Optical Filter Product Families

Optolong Optics Co.,ltd is the brand owner of optolong who is a manufacturer of astronomy filters, fluorescence filters. We also offer other interference filters like UV filters, visible filters and Near inferred filters, beam splitter, anti-reflection coating and optical mirrors as a OEM service.

Single Bandpass＆Single Edge Filters

Single Bandpass Filters

Longpass/Shortpass Filters

Dichroic Mirrors

Beamsplitters

Reflective Mirrors

Protective Windows

Multi Bandpass＆Multi Dichroic Filters

Multi Bandpass Filters

Multi Dichroic Mirrors

Filter Sets

Multi Band

Single Band

780/40nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 780nm FWHM: 40nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 780nm FWHM Bandwidth 40nm Transmission Tpeak>85% Blocking OD>3 Blocking Band 300-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40, 80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes …
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785/20nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 785nm FWHM: 20nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 785nm FWHM Bandwidth 20nm Transmission Tpeak>70% Blocking OD>2 Blocking Band 200-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40, 80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes …
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800/10nm Narrow Bandpass Filter

Filter Type : Narrow Bandpass Filter
CWL: 800nm
FWHM: 10nm …
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808/30nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 808nm FWHM: 30nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 808nm FWHM Bandwidth 30nm Transmission Tpeak>85% Blocking OD>2 Blocking Band 300-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40, 80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes …
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850/60nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 850nm FWHM: 60nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 850nm FWHM Bandwidth 60nm Transmission Tpeak>85% Blocking OD>2 Blocking Band 400-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40,80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes as …
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905/30nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 905nm FWHM: 30nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 905nm FWHM Bandwidth 30nm Transmission Tpeak>85% Blocking OD>2 Blocking Band 300-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40,80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes as …
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940/40nm Bandpass Filter

Filter Type : IR Bandpass Filter CWL: 940nm FWHM: 40nm Filter Type IR Bandpass Filter Coating Type Hard Coating Center Wavelength 940nm FWHM Bandwidth 40nm Transmission Tpeak>85% Blocking OD>2 Blocking Band 300-1100nm (Out of passband) AOI 0 ±5 degrees Scratch-Dig 60/40,80/50 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes as …
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Blue Dichroic Beamsplitters BDM

Filter Type : Dichroic Mirror Edge Wavelength: 500nm Filter Type Dichroic Mirror Coating Type Hard Coating Edge Wavelength 500nm Transmission Tmin>95% Transmission Band 532±8nm & 650±8nm Reflection Rmin>99% Reflection Band 470±8nm AOI 45 degrees Scratch-Dig 60/40 Substrate Fused Silica , B270 , Float Glass, Absorptive Glass Size Customize sizes as per customers demands
BX2/IX2 Cube U-MF2 for 25mm Filter

Excitation filter :Ø25mm x 5mm
Emission filter : Ø25 mm x 3.5 mm
Dichroic filter: 25.2 mm x 35.6 mm x 1.1 mm …
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BX3/IX3 Cube U-FF for 25mm Filter

Excitation filter :Ø25mm x 5mm
Emission filter : Ø25 mm x 3.5 mm
Dichroic filter: 25.2 mm x 35.6 mm x 1.1 mm …
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