N-BK7 high precision mirror

SPECIFICATIONS

N-BK7 Optical Properties:

1. Refractive Index:

• N-BK7 has a refractive index of approximately 1.5168 at the sodium D line (589 nm). This relatively high refractive index makes it suitable for a range of Optical Components.

2. Abbe Number (V-number):

• The Abbe number of N-BK7 is around 64.2, indicating low dispersion. This property allows for better color correction in optical systems, minimizing chromatic aberration.

3. Transmission Range:

• N-BK7 offers good transmission in the visible spectrum (approximately 400 nm to 700 nm) and can be used effectively in near-infrared applications (up to around 2.1 µm).

4. Density:

• The density of N-BK7 is about 2.51 g/cm³, which is typical for high-quality optical glasses.

5. Thermal Properties:

• N-BK7 has a thermal expansion coefficient of approximately 7.1 x 10⁻⁶ /°C, making it stable under varying temperature conditions.

6. Mechanical Properties:

• It exhibits good mechanical strength and is resistant to scratching and shock, which aids in the durability of optical components made from this material.

Custom Ordering Information

MG-Optics will also provide N-BK7 high precision window and N-BK7 high precision flat. If you are interested with our products, Just send us your drawings or specifications, we will begin preparing a quotation for you.

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