Objective Lens， 62mm 61mm Glass Achromatic Doublet Convex Lens for DIY Telescope Optical Lenses Focal 228mm-800mm,for Doublet Convex Lens(D61mmF228mm)

=========Model Number : DIY Doublet Convex LensStructure : Double ConvexMaterial : Glass

• Made optical glass with precision polishing, ensuring stable performance and long service life.
• This 61mm & 62mm achromatic doublet convex lens is made of optical glass, with focal lengths from 228mm to 800mm, designed for DIY telescope optical systems.
• The achromatic doublet structure effectively reduces chromatic aberration, providing sharp and clear imaging and astronomical observation.
• optical glass material and fine polishing ensure high light transmittance, low distortion and stable optical performance.
• Multiple focal length options meet different DIY assembly needs, suitable for making and refitting various astronomical telescopes.
• Standard size and reasonable design make it easy to install, an ideal optical accessory for astronomy enthusiasts and homemade telescopes.