776 nm blocking edge BrightLine® long-pass filter

Product Code Description Lead Time Price Quantity Buy / Get Quote
FF01-776/LP-23.3-D 776 nm blocking edge BrightLine® long-pass filter 1-2 weeks £341.00
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Angle of Incidence:

0 ± 5 °

Blocking Band:

OD > 3.5 776.5 nm

Blocking Band:

ODavg > 1 200 – 400 nm

Blocking Band:

ODavg > 10 731 – 764 nm (Design specification – measurements are noise-floor limited)

Blocking Band:

ODavg > 2 400 – 545 nm

Blocking Band:

ODavg > 5 545 – 718.6 nm

Clear Aperture:

≥ 22 mm

Cone Half-angle:

Edge Wavelength:


Filter Effective Index:

1.72 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 Long Pass Edge Filter

Semrock Filter Family:

BrightLine® Fluorescence Filters




23.3 x 2.0 mm

Substrate Thickness:


Substrate Type:

low-autofluorescence optical quality glass

Surface Quality (Scratch-Dig):


Transmission Band:

Tavg > 93% 789 – 1200 nm

Transverse Tolerance, Mounted:

+ 0.0 / - 0.1 mm

Individual fluorescence long-pass and short-pass filters that have been optimized for use in a variety of fluorescence instruments. All thin-film, hard-coated construction for unsurpassed performance and reliability.


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.