685FAP550400 400 x 550 mm Acrylic Colour Longpass Filter 685nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Knight Optical
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.
