rxr2
Active 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.
to make that kind of light distribution you need that lens.
as you can see in the center is similar light to +-50 deg angle. Its mean that lens works in angle 100deg with uniformity better than 90 % and this is my lab test from growbox 120x120cm
blast got 3pcs lens with cobs citizen
explosion got 4 pcs cobs
and how its looks compare to HPS 600W with Big wing reflector
I spent many research to make this uniformity on the beginning i try lens form kingbrite ( this is re seller citizen and cree cobs and lens form china) but the result wasn't even close to this..
forget about ledil or similar universal lens manufacture
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...
Next step in run for best light for your plan is spectrum. Single cobs even those best like cree or citizen got very high Out put but they cut out spectrum above 630 nm... its because they use blue chips and phosphor. any spectrum above 630nm from blue chip is less efficient than when you use red chips like osram ssl80 did. hire is some spectrum citizen cobs
citizen 3500K ra 80
citizen 3000k Ra 97 (best what we can see in red spectrum base on blu chips structure)
and finally citi horti led COB
but i even that got less 660-730 spectrum than supplemented cobs by ssl80
this is cob citizen 3500K ra 80 with 12pcs ssl80 660nm and 4 pcs ssl80 730nm like this:
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..
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.
to make that kind of light distribution you need that lens.
as you can see in the center is similar light to +-50 deg angle. Its mean that lens works in angle 100deg with uniformity better than 90 % and this is my lab test from growbox 120x120cm
blast got 3pcs lens with cobs citizen
explosion got 4 pcs cobs
and how its looks compare to HPS 600W with Big wing reflector
I spent many research to make this uniformity on the beginning i try lens form kingbrite ( this is re seller citizen and cree cobs and lens form china) but the result wasn't even close to this..
forget about ledil or similar universal lens manufacture
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...
Next step in run for best light for your plan is spectrum. Single cobs even those best like cree or citizen got very high Out put but they cut out spectrum above 630 nm... its because they use blue chips and phosphor. any spectrum above 630nm from blue chip is less efficient than when you use red chips like osram ssl80 did. hire is some spectrum citizen cobs
citizen 3500K ra 80
citizen 3000k Ra 97 (best what we can see in red spectrum base on blu chips structure)
and finally citi horti led COB
but i even that got less 660-730 spectrum than supplemented cobs by ssl80
this is cob citizen 3500K ra 80 with 12pcs ssl80 660nm and 4 pcs ssl80 730nm like this:
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..
