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Lens Laser
what kind of lens is better to converge the light of the laser?
hi everyone:
i want converge the laser light beam, in this case i need a proper lens.
lense type:
bi-convex lens
plano-convex lens
what do you think, which one is better?
concavo-convex lens
Most likely, the concave/convex/planar nature of your lens is irrelevant. To first order, two things go into how tight a focus you can get with a laser: the focal length and the size of the incoming beam. You want a short focal length and a large diameter incoming beam to get a tight focus. You can get a short focal length with any of those lens shapes (in at least one orientation). For example, a 5-cm plano-convex lens is going to be better than any 10-cm lens. And, obviously, the incoming beam has nothing to do with the lens.
Once you get to really short focal-length lenses or really big incoming beams, you start to have to worry about aberrations, and then lens shape (and even lens orientation) becomes more important. But unless you are designing precision optics, you probably are not going to be in that regime.
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memores optidisk laser lens cleaner unboxing
How do I clean the lens/laser on my computer?
My cd/dvd drive isn't working. I have tried EVERYTHING but a system restore and cleaning the lens. I can't buy one of those cd's that clean your lens because my drive won't spin the cd/dvd. I would need to get to the lens myself. Is this easy? I have a Compaq desktop. Thanks for any input!
if it wont spin any cds/dvds possible the motor is burnt out?as for cleaning the lens if you want to 30%vinger and 70% water is what i would use al you have to do is pull it out and take out the screwes on the bottom its just a shell case around it is fairly spimple but if you are not comfatable lets say installing ram or a psu i would not try it
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