

Medium Film Concave Mirror, N-BK7, Operating Wavelength: 400-750 nm CM10-F250-A
CM10-F250-ADesign Tools
Medium Film Concave Mirror, N-BK7, Operating Wavelength: 400-750 nm — Model CM10-F250-A
Operating wavelength 400-750nm, focal length -250 mm, ØØ25.4, substrate N-BK7.
Product Description
LBTEK dielectric concave mirrors use N-BK7 substrates, with a broadband dielectric coating applied to the concave surface, suitable for beam collimation, focusing, and imaging. Currently, LBTEK offers dielectric concave mirrors covering three wavelength ranges: 400-750 nm, 750-1100 nm, and 1100-1650 nm. The average reflectance of these mirrors within their operating wavelength range is greater than 99%. Additionally, dielectric concave mirrors are available in seven different focal lengths, ranging from -25 mm to -500 mm, all with a one-inch diameter. Besides standard products, LBTEK also provides customization services for size, focal length, and operating wavelength. If needed, please contact LBTEK technical support.
Medium Film Concave Mirror, N-BK7, Operating Wavelength: 400-750 nm
- Working Wavelength: 400-750 nm
- Reflectivity: Ravg > 99%
- Focal Length: -25 mm ~ -500 mm
- Matte Back Surface
LBTEK dielectric concave mirrors are made of N-BK7 substrates with a broadband dielectric coating on the concave surface (frosted backside), suitable for beam collimation, focusing, and imaging. These mirrors offer high reflectivity (Ravg > 99%) within the 400–750 nm wavelength range. Currently, LBTEK provides dielectric concave mirrors in a one-inch size with a center thickness of 6.0 mm, compatible with one-inch mirror mounts. The available focal length options range from -25 mm to -500 mm, covering seven different focal lengths. In addition to standard products, LBTEK also offers customization services for size, focal length, and operating wavelength. For inquiries, please contact LBTEK technical support.
| Clear Aperture | 90% CA |
| Operating Wavelength | 400-750nm |
| Reflectance | Ravg >99%@400-750 nm, AOI=0°- 45° |
| Diameter | Ø25.4 |






