About this item
These pinholes are prepared from pure copper foil, 3 mm in diameter, and 25 microns thick.
- Possess very high roundness and edge retention
- Blackened on one surface
- Mounted in black anodized aluminum discs
These grids are used in spatial filtering, controlling the diameter of light beams, creating point light sources and Image analysis.
Mounted in a recessed hole in an anodized holder, these pin holes measure 16 mm in diameter.
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