87-851 12.5 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1225nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- 1250 nm
- Cut On Frequency
- 1200 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4477662539720544
- λ
- 1225 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
87-851 12.5 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1225nm
The 87-851 is a Bandpass Filter with a diameter of 12.5 mm and a thickness of 3.5 mm, designed for use in optical systems that require precise wavelength selection. Sourced from Edmund Optics, this filter features a hard coating on both the front and back surfaces, ensuring durability and resistance to scratches and environmental factors.
The filter is designed to pass wavelengths near 1225 nm, with a Cut-On wavelength of 1200 nm and a Cut-Off wavelength of 1250 nm. This specificity makes it ideal for applications that demand narrow-band transmission, such as fluorescence microscopy, spectroscopy, or any other application where specific wavelengths need to be isolated.
The filter's geometry is defined by its 12.5 mm diameter, making it compatible with a wide range of optical systems. The 3.5 mm thickness provides structural integrity while minimizing the impact on the overall optical path length.
The 87-851 is part of the UVFS MAL-1965 material family, which is known for its excellent optical properties and versatility in various applications. The filter's coating, EDM 87-851, is specifically designed to enhance its performance and durability.
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