For over 30 years, Midwest Optical Systems has been developing expertise in optical design, fabrication and inspection. The company offers a variety of options for protective windows, which are tailored to a wide range of applications and budgets.
Bandpass filters are used when imaging to block unwanted ambient light, while passing only the necessary light output to increase contrast and resolution. Interfering light is typically caused by the sun or overhead lighting in a building or factory. A bandpass filter will block this light without sacrificing the vision system’s monochromatic light. But not all bandpass filters function the same.
Achieve a backlight effect in space-constrained applications with MidOpt Backlight fluoreSHEET™
Backlights provide sharp contrast to outline a shape, edges or an opening. But applications with space constraints may dictate backlight utilization.
- Permits viewing at a 90° angle
- Helpful for applications with space constraints
- Attachments can be adapted to smaller lenses by using step-up rings
- Assembly locks in position with a thumb screw, guarding against movement due to shock or vibration
- To avoid vignetting, use with longer focal length lenses (16mm or higher)
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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
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