Tag Archives: optical filters

Chroma’s TopNotch Filters Combine Several Features

TopNotch™ filters from Chroma Technology combine several high performance features, all in one notch filter: Narrow notch (3% of CWL), rejects only the intended wavelengths Extra-wide transmission range (350–1600 nm) with approximately 95% T Extra-steep transition slopes from blocking to transmission Relatively high blocking level, > 6 nm at > OD 6, providing flexibility for variable … Continue reading

August 14, 2022 Blog, Chroma Technology, Optics

Filter Specs vs Functional Specs – The Pitfall of Double Margining

In designing a filter solution, the filter manufacturer takes the values requested by the user and adds additional design margin to account for both functional effects (such as wavelength shift due to angle variation, thermal induced wavelength shift, etc.) and filter manufacturing effects (such as edge steepness, non-uniformity, wavelength targeting – see Iridian’s technical note … Continue reading

August 4, 2022 Blog, Iridian Spectral Technologies, Optics

Multispectral Imaging in the SWIR with Optical Filters

Hyperspectral imaging is a powerful tool, enabling differentiation of multiple targets in highly dynamic environments. In some cases, it is the only solution. However, many machine vision applications can be addressed with multispectral techniques that are generally less expensive than more complex hyperspectral systems. On Wednesday, July 20, join Principle Product Engineer John Atkinson of … Continue reading

July 17, 2022 Blog, Chroma Technology, Optics

Wavelength-Selective Optical Filters for PCR Instruments

Webinar Title: Wavelength-Selective Optical Filters: Providing More Signal and Less Background to PCR Instruments Date: Thu 7 Jul 2022 Time: 13:00 EDT (20:00 Israel time) Register for this webinar here. About This Webinar Engineers face many unique challenges when creating polymerase chain reaction (PCR) instrumentation. These challenges are seen in both the qualitative detection of … Continue reading

June 27, 2022 Blog, Iridian Spectral Technologies, Optics