DPReview.com is closing April 10th - Find out more

UV camera project build question

Started Sep 24, 2018 | Discussions thread
BobORama
BobORama Senior Member • Posts: 2,842
Re: Lots of issues...

Perhaps I am mis-reading your post, but you don't want an internal filter. You do want a IR-VIS-UV pass broadband window, e.g. quartz with broadband AR coatings, that make up the optical path length of having the IR cut filter. Without this, lenses will not focus to infinity and / or you will have ghosting.   Then you use an external UV short pass filter, or whatever filters you want.  .   The camera will also work for IR and general multi-spectral work.  t.

I and some of our researchers here, have had good experiences with this eBay seller, including his converted cameras and filters.    I have one of their larger UV cut filters   It is great and rejects IR and VIS > 250:1.

http://www.ebay.com/usr/image-laboratory

As for a fun DIY project, if you want something to play with, web cams are a great way to do this, as pretty much they are a bare sensor, so easily modified.  And given how bad some people's UV photography turns out, you may actually be better off.

Also, be in the lookout for old spectrophotometers ( the IR-VIS-UV type or anything with UV.   Some of them will have a lens assemblies, and this will necessarily pass UV.   Small UV lenses ( suitable for the webcam ) can be had from optics places.   Some times colleges / universities chem and bio department have heaps of this stuff hidden away and a polite request will liberate one of the broken ones.

 BobORama's gear list:BobORama's gear list
Pentax K-5 Pentax K-1 Sigma 10mm F2.8 EX DC HSM Diagonal Fisheye Pentax smc DA 18-55mm F3.5-5.6 AL WR Samyang 14mm F2.8 ED AS IF UMC +9 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow