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Old 03-17-2016, 07:57 AM #1
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Default AR coated lens

Got round to building the 980nm 500mw ir illuminater, but run into a problem the lens i am using is not AR coated would this make a big difference to help with getting a sharp focus ?


AR coated 450-900nm i can get the same lens with this coating if it would help?.

Thanks in advance


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Old 03-17-2016, 08:13 AM #2
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Default Re: AR coated lens

Quote:
Originally Posted by camo304 View Post
Got round to building the 980nm 500mw ir illuminater, but run into a problem the lens i am using is not AR coated would this make a big difference to help with getting a sharp focus ?


AR coated 450-900nm i can get the same lens with this coating if it would help?.

Thanks in advance
I don't think it's possible for it to make any difference in the focus. No AR coating or AR coating for the wrong wavelength will only result in some power loss, nothing else.

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Old 03-17-2016, 08:58 AM #3
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Default Re: AR coated lens

Thanks for the reply, back to the drawing board then.
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