Specifications:

• High-concerned chemical: None
• Origin: Mainland China
• Use: Achromatic
• Application: Telescope
• Center Thickness: 5.14mm
• Clear Aperture: 15-16mm
• Coating: 400~700nm
• Diameter: 17mm
• Edge thickness: 3.8mm
• Focal Length: 51.98mm
• Focal length tolerance: +/- 2%
• Material: N-BK7
• Model Number: Achromatic lens 17
• Shape: Other
• Structure: Other
• Surface: 60/40
• Thickness tolerance: +/- 0.2mm
• Working distance: 79.3mm