Dielectric Coating Filter

FOCtek offers dielectric coating filters made of optical materials such as Colored Glass, BK7, Fused Silica, Sapphire and so on.
The dielectric coating filters include bandpass filters, dichroic filters, longpass filters and shortpass filters. The transmissive rangs of wavelength is cutomized and high transmission at specified wavelength is available upon request.

Specifications

Attribute	Specification
Material	Optical glass
Typical Diameter (Φmm)	10.0, 12.7, 15.0, 20.0, 25.4, etc.
Typical Thickness (mm)	0.2 ～ 20.0
Dimension Tolerance (mm)	±0.2 (General), +0.0/-0.05 (High Precision)
Surface Quality	80/50 (General), 40/20 (High Precision)
Wavelength (nm)	Upon request
Coating	Dielectric coated AR, HR, PR, etc.

Note for Dielectric Coating Filter:
(1). Optical glass such as Colored Glass, N-BK7, H-K9L, B270 Fused Silica, Sapphire and so on.
(2). Dielectric Coating Filter at any size with shape of quadrate, triangular, or other polygonal are available
(3). Wavelength range such as UV (200nm-399nm), VIS (400nm-700nm), IR (750nm-2500nm) is available.
(4). Please contact us for more details.

Neutral Density Filter

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