NE13A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 1.3 AR 350-700nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4570121244558207
- λ
- 633 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
NE13A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 1.3 AR 350-700nm
The NE13A-A is a Neutral Density Filter, specifically designed for use in optical systems where light intensity needs to be reduced without altering the color composition of the light. This filter, sourced from Thorlabs, boasts a 25 mm diameter and a thickness of 2.5 mm, making it suitable for a wide range of applications.
The NE13A-A filter features an Absorptive Neutral Density type, which means it reduces light intensity by absorbing a portion of the light spectrum. This filter is designed to operate within the wavelength range of 350-700nm, making it versatile for use in various optical systems.
The filter's coating is another notable feature. Both the front and back surfaces are AR-coated (Anti-Reflective coated) for the 350-700nm range. This coating helps minimize surface reflections, thereby improving transmission and reducing unwanted ghost images or flare.
The filter is mounted in an SM1-threaded mount, which is a standard 1.035-20 thread per inch (TPI) mount commonly used in Thorlabs' optomechanical components. This mount allows for easy integration into existing optical systems.