Filters for fluorescence analytics

LOT-QD offers a great variety of filters, beam splitters and customized filter sets for fluorescence microscopy and spectroscopy. We offer standard filters of the “D” series, steep edge filters of the “HQ” series, steep edge plus high transmission (>95%) filters of the “ET” series. For Raman spectroscopy applications we offer dielectric and holographic Notch filters. Long wave pass, short wave pass Raman edge filters are available as standard, low ripple and ultra steep low ripple versions. All these filters have a rising edge of only a few nm in width.

All filters feature excellent blocking (OD >5.0) and high transmission/reflection at the same time. For imaging applications, we provide “Image Quality” filters with superior flatness, wedge and coating characteristics.

Our dielectric notch filters eliminate the need for multiple filters for spectral noise reduction. All use hard dielectric coatings and do not require cover glass for durability. This greatly improves the transmission levels in all our filters compared to traditional ones.


Standard and high transmission laser line filters with different bandwidth laser line filters are used in all kinds of specroscopy applications and as clean-up filters.


Modified magnetron sputter-coated filter sets (the ET Series) from Chroma Technology are designed to meet the specific requirements of fluorescence microscopy for better throughput and provide more durable coatings for adverse environmental conditions.


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