13-243 25 mm Dia. Hoya ND-13 Absorptive Neutral Density Filter; OD 0.9 750-1550nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458448271212196
- λ
- 588 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
13-243 25 mm Dia. Hoya ND-13 Absorptive Neutral Density Filter; OD 0.9 750-1550nm
The 13-243 is a 25 mm diameter Neutral Density Filter, manufactured by Hoya and sourced from Edmund Optics. This filter is designed to reduce the intensity of light entering the optical system without altering its color composition. It features an Optical Density (OD) of 0.9, which corresponds to a transmission of 36.8%.
The filter is absorptive in nature, meaning it absorbs a portion of the incident light, rather than reflecting it. This is particularly beneficial in applications where minimal reflection is desired. The 13-243 filter is coated with EDM 13-226 on both the front and back surfaces, which enhances its performance in the Near-Infrared (NIR) region of the spectrum, specifically between 750nm and 1550nm.
The filter has a thin lens shape and a thickness of 2.5mm, making it suitable for use in various optical systems. It is important to note that the catalog number for this item is 13-243, and it is currently in stock. For more information, users can refer to the product's webpage at https://www.edmundoptics.com/p/09-od-25mm-dia-nir-ii-coated-absorptive-nd-filter/44493/.
