Optolong professionally manufacture optical thin film coating filters since 1999
Manufacturing Capabilities
Customize thin film coating
- Design coating: Based on clients’ requirements/applications
- Processing waveband: Ultraviolet, Visible, near infrared, infrared band
- Processing capability: Vacuum ion assisted coating (IAD), Hard coating
- Coating types: Bandpass, longpass, shortpass, Anti-reflection, Beamsplitter, dichroic mirror
Coating technology
- Double-sided polishment substrate, good flatness and parallelism to avoid to halo/ghost image
- E-Beam gun
- Ion assisted coating, firm coating film, no wavelength shift
- Planet wheel coating fixture, wavelength consistency

Dust-free coating workshop & equipment

Optical coating is the key part of finished optical components. There are very strict requirements on environment when coating. Optolong owns class 10000 dust-free workshops. All optical filters are meticulously cleaned, coated and inspected in clean rooms.
- Coating equipment
- OPTORUN OTFC-1300
- Mars I 120
Quality Control
Optolong employs advanced spectrophotometers, measuring spectral range 190-3200nm. We perform spectral measurement of every production lot to ensure filters meet specification requirements.
- Spectrum measurement
- Shimadzu spectrophotometer
- PHOTON RT spectrophotometer
- Laser plane interferometer
- Collimator
- Goniometer

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1064/100nm Bandpass Filter
Filter Type: IR Bandpass Filter
CWL: 1064nm
FWHM: 100nm …
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254/30nm Bandpass Filter
Filter Type : UV Bandpass Filter
CWL: 254nm
FWHM: 30nm …
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340/70nm Bandpass Filter
Filter Type: UV Bandpass Filter
CWL: 340nm
FWHM: 70nm …
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415nm Dichroic Beamsplitters
Filter Type : Dichroic Mirror
Edge Wavelength: 415nm …
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470nm Dichroic Beamsplitters
Filter Type : Dichroic Mirror
Edge Wavelength: 470nm …
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480-560nm Dualband Excitation Filter
Part Number: 32012-BP480-560nm Optolong Set Graphing Individual filter: The 480-560nm Dualband Excitation Filter is part of PN 31012 DualBand Green/Orange,the price listed is for standard sizes only diameter 25mm*5.0mm,optolong also customized size(circle)φ4-φ50,size(square)55×55,3.5×3.5, welcome to contact for pricing if you need. Optical Specifications Filter Type 480-560nm Dualband Excitation Filter Coating Type Hard Coating Angle of Incidence 0°±5° Exciter 480-560nm Transmission …
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500-580nm Dualband Dichroic Mirror
500-580nm Dualband Dichroic Mirror Part Number: 32012-DM500-580nm Optolong Set Graphing Dichroic Mirror: The 500-580nm Dualband Dichroic Mirror is part of PN 32012 Dualband Green/Orange,the price listed is for standard sizes only 36 x 25.7 x 1.05mm,optolong also customized size(circle)φ4-φ50,size(square)55×55,3.5×3.5, welcome to contact for pricing if you need. Optical Specifications Filter Type 500-580nm Dualband Dichroic Mirror Coating Type Hard Coating …
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510nm Dichroic Beamsplitters
Filter Type : Dichroic Mirror
Edge Wavelength: 510nm …
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520nm Dichroic Beamsplitters
Filter Type : Dichroic Mirror
Edge Wavelength: 520nm …
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525-605nm Dualband Emission Filter
Part Number: 32012-BP525-605nm Optolong Set Graphing Individual filter: The 525-605nm Dualband Emission Filter is part of PN 30012 Dualband Green/Orange,the price listed is for standard sizes only diameter 25mm*3.5mm,optolong also customized size(circle)φ4-φ50,size(square)55×55,3.5×3.5, welcome to contact for pricing if you need. Optical Specifications Filter Type 525-605nm Dualband Emission Filter Coating Type Hard Coating Angle of Incidence 0°±5° Emitter …
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