Angel Eyes. Either a review of the LED ring array.
As usual a small overview and implementation not for the intended purpose.
Ring LED matrixes or in another way angel eyes are usually used for modding the car as running lights.
Here is actually the product itself:
The size of a small background cell is one cm. Background Review.
This one has 40 two LEDs. External cross-section of the structure 70 three mm, internal 50 eight mm.
The matrix is in a scattering plastic plafond.
The design is not airtight. There are two wires connected to the matrix:
In the middle of which is a small black box:
The lamp has three snaps for fixing:
The seller sends two copies of the product.
Such matrices come in a completely ordinary form – just a ring of LEDs and wires. So in this one, it’s a full pack. The matrix, the wires, the plafond and…some kind of box. I’ve always wondered what’s in that little box?
PT4115 is an LED power driver. It equalizes the current and therefore the brightness of the matrix at incoming voltages from a little over eleven volts to 30 volts. Well more precisely the driver itself also works at the lowest voltage, but in conjunction with this matrix a low voltage when the stabilization begins specifically this. The entire design – the matrix plus the driver consumes 3.2 W. This power does not change when the supply voltage changes:
On the other side of the board:
MB6F is a diode bridge. Facing the driver. So you can connect the design in any polarity and even to AC voltage.
Brightness. At a distance of 1.The 5 meter sensor gives the highest illumination of 20 one lux. By comparison, from the same distance, a reflective incandescent bulb of two hundred and twenty volts, sixty watts gives an illuminance of one hundred and fifteen lux. The light is snow-white, a cool, very cool color.
Now about implementation. Modding the car was not in my plans, I needed a ring light for macro photography. The branded ones cost an unreasonable amount of money for non-professional use, and this thing is pennies, so I decided to try it out.
When you bring the camera close to the subject, it casts a shadow on the subject, often unevenly. The ring light is designed to remove this defect.
Oh, that’s how it looks on the phone:
And this is how it is on the camera:
And now a few pictures with the implementation of the ring light.
Here’s a photo of the pins from my connector review, made with this light: Connector Review.
Here’s another telling example, in the first photo you could not avoid the shadow on the subject, in the second, with the introduction of the ring light it is not:
The product was provided for writing the review by the store. The review is posted in accordance with the p.18 Website Rules.