-
1064 nm Laser Line Filter, 3 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | FL-1064-3-25
CWL
1064 nm
CWL Tolerance
± 0.6 nm
FWHM
3 nm
FWHM Tolerance
± 0.7 nm
Minimum Peak Transmission
45
Blocking
≥ 4 OD
Blocking Range
X-ray – 1200 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1000 – 1099 nm
-
1310 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1310-12-25
CWL
1310 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
40
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1300 – 1399 nm
-
1320 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1320-12-25
CWL
1320 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
40
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1300 – 1399 nm
-
1330 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1330-12-25
CWL
1330 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
40
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1300 – 1399 nm
-
1340 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1340-12-25
CWL
1340 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
40
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1300 – 1399 nm
-
1480 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1480-12-25
CWL
1480 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
35
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1400 – 1499 nm
-
1490 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1490-12-25
CWL
1490 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
35
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1400 – 1499 nm
-
1510 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1510-12-25
CWL
1510 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
35
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1500 – 1599 nm
-
1520 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1520-12-25
CWL
1520 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
35
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1500 – 1599 nm
-
1530 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
Bandpass Filter Specifications | F-1530-12-25
CWL
1530 nm
CWL Tolerance
± 2 nm
FWHM
12 nm
FWHM Tolerance
± 2.4 nm
Minimum Peak Transmission
35
Blocking
≥ 4 OD
Blocking Range
200 – 3000 nm
Size (mm)
25.0 mm dia.
Size Tolerance
+0, -0.1 mm
Thickness
7.5 mm
Thickness Tolerance
+0, -0.2 mm
Clear Aperture
21.0 mm
Mount
Aluminum, Black Anodized
Ring Marking
CWL, FWHM, Light Direction
Specification Temperature
23˚ C
Operating Temperature Range
-50° C to +70° C
Humidity Resistance
MIL-810-810E, Method 507.3, 5 Cycles
Optical Quality
Commercial
CWL (Range)
1500 – 1599 nm
Bandpass Filters
Home » Optical Filters » Bandpass Filters
Optometrics
Bandpass Filters
Bandpass Filters
A bandpass filter is an inexpensive optical filter used as a wavelength selector that allows transmission of a predetermined wavelength while rejecting or blocking other wavelengths. Along with our wide selection of standard infrared filters, Optometrics designs and manufactures custom bandpass filters for instrument manufacturers world wide.
- Clinical chemistry instrumentation
- Spectral radiometry
- Environmental testing
- Colorimetry
- Elemental and laser line separation
- Flame photometry
- Color separation
- Fluorescence
- Immunoassays
Optical Bandpass Filter – Typical Transmission Curve

Transmission Curves are graphs or mathematical functions that characterize optical filters. Typically expressed as the percent or fraction of light transmitted versus wavelength.
- Bandwidth is a range of wavelength that specifies the transmitted part of the spectrum.
- Central Wavelength (CWL) is the midpoint wavelength of the bandwidth.
- Peak Transmittance is the maximum percentage of light transmission through the filter. It is often centered at the CWL, but many filters have fairly flat transmittance across the bandwidth.
- Half Bandwidth (HBW) or Full Width-Half Maximium (FWHM) is the wavelength range that characterizes a bandpass filter. It is bound by the wavelengths where transmittance is half (50%) that of the peak transmission.
- Upper and Lower Blocking Regions are the ranges of wavelengths where the light is attenuated.
Product SKUs
Product Listing
Reflecting Transmitting Ratio
Cut-On Wavelength
Cut-Off Wavelength
CWL
337 nm
(2)
340 nm
(1)
350 nm
(1)
360 nm
(1)
365 nm
(2)
370 nm
(1)
394 nm
(1)
415 nm
(1)
436 nm
(1)
442 nm
(1)
450 nm
(1)
458 nm
(1)
467 nm
(1)
480 nm
(1)
486 nm
(2)
488 nm
(2)
490 nm
(1)
492 nm
(2)
500 nm
(2)
505 nm
(2)
508 nm
(1)
510 nm
(1)
515 nm
(2)
520 nm
(1)
530 nm
(1)
532 nm
(1)
535 nm
(2)
540 nm
(1)
546 nm
(2)
550 nm
(3)
560 nm
(1)
568 nm
(2)
570 nm
(1)
580 nm
(1)
589 nm
(2)
600 nm
(3)
610 nm
(1)
620 nm
(1)
630 nm
(1)
632 nm
(2)
635 nm
(1)
636 nm
(2)
640 nm
(1)
647 nm
(1)
650 nm
(1)
671 nm
(1)
676 nm
(1)
694 nm
(1)
700 nm
(1)
766 nm
(1)
850 nm
(1)
852 nm
(1)
855 nm
(1)
880 nm
(1)
905 nm
(1)
920 nm
(1)
1064 nm
(1)
1310 nm
(1)
1320 nm
(1)
1330 nm
(1)
1340 nm
(1)
1480 nm
(1)
1490 nm
(1)
1510 nm
(1)
1520 nm
(1)
1530 nm
(1)
1540 nm
(1)
1560 nm
(1)
1570 nm
(1)
1580 nm
(1)
1590 nm
(1)
1620 nm
(1)
FWHM
3 nm
(2)
10 nm
(63)
12 nm
(15)
25 nm
(1)
70 nm
(1)
80 nm
(8)
Grooves per mm
Blaze
Groove Angle
Dispersion at Blaze
Dispersion at 250 nm
Dispersion at 500 nm
Operating Range
Substrate
Size (mm)
12.5 mm dia.
(39)
25.0 mm dia.
(51)
Thickness
7.5 mm
(90)
Clear Aperture
9.0 mm
(39)
21.0 mm
(51)
Mount
Aluminum, Black Anodized
(90)
Damage Threshold Pulsed Laser
Damage Threshold CW Laser
Input Voltage