- Specifications: - 91% ± 3.0% 250-2000nm- Un-coated quartz
- Parallelism: 30 arc seconds or better
- Size: 25.0 Ø +0.0 / -0.2
- Thickness: 1.50 ±0.5
- Scratch-Dig: 80/50
- Clear Aperture: 90%
- Flatness: 0.25 per inch or better
- Substrate: N/A
- Angle of Incidence: 0
- %T (Optical Density): 91% ( 0.04 OD )
$141.00
$118.00
$100.00
In Stock