Searching For Brightest RGB LED - Page 1
Forum section: electronics / beginners

author: symbianas
author_rank: Regular Contributor
timestamp: February 20, 2023, 07:46:36 pm
content: Hi, I want to focus light to acrylic fiber optic cable and want brightest RGB LED.I have one like this 5050 SMD WS2812 LED Chip:Aliexpress linkDo you think this is RGBW would be brighter?Any other similar variants? (~5mm size)

author: JustMeHere
author_rank: Frequent Contributor
timestamp: February 20, 2023, 07:54:55 pm
content: Go search digikey.com

author: themadhippy
author_rank: Super Contributor
timestamp: February 20, 2023, 08:06:16 pm
content: depending on use,you might be surprised how little light is needed to be seen at the end of a fibre cable.A few years ago i used a small single led torch to light a large star cloth

author: james_s
author_rank: Super Contributor
timestamp: February 20, 2023, 08:07:36 pm
content: You can get RGB LEDs rated for many watts, the higher power ones will require an external driver IC though.

author: symbianas
author_rank: Regular Contributor
timestamp: February 20, 2023, 08:25:53 pm
content: Quote from: JustMeHere on February 20, 2023, 07:54:55 pmI have went through it and for me "luminosity" values in documentation seems to be "random", not sure if I can trust them, some LEDs look the same but "mcd" values are 2x higher. Not sure If I want to test them...Quote from: themadhippy on February 20, 2023, 08:06:16 pmThe problem is that I want to light entire acrylic fiber cable.Quote from: james_s on February 20, 2023, 08:07:36 pmI want something without external driver if possible.

author: symbianas
author_rank: Regular Contributor
timestamp: February 21, 2023, 05:07:16 am
content: Would this be what I am looking for?https://www.digikey.lt/en/products/detail/adafruit-industries-llc/2741/5804104Although I don't see any specs for luminosity and how to drive it. Only that it uses PIC driver?Also I found this 5050 150MA RGB LED:https://www.digikey.com/en/products/detail/solidlite/HL5050A-3C-150MA/13251237How could I drive this? Does driver board for it exists?

author: Psi
author_rank: Super Contributor
timestamp: February 21, 2023, 06:28:58 am
content: Brightest will be something like a 100W COB RGB LED.but you'd need a focusing lens setup to get it small enough to feed down a fiber.And it has no driver built in.https://www.aliexpress.com/item/1005004713012104.html

author: svetlov
author_rank: Regular Contributor
timestamp: February 21, 2023, 08:38:00 am
content: Dear Symbi! For your application you need to pay attention to single laser LEDs with mono -color - blue - green - red - they work well in light guides - but losses can be up to 50 percent - a converging lens can be used for color mixing - for this purpose you can try to use the input lens from the microscope - use it the other way around - as shown by the arrows on the photo - input of 3 lasers of three colors to the wide end - output of a light guide glass tube to the narrow end - although this idea with additional modifications can be turned into a patent - but in the new future everything will belong to everyone - and no one can fit anything for himself - everyone will unite and create for the common good

author: svetlov
author_rank: Regular Contributor
timestamp: February 21, 2023, 08:42:20 am
content: you can buyhttps://aliexpress.ru/item/4000427537503.html?sku_id=10000001769780339&spm=a2g2w.productlist.search_results.8.27204aa68IS1EK

author: Zero999
author_rank: Super Contributor
timestamp: February 21, 2023, 08:42:46 am
content: Not enough information has been provided by the original poster to answer the question.Does the LED have to have a built-in driver?What's the cross-sectional area of the optical fibre?How important is colour mixing?What are the power supply requirements?Dimensions?Cooling?

author: svetlov
author_rank: Regular Contributor
timestamp: February 21, 2023, 09:17:03 am
content: or it is possible to use three or four separate lines without an input converging lens - and mixing should be done at the output of the light guide tubes - ideas can be viewed

author: symbianas
author_rank: Regular Contributor
timestamp: February 21, 2023, 09:33:03 am
content: Quote from: Zero999 on February 21, 2023, 08:42:46 amWould be great, but would be ok to have separate driver board also. Would be great if controllable with MCU.Quote from: Zero999 on February 21, 2023, 08:42:46 amOptical fiber diameter 3mm. I can use lenses up to 10mm.Quote from: Zero999 on February 21, 2023, 08:42:46 amMust be at least RGB.Quote from: Zero999 on February 21, 2023, 08:42:46 am20mah-1A, would be great if controllable with MCU.Quote from: Zero999 on February 21, 2023, 08:42:46 amLED diameter from-to 3-10mm.Quote from: Zero999 on February 21, 2023, 08:42:46 amBetter solution without cooling.

author: svetlov
author_rank: Regular Contributor
timestamp: February 21, 2023, 09:38:00 am
content: symbianas- for what purpose do you need this system - for us your plan is blurry - so the answers are blurry

author: wraper
author_rank: Unknown
timestamp: February 21, 2023, 09:39:53 am
content: Quote from: symbianas on February 20, 2023, 08:25:53 pmLOL, but you trust random ones without any specs from Aliexpress. Luminocity spec is not random, it can be orders of magnitude different at the same current depending on technology and binning. Similar package means nothing. One manufacturer can make similarly looking LEDs in the same package that have 100 times different brightness.

author: svetlov
author_rank: Regular Contributor
timestamp: February 21, 2023, 10:27:23 am
content: prisms can be used in the projectby the link to the product at the top of the page where the images are posted - there is a video on how to mix three laser sourceshttps://aliexpress.ru/item/32865679288.html?spm=a2g2w.detail.seller_rcmd.3.22f6290b1i4sE1&_evo_buckets=165609,165598,194275&sku_id=65415638466&gps-id=pcDetailBottomMoreThisSeller&scm=1007.34525.325667.0&scm_id=1007.34525.325667.0&scm-url=1007.34525.325667.0&pvid=06d24eaf-7b41-4fe1-8484-11616a2c5159&_t=gps-id:pcDetailBottomMoreThisSeller,scm-url:1007.34525.325667.0,pvid:06d24eaf-7b41-4fe1-8484-11616a2c5159,tpp_buckets:24525%230%23325667%2333_21387%230%23233228%232_21387%239507%23434558%233_21387%2314793%23456925%2310&ru_algo_pv_id=06d24eaf-7b41-4fe1-8484-11616a2c5159&scenario=pcDetailBottomMoreThisSeller&tpp_rcmd_bucket_id=325667&traffic_source=recommendation