Lighting Unknowns 15w a19 led cob style build $6 a light

[DylanUnknown]

Ok so here it is in all of its unglorious majesty. First one made 5000k 15w a19 "screw in common household" cob style lense conversion.

Parts and Tools needed: a19 bulbs with plastic lenses the more watts the merrier, I got my glass lenses from car headlights and fog lights, used highest temp silicone available at oreillys, a marker, and a hacksaw. Marked off the widest part of the plastic lense and sawed the top off with a hacksaw. I wanted a jagged rough cut for something for the silicone to hold on to. Attached the glass lense with the silicone after i cleaned it all up. Put an extra layer around the outside seal to hold it better. Here's the result.

Plastic cover off

Homemade cob style

At first I wasn't sure if it intensified the light any. So I used my solar powered scarecrow to kinda judge the results. Using my kitchen chandelier 7" from the floor. The a19 without the lense would barely make it move. While the one with the lense made the scarecrow move no problem. Will definitely be making more of these in 2700k and testing them all here very soon.

 

[BigSm0]

Nice work. As for lenses or any optics for that matter everything you add reduces ppf. Lenses depending on the angle or reflectors depending on angle or size will also reduce total light. The benefit and reason they are worth while is they can increase ppfd. You are not creating not light but you are focusing it making to more intense in a smaller space. Hope that helps.

Shhh don’t tell anyone but my first led was a screw in e-26 led fixture. I had 2 “Hollywood” lights that had 4 holes in each. I took one and scavaged the wires and sockets and made one 8 bulb light. Then later added 3 sets of splitters to each. 32 led bulbs on that bad bitch when I was done.

 

[DylanUnknown]

That's sort of what I was thinking. The light is not stronger but more focused in the area it's needed. @BigSm0 Still, Wish I had a par meter to give you guys better data confirmed results. Maybe sometime soon.

 

[BigSm0]

That's sort of what I was thinking. The light is not stronger but more focused in the area it's needed. @BigSm0 Still, Wish I had a par meter to give you guys better data confirmed results. Maybe sometime soon.

I can say with confidence that a par meter is really a waste of money unless you pay big bucks and even still not to accurate. Light sources alter the Readings and most of all spectrum. Say you had a 2700k and 6500k of the same light. The 2700k would have a lower reading because of the phosphor costing on the leds but the par meter readings would be much different well past the coating differences.

 

[DylanUnknown]

Made the 2700k variant today. Also not too pretty but i upgraded the design and added some aluminum foil inside the plastic to focus all the light through the lense.

Without plastic cover

With cob style lense

Everything in action.