68-654 25 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 3600nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 3600 nm
Material
- Name
- Germanium
- Dispersion Equation
- Sellmeier
- n (λ)
- 5.3146589099372665
- λ
- 588 nm
- B1
- 0.4886331
- C1
- 1.393959 μm2
- B2
- 14.5142535
- C2
- 0.1626427 μm2
- B3
- 0.0091224
- C3
- 752.19 μm2
68-654 25 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 3600nm
The 68-654 is a 25 mm diameter Infrared (IR) Longpass Filter, manufactured by Edmund Optics. This filter is designed with a traditional coating, featuring a catalog number of 68-654. The filter is currently in stock and available for purchase through the official Edmund Optics website, linked below.
https://www.edmundoptics.com/p/360mum-25mm-diameter-infrared-longpass-filter/23272/
The 68-654 filter is a Longpass Filter, a type of optical filter that passes longer wavelengths of light and blocks shorter wavelengths. The base shape of this filter is circular, with a diameter of 25 mm and a thickness of 1 mm. The filter is made from Germanium Burnett, a material known for its excellent optical properties.
The filter's physical data includes a cut-on wavelength of 3600 nm and a cut-off wavelength of 0 nm. This means that the filter begins to transmit light at 3600 nm and continues to transmit all longer wavelengths. The filter's coating, applied to both the front and back surfaces, is edm 33-970. This coating enhances the filter's performance and durability.
The 68-654 filter has a shape described as a Thin Lens, indicating its optical design and function. This filter is a versatile and reliable component for various optical systems, particularly those operating in the infrared spectrum.