Changchun New Industries Optoelectronics Technology Co., Ltd.
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Tel: +86-431-85603799 / 89216078
国内: 0431-87020257 / 89216068
Fax:    +86-431-87020258

Linear Variable Long Wave Pass Filter


The thickness of the coating layer is not equal on the lens, and the long wave pass cutoff range shows a gradual change result on the lens. Commonly used in cutoff of grating multistage diffraction light, putting before CCD of optical fiber spectrometer. The quartz substrate was coated by ion sputtering to achieve minimum autofluorescence and high laser damage threshold.
CNI provide standard model size is 41.4mm×9.5mm×1mm.

        Example of application


Spectrometer structure diagram

1. Connector 5. Focusing mirror
2. Entrance slit 6. Continuously variable order sorting filter
3. Collimating mirror 7. Line scan detector (CCD)
4. Grating    


        Test curve

Long wave pass filter


Addr: No.888 Jinhu Road High-tech Zone,Changchun 130103, P.R.China

Tel:+86-431-85603799     Fax:+86-431-87020258     E-mail: