This is a common laser-augmented bicycle light sold on ebay. It has the usual multi-pattern red LEDs with seven effects plus off, but also has two line generating lasers that project a "zone" of two lines at the rear of your bike to encourage motorists to give you some space.
I wasn't expecting this to be too impressive, but it was actually pretty good. The beams were quite well defined on the ground and seemed to have been quite precisely aligned for such a cheap product. I'm guessing the factory probably has an aiming target set up for each assembler.
The control of the LEDs and lasers appears to be from two common bike light flasher chips, both mounted as COBs (Chip On Board) where the chips are bonded directly to the PCB, linked to adjacent pads and then covered in a blob of resin. In this case an elongated blob of resin to cover both chips.
The lasers draw more current than plain LEDs (30mA each) so a transistor is used to boost the current up to drive them.
The laser modules are based on small pieces of PCB material and a shim of copper that looks like it is bonded on with a thermally conductive layer to help take the heat away from the tiny laser chip, and also protect the open LED laser from damage as it is inserted (wedged) into a suitable housing.
Here's a link to the ebay listing I bought this item from:- http://www.ebay.co.uk/itm/291544801559
You can also find them on ebay by searching for the words rear bike laser.
I wasn't expecting this to be too impressive, but it was actually pretty good. The beams were quite well defined on the ground and seemed to have been quite precisely aligned for such a cheap product. I'm guessing the factory probably has an aiming target set up for each assembler.
The control of the LEDs and lasers appears to be from two common bike light flasher chips, both mounted as COBs (Chip On Board) where the chips are bonded directly to the PCB, linked to adjacent pads and then covered in a blob of resin. In this case an elongated blob of resin to cover both chips.
The lasers draw more current than plain LEDs (30mA each) so a transistor is used to boost the current up to drive them.
The laser modules are based on small pieces of PCB material and a shim of copper that looks like it is bonded on with a thermally conductive layer to help take the heat away from the tiny laser chip, and also protect the open LED laser from damage as it is inserted (wedged) into a suitable housing.
Here's a link to the ebay listing I bought this item from:- http://www.ebay.co.uk/itm/291544801559
You can also find them on ebay by searching for the words rear bike laser.
Tomorrows workd now that was a good programme i loved that as a kid.
Drivers as a cyclist (not one of the ass hats who ride six abreast btw) its extremely disconcerting hovering on people's back wheels if you aren't used to country lanes dont use them. Nuisance. Just get tf past.
I have the same light. One of the lasers burned out very quickly.
Is the other video still available?
Please tell how can control back light button on handelbar . Please tell😐
Thy are not real lasers unless they burn holes in your eyes!
ive got one its shit !!! not enought power runs out fast
I got one of these from Ebay 2 pound summat. Incredible value posted from China!
They also do something that projects a green grid infront of the bike, so as you come to uneven ground the lines make the contours really visible as the lines bend and shape, its ingenious idea..
You could use those line generating lasers in the same way as the dam busters did to tell how high they were above the water.
Say when you have multiple lights on poles and you want them all at the same height
Diffraction gratings, they seem to be making a small come back, but I still can't have custom ones made 😑
Wouldn't want to be driving behind one of these wrong fitted to a bike, shining a laser beam into my eyes
I have the very same light. The lasers look great on the back of my bike