NEW Filter Releases from Midwest Optical Systems

Midwest Optical Systems has introduced three new filters: 

BP450 Indigo Bandpass Filter

BP450 filters enhance viewing of subjects illuminated by a 450nm blue LED or laser light source and any UV- excited blue fluorescence emissions (420-470nm). Its broad bandwidth and high peak (T ≥90%) transmission results in significantly brighter, higher contrast images. For most machine vision UV fluorescence applications, a Bandpass filter is absolutely necessary.

bandpass filters


bandpass filters

BN450 Narrow Indigo Bandpass Filter

BN450 is commonly used in fluorescence applications with an emission ranging from (430-460nm), it is suitable for use in LED or laser diode applications with higher than normal ambient lighting conditions and is less sensitive to angle of incidence variations than traditional interference filters. The BN450 is an ideal filter for applications utilizing 450nm blue laser triangulation sensors.

bandpass filters bandpass filters

AC400 Acrylic Oleophobic-Coated UV-Block Protective Window

AC400 is a 3mm thick abrasion-, scratch-, breakage-, and solvent-resistant acrylic protective window made to withstand harsh environments. It is half the weight of comparable glass windows and additionally features external oleophobic coatings that curb fingerprint smudging. The vacuum-sputtered coatings on both surfaces are 50 times more scratch-resistant than untreated acrylic, far more durable than standard “dip” coatings, and are impervious to all types of solvents, fuels and other chemicals, including acetone, methylene chloride and MEK.

This material blocks almost all UV light while averaging greater than 98% transmission over the 450-700nm visible spectrum. This protection acrylic window is a highly effective yet economical solution for covering screens, camera enclosures and on-axis lighting modules. It is often recommended for FDA/EFSA applications where thickness is a concern and the use of glass is not permitted.

AC400 is available from stock in larger sheets with protective tape on both surfaces. Custom sizes and shapes are quickly laser cut in house. 

*Available with an oleophobic coating on one surface – P/N: AC401

For more information, please call the ALRAD Team on +44(0)1635 30345 or see the following link:  ALRAD Filters