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  • Recently, some customers feedbacked that the filter is difficult to install. We take this opportunity to briefly understand the fluorescence filter sets, which include excitation filters, dichroic mirrors and emission filters. One filter each. In fact, it is really not difficult to install the filter correctly and use it normally. Do not believe? You can …
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  • Optical filters and it’s basic parameters …
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  • What’s need to be cared when you select fluorescence filters ! …
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  • OEM Capability

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    Optical filters are the essential optical components of many applications. We served our client based on the application. The main application can be divided into three categories. Biotech instrument and analytical instrument which is highly related to life science and bio research. The instrument includes fluorescence microscope, PCR analyzer, Microplate Reader, Raman spectroscopies, invivo imager, …
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  • Why choose OPTOLONG With a foundation history since 1999, OPTOLONG has been working and supporting our clients’ optical filter needs professionally. We keep satisfying our client’s requirements on high-volume OEM requirements or small quantity prototypes. With the company’s additional expansion, we moved to a new 2000 square warehouse and imported one new coating machine OTFC-1300 …
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  • ION beam assisted thin film coating (IAD)Optolong applies ION beam-assisted evaporation (IAD) and e-beam thermal evaporation since 1999. ION-assisted technology enables us to design and manufacture the most sophisticated filters which need multi-layers deposition.ION beam-assisted coating art and the coating machine OTFC-1300 from Optorun Japan enable filters to block the unwanted wavelength deep above OD7 …
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  • Sales FAQ
    Q: How to order or how is the enquiry process?
    A: There is two way to contact us. By mail and by phone. …
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  • 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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  • 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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  • Why do we need a light pollution suppression filter? …
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