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ANALOGUE DRAGON LED
DRIVER HPLS36-AP750

Analogue Dragon LED Driver HPLS36-AP750, retail $TBA (www.light-speed-tech.com...)
Manufactured by Lightspeed Technologies (www.light-speed-tech.com)
Last updated 10-25-07

This is the Analogue Dragon LED Driver, a piece of laboratory equipment designed to provide a collimated monochromatic or white beam for for biological, medical, imaging and many other applications. Interchangeable LED heads available in 7 different colors and 2 shades of white, with an optical power output of up to 400mW at some wavelengths.

This blue unit quite readily spun the vanes of a Crooke's Radiometer, so I know for a fact that it has a high power output (180mW to 360mW advertised for the 475nm blue LED).

The focus is easily adjustable from spot to flood just by loosening a pair of handy thumbscrews and sliding the end of the unit in and out.

SIZE

To power up the HPLS-36AP750 (the analogue unit), plug the "wall wart" power supply into any standard (in north America anyway) 110 to 130 volts AC at 60Hz two- or three-slot female wall receptacle, and plug the small end of the plug into the female receptacle on the back of the HPLS-36AP750 unit.
This feeds it power.

Turn it on at full power by flipping the little silver switch lever (located on the back of the product) to the right (as the label on the back faces right-side up).

Flipping the switch lever to the left allows you to adjust the intensity with the rotary pot

(the knob).

Flipping the switch lever to the center position turns the LED off.

Power to the unit is confirmed with a small blue LED on the back of the unit; as long as this LED is illuminated, you can rest assured that the unit is receiving power.

The focus can be adjusted from spot to flood by simply loosening the thumbscrews near the front of the unit and sliding the end of the unit in and out.
Tighten the thumbscrews back up when you have the focus set where you want.

The LED can easily be changed without soldering (I was furnished with red, green, and royal blue (with integral optics) color ones in addition to the blue LED that came already installed); to change LED, first turn the unit off (position the switch lever to the center position). Unscrew & remove the thumbscrews, and set them aside. Slide the end piece (the part containing the lens) off, and set that aside too.

Using an allen wrench or a Torx wrench of size T10, unscrew & remove the two allen head screws holding the Luxeon LED in place. Set the screws aside.

Pull the LED straight up and out of the socket, and dispose of it...er...uh...set it aside.

Gently press the new LED in place; inserting the wires on it into the holes on the front of the product. Be certain it is centered.

Briefly turn the unit on and then back off. If the LED does not light, remove it from the socket, rotate it 180°, and reinsert it.

Replace & tighten (firmly, but NOT forcefully) the two allen screws that hold the LED in place, slide the head/lens assembly back on the unit, and replace & tighten those two thumbscrews.

From D.K. of Light Speed Technologies comes the following (his name & email address was omitted to protect his privacy):

Regarding the testing of HPLS-36AD3500 (the digital unit, not the analogue one), you would need a function generation of some sort, capable of producing:

1. Rectangular pulses for testing in Digital Mode, TTL 5V, active High, with duty cycle at least 10%, the lower the better, otherwise the protection circuitry inside the HPLS will prohibit running the unit with duty cycle higher then 10-12%, and single pulse length more then 1ms. It is very fast - 1µs pulse on the output looks almost rectangular.

2. Any waveform (sinusoidal, saw tooth, etc, CW level), 0-5V to run in Analog mode. Input voltage converted into LED current linearly, slightly slower then Digital Mode. There is a switch on back panel to set the mode: Digital, OFF, Analog.

The integration time of spectrometer is not that important. At whatever frequency you run the HPLS unit, the spectrometer will see some light.

So on your side, to test the HPLS-36AD3500, you would need to connect some sort of voltage source to it's input (even as simple as 3-5V from power supply, or even connect 3 batteries in series to get 4.5V), otherwise you do not see any light.

That's why I'm testing the HPLS-36AP750 (the analogue unit), as I do not own or have access to a function generator; and I do not have power wires nearly long enough to go from my laboratory PSU to the HPLS-36AD3500 (the digital unit) in the vicinity of the ProMetric's camera, so I would not be able to perform beam cross-sectional analyses of it.

This product is line powered, so I do not have to tell you which part to remove, gently place on the ground, kick into the weeds, and then tell you not to.

This is a loaner, and I'm sure its owner will want it back with no dings in the exterior metal or rat pellets or yukky old toliet water inside. So I won't throw it against the wall, stomp on it, try to drown it in the {vulgar term for feces}bowl or the cistern, run over it, swing it against the concrete floor of a patio, bash it open to check it for candiosity, fire it from the cannonada (I guess I've been watching the TV program "Viva Piñata" too much again

- candiosity is usually checked with a laser-type device on a platform with a large readout or with a handheld wand used by Langston Licktoad), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that non-loaner products may have inflicted upon them.
So this section of the LED Driver's web page will seem a bit more bare than this section of the web page on a page about a product that is not a loaner sample. This is also a piece of laboratory equipment, so I would not perform any of the more damaging or even potentially destructive tests on it even if it was a keeper.

The listed specs on the blue LED assembly I received for testing are:
475nm (Blue): 180-360mW@500mA

Specs for the three LED colors I was furnished with are:
455nm (Royal Blue): 320-400mW@ 500mA
530nm (Green) 110-145mW@500mA
630nm (Red) 250-320mW@500mA

The green LED arrived broken (one of its power leads was missing), so I am not able to furnish photography, measurements, or spectroscopy of it.
**** VERY IMPORTANT!!! ***
This kit is an evaluation sample, and has been in the hands of a number of other users who had it before me. It is therefore very likely that one of the other people accidentally busted this LED before I received the kit. The people at Lightspeed Technologies are not in any way responsible for this!!!

After being operated at full power for approximately two hours (blue LED), the case temperature was measured at 96°F (35.5°C).
Ambient temperature in the testing area was 79°F (26.1°C) when this measurement was taken.

And after being operated at full power for approximately sixteen hours (again, using the blue LED), the case temperature was measured at 103°F (39.4°C).
Ambient temperature in the testing area was 78°F (25.6°C) when this measurement was taken.

After being operated at full power for approximately six hours (again, using the blue LED), the temperature of the MCPCB of the LED itself was measured at just 109°F (42.8°C).
This is considerably lower than I expected, considering that there's no heat sink grease involved.
Ambient temperature in the testing area was 77°F (25°C) when this measurement was taken.

Listed features are:

• Plug and play frame for LEDs
• Interchangeable LED heads
• 455nm, 475nm, 505nm, 530nm, 590nm, 617nm, 630nm, white 5500K, white 3300K
• Selection of collimating optics/ attachments
• Selection of base units
• Fast analog control
• Low Noise CW control
• Fast pulsed (digital) control
• Narrow bandwidth or broadband
• Wide field or focused output
• Continuous, waveforms, or pulses to <150ns
• Up to 400mW CW, x5 intensity short pulse
• Accepts LEDs with 0.2”, 0.4”, 0.6”, 0.8”, 1”, 1.2” pin spacing
• Mounting to standard and metric posts (8-32 and M4x0.75 threads in base unit)
• Base unit diameter 1.450” (36.8mm)

Listed applications are:

• Fluorescence excitation
• Highspeed imaging
• Synchronous detection
• Machine vision
• Biomedical optics

Beam photograph (narrow beam red) on the test target at 12".
That yellow color in this photograph does not really exist.
Photograph was not cropped so that it would match up more closely with the one directly below.
Measures (unmeasureable) (low) to 1,490,500mcd (high).

Beam photograph (wide beam red) on the test target at 12".
Measures (unmeasureable) (low) to 54,800mcd (high).

This is a wide-angle beam, and if I've told you once, I've told you 1,000,000 times:
Wider viewing angles always, always, ALWAYS equal lower mcd values!!!

Beam photograph (narrow beam blue) on the test target at 12".
That white color in this photograph does not really exist.
Photograph was not cropped so that it would match up more closely with the one directly below.
Measures (unmeasureable) (low) to 190,400mcd (high).

Beam photograph (wide beam blue) on the test target at 12".
Measures (unmeasureable) (low) to 35,500mcd (high).

This is a wide-angle beam, and if I've told you once, I've told you 1,000,000 times:
Wider viewing angles always, always, ALWAYS equal lower mcd values!!!

Beam photograph (royal blue with optic) on the test target at 12".
That whitish color in this photograph does not really exist.
Photograph was not cropped so that it would match up more closely with the others on this web page.
Measures (unmeasureable) (low) to 225,000mcd (high).

All measurements were taken on a Meterman LM631 light meter.

Photograph at tightest collimation; allowing you to see that the beam is a magnified image of the LED die (light-emitting region).
Photograph was taken at a slight angle; that's why the image appears a bit skewed. Range was ~4 feet (~48 inches).

WMP movie (.avi extension) showing the instrument spinning the vanes of a radiometer.
This clip is approximately 4.5 megabytes (4,547,370 bytes) in length; dial-up users please be aware.
It will take no less than fifteen minutes to load at 48.0Kbps.

The tightest collimation the instrument can provide was used here.

I cannot provide it in other formats, so please do not ask.

Spectrographic plot

Spectrographic analysis of the LED (red) in this set.

Spectrographic plot

Spectrographic analysis of the LED (blue) in this set.

Spectrographic plot

Spectrographic analysis of the LED (royal blue) in this set.

ProMetric analysis

Beam cross-sectional analysis (narrow beam).

ProMetric analysis

Beam cross-sectional analysis (wide beam).
Images made using the ProMetric System by Radiant Imaging.

TEST NOTES:
Test unit was sent as a loaner by R.W. of Lightspeed Technologies on 10-12-07, and was received late on the afternoon (5:32pm PDT) of 10-16-07.

I'll have custody of it for ten days at most (latest date is 10-26-07), then it must be returned to Lightspeed Technologies. At that time, the "

" icon will appear next to its listings on this website.

Although it will receive the "

" icon, it will not receive the newer (but still dreadful) "

", "

", or "

" icons.

UPDATE: 10-25-07
I have returned this unit to Lightspeed Technologies, and have added the "

" icon to its listings on this website.

PROS:

CONS:

MANUFACTURER: Lightspeed Technologies
PRODUCT TYPE: LED-illuminated test equipment
LAMP TYPE: Blue Luxeon I LED (installed in this sample; other wavelengths/colors available)
No. OF LAMPS: 1
BEAM TYPE: Variable
SWITCH TYPE: Lever-type switch on/mode change/off on back of unit
CASE MATERIAL: Metal
BEZEL: Metal; LED protected by what I believe is a glass lens
BATTERY: N/A
CURRENT CONSUMPTION: Unknown/unable to measure
WATER RESISTANT: No
SUBMERSIBLE: No
ACCESSORIES: Wall wart PSU
WARRANTY: 1 year (on electronics), 90 days (on LED itself)

PRODUCT RATING:

Analogue Dragon LED Driver HPLS36-AP750 * www.light-speed-tech.com...

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