% 500 + 10/-5nm
T≤10% Abs. 520-560nm
T=50% 590 + 10/-5nm
T≥80% Avg. 620-760nm T≥ 80% Avg.400-560nm
T= 50% 600±10nm
T≤ 5% Abs. 640-760nm

[carmangary]

I'm no expert but those specs don't seem very good. Check out the dichros that Edmunds Optics has. They are much better.

[Dr Laser]

should i have got a red dichro and reflected the red and passed the green

There is a basic configuration for a laser projector. It was designed for a reason.

[Dr Laser]

I'm no expert but those specs don't seem very good. Check out the dichros that Edmunds Optics has. They are much better.

COLOUR:BLUE:GREEN:RED:Spectral Data:T≤ 5% Abs.400-450nm
T= 50% 490±10nm
T≥ 80% Avg. 520-760nm T≥80% Avg. 400-480nm
T=50% 500 + 10/-5nm
T≤10% Abs. 520-560nm
T=50% 590 + 10/-5nm
T≥80% Avg. 620-760nm T≥ 80% Avg.400-560nm
T= 50% 600±10nm
T≤ 5% Abs. 640-760nm


80% 80%!!!!!! My car windshield does a better job!!!!!

[mixedgas]

[% Abs. 640-760nm


[/I]80% 80%!!!!!! My car windshield does a better job!!!!![/QUOTE]

rotate the dichro in case its a polarization issue, or change the angle of tilt. If that doesnt work call up One Stop Laser Shop in florida , or Precision Projection Systems in Ceritos California, or bjomejag on ebay and get a
better dichro.

Steve

[allthatwhichis]

bjomejag on ebay

I got my R/G dichro from there and it seems to perform as well as my Edmund's RG/B and was close to 50% less, although Edmund's is the standard and for $45, it is a small price to pay considering you pay how much for the lasers you are sendng though it.