OneHitDone
Well-Known Member
What's wrong with you @JorgeGonzales ? You must be overly medicated or just can't handle them, now go sit in the corner brother
Citizen COBs with suplementation ssl80
- Thread starter rxr2
- Start date
Tactical Farmer
Member
Tom made a badass light, diy citizen accessories for us, has high tech testing gear and is a super smart led mad scientist.
Its very low-class for other light makers to use two seperate profiles here to "derail" the competition with childish bullshit tactics.
Same for fan boys stiring that shit for them.
Its very low-class for other light makers to use two seperate profiles here to "derail" the competition with childish bullshit tactics.
Same for fan boys stiring that shit for them.
rxr2
Active Member
Friends do not be angry for someone is not able to keep. I have come here to share knowledge, and because we share one passion. For me this light. This makes it with my knowledge educated at the university becomes useful.
I'm not going to settle for the show a few products or the presentation of my ability.
I currently works for the introduction of supplementation Blast 320 based on one power supply
will it work with only one power supply for 2pcs COB and 40 pcs ssl 80 leds with current mirror circuit like this :
I will write progress is presented in this tread with electric diagrams or ready-made solutions.
Nevertheless, it would be good to catch a contact who is able to distribute in the United States, these DIY kits because of shipping Polish is a long waiting times and high costs.
The most interesting projects recently done for the Polish horticulture Institute. I was monochromatic illuminators for testing Invitro on bacterial cultures. These illuminators will be also used in studies on the effect of various wavelengths on the early phases of vegetation. And it was look awesome too
And my biggest project is completed
can you read about in my article. Overcast sky simulator in the Daylight laboratory at Trondheim in this project and use 16000 Cree RGBW chips!
where i use 9KW power !! just image heat problem.
you can read about it hire:
https://www.researchgate.net/publication/268219460_Overcast_sky_simulator_in_the_Daylight_laboratory_at_NTNU_Trondheim
each such project is another experience, and the experience is more than knowledge. Only knowledge supported by practice gives real progress.
Therefore, the price of the people who represent the facts on the basis of experience gained.
Therefore, it would be good to moderator cleared thread with unnecessary information and leave only those related to knowledge about light.
I'm not going to settle for the show a few products or the presentation of my ability.
I currently works for the introduction of supplementation Blast 320 based on one power supply
will it work with only one power supply for 2pcs COB and 40 pcs ssl 80 leds with current mirror circuit like this :
I will write progress is presented in this tread with electric diagrams or ready-made solutions.
Nevertheless, it would be good to catch a contact who is able to distribute in the United States, these DIY kits because of shipping Polish is a long waiting times and high costs.
The most interesting projects recently done for the Polish horticulture Institute. I was monochromatic illuminators for testing Invitro on bacterial cultures. These illuminators will be also used in studies on the effect of various wavelengths on the early phases of vegetation. And it was look awesome too
And my biggest project is completed
can you read about in my article. Overcast sky simulator in the Daylight laboratory at Trondheim in this project and use 16000 Cree RGBW chips!
where i use 9KW power !! just image heat problem.
you can read about it hire:
https://www.researchgate.net/publication/268219460_Overcast_sky_simulator_in_the_Daylight_laboratory_at_NTNU_Trondheim
each such project is another experience, and the experience is more than knowledge. Only knowledge supported by practice gives real progress.
Therefore, the price of the people who represent the facts on the basis of experience gained.
Therefore, it would be good to moderator cleared thread with unnecessary information and leave only those related to knowledge about light.
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rxr2
Active Member
@Hybridway I pretty sure that my new cob light which i working on now, you will test on yours plants. and we will compere to Citi horti cob and HPS.
Because at now I'm curries about who is the winner :
Citizen horti COBs
HPS bulbs
or my light base on citizen 3000K Ra90 plus supplementation
I next month we all will see who have right or how much we still doesn't know about light....
Because at now I'm curries about who is the winner :
Citizen horti COBs
HPS bulbs
or my light base on citizen 3000K Ra90 plus supplementation
I next month we all will see who have right or how much we still doesn't know about light....
Johnnycannaseed1
Well-Known Member
Hi, again. Because last thread was deleted ( hide adverts my company) I won't use my company name any more..
I came hire not to make business but share some information with you and discus few new tech quastion.
But back to the topic folks!
Many of you use plenty cobs in their grow box with universal ledil lens or even without any lens.
the problem is much more reflection on side walls before light hit the plants and result is vary bad uniformity. I mean very very bad...
to solve this problem i use not many cobs but as less as i can in this case i use 3 - 4 pcs point of light.
with asymmetric lens with light distribution to prevent concentration light in the center of light area.
im not try to say that only my lens is worth of $ but i try explain why is so hard to make good uniformity in growbox instead of open space, where is only one rule "more source of light more uniformity". so its opposite case...
I'will try write hire every day about how my light systems is woks and share my knowledge. So please DON'T DELETE THIS TREAD ANY MORE..
Putting the train back on track
...You Sir are bang on the money and the only person/company I have come across who has actually noticed what is seriously a significant issue........
I have been LEDing for many many years and I too had noticed the issue of uniformity or rather drop off rate...
i.e 0-10 degrees either side of beam is high output 100% down to 50ish%
...but then as you get to 20 degrees either side of centre the dropoff is considerable, and down to a miserable 40ish%
....then at 30 degrees you are down to a measly 20%
And that for me was/is the achillies heel of LEDs, because it means you have to use more chips/fixtures in a given area when compared to HID in order to get decent coverage, due to the fact that the chips produce unevenly distributed light (to much light on centre and not enough of an even spread across a wider angle).
I have to say I love the simplicity of your solution, I actually had another idea of how to solve the issue which is a bit more complicated (and required a serious investment), but your idea here is spot on and clearly the figures show your lenses work.
Do you make these lenses?... If so I am interested and will drop you a pm to discuss
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rxr2
Active Member
Yes I make CAD model those lens with using LTI Optics | Photopia Optical Design Software. ans make many prototype in optical silicone before i made final version.
Of course we can make better more clear version with using silcone but it will be 3-4 time higher price than glass Or we can coted those lens with antyreflex filter it safe 2% TRANSMISSION of light for now i got 92-94% transmission best what i can get is 97%
Johnnycannaseed1
Well-Known Member
Hey Tom thanks for the reply
You mentioned you can coat lense with antyreflex filter is that a glass lense?
You mentioned 92-94% transmission would that be for the above mentioned antyreflex lense?
You also mentioned you have achieved 97% transmission (seriously good) is that for the silicone type lense?
If you have a website with details of your products...lense/chip packages/light fixtures etc please drop me a pm as I am very interested in you and your product offerings
You mentioned you can coat lense with antyreflex filter is that a glass lense?
You mentioned 92-94% transmission would that be for the above mentioned antyreflex lense?
You also mentioned you have achieved 97% transmission (seriously good) is that for the silicone type lense?
If you have a website with details of your products...lense/chip packages/light fixtures etc please drop me a pm as I am very interested in you and your product offerings
PSUAGRO.
Well-Known Member
Friends do not be angry for someone is not able to keep. I have come here to share knowledge, and because we share one passion. For me this light. This makes it with my knowledge educated at the university becomes useful.
I'm not going to settle for the show a few products or the presentation of my ability.
I currently works for the introduction of supplementation Blast 320 based on one power supply
will it work with only one power supply for 2pcs COB and 40 pcs ssl 80 leds with current mirror circuit like this :View attachment 3740406
I will write progress is presented in this tread with electric diagrams or ready-made solutions.
Nevertheless, it would be good to catch a contact who is able to distribute in the United States, these DIY kits because of shipping Polish is a long waiting times and high costs.
The most interesting projects recently done for the Polish horticulture Institute. I was monochromatic illuminators for testing Invitro on bacterial cultures. These illuminators will be also used in studies on the effect of various wavelengths on the early phases of vegetation. And it was look awesome too
And my biggest project is completed
can you read about in my article. Overcast sky simulator in the Daylight laboratory at Trondheim in this project and use 16000 Cree RGBW chips!View attachment 3740421 View attachment 3740422
where i use 9KW power !! just image heat problem.
you can read about it hire:
https://www.researchgate.net/publication/268219460_Overcast_sky_simulator_in_the_Daylight_laboratory_at_NTNU_Trondheim
each such project is another experience, and the experience is more than knowledge. Only knowledge supported by practice gives real progress.
Therefore, the price of the people who represent the facts on the basis of experience gained.
Therefore, it would be good to moderator cleared thread with unnecessary information and leave only those related to knowledge about light.
why the hexagon "room" design when the light source is square?............so much wasted light imo
rxr2
Active Member
not huge lost but yes its waste a light but the hexagon was already there i replace the long fluorescent source of light by my RGBW panels and puts 2 defuse film.
No its not possible, in supplemented board( too many source of light under on lens. ). Borosilicate glass is optimal way to do this.. i make new version with antyreflex coating and make test in integrating sphere compere to ordinary lens and let you know the results .
It should be 95% transmission..
And yes 97% was on silicon lens with special coating.. but price single lens was 30$
i was just curious is it possible break 95%
OneHitDone
Well-Known Member
JorgeGonzales
Well-Known Member
Seconded.
rxr2
Active Member
but they have own product..
any way
Khatod make good quality silicone lens..
robincnn
Well-Known Member
Khatod offers very even coverage. One of the highest quality and reasonably priced silicone optics.
Unfortunately it cannot work with anything with LES over 30mm
Glass lens is great for large LES or cob with monos.
Cob supplementation is a great idea. Good luck
I have been looking at 90 cri to see if it can offer better results without additional deep red monos. No blue/UV supplimention is possible with high cri unless uv base instead of blue.
I tested some optics here
https://www.rollitup.org/t/lens-and-reflector-optics-for-cob.893660
I like the standard 120 degree glass lens as it had more even spread compared to Kb80 lens.
I am sure you have better ways of testing. Let me know if I can help with any par charts/testing
Unfortunately it cannot work with anything with LES over 30mm
Glass lens is great for large LES or cob with monos.
Cob supplementation is a great idea. Good luck
I have been looking at 90 cri to see if it can offer better results without additional deep red monos. No blue/UV supplimention is possible with high cri unless uv base instead of blue.
I tested some optics here
https://www.rollitup.org/t/lens-and-reflector-optics-for-cob.893660
I like the standard 120 degree glass lens as it had more even spread compared to Kb80 lens.
I am sure you have better ways of testing. Let me know if I can help with any par charts/testing
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PSUAGRO.
Well-Known Member
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robincnn
Well-Known Member
The 120 degree lens is what it is called.
It is more like a 90 or 100 degree lens
Only marginally wider beam than Ledil angelina reflectors
Edit: good question. What happens if 120 degree beam passes through 120 Lens. Don't know. If the beams multiply then it might become something other than 120. May be more narrow. @guod what do you think ?
It is more like a 90 or 100 degree lens
Only marginally wider beam than Ledil angelina reflectors
Edit: good question. What happens if 120 degree beam passes through 120 Lens. Don't know. If the beams multiply then it might become something other than 120. May be more narrow. @guod what do you think ?
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BobCajun
Well-Known Member
These fresnels from Khatod are what I think would be good for grow lights. They're for Bridgelux. You want the COBs in a nice narrow beam, like 1' diameter. That way you get good intensity.
I downloaded the test report pdf and the beam has a hot spot in the middle as usual. So not this particular fresnel lens but a good one from someone else maybe.
I downloaded the test report pdf and the beam has a hot spot in the middle as usual. So not this particular fresnel lens but a good one from someone else maybe.
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BM9AGS
Well-Known Member
I agree with you. But others won't. They prefer more spread dissipation. I have the stella HBs and they're 75 deg and have a nice footprint at 18" I think.These fresnels from Khatod are what I think would be good for grow lights. They're for Bridgelux. You want the COBs in a nice narrow beam, like 1' diameter. That way you get good intensity.