NE30B Dia. 25 mm Absorptive ND Filter; Optical Density 3.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
NE30B Dia. 25 mm Absorptive ND Filter; Optical Density 3.0
The NE30B is a Neutral Density Filter with a diameter of 25 mm, designed for use in optical systems that require attenuation of light intensity. Manufactured by Thorlabs, a leading vendor in the field of optical components, this filter is made of N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties.
The filter features a thickness of 2.1 mm and is coated with THo NE30A on both the front and back surfaces. This coating is designed to absorb a significant portion of the incident light, reducing its intensity without altering the color balance. The optical density of the filter is 3.0, which means it attenuates the light by a factor of 1000.
The NE30B filter is designed with a thin lens shape, which minimizes its impact on the optical path and reduces the risk of unwanted reflections or aberrations. The filter's geometry and coating make it suitable for use with a wide range of wavelengths, including the commonly used 633 nm.
The NE30B is currently in stock and available for purchase through the Thorlabs website. With its high-quality materials, precise construction, and versatile design, the NE30B is an excellent choice for a wide range of optical applications.
