Did not realize that the other swoboda brother runs bridgelux......lighting mafia...News & Info
Bridgelux Launches New "Human Centric" Chip-on-Board LED ArraysLIVERMORE, Calif., Oct. 27, 2014 /PRNewswire/ -- Bridgelux, a leading developer and manufacturer of LED lighting technologies, will debut its new Vero® Decor Series™ Class A Chip-on-Board (CoB) LED array products at the Hong Kong International Lighting Fair 2014.
http://www.bizjournals.com/prnewswire/press_releases/2014/10/27/NY47634?r=full&full=true
New Decor Series Class A products are the first commercially available LED arrays on the market to meet the full Class A Color specification.
For more information about Class A Color research and development, please visit:
http://www.lrc.rpi.edu/programs/solidstate/colorResearch.asp
The launch of the Decor Series Class A arrays marks Bridgelux's new "human-centric" approach to product development and color targeting by using Gamut Area Index (GAI) to measure how light and color appeal to and are perceived by the human brain.
Available through global channels in mid-November, the new Decor Series Class A arrays are the first products to use the full Class A Color specification from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute and the Alliance for Solid-State Illumination Systems and Technologies (ASSIST).
In research and development since 2002, Class A Color was created at the LRC with funding by ASSIST. Class A Color redefines high color quality of light. The long-term study examined how people perceive white light sources and what they prefer in terms of color rendering and the white hue or tint of a light source. Bridgelux specifiers and engineers developed prototype lamps based on the Class A Color spectral requirements for the LRC to use in field evaluations.
"Class A Color has been broadly tested and 'tuned' to ensure the most pleasing blend of naturalness and vividness based on subjective human perceptions," said Jean Paul Freyssinier, senior research scientist at the Lighting Research Center. "A majority (75 percent) of those tested from around the world agree that Class A Color light sources provide the best color rendering and optimum saturation levels. It's consistent lighting that won't disappoint."
Distinguished by its human appeal, brightness and natural rendering, Class A colors are inherently more vivid and whites are their whitest due to a broader spectrum of colors and saturation. By achieving a balance of color properties that match how people perceive color, the Bridgelux Decor Series Class A LED arrays not only deliver superior color quality, but provide a better return on investment when compared to traditional halogen and ceramic metal halide bulbs.
Decor Series Class A LEDs consume 30 percent less energy, generate 70 percent less heat, and last 20 times longer than halogen or metal halide light sources.
Lighting has become a critical design feature for high-end retail and commercial spaces, with solid-state LED technologies playing a vital role in helping businesses differentiate and stand out to their customers. Whether creating ambience in a luxury hotel lobby, showcasing merchandise in a retail store or illuminating museum works of art, Decor Series Class A LED arrays deliver a stunning visual experience by appealing to people's natural perception of light, helping to drive improved aesthetics, increased visits, customer purchases and revenue per square foot.
"The launch of our Decor Series Class A LED arrays is a game changer for Bridgelux, our customers and the industry," said Brad Bullington, CEO of Bridgelux. "Light has the power to influence how people behave, what they purchase, their productivity and their mood. Our new human-centric approach harnesses that potential to help our customers create custom light experiences that deliver great aesthetics and a tangible financial impact."
Traditionally, the lighting industry uses Color Rendering Index (CRI) as a primary measure of light quality; however, CRI only measures color distortion. Gamut Area Index (GAI) measures color saturation and strength to more accurately reflect the holistic effect of light and how a person will perceive color. Bridgelux Decor Series Class A is engineered at the optimal GAI and CRI combination based on human perception of light.
Bridgelux Vero Decor Series Class A arrays will be available in 4000 K and 3000 K CCT. They're designed for applications including high-end retail, hospitality, museums and commercial spaces.
Deep reds ,will increase that nice PPE of ~ .066 (close to natural sunlights photomorphogenic / circadian light .7-.72 ),
way up ,close to .8 ....That will prolong the flowering time ,but most importantly ,the Sativa *dom cultivars ,will be very prone to form staminate flowers
Adding blues( especially over 10%-15% of tot. rad. power )
will make things worse in the already prolonged flowering .Foxtailing is almost a sure thing
The working theory is that this job is done by the white LEDs. I am not advocating for blue/reds alone and I would never recommend adding green/amber LEDs. I am advocating either warm whites alone or warm whites with deep reds and deep blue added.So green and amber leds have to fill the high irradiation "gap" ..
The "signal " is provided by the blue and red wls ...
But the actual 'bread' for the whole plant light capturing is missing ...
Yeap ...FR ,green ,amber leds are of really low to average efficiency ...
Still,they should be added ...
So overall efficiency is going to be held up by blue and red leds ,only to be dropped by the rest that should be added ..
Very good data point SG. I am not suggesting that my heatsinks run any warmer than actively cooled ones, I increased the size and surface area of the heatsinks for just that reason and then SDS pointed out that the small amount of infrared radiation would have no effect on the plants either way.Supra,
This is what I am experiencing right now. longer flowering duration. My resin production seems fine for where they are at right now. I also do NOT have the IR from passive heat sinks. Mine run cool constantly with active cooling. My thoughts are to build two pontoons carrying some far red and far blue on them to supplement the high powered white bars. Also adding a lights out IR source to zap them a bit. It has been my intuition that this would decrease the flower time.
Just throwing in my 2cents as I am currently making these observations in my first led grow.
~SG
..thanks a lot SDS... i download both... ...for my pov both are ok...Just notify me ,if I've managed to zip and upload successfully
Cheers.
Guod,I did digitize the graph provided by CREE's datasheet.your numbers in my tool...
5000K
View attachment 3282309
match
3000K High Cri
View attachment 3282310
3500K High Cri for me
Well ,I've to admit ,that it looks like a great light spectra ...the standard 3000K cxa emitter(Z2 bin ) at 1925mA with 4 deep red(660nm) at 350mA
View attachment 3282321
it´s not your mistake.Guod,I did digitize the graph provided by CREE's datasheet.
(The same exact way ,i did for the rest of leds/arrays ,I've analysed so far ...)
I've to check it .Thank you,for the notice ...
It might be 3500°K instead of 3000°K
I'll double check it -later- with this :
i just run the update...me so lazy..
...upsss... ...and thanks Guod for your pics...
...Guod the last version of color calculator osram silvania its 5.31... ....you use 5.17...any special reasons for this?...
...i attach the 5.31 for windows... ...user guide pdf inside...
saludos
That I will do !it´s not your mistake.
i postet this mismatch of given graph and numbers in the datasheets more then twice.
get the osram tool its free...
https://www.sylvania.com/en-us/tools-and-resources/Pages/led-color-calculator.aspx
mmmmmm .. .. .. PANCAKES !!View attachment 3282659 I have 6 Xtra cxa3070 AB 3000k cobbs in hand PM FOR DETAILS if you need them. I bought 20 last ones left from arrow.com
Circling back to this observation I said I'd check when the bulb shuts down. Not much to report though, no real "after-glow", the bulb itself glows for less than a minute, then goes totally dark. Recorded it on my cam while I was in the room in case the CAM (has IR) saw something I couldn't see but same thing, it just flipped to IR mode within 30 seconds. The secret to speeding up flowering with these Elite Agro's would seem to be in their spectrum somewhere and on throughout the cycle...Hey folks, interesting conversation and observations on this IR/FR after lights out. Hadn't thought to check my CMH lights at lights out. Was considering them (730nm) until I switched to flowering with the Elite Agro's and they shortened my flowering time by close to a week first round. Then I was afraid to screw around with it in case it was detrimental. I'm a night owl so have never observed what happens with these bulbs at lights out. Will either force myself to get up (lights come off at 7:00 am) or setup some recording with my web cam to see if there's any after-glow mentioned and report back here when I check it. Remember someone suggesting there's enough FR/IR in the Elite Agro spectrum all the time but perhaps this has some merit... Cheers.
View attachment 3282659 I have 6 Xtra cxa3070 AB 3000k cobbs in hand PM FOR DETAILS if you need them. I bought 20 last ones left from arrow.com
Be careful.....the IR in the Foscam cameras are 730nm. Don't leave them on all the time or in auto mode. Manually turn them off and on.Circling back to this observation I said I'd check when the bulb shuts down. Not much to report though, no real "after-glow", the bulb itself glows for less than a minute, then goes totally dark. Recorded it on my cam while I was in the room in case the CAM (has IR) saw something I couldn't see but same thing, it just flipped to IR mode within 30 seconds. The secret to speeding up flowering with these Elite Agro's would seem to be in their spectrum somewhere and on throughout the cycle...
View attachment 3283031