FGL400M Dia. 25 mm SM1-Mounted Colored Glass Filter; 400nm Longpass
- Type
- Filter
- Subtype
- Color Glass
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 400 nm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167817367777034
- λ
- 588 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
FGL400M Dia. 25 mm SM1-Mounted Colored Glass Filter; 400nm Longpass
The FGL400M is a color glass filter, offered by Thorlabs, with a catalog number FGL400M. This filter is designed with a base shape of a circle, featuring a diameter of 25 mm and a thickness of 2 mm. The material used in the construction of this filter is n-bk7 schott, a well-regarded optical glass.
The FGL400M filter is characterized by its longpass wavelength of 400 nm. This means it allows transmission of light at wavelengths longer than 400 nm, while effectively blocking shorter wavelengths. The cut-on wavelength, which is the point at which the filter starts to transmit light, is also 400 nm. The cut-off wavelength, the point at which the filter stops transmitting light, is 0 nm, indicating that it allows transmission of all wavelengths longer than 400 nm.
This filter features a coating on both the front and back surfaces, denoted as 'tho fgl400'. This coating is designed to enhance the filter's performance and durability. The filter's shape is that of a thin lens, making it suitable for a wide range of optical applications.
The FGL400M filter is currently in stock and available for purchase through the Thorlabs website, as indicated by its weblink status. For more detailed information, you can visit the provided weblink.