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MidOpt published in Photonics Vision Spectra, Winter 2022

Selecting the Right Filter Is Critical to SWIR Imaging

by James Gardiner

Shortwave IR (SWIR) imaging has seen a surge in use in recent years, playing an important role in imaging agricultural products, food, pharmaceuticals, and high-heat glass and metal manufacturing. Given the strong absorption of moisture within the SWIR range, users can check fill levels in opaque bottles, visualize underlying features such as anti-counterfeiting security codes, or use the technology for a wide range of other applications.

Innovations in sensor technology, availability, and cost have opened the door for more and more applications that can be addressed with NIR and SWIR. Just like with monochrome and color cameras, picking the right filter can mean the difference between a poor image and an acceptable one.

One of the most critical advancements has been in innovation sensor technology. Recent SWIR cameras have integrated both quantum dot SWIR sensors and Sony’s new IMX990 and IMX991 SenSWIR sensors, which are unique in that they are sensitive to the visible, NIR, and SWIR portions of the spectrum.

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MidOpt Receives ISO Certification

Palatine, Ill. (May 11, 2021) – MidOpt® has received ISO 9001:2015 certification, the world’s most widely recognized quality management standard. In order to receive ISO Certification, MidOpt® underwent a strict evaluation process that reviewed our business practices and product quality guidelines.

Achieving ISO certification shows our commitment to effectively providing a quality management system that will continue to improve our products, services, and internal processes. We look forward to continuing to work with our global partners. Thank you for choosing MidOpt®.

BP450 and BN450 Indigo Bandpass Filter by MidOpt

New MidOpt® BP450 Indigo Bandpass Filter and BN450 Narrow Indigo Bandpass Filter

Palatine, Ill.

Enhance viewing of subjects illuminated by a 450nm blue LED or laser light source.

MidOpt® introduces the BP450 Indigo Bandpass and the BN450 Narrow Indigo Bandpass, two new filters designed for multi-application use.

The MidOpt BP450 Indigo Bandpass Filter is commonly used in fluorescence applications with an emission ranging from (430-460nm). It is suitable for use with LED or laser diodes with higher than normal ambient lighting conditions.

Blue LED Illumination and UV Excited Blue Fluorescence Applications:

The BP450 is an excellent choice for enhancing viewing of subjects illuminated by a 450nm blue LED. For UV Fluorescence applications, its broad bandwidth and high peak transmission results in significantly brighter, higher contrast images.

Blue Laser Applications:

The BN450 Narrow Indigo Bandpass is a great choice for use with 3D blue laser triangulation systems used for measuring position, distance, level, displacement, proximity and profiles of objects. This also includes industrial process automation and control, as well as for test and measurement in process monitoring and validation. It is also highly-effective when used in applications with higher than normal ambient lighting conditions.

StableEDGE® and A/R-Coated:

As with all MidOpt Bandpass filters, the BP450 and BN450 are both manufactured with MidOpt StablEDGE® technology making them less sensitive to angle of incidence variations than traditional interference filters. They are also both coated with the MidOpt BBAR Anti-reflection coating. Both filters are available with standard lens mounts ranging from 13.25mm to 105mm. They are also available in unmounted sizes up to a 165mm square