589.2-2 OD4 Ultra Narrow Bandpass



589.2-2 OD4 Ultra Narrow Bandpass


Ultra Narrow filters bring new levels of performance to filters with very narrow bandwidth responses. Typically fully blocked to OD4 or OD6 and < 3 nm wide at FWHM, Alluxa Ultra Narrow Filters are uniquely steep and accurate. All Alluxa Ultra Narrow filters are fabricated with a proprietary durable, hard coating process. Even very narrow ( < 0.5 nm at FWHM ) Ultra Narrow filters typically have transmission values > 90%.


Item Number 7257
Angle of Incidence 0 Degrees
Center Wavelength 589.2 nm Nominal
FWHM < 2.3 nm
Transmission Band(s) 589.2 nm > 95% T Absolute
Blocking Level OD4
Blocking Range(s)* OD4: 400 to 576 nm, 603 to 1400 nm
Filter Design Multi-Cavity
Substrate Type Borofloat®
Dimensions 25.0 mm Diameter
Filter Thickness 2.0 mm
Assembly Type Anodized Aluminum Ring
Assembly Thickness 3.5 mm
*Auxiliary blocking typical based on the displayed spectrum.
†For filters with less than 1nm bandwidth, measurement limitations may result in slight transmission variation. Please contact us for more information.

Availability: In stock