Sell Colour Glass Filter

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Neutral filter glass

They are named based on the average transmissivity characteristics in 400nm to 700nm wavelength with 2mmthick sampler is 70%, then it's named as ZAB70. And there are ten types of glasses in this part. But three types of them(ZAB65, ZAB30, ZAB5) are tested in 440nm-660nm wavelength.

Material: Color glass
Dimension Tolerances:+0, -0.10mm
Thickness Tolerances:10.20mm
Surface Quality: 60-40 scratch and dig
Flatness: l ambda per 25mm@633nm
Parallelism:3-5arc minute
Bevels:<0.25mm W 450
Coating: Upon requirement