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20BPF10-850 50.8 x 50.8 mm Square Bandpass Filter 850nm

20BPF10-850 50.8 x 50.8 mm Square Bandpass Filter 850nm

Type
Filter
Subtype
Bandpass Filter
Brand
MKS/Newport
Product webpage
MKS/Newport products in the 3DOptix catalog

Properties

Shape
Rectangular
Cut Off Frequency
856.5 nm
Cut On Frequency
843.5 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4524982859534705
λ
850 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

20BPF10-850 50.8 x 50.8 mm Square Bandpass Filter 850nm

The 20BPF10-850 is a high-quality Bandpass Filter, offered by the renowned optical components manufacturer, MKS/Newport. This filter is specifically designed for use in systems operating at the 850nm wavelength, making it an ideal choice for applications in this spectral region.

The filter is rectangular in shape, with a base material identified as 'uvfs mal- 1965'. It measures 50.8 x 50.8 mm in width and height, respectively, and has a thickness of 3.3528 mm. This robust construction ensures durability and stability, making it suitable for various optical setups.

The 20BPF10-850 features precise cut-on and cut-off wavelengths of 843.5nm and 856.5nm, respectively, with a central wavelength (CWL) of 850nm. This narrow bandwidth is crucial for applications that require high spectral selectivity and rejection of out-of-band wavelengths.

The filter's coating is another notable feature. Both the front and back surfaces are coated with the 'new bpf10-850' coating, which is specifically designed to enhance the filter's performance at the 850nm wavelength. This coating ensures high transmission within the passband and low reflection at the boundaries, contributing to the overall efficiency and quality of the optical system.

The filter's shape is described as 'Thin Lens', suggesting that it may have some degree of optical power, although this is not explicitly stated in the provided data. Therefore, it's essential to consider this when integrating the filter into an optical system.

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