you keep telling me, that it is impossible??
then riddle me this. Where exactly do you think compound camera lenses COME FROM? they dont come from planet pluto, do they? no, they come from earth. humans make them. they exist.
why do you suppose those equations are called the “lens maker equations”, eh? Because compounds lenses CANT be MADE ?
if i want a compound lens, that has a variable focal length? i simply choose the proper two lenses, then slide them from touching, to further apart. Then i readjust the emitter distance to re-focus up. Easy.
Didnt you ever notice there are a LOT of camera lenses that are 2,3 or 4 lenses only? fairly simple construction? Where do you think they come from? They get made by people doing what i do.
the reason its not being done in the flashlight world or almost never? simple… all of the optics engineers work for the camera lens and binocular and telescope companies. Also, no doubt? The chinese flashlight factories? Are going to be like the IR illuminators back on my night vision site? They are just interested in basic fabrication, fast money out the door. They have no vested interest in making the design or build more complicated. I, on the pother hand? am not a “businessm,an” in a suit that has to answer to investors. Its in my best interests to design something “better” and make it. Particularly enjoying it, if it IS more complicated or advanced.
again, not trying to be RUDE, but… you keep telling me theres some “delta problem” which you allow to keep you from thinking you can do anything. Since i was not aware it wasnt possible? I just found a few equations, solved for what i needed and set about making what i wanted to make.
its amazing what you CAN do, when you are unaware of how you are not supposed to be able to do it. Which is of course news to me? since i have already done this stuff before already, in real life. I just needed to learn fabricating and machining to make my units i already have designed and working already.
engineers like me? we arent particularly or necessarily any “better” at math? than anyone else that took math classes. In fact, most of us really arent the best at it, to be perfectly honest. Its the WAY we were taught to USE it thats different. Also? “most” engineers? are unfortunately like “regular math people”, in that they need an equation to use.
the TRICK is? to go out anmd FIND something that has all the variables you are going to use. Then usually, you have to rearrange (solve and resolve multiple times) the equations INTO the form you NEED. If it was sitting somewhere, ready to use? Iy obviously wouldnt be a “problem”, now would it?
and, for me, a big dose of my frame of MIND going in. I concentrate on what i DO know, and go on from there. Or, I have other “tricks”. I orften start at the “solution”, and concentrate on creating the LAST STEP (missing) that obviouly led to the solution. Then i figure out what the step before that must have looked like. Eventually i end up at the “beginning” and i am done.
Or i start at the easy beginning… AND at the solution… and i “come in” from the beginning, and i come in from the end… and i “finish up” in the middle. In the end, i have all the steps. the fact i solve them out of order? doesnt matter when i am done.
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in real life? MOST people seem to find me “intelligent… but eccentric”
and i can live with that. and so can my CAT.