Azure Spy High-Precision Cemented Achromatic Doublet Lens, Ø52 mm, Focal Length 143 mm – Telescope Grade, Green Film Coated

The Azure Spy High-Precision Cemented Achromatic Doublet Lens is a premium optical component designed for astronomy, scientific research, and precision optical instruments. Featuring a 52 mm clear aperture and a 143 mm focal length (f/2.75), this doublet minimizes both chromatic and spherical aberrations across the visible spectrum, ensuring crisp and high-contrast imaging.

To further enhance performance, the lens surfaces are treated with a green anti-reflection (AR) film coating, which significantly reduces surface reflections and improves light transmission. This results in brighter images, improved contrast, and reduced ghosting—making it especially suitable for high-precision telescopic and imaging applications.

Key Features

• Brand: Azure Spy

• Lens Type: Cemented Achromatic Doublet (Two-element lens: crown + flint glass)

• Diameter (Ø): 52 mm

• Focal Length: 143 mm (f/2.75)

• Configuration: Cemented doublet for enhanced stability and precision

• Aberration Control: Corrected for chromatic and spherical aberrations in the visible Range.

• Coating: Green anti-reflection (AR) film coating for enhanced light transmission.

• Optical Quality: High surface accuracy and fine polish for excellent image contrast

• Application Grade: Telescope-grade optics for astronomy, research, and high-precision instruments

Applications

• Refracting telescopes and astronomy optics

• Optical instruments for scientific research

• Imaging systems requiring reduced chromatic aberration

• Educational and laboratory optical setups

• DIY telescope and lens assembly projects

⚡ With its combination of large aperture, short focal length, and precision achromatic design, the Azure Spy 52 mm / 143 mm lens is an excellent choice for telescope makers, optical designers, and scientific instrument builders who require uncompromising image quality.