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D40 Achromatic Objective Lens for DIY Refractive Astronomical Telescopes - 40mm Diameter,...

1PCS Edged Acrylic Flat-convex Lens Dia 10.5mm-50mm for Flashlight LED Focusing Torch...

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D50mm-FL28mm)

50mm Round Fresnel Lens PMMA Focal 28-100mm for LED Solar Condenser Optics(60mm)

60mm Lens with Blue Single Sided Film - Compatible F300~900mm Telescopes 1 Piece (D60F600)

60mm Lens with Blue Single Sided Film - Compatible F300~900mm Telescopes 1 Piece (D60F700)

1 cm-66 mm Flat Convex Acrylic Optical Lens for LED Flashlight with...

D203F800 Parabolic Newton Reflector Primary Mirror with 60mm Secondary - DIY Astronomical...

Short Axis Secondary Mirror for DIY Reflective Astronomical Telescopes - Options from...

200mm Round Acrylic Fresnel Lens, 350mm Focal Length Concave Magnifier for Wide...

1 cm-66 mm Flat Convex Acrylic Optical Lens for LED Flashlight with...

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D40mm-FL40mm)

10-38mm Flat Convex PMMA Condensor Lens for Zoom Flashlight and Bicycle Headlamp...

50-100mm Round PMMA Fresnel Lens Threaded Condenser for LED Light Projector VR Optical(D100mm-FL50mm)

50mm PMMA Fresnel Lens Optical Acrylic Magnifier for DIY Projector VR Focusing(Focal Length 28mm)

Short Secondary Mirror for DIY Reflective Astronomical Telescopes - Options from 20mm...

10-38mm PMMA Flat Convex Acrylic Lens, Aspheric Optical Condenser Lens(1pcx18x8.4mm)

150mm PMMA Fresnel Lens Solar Focus with 3X Magnifier for DIY Projector(80mm)

Acrylic Flat Convex Lens with 20-66mm Rim for Flashlight LED Focus Torch...

Short Axis Secondary Mirror for DIY Reflective Astronomical Telescopes - Options from...

50mm Fresnel Lens PMMA Acrylic Threaded Condenser Focal 28-100mm for LED DIY...

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D50mm-FL70mm)

1PCS Edged Acrylic Flat-convex Lens Dia 10.5mm-50mm for Flashlight LED Focusing Torch...

50-100mm Round PMMA Fresnel Lens Threaded Condenser for LED Light Projector VR Optical(D50mm-FL28mm)

150mm PMMA Fresnel Lens Acrylic Magnifier Threaded Round Optical Focal 55-200mm(150mmx120mm)

1 cm-66 mm Flat Convex Acrylic Optical Lens for LED Flashlight with...

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optical Experiments,1pcs(D50mmxFL80mm)

10-38mm Flat Convex Aspherical PMMA Lens for Zoom LED Flashlight Bicycle Head...

Acrylic Flat Convex Lens with 20-66mm Rim for Flashlight LED Focus Torch...

Versatile DIY Astronomical Telescope Lens Set for Telescopes of Xingtrang Caliber 50/70...