Laser Rolls-Royce headlight Circuit- Power/canbus identification help needed - Page 1
Forum section: electronics / repair

author: Cheegro
author_rank: Contributor
timestamp: June 21, 2024, 08:22:16 pm
content: Hello i have a very special headlight its a laser headlight from a 2022 RR.The car was in an accident and I managed to salvage a headlight my plan is if I can get this headlight to work I want to retrofit it onto my motorcycle the only problem is that I was confident in my ability to figure this out until I found out that it was not an LED headlight but the laser headlight and any experience I've had with lasers is I just break them so I'd like to reach out to some more intelligent people than me that might have some insight on the topic of lasers and circuits and repair.I will provide photos of the entire headlight and all of its parts but there's the main beam which is laser that is what I'm trying to figure out but it also has additional LEDs.I have a microscope i am Attempting to take photos With As its not Actually setup with a camera meant for it so hopefully i get some better shots of the circuit.First time posting this seems like the most active electronic repair forum out there You Guys are really flying under the radar

author: Cheegro
author_rank: Contributor
timestamp: June 22, 2024, 10:31:33 am
content: So I've got all the other LED lights working and based on the wiring I believe that the first pin starting from the left would be either positive or negative and then the third pin would also either be positive or negative if I didn't end up cutting the freaking harness to get the LEDs working I'd probably know this by now but maybe one of you could just take a few seconds to analyse it the very first pin is going almost directly to one of the legs of the laser so I'm at the stage of doing some digging myself and analysing a few laser circuits to see if there's any similarities here regarding a direct path from either positive or negative directly to the laser to help me figure out the polarityOh by the way the teeny weenie little LEDs on here are probably the brightest things I've ever seen I haven't even turned them up to 12 volts just at 10 volts there blinding meanwhile they're probably a 1\5 the size of a 555 timer

author: Cheegro
author_rank: Contributor
timestamp: June 22, 2024, 10:40:50 am
content: Just the LED powered up. soon to be that laser diode

author: Phil1977
author_rank: Frequent Contributor
timestamp: June 22, 2024, 11:53:28 am
content: It´d be much better to have only one thread in this forum. Posting the same pictures to different (sub-)forums makes everything very chaotic.I could tell you quite a lot about the laser part - I´ve worked for years on this technology. But if you have no experience with lasers then it´s one of the worst of all bad ideas to mount a non-safeguarded class-4 laser on the front of your motorcycle. I have no ideas about Canadian law but beside legality this is just something that someone professional can not support - sorry.

author: Cheegro
author_rank: Contributor
timestamp: June 22, 2024, 08:19:58 pm
content: It came out of a car it has the original reflector everything will be original How it was mounted in the car. your help would be appreciated. I just need to confirm it powers up and then reassemble everything. how Dangerous can A car headlight be. Sure its a laser. BUt. its also a headlight. in the original form how manufacturer provides it.it was a canadian Car. There are no laws that regulate this. Every super car Around the world has LAser headlights. u should know this if your EXP in this fieldjust to clarify to every one. This laser "headlight". Is used in a production car, all my parts are Completely intact Perfect condition. i have The entire Assembly To house this. with both lenses in original form. And thats how it will be used.. Essentially. your helping me Fix my cars headlight.. Which happens to be a laser...you can see in attached picture 3 reflectors two for leds. And The long Skinny one for the laser diode

author: Phil1977
author_rank: Frequent Contributor
timestamp: June 23, 2024, 08:27:26 am
content: The thing is it´s a Class IV-Laser inside and a car headlamp outside. The more you change about it the more you get from one to the other.In cars these things must always be used with a stack of safety features:- A reflector or lens that prevents direct view onto the phosphor- An active surveillance of the phosphor disc, either as- Conductive surveillance traces on the phosphor disc- Active color measurement of the output light- A speed limit: The laser light must only be active over a certain speed like 60 km/h. The idea is that if you are very near to a 2-ton laser that drives with more than 60km/h into your direction then the laser emission is the minor health risk.There´s also one more thing about the speed: These laser light sources are super fascinating from a scientific point of view. But in real world driving scenarios they are rarely effective. They only are superior to a much cheaper LED if the output light needs to be focused to a very narrow high distance beam. That´s why the speed limit is okay for the car manufacturers: You need the extra-highbeam only if you are driving with high speed on a straight road. Then the better focusing of the laser-created-beam leads to really better illumination in distances around 500m in front of the car.I personally do not motorcycle, I don't know if there is any need for that a focused light. I can only imagine that a main light and an intense but not unnecessarily focused highbeam are more important. And that´s easily achievable with state-of-the-art LEDs. Or to say it with other words: If you want maximum lumen (total flow of light) then LED sources are in each aspect superior to laser sources. Only if you need highest luminance (<=> ability to focus the light) then you may want to use lasers.I can definitely not agree to the YT-video in the other thread that the laser inside these sources is harmless. It has 1 to 4.5W of optical power and definitely qualifies for Class-IV. Look into any laser safety table what that means.

author: voltsandjolts
author_rank: Unknown
timestamp: June 23, 2024, 09:00:56 am
content: Quote from: Phil1977 on June 23, 2024, 08:27:26 amHonda, BMW and Yamaha have been working on motorcycle laser lights, coming soon I expect.Probably best to wait for that, rather than DIY.