Full Spectrum Illiminator Help

[TheWhiteknight]

Hi There,

I'm just seeking some help with an electronics project so any guru's please free to submit your comments or suggestions.

I am trying to build a Full Spectrum Illiminator

here are the specs for the LED's one of each I thought perhaps connecting them in parallel and assigning individual resistors to each LED would be best but just wondered what spec resistor would be best for each LED ? I also would like to ask about the power source as it has to be portable what would be your suggestion ideally it would need to run for 5 - 7 hours continously . Any help or suggestions are gratefully received . This will be mounted along side my Camcorder on a tripod!

1 x 5mm UV LED
Angle: 10Degrees
Max Power Dissipation : 80mw
Max Continuous Forward Current : 30mA
Max Peak Forward Current : 75mA
Reverse Voltage : 5~6V
Forward Voltage (V) : 2.8 ~ 4

1 x 10mm Triple Chip 200mW Infrared IR LED Night Vision
Voltage: 1.5V~1.6V
Current: 140mA, Peak(pulse): 700mA
Power: 200mW

1 x Ultra Bright Red LED 10mm 15000mcd
Intensity (mcd): 11000-15000
Viewing Angle (deg): 20
Forward Voltage (V): 1.9-2.1
Forward Current (mA): 20-30

1 x Ultra Bright Green LED 10mm 20000mcd
Intensity (mcd): 16000-20000
Viewing Angle (deg): 20
Forward Voltage (V): 3.1-3.3
Forward Current (mA): 20-30

1 x Ultra Bright Blue LED 10mm 10000mcd
Intensity (mcd): 7000-10000
Viewing Angle (deg): 20
Forward Voltage (V): 3.0-3.3
Forward Current (mA): 20-30

Many Thanks

 

[audioguru]

Adjust the currents in the red, green and blue LEDs to produce white. But since you can't see UV nor IR then I don't know what you can use to sense their levels compared to the white that the RGB LEDs produce.

 

[TheWhiteknight]

Thank you for your response audioguru ! Do you think it would be best to calculate the resistors needed for each LED individualy if connected in parallel ? Also what about heat from the resistor would it be best to use one with a smaller value . Many thanks

 

[Hero999]

That's not full spectrum, there will be gaps between IR, red, green and blue and UV where there's no light.

What do you need it for?

It's unusual to require a continuous spectrum from near IR to UVA, if you're growing plants you don't need green, just red, blue with a bit of UV is enough.

 

[TheWhiteknight]

I understand there maybe gaps in the spectrum as you say!

Well it is not for use with plants I am a member of a paranormal investigation group and I intend did to use it alongside my Sony Hardrive Camcorder mounted on a tripod it is very experimental . So hence the reason it may need to run for a good few hours during the course of an investigation to help with recording any light anormlies . I appreciate any help on this project !

 

[Hero999]

Use a high temperature halogen lamp without a UV filter to give you a full spectrum lamp, more powerful than your wimpy little LEDs.

 

[TheWhiteknight]

Thank you interesting idea ! But could it run on batteries ?

 

[Hero999]

Yes, a halogen torch (flashlight) bulb can be run from batteries.

 

[audioguru]

You are making video recordings of GHOSTS? Maybe you watch too many cartoons on TV.

LEDs are never connected in parallel except in cheap Chinese flashlights that burn out in a few hours.