47-948 50 x 50 mm N-BK7 45 deg Reflective Red Dichroic Filter; t=4 mm 400-750nm
- Type
- Filter
- Subtype
- Dichroic Filter
- Brand
- Edmund Optics
Properties
- Shape
- Rectangular
- Cut Off Frequency
- Cut On Frequency
- 615 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
47-948 50 x 50 mm N-BK7 45 deg Reflective Red Dichroic Filter; t=4 mm 400-750nm
The 47-948 is a 50 x 50 mm N-BK7 45 degree Reflective Red Dichroic Filter with a thickness of 4 mm, designed for use in the 400-750nm wavelength range. This filter is sourced from the reputable optical vendor, Edmund Optics, and is available for purchase on their website.
The filter is a Dichroic type, which means it selectively reflects or transmits light based on its wavelength. In this case, it is designed to reflect red light at a 45-degree angle. The N-BK7 material, a high-quality borosilicate glass, ensures excellent optical performance and durability.
The filter's geometry includes a width of 50 mm and a height of 50 mm, making it a square shape. The thickness of 4 mm provides rigidity and stability. The physical data indicates a cut-on wavelength of 615 nm, meaning it starts to transmit light from this wavelength, and a cut-off wavelength of 0 nm, indicating it transmits all wavelengths below this.
The coating on both the front and back surfaces of the filter is EDM 47-263. This coating is likely designed to enhance the filter's performance, such as increasing its reflectivity or durability.
The filter's shape is described as a Thin Lens, suggesting it may have some lens-like properties, such as focusing or diverging light. However, this is not explicitly stated in the provided data.
