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685FAP550400 400 x 550 mm Acrylic Colour Longpass Filter 685nm

685FAP550400 400 x 550 mm Acrylic Colour Longpass Filter 685nm

Type
Filter
Subtype
Longpass Filter
Brand
Knight Optical
Product webpage
Knight Optical products in the 3DOptix catalog

Properties

Shape
Rectangular
Cut Off Frequency
2200 nm
Cut On Frequency
685 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.458448271212196
λ
588 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

685FAP550400 400 x 550 mm Acrylic Colour Longpass Filter 685nm

The 685FAP550400 is a Longpass Filter, measuring 400 x 550 mm, sourced from Knight Optical. This filter is designed to transmit light at wavelengths above 685nm while blocking light at wavelengths below this point. The cut-off wavelength is specified at 2200nm, ensuring a high level of blocking efficiency.

This filter is made from UVFS MAL-1965, a type of acrylic material known for its excellent optical properties and durability. The filter features a rectangular base shape, making it suitable for a wide range of optical applications. The thickness of the filter is 1mm, providing a balance between robustness and weight.

The filter is coated with KNI 685FAP on both the front and back surfaces. This coating enhances the filter's performance, ensuring consistent transmission and blocking characteristics across the entire surface. The shape of the filter is thin lens, further enhancing its optical performance.

The filter is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website at https://www.knightoptical.com/stock/default/acrylic-colour-filter-550x400mm-685nm-long-pass.html.

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