Concave-Convex Lens Diameter 21.8 25.5 26 28 31.5 33mm CCD Industrial Lens Coated With Anti-Reflection Film Optical Glass
D is diameter,F is Focal Length.For an example: D21.8 F35 is: diameter is 21.8mm,Focal Length is 35mm.
Application:
Magnifying images, focusing, telescopes, microscopes, aging mirrors, optical experiments self-made telescope projectors, etc.,
Parameter:
1.The The parameter of D21.8 F35 is follows:
Diameter: 21.8mm
Focal length: 35mm
Edge thickness: 1.5mm
Center thickness: 5.32mm
2.The The parameter of D25.5 F40 is follows:
Diameter: 25.5mm
Focal length: 40mm
Edge thickness: 1.6mm
Center thickness: 4.37mm
3.The The parameter of D26 F50 is follows:
Diameter: 26mm
Focal length: 50mm
Edge thickness: 1.2mm
Center thickness: 3.5mm
4.The The parameter of D28 F140 is follows:
Diameter: 28mm
Focal length: 140mm
Edge thickness: 2mm
Center thickness: 3.5mm
5.The The parameter of D31.5 F50 is follows:
Diameter: 31.5mm
Focal length: 50mm
Edge thickness: 1.6mm
Center thickness: 7.5mm
6.The The parameter of D33 F50 is follows:
Diameter: 33mm
Focal length: 50mm
Edge thickness: 0.9mm
Center thickness: 6mm
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Structure : Double Concave
DIY Supplies : Electrical
Material : Metal
Origin : Mainland China
Use : Optical
Shape : Meniscus
Diameter : 21.8 25.5 26 28 31.5 33mm