Shandong Yanggu Constant Crystal Optics, Inc
Plano concave Lenses
Product Description
Plano concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems.
Plano-Concave Lens Specifications:
Material: BK7, Fused Silica, SF10, CaF2, Sapphire .etc.
Paraxial Focal Length Tolerance: ±2%
Dimension Tolerance: ±0.2General. ±0.05High Precision
Centration: 80%Small Size, 95%Large Size
Surface Figure 1.5?@633nm?General,?/4@633nmHigh Precision
Surface Quality: 60/40?General,10/5High Precision
Bevel: 0.25mm
Coating: Uncoated, AR,PR, HR, etc.
