Telescope Accessories, 42mm Focal Length 50mm Convex Lens Coated K9 Optical Glass Optics Biconvex Double Magnifier Telescope Projector Lenses,for Replacement

Telescope Accessories, 42mm Focal Length 50mm Convex Lens Coated K9 Optical Glass Optics Biconvex Double Magnifier Telescope Projector Lenses,for Replacement

• This product is a special objective lens accessory for telescopes, suitable for corresponding models, matching the barrel structure to meet the needs of optical component replacement and maintenance.
• This 42mm diameter biconvex lens with 50mm focal length is made of coated K9 optical glass, suitable for magnifiers, telescopes and projectors.
• K9 optical glass ensures high light transmittance, low dispersion and clear, stable imaging for various optical devices.
• Multi-layer coating reduces surface reflection and stray light, improving brightness and contrast in observation and projection.
• Standard biconvex design offers excellent light-gathering ability, perfect for magnification, focusing and optical DIY projects.
• Compact size and good compatibility make it easy to install, an ideal optical component telescopes, projectors and magnifying tools.
• Designed with optical structure, it can effectively collect light, improve image brightness and field of view performance during observation, and adapt to outdoor observation scenarios.