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Filters are designed by their manufacturers to transmit or absorb different wavelengths of light. And they are widely used in scientific experiments and industrial applications where that change is necessary. Color Separation Filter, Neutral Density Filter, Filter, Short/Long Wave Pass Filter, Bandpass Filter and Interference Filter
Specification of our color filter as follow:
Material: Filter Glass, BK7
Dimension: 4mm-160mm - 0.20mm
Squares/Rectangles: 1mm-165mm
Thickness: 0.5mm-4mm
Thickness tolerance: +/-0.01mm-0.1mm
Paralism: Up to 3 Arc minutes
Edges: Fine
Ground Flatness: Up to Lambda/10
Surface quantity: 80/50-20/10 Scratch/Dig
Specification of our color filter as follow:
Material: Filter Glass, BK7
Dimension: 4mm-160mm - 0.20mm
Squares/Rectangles: 1mm-165mm
Thickness: 0.5mm-4mm
Thickness tolerance: +/-0.01mm-0.1mm
Paralism: Up to 3 Arc minutes
Edges: Fine
Ground Flatness: Up to Lambda/10
Surface quantity: 80/50-20/10 Scratch/Dig
| Range of diameter | Dia.0.7mm-Dia.400mm |
| Range of curve radius | R1.5-R∞ etc. |
| Tolerance of diameter | +/-0.1, +/-0.01, +/-0.005 etc. |
| Surface accuracy | λ , 1/2λ , 1/4λ , 1/10λ etc. |
| Tolerance of Thickness | +/-0.1, +/-0.05, +/-0.01 etc. |
| Centration | +/-2′,+/-1′ etc. |
| Aperture N | 5, 1 etc. |
| Irregularity ΔN | 2, 1, 0.5, 0.2 etc. |
| Surface quality | 60/40, 40/20, 20/10, 10/5 etc. |