21mm 23mm 25mm 28mm Cemented Doublet Objective Lens Blue Film Green Achromatic Optical Lenses Telescope Accessory(D25F74.5 Green Film)

Description

• Precision-Grade Optical Construction, Crafted with industrial-standard optical glass (60/40 surface quality rating) for enhanced light transmission.
• Adjustable Diameter & Focal Length Configuration Versatile 21.5-28mm diameter and 24.5-262mm focal length options for flexible application scenarios.

Material: Optical Glass

Diameter: 21.5-28mm for choosing

Focal Length: 24.5-262mm for choosing

Surface quality: 60/40

Package:

1PCS Doublet Lens

Shipping and Returns

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