White, Ultra Bright LED recommendtaions??

[Darren Nemeth]

I am attempting to build my own Hight Definition telecine.

A telecine is a machine wher you can transfer motion picture film to video.

One of the problems I am having is illuminating the film.

The machine I am going to run the film on is lit with an incandescent bulb and the results can be seen in the attached image.

I need to substitute this bulb with an array or ultra bright white LEDs but do not know where to start looking.

Can anyone help?

What are the most reilable, highest quality? Where can I get them?

Thank you in advance.

 

[argofanatic]

Here's the best that I have found.

Luxeon

 

[macboy]

Are you using a diffuser of any kind? It doesn't look like it.

 

[Darren Nemeth]

I am also at a lost of what type of material I can use as an effective diffuser.

Can you suggest some?

If I can diffuse the light effectively I will not need expensive LEDs.

 

[lgreen]

slide?

I'm kind of an idiot, but for a light diffuser i've used the frosted end of a microscope slide. works pretty good; cheap to try if you are just experimenting but you might want something a little more high tec.

 

[cowcrusher]

ive found these new led's that put out, 285 lm. which is way higher than ive ever seen.

bout 150 lumines on this one
http://osram.com/products/led-systems/dragontape.html

this is the brighter one
http://osram.com/products/led-systems/dragonpuck.html

 

[jc2]

Well you will want a reasonably uniform output over the entire frame, so depending on the distance to the slide and the slide dimensions you can figure out the light angle pretty easy. Many high brightness LEDs get their high numbers by having a narrow pattern.
I would think that the luxeon LEDs that were mentioned earlier would be plenty bright and depending on the model they can have a very wide pattern. Another benefit is that they offer a "warm white" color that might make the image a little more appealing over the normal white LED light

 

[TwoSpoons]

Try Lamina LED arrays .
We had one of the little RGB ones to play with - couldn't look at it!

An RGB array would let you fine tune the color balance. And they're available from Digikey at a reasonable price.

I've seen Osrams Dragons too - they're astonishingly bright. Sadly the rep wouldn't give us a sample

Diffusers: ground glass, opal acrylic, glass beads mixed with epoxy (this one is used in diffused LEDs), holographic diffuser film ($$), tracing paper ...