65-659 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 690nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- 695 nm
- Cut On Frequency
- 685 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4555240712100141
- λ
- 690 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
65-659 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 690nm
The 65-659 is a Bandpass Filter, specifically designed and manufactured by Edmund Optics. This filter is circular in shape, with a diameter of 12.5 mm and a thickness of 7.5 mm, making it suitable for a wide range of optical applications. The filter is made from UVFS Mal-1965, a material known for its optical properties and durability.
The 65-659 filter is designed to operate at a central wavelength of 690 nm, with a full width at half maximum (FWHM) of 10 nm. This makes it ideal for applications that require narrowband filtering around the 690 nm wavelength. The filter's cut-on wavelength is 685 nm, and the cut-off wavelength is 695 nm, ensuring a tight passband and high out-of-band rejection.
The filter features a thin lens shape and is coated on both the front and back surfaces with EDM 65-659, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance, providing improved transmission and reduced reflectance. The filter is currently in stock and available for immediate shipping, as indicated by its valid weblink status.
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