Azure Spy High-Precision Cemented Achromatic Doublet Lens, Ø61.5 mm, Focal Length 220 mm – Telescope Grade, Green Film Coated

The Azure Spy High-Precision Achromatic Doublet Lens is expertly crafted to deliver superior optical performance for astronomy, scientific research, and high-precision imaging. With a large 61.5 mm clear aperture and a 220 mm focal length, this cemented doublet provides enhanced light-gathering power, excellent image clarity, and precise color correction across the visible spectrum.

Built from premium-grade crown and flint optical glass, the doublet construction effectively minimizes chromatic and spherical aberrations, ensuring high-contrast, distortion-free imaging. The lens’s larger aperture allows brighter and sharper observations, making it ideal for telescope objectives, optical instruments, and research-grade systems.

To further enhance performance, the optical surfaces are coated with a green film anti-reflective coating, increasing light transmission, reducing reflections, and improving brightness and contrast under both daylight and low-light observation conditions.

Key Specifications:

• Brand: Azure Spy

• Type: Cemented Achromatic Doublet Lens

• Clear Aperture (Ø): 61.5 mm

• Focal Length: 220 mm

• Coating: Green Film Anti-Reflective Coating

• Glass Type: Crown & Flint Optical Glass (Precision Bonded)

• Optical Performance: High-contrast, chromatic aberration corrected, telescope-grade clarity

• Applications: Astronomy telescopes, astrophotography, laser systems, research instruments, precision optical devices

This lens is an excellent choice for astronomy enthusiasts, optical engineers, and researchers seeking large-aperture, precision optics with reliable long-term performance for demanding telescope and scientific applications.