- Joined
- Nov 2, 2012
- Messages
- 626
- Points
- 43
I've found IR-filtering glass without any issue (ebay, elsewhere) but all of it is either a large "bulk" piece, or is otherwise the wrong size. I would like to make a 6mm diameter circular piece to fit into the M9 lens barrel. All of the lens assemblies that I use are set up "backwards" i.e. the little retaining ring faces outward, so I could use a ~7mm glass piece as well.
The IR filter will be the final component in the lens assembly, and will also act as a window to keep dirt and contaminants away from the lens.
Any tools designed to efficiently cut/shape such small pieces of glass?
I'm thinking I could use a fine diamond file to slowly grind the glass piece down to size. I would use something like masking or painter's tape to cover the optical surfaces during this process, so as to protect the AR coatings and whatnot. Once the piece is a satisfactory fit, remove tape and clean with rubbing alcohol, and install.
Would that work? Is there some other tool I could go for that would allow me to reliably cut small circle or square pieces of glass?
Thanks for any input!
The IR filter will be the final component in the lens assembly, and will also act as a window to keep dirt and contaminants away from the lens.
Any tools designed to efficiently cut/shape such small pieces of glass?
I'm thinking I could use a fine diamond file to slowly grind the glass piece down to size. I would use something like masking or painter's tape to cover the optical surfaces during this process, so as to protect the AR coatings and whatnot. Once the piece is a satisfactory fit, remove tape and clean with rubbing alcohol, and install.
Would that work? Is there some other tool I could go for that would allow me to reliably cut small circle or square pieces of glass?
Thanks for any input!
Last edited: