NE502B Dia. 0.5 in Absorptive ND Filter; Optical Density 0.2
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 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
NE502B Dia. 0.5 in Absorptive ND Filter; Optical Density 0.2
The NE502B is a Neutral Density (ND) Filter, designed and manufactured by Thorlabs. This filter is part of the extensive catalog of optical elements available at 3DOptix, a leading provider of advanced optical simulation software.
The NE502B filter is circular in shape, with a diameter of 12.7 millimeters and a thickness of 1.4 millimeters. It is made from n-bk7 schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence.
The filter features a Ne02a coating on both the front and back surfaces. This coating is an absorptive type Neutral Density filter, designed to reduce the intensity of incident light without altering its color composition. The Optical Density (OD) of this filter is 0.2, which corresponds to a reduction of approximately 22% in light intensity.
The NE502B filter is designed with a thin lens shape, making it suitable for use in a wide range of optical systems. The filter's current status is 'in stock', and it is available for immediate purchase through the Thorlabs website.