Sourcing inexpensive near IR pass filters.

[David_Campen]

I want near IR pass filters with a cutoff at about 700 nm (720 nm would be even better). These plastic filters from Edmund have about the correct cutoff and price, I would like something similar in glass. Any ideas?
http://www.edmundoptics.com/optics/o...s-filters/1918

[purduephotog]

I want near IR pass filters with a cutoff at about 700 nm (720 nm would be even better). These plastic filters from Edmund have about the correct cutoff and price, I would like something similar in glass. Any ideas?
http://www.edmundoptics.com/optics/o...s-filters/1918

Cheap and glass do not typically go together. Your best bet is to find the long pass filters and cut them down. I've looked, and to the best of my knowledge you won't find anything in glass at that price point- figure to pay at least 10x more.