442/647 nm Yokogawa emission filter

Product Code Description Lead Time Price Quantity Buy / Get Quote
Em01-R442/647-25 442/647 nm Yokogawa emission filter 1-2 weeks £444.00
Click and drag to zoom the X-axis. For multi-line charts, click on the legend to show/hide lines.

Compare Charts


Angle of Incidence:

0 ± 5 °

Blocking Band:

ODabs > 6 405 nm

Blocking Band:

ODabs > 6 442 nm

Blocking Band:

ODabs > 6 561 – 568 nm

Blocking Band:

ODabs > 6 638 – 647 nm

Clear Aperture:

≥ 22 mm

Cone Half-angle:

Filter Effective Index:

1.83 Understanding 'Effective Index of Refraction' neff

Filter Thickness Tolerance, Mounted:

± 0.1mm

Filter Thickness, Mounted:


Mounted / Unmounted:


Optical Damage Rating:

Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs.


Arrow on ring indicates preferred direction of propagation of light

Product Type:

BrightLine Dual-Band Bandpass Filter




25 x 3.5 mm

Substrate Thickness:


Substrate Type:

low-autofluorescence optical quality glass

Surface Quality (Scratch-Dig):


Transverse Dimensions, Diameter:


Transverse Tolerance, Mounted:

+ 0.0 / - 0.1 mm

Band 1

FWHM Bandwidth:


Guaranteed Minimum Bandwidth:

54 nm

Transmission Band:

Tavg > 90% 458 – 512 nm

Transmission Wavelength:


Band 2

FWHM Bandwidth:

109.0nm (+100 nm of varying transmission)

Guaranteed Minimum Bandwidth:

87 nm

Transmission Band:

Tavg > 90% 663 – 750 nm

Transmission Wavelength:


Combining superior performance with exceptional durability, these filters are specifically optimized for use with all Yokogawa CSU spinning-disk scan head system configurations.


Note on spectral plots:
In the past, each shipment has included a spectral plot for every filter and every lot code in the shipment. In an effort to be more eco-friendly, we will no longer be including these plots with each shipment. If you require spetral plot data, please see here for more information.