Flat spring type filter holder

[Features]
· A holder for holding square and round filters.
· Can be fitted with up to four filters with external diameters of ø50 mm.
· Filters are fixed by inserting them from the top whereupon the leaf spring will push them against the reference surface.
· As the tilt of the filter (even when replacing them) remains constant in relation to the optical axis, the optical axis will not shift dramatically.
· The filters will not abut against each other.
· The filter-contacting portion of the leaf spring is made of resin.