Product Description

What is Band pass filter?

The band pass filter is a filter that is adjacent to the cut-off band on both sides of the transmission characteristic band of the spectral characteristic curve. The band pass filter is roughly classified into a wide band filter and a narrow band filter according to the spectral characteristics. The two kinds of filters are usually combined, and the band pass filter is prepared by applying the principle of light wave interference. Pass filters are widely used in various fields. Bandpass filters can be classified into narrow-band filters and wide-band filters according to spectral characteristics, but there is no clear boundary for this division. Generally, filters with a relative half-width of not less than 20% are called broadband filters.

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Product Name	430nm Longpass Filter
Diameter	On your request
Diameter Tolerance	0.1~0.2mm
Transmittance Wavelength	430nm-1200nm
Transmittance	>90%
Center Wavelength	425nm±3
Cut off Wavelength	350nm-420nm

Product Name	530nm Longpass Filter
Diameter	On your request
Center Wavelength	530nm±3nm
Transmittance Wavelength	540nm-1200nm
Transmittance	>94%
Cut off Wavelength	350nm-520nm

Product Name	480nm Longpass Filter
Diameter	On your request
Center Wavelength	480nm±3nm
Transmittance Wavelength	480nm-1200nm
Transmittance	>94%
Cut off Wavelength	350nm-450nm

Product Name	560nm Longpass Filterr
Diameter	On your request
Diameter Tolerance	0.1~0.2mm
Transmittance Wavelength	560nm-1200nm
Transmittance	>94%
Center Wavelength	550nm±3
Cut off Wavelength	350nm-540nm

Characteristic :

_{a)Coating dose not change color or fall off when the temperature is changed from -70℃ to 800℃.}

_b)OD2-OD7.

_{c)Customized Size.}