UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.
I recently removed the IR cut filter from my camera and did not replace it with any type of clear glass. It has since lost sensitivity in the IR, which was the goal, but also focus ability in the optics. Can you explain why this is so?
CNC polished aspheric lenses offer high numerical apertures while creating diffraction-limited spot sizes and are ideal for high-precision applications.
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