MidOpt - Narrow Bandwidth Interference Filters

The Bi Series is designed for use with laser diodes. Bi Series are popular for life science and laser analysis applications where only discrete wavelengths need to be passed to maximize system performance.

Key Features

  • 20-35nm FWHM; Narrow bandwidth
  • High transmission ≥85%
  • Designed for use with laser diodes
  • Ideal wavelength separation when multiple light sources of similar wavelengths are present
  • Reflective, mirror-type surface that helps minimize thermal effects Available in sizes up to 79.5mm sq.

Find the right model for your needs

Use the filters below to narrow down your selection based on your application requirements

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Product Name Filter type Filter thread Useful Range (nm) Cut-on wavelength Cut-off wavelength Bandwidth (FWHM) Manufacturer Dimension (height, mm) Dimension (width, mm)
MIDOPT FIL BI808/37.5
 bandpass M37.5 x 0.5 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI550/35.5
 bandpass M35.5 x 0.5 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI808/27
 bandpass M27 x 0.5 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI660/62
 bandpass M62 x 0.75 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI632/C-MOUNT
 bandpass C-Mount 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/27
 bandpass M27 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI405/C-MOUNT
bandpass C-Mount 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI660/43
 bandpass M43 x 0.75 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/40.5
 bandpass M40.5 x 0.5 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI405/52
 bandpass M52 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI405/35.5
 bandpass M35.5 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI550/C-MOUNT
 bandpass C-Mount 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI550/49
 bandpass M49 x 0.75 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI660/C-MOUNT
 bandpass C-Mount 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/49
 bandpass M49 x 0.75 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI808/49
 bandpass M49 x 0.75 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI808/C-MOUNT
 bandpass C-Mount 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI850/30.5
 bandpass M30.5 x 0.5 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI405/55
 bandpass M55 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI520/62
 bandpass M62 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI405/25.5
 bandpass M25.5 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI632/30.5
 bandpass M30.5 x 0.5 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI405/30.5
 bandpass M30.5 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI808/72
 bandpass M72 x 0.75 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI850/72
 bandpass M72 x 0.75 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI632/72
 bandpass M72 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/C-MOUNT
 bandpass C-Mount 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI405/37.5
 bandpass M37.5 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI405/24 GLASS
 bandpass No Filter Thread 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI832/C-MOUNT
 bandpass C-Mount 822 - 846 822 nm 846 nm 40 Midwest Optical N/A N/A
MIDOPT FIL BI405/27
 bandpass M27 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI450/C-MOUNT
 bandpass C-Mount 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI632/67
 bandpass M67 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI405/40.5
 bandpass M40.5 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI632/49
 bandpass M49 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/27
 bandpass M27 x 0.5 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI520/C-MOUNT
 bandpass C-Mount 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI660/34
 bandpass M34 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/20 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI520/35.5
 bandpass M35.5 x 0.5 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI450/35.5
 bandpass M35.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI450/58
 bandpass M58 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI660/30.5
 bandpass M30.5 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI450/37
 bandpass M37 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/37
 bandpass M37 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI650/C-MOUNT
 bandpass C-Mount 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI450/72
 bandpass M72 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/40.5
 bandpass M40.5 x 0.5 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI632/51 GLASS
bandpass No Filter Thread 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI450/27
 bandpass M27 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/30.5
 bandpass M30.5 x 0.5 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI450/22.5
 bandpass M22.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI450/25.5
 bandpass M25.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI632/35.5
 bandpass M35.5 x 0.5 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI1300/30.5
 bandpass M30.5 x 0.5 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI808/52
 bandpass M52 x 0.75 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI725/C-MOUNT
 bandpass C-Mount 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI725/25.5
 bandpass M25.5 x 0.5 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI808/25.5
bandpass M25.5 x 0.5 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI660/25.5
 bandpass M25.5 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI650/25.5
 bandpass M25.5 x 0.5 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI550/25.5
 bandpass M25.5 x 0.5 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI520/49
 bandpass M49 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI650/27
 bandpass M27 x 0.5 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI632/27
 bandpass M27 x 0.5 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI808/55
 bandpass M55 x 0.75 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/72
 bandpass M72 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI520/27
 bandpass M27 x 0.5 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI660/11.5 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/12 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/62
 bandpass M62 x 0.75 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI660/40.5
 bandpass M40.5 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI632/40.5
 bandpass M40.5 x 0.5 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI725/50 GLASS
 bandpass No Filter Thread 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI725/72
 bandpass M72 x 0.75 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI450/30.5
 bandpass M30.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI632/46
 bandpass M46 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/24.4 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI520/25.5
 bandpass M25.5 x 0.5 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI725/67
 bandpass M67 x 0.75 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI632/62
 bandpass M62 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI405/13 GLASS
 bandpass No Filter Thread 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI405/46
 bandpass M46 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI450/46
 bandpass M46 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI660/34 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI450/34 GLASS
 bandpass No Filter Thread 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/34 GLASS
 bandpass No Filter Thread 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI632/25.5
 bandpass M25.5 x 0.5 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI405/25 GLASS
 bandpass No Filter Thread 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI405/50 GLASS
 bandpass No Filter Thread 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI550/25 GLASS
 bandpass No Filter Thread 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI405/49
 bandpass M49 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI450/32.7 GLASS
 bandpass No Filter Thread 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI725/40.5
 bandpass M40.5 x 0.5 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI660/35.5
 bandpass M35.5 x 0.5 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/25.4 GLASS
 bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/17.8 GLASS
bandpass No Filter Thread 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI1450/58
 bandpass M49 x 0.75 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI850/12 GLASS
 bandpass No Filter Thread 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI1450/30.5
 bandpass M30.5 x 0.5 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1300/35.5
 bandpass M35.5 x 0.5 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI660/37
 bandpass M37 x 0.75 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI550/27
 bandpass M27 x 0.5 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI450/37.5
 bandpass M37.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI650/35.5
 bandpass M35.5 x 0.5 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI685/35.5
 bandpass M35.5 x 0.5 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI685/C-MOUNT
 bandpass C-Mount 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI405/34
 bandpass M34 x 0.5 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI905/27
 bandpass M27 x 0.5 895 - 915 895 nm 915 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI725/27
 bandpass M27 x 0.5 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI450/40.5
 bandpass M40.5 x 0.5 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI525/40.5
 bandpass M40.5 x 0.5 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI1550/35.5
 bandpass M35.5 x 0.5 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI385/35.5
 bandpass M35.5 x 0.5 370 - 390 370 nm 390 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI615/30.5
bandpass M30 x 0.75 605 - 620 605 nm 620 nm 23 Midwest Optical N/A N/A
MIDOPT FIL BI450/39.5 GLASS
 bandpass No Filter Thread 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI405/62
 bandpass M62 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI550/62
 bandpass M62 x 0.75 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI450/62
 bandpass M62 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI850/37.5
 bandpass M37.5 x 0.5 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI405/43
 bandpass M43 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI850/25.5
 bandpass M25.5 x 0.5 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI615/C-MOUNT
 bandpass C-Mount 605 - 620 605 nm 620 nm 23 Midwest Optical N/A N/A
MIDOPT FIL BI940/30.5
 bandpass M30.5 x 0.5 930 - 952 930 nm 952 nm 32 Midwest Optical N/A N/A
MIDOPT FIL BI1450/35.5
 bandpass M35.5 x 0.5 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI405/77
 bandpass M77 x 0.75 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI550/77
 bandpass M77 x 0.75 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI650/77
 bandpass M77 x 0.75 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI632/77
 bandpass M77 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI660/77
 bandpass M77 x 0.75 650 - 665 650 nm 665 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI808/77
 bandpass M77 x 0.75 798 - 820 798 nm 820 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI850/77
 bandpass M77 x 0.75 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI1300/40.5
 bandpass M40.5 x 0.5 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1450/40.5
 bandpass M40.5 x 0.7 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1550/40.5
 bandpass M40.5 x 0.5 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI725/34
 bandpass M34 x 0.5 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI385/25.5
 bandpass M25.5 x 0.5 370 - 390 370 nm 390 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI615/40.5
 bandpass M40.5 x 0.7 605 - 620 605 nm 620 nm 23 Midwest Optical N/A N/A
MIDOPT FIL BI550/39.5 GLASS
 bandpass No Filter Thread 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI685/39.5 GLASS
 bandpass No Filter Thread 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI550/30.5
 bandpass M30.5 x 0.5 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI725/46
 bandpass M46 x 0.75 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI1300/58
 bandpass M58 x 0.75 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI830/35.5
 bandpass M35.5 x 0.75 810 - 850 810 nm 850 nm 50 Midwest Optical N/A N/A
MIDOPT FIL BI832/35.5
 bandpass M35.5 x 0.5 822 - 846 822 nm 846 nm 40 Midwest Optical N/A N/A
MIDOPT FIL BI525/C-MOUNT
 bandpass C-Mount 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI1450/52
 bandpass M52 x 0.75 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI725/77
 bandpass M77 x 0.75 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI780/C-MOUNT
 bandpass C-Mount 765 - 795 765 nm 790 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI632/58
 bandpass M58 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/43
 bandpass M43 x 0.75 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI650/37.5
 bandpass M37.5 x 0.75 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI1450/55
 bandpass M55 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI385/34
 bandpass M34 x 0.5 370 - 390 370 nm 390 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI1450/C-MOUNT
 bandpass C-Mount 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI615/25.5
 bandpass M25.5 x 0.5 605 - 620 605 nm 620 nm 23 Midwest Optical N/A N/A
MIDOPT FIL BI1550/C-MOUNT
 bandpass M25.4 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1300/C-MOUNT
 bandpass M25.4 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1450/27
 bandpass M27 x 0.5 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI725/58
 bandpass M58 x 0.75 717 - 732 717 nm 732 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI750/C-MOUNT
 bandpass C-Mount 740 - 765 740 nm 765 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI350/30.5
 bandpass M30.5 x 0.5 344 - 358 344 nm 358 nm 20 Midwest Optical N/A N/A
MIDOPT FIL BI1300/27
 bandpass M27 x 0.5 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1550/27
 bandpass M27 x 0.5 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/52
 bandpass M52 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI830/25.5
 bandpass M25.5 x 0.5 810 - 850 810 nm 850 nm 50 Midwest Optical N/A N/A
MIDOPT FIL BI905/C-MOUNT
 bandpass C-Mount 895 - 915 895 nm 915 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI525/67
 bandpass M72 x 0.75 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI850/8X1 GLASS
 bandpass No Filter Thread 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI650/8X1 GLASS
 bandpass No Filter Thread 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI525/58
 bandpass M58 x 0.75 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI525/25.5
 bandpass M25.5 x 0.5 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI525/30,5
 bandpass M30.5 x 0.5 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI525/19 GLASS
 bandpass No Filter Thread 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI632/52
 bandpass M52 x 0.75 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI350/C-MOUNT
 bandpass C-Mount 344 - 358 344 nm 358 nm 20 Midwest Optical N/A N/A
MIDOPT FIL BI385/C-MOUNT
 bandpass C-Mount 370 - 390 370 nm 390 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI905/62
 bandpass M62 x 0.75 895 - 915 895 nm 915 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI525/55
 bandpass M58 x 0.75 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI650/55
 bandpass M77 x 0.75 643 - 665 643 nm 665 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI450/55
 bandpass M55 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI405/22 GLASS
 bandpass No Filter Thread 400 - 415 400 nm 415 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI850/22 GLASS
 bandpass No Filter Thread 845 - 860 845 nm 860 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI1300/50 GLASS
 bandpass No Filter Thread 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1450/50 GLASS
 bandpass No Filter Thread 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1550/50 GLASS
 bandpass No Filter Thread 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI525/27
 bandpass M27 x 0.5 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI685/27
 bandpass M27 x 0.5 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI615/27
 bandpass M27 x 0.5 605 - 620 605 nm 620 nm 23 Midwest Optical N/A N/A
MIDOPT FIL BI1550/30.5
 bandpass M30.5 x 0.5 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI550/67
 bandpass M67 x 0.75 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI1450/43
 bandpass M43 x 0.75 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI940/27
 bandpass M27 x 0.5 930 - 952 930 nm 952 nm 32 Midwest Optical N/A N/A
MIDOPT FIL BI385/27
 bandpass M27 x 0.5 370 - 390 370 nm 390 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI350/52
 bandpass M52 x 0.75 344 - 358 344 nm 358 nm 20 Midwest Optical N/A N/A
MIDOPT FIL BI550/52
 bandpass M52 x 0.75 535 - 558 535 nm 558 nm 33 Midwest Optical N/A N/A
MIDOPT FIL BI750/72
 bandpass M72 x 0.75 740 - 765 740 nm 765 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI750/58
 bandpass M58 x 0.75 740 - 765 740 nm 765 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI520/39
 bandpass M39 x 0.75 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI520/39 GLASS
 bandpass No Filter Thread 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI685/39 GLASS
 bandpass No Filter Thread 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI905/55
 bandpass M55 x 0.75 895 - 915 895 nm 915 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI940/55
 bandpass M55 x 0.75 930 - 952 930 nm 952 nm 32 Midwest Optical N/A N/A
MIDOPT FIL BI525/46
 bandpass M46 x 0.75 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI1550/55
 bandpass M55 x 0.75 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI905/25,5
 bandpass M25.5 x 0.5 895 - 915 895 nm 915 nm 30 Midwest Optical N/A N/A
MIDOPT FIL BI632/25,4 GLASS
 bandpass No Filter Thread 625 - 640 625 nm 640 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI685/37
 bandpass M37 x 0.5 675 - 692 675 nm 692 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI1450/37.5
 bandpass M37 x 0.5 1440 - 1460 1440 nm 1460 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI1300/37.5
 bandpass M37.5 x 0.5 1290 - 1310 1290 nm 1310 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI525/43
 bandpass M43 x 0.75 518 - 538 518 nm 538 nm 28 Midwest Optical N/A N/A
MIDOPT FIL BI450/43
 bandpass M43 x 0.75 445 - 465 445 nm 465 nm 35 Midwest Optical N/A N/A
MIDOPT FIL BI520/50 GLASS
 bandpass No Filter Thread 515 - 525 515 nm 525 nm 25 Midwest Optical N/A N/A
MIDOPT FIL BI1550/34
 bandpass M34 x 0.5 1540 - 1560 1540 nm 1560 nm 35 Midwest Optical N/A N/A

Why choose MidOpt - Narrow Bandwidth Interference Filters?

Transmissive in defined wavelength ranges

Bandpass filters allow only a narrow wavelength range to pass and enable image results with optimal contrast.

High transmission

A high-quality anti-reflective coating ensures maximum transmission.

Wide range of variants

The MidOpt bandpass filters are available in UV, Vis and NIR passbands.

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