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An unusual light that puts out a flat beam in all directions. It is apparently intended for mounting on windowsills to create a beam of light around a whole window bay from a single point, but is also frequently shown in Ali/eBay listings in corridors creating a series of tunnels of light.
Although the beam of light does diverge fairly rapidly over distance it is still tight enough to create very nice laser-like effects with a light fog swirling through it.
Here's the AliExpress listing I bought it from, but there are also many other listings and styles.
Guide price - around £20.
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This is a very unusual little light, it's available from places like ebay and aliexpress. This one came from aliexpress where it was significantly cheaper than ebay, and it's quite unusual because it's got a lens all the way around and it actually projects a beam of light. In all directions, this is described as a window so light, and the point is that if you've got a window sill with the window frame around it, if you place this on that, let me just plug this in we'll analyze the power. At the same time, i have connected the earthworm.

This there's no point it's not connected inside as usual. We show open it and explore it in a moment. I've plugged it in the new hoppy, it's not a hoppy anymore. It's an anti.

It's got three buttons, including one marked fun. It doesn't give you fun, though, i'm not really sure what the fun button is. The instructions are all in chinese power. Consumption 8.5 watts.

Perfect. 0.5. That's typical! That's just what you'd expect, but this thing projects a beam out in all directions, literally, all directions, and - and the idea is that, if you put it in a windowsill, it will light the whole interior of the window frame with a sort of ribbon of light. Almost like a neon tube around it and it looks okay.

The pictures on aliexpress and ebay typically show them in corridors, and that is an interesting feature. That would be quite nice in say, for instance, a nightclub and here it's just creating the line around it and if i was to point this well, let's uh. Let's do that. I'm just going to point at the wall from here to about 10 feet away.

That's about say three meters or so, and it's opened out it's the beam has opened out to approximately that wide. You know it's got a fairly wide divergence, but it's still not too bad, but let me show you a really neat feature of this. That is quite distinctive, so i'm just going to pause the video for a moment and change the setup and show you what this does when smoke is blowing through it. One moment please so here's the light at the bottom of the screen.

You can see the beam spreading out from it as a flat line reminiscent of the laser curtains that used to get where it used to create a flatline laser, and if i get a device that can blow smoke through it, you will see that where this smoke Actually passes through the beam, it's all just cleared off to the side, but that's okay. Let's try it again where it passes through the beam. You see a slice out of the smoke and it's a very distinctive effect. It's really quite attractive.

It's all decided to go off the right hand, side for some reason. I'm gon na give this another go and start off over there just to see if i can get this effect better, but quite a nice effect that could be quite pleasant, uh just pointing down in a nightclub not just creating a line on the floor, but also Potentially highlighting this a fog as it goes through it, okay, the light is about to come back watch your eyes, okay time, to take it to bits, so i'm going to start by unplugging it. This seems like a good idea and i shall disconnect the little quick connect here and we shall explore why it's not earth for a start, so this rotates on the front it screws on and when it unscrews. I shall zoom down this just a little tiny bit.

It reveals a lens in the style of a sort of like bangle sort of amulet, and that is being sandwiched between this uh silicon seal that has been laid into a groove. That's been machined on both sides and the light source itself is a square hub in the middle that has an led physically glued on with a hard silicon glue on each side. It does say cree, i'm not sure if it's cree or not. I just never really trust it when they say cree.

It's interesting to note that when i first got this, there was a very dark area of the beam, and one of these wires was actually just basically right down directly in front of the led like that uh, which was obscuring quite a bit the light um. If you got one of these for yourself, these big links here aren't really needed. You could actually put a little floating wire link round, although i'm sad that it might be quite hard to solder onto this. Now it's in a heat sink.

Okay. Let's take a look at the power supply inside, let's grab a suitable screwdriver. Another thing i noticed was the cable pulled out quite easily from here. It's not really gripped terribly tightly in that and i get a feeling that it's going to be a standard power supply module, because that often happens when they've got the pre made tail in the power supply module and they just stick it in it'd be nice.

If they put longer tails in those, but they are kind of designed to be built into equipment, that's also why the earth is floating because it doesn't go into the power supply module and it's usually just cut off or attached to something inappropriate or just glued in Place which doesn't work too well, there's the earth floating they could have actually maybe clamped under there. But having said that, that's not going to be so great for the ceiling. Is it but there's what we have a little led driver uh. What does actually say here? Oh, it's got a fairly high voltage output.

Let's grab my little magnifying glass here, dc up at dc 6 to 11 volts at 600 milliamps, so yeah, it's treating those as 2 watt leds on the front with a 600 milliamp and each is dropping about three volts. So that's the best part of well. What is this, what did say it said uh six to eleven volts that is just using this at its maximum capacity, then model zx two to three times three watt: okay they're using four, but not to worry these things happen. So they're pushing this to its uh to its max, but the construction is nice.

It's like almost like a machined casting that the way it's done, i'm not sure what it's made of i'd tend to guess: aluminium or aluminum, but uh people often say that you know. That's not what it potentially is. It could just be another sort of generic casting metal if you do open one of these up and you want to put it back together. You have to center this lens on that seal and then hold it very tightly as you screw this back on because as it tightens up and my fingers are going to get in the way here, it wants to squish that lens make it slide about.

But you can just nudge it. You can fine tune it just before you give it its last little titan, i'm not sure how waterproof it would be suppose that this is waterproof fish by defox. It's got the potting compound in it, but um, i'm not sure what happened if water got in here, but hopefully it wouldn't, but you never really know. I'd probably tend to use it inside anyway, but there we go.

It's quite neat: it's uh, aliexpress i'll, put a link to it. In fact, an aliexpress windowsill light and it works. It does project that beam out in all directions, there's a few different versions. This was one of the cheaper generic ones, but i bought it because i like this style of this of heatsink um, but that's neat and the heatsink in the back here they're doing a fair effort to heat sink, although ultimately um the heat has come from this Area at the back of the power supply from where the leds are mounted other than through the thread onto this there we go an interesting light.

It actually lived up to my expectations. It probably could do with a little extra screw be added on here for the earth connection um, but that is about it. It's pretty good. I like it.

16 thoughts on “Unusual flat-beam window sill light”
  1. Avataaar/Circle Created with python_avatars Rabbi Zyklon Brausebadstein says:

    Would it be any good to use for a cloud chamber.

  2. Avataaar/Circle Created with python_avatars Ni5ei says:

    I like the design and that it's metal.
    Looks quite heavy too

  3. Avataaar/Circle Created with python_avatars Richard Wilson says:

    How can I send you something interesting for autopsy?

  4. Avataaar/Circle Created with python_avatars bdf2718 says:

    Fun for function? Makes the other two buttons do two things? Maybe.

  5. Avataaar/Circle Created with python_avatars Janus Kobain says:

    So you moved from your old good HOPI because of FUN?!

  6. Avataaar/Circle Created with python_avatars Keri Szafir says:

    Interesting lighting design, if not for the shortish cable made of purest chinesium (possibly the copper-coated steel kind), limiting the possibility to connect the thing while sticking to proper ingress protection for outside uses.

    I was expecting something a dead zone right at the lamp's base, but the thing seems to shine the light at 360°.

    It shouts "Jaffa, kree!". No, just kidding. Gaters gonna gate.

  7. Avataaar/Circle Created with python_avatars Kuba Ober says:

    That earth wire really should have been connected to the cast body – this is a singly insulated design due to the wiring loom alone, no need to even look inside the led supply as it wouldn’t make a difference. So the entire conductive body has to be earthed. But expecting such a basic safety feature from those fly by night designs is obviously too much to ask :/

  8. Avataaar/Circle Created with python_avatars Acme Fixer says:

    Cool! I wonder what it would light up if the screw-on cover was full of holes? If you drilled enough holes it might give a disco mirror ball effect, but not moving. Or if you were clever drilling the holes, you could spell letters or words on the walls. Thanks, Clive.

  9. Avataaar/Circle Created with python_avatars Cameradoctor says:

    'FUN' abbreviation for 'Function" ??

  10. Avataaar/Circle Created with python_avatars Leigh Lord says:

    If you don't mind me asking, where did you get the new AnTai meter from?

  11. Avataaar/Circle Created with python_avatars DC Allan says:

    Its a really nice ligting effect. I think if I had one or more I would change the LEDs to ws2811s just wrap a short strip of them round the inside. Be easy to make it look like its turning or you could show off a big red ring. Or of course any other colour ring you desire not just red. 🤣 great video 2x👍

  12. Avataaar/Circle Created with python_avatars Peter Kay says:

    Four on order; all will be immediately modified to run on 9-12v DC via a mosfet PWM Dimmer.. Nice find Clive 👍👍 Might even section the 4 LEDS into separate independent channels..

  13. Avataaar/Circle Created with python_avatars ChayD says:

    Looks like those Lampo brand UFO disco lights from the '80s. Love it!

  14. Avataaar/Circle Created with python_avatars Furr Bear says:

    I wonder why they don't have just bare metal inside the seal for better brightness – it would seem a fair bit of light is being absorbed by that matte black finish.

  15. Avataaar/Circle Created with python_avatars Nigel Gunn says:

    A 12W LED Ceiling Light, with only a 3W power supply?

  16. Avataaar/Circle Created with python_avatars Gregory Thomas says:

    Pretty nifty!
    Using them to mark important doorways would be a good use as well…especially the bathrooms & exits.

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