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

50-100mm Round PMMA Fresnel Lens Threaded Condenser for LED Light Projector VR Optical(D100mm-FL40mm)

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D60mm-FL30mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optical Experiments,1pcs(D70mmxFL80mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optical Experiments,1pcs(D30mmxFL50mm)

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

Multi-purpose DIY Astronomical Telescope Lens Set for Xingtrang 50/70 Caliber Telescopes -...

Round Borosilicate Glass Fresnel Lens Spotlight 80-250mm for Stage Lamp Magnifier(D 112mm)

D60mm Glued Objective Lens - 60F410 Fused Blue Coated Achromatic for Astronomical...

50mm Round Fresnel Lens PMMA Focal 28-100mm for LED Solar Condenser Optics(70mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optical Experiments,1pcs(D42mmxFL70mm)

D106F900 Green Film D106 Refractor Astronomical Telescope Lens 106mm Multi-Coated Focal Length Options 600mm/900mm

Parabolic Reflector Primary Mirror Lens D160F800 for Astronomical Telescopes-Aperture of 160 mm,...

90mm Double Separation Lens for Refractive Astronomical Telescopes - Focal Length Options...

100mm PMMA Fresnel Lens Solar Concentrator 3X Optical Focal Length 36-120mm(100mm-01)

50-100mm Round PMMA Fresnel Lens Threaded Condenser for LED Light Projector VR Optical(D90mm-FL25mm)

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

Square Fresnel Lens 30x30 40x40 50x50 100x100mm PMMA Acrylic DIY Projector Condenser Magnifier(100x100mm-FL50mm)

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

D80mm Glued Green Film Achromatic Objective Lens for DIY Astronomical Telescopes(D80F400 Film)

60x60mm PMMA Square Fresnel Lens, Focal Length 30mm or 50mm, 2mm Thick...

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

PMMA Flat Convex Acrylic Lens 15-50mm for Zoom Flashlight Bicycle Headlight Replacement

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D50mm-FL60mm)

Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics(D20mm-FL50mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optical Experiments,1pcs(D70mmxFL50mm)

D30mm Glued Objective Lens - Achromatic Telescope for DIY Astronomy Projects, Multiple...

300x300mm PMMA Fresnel Lens 330mm Focal Length Solar Concentrator Magnifier

PMMA Round Fresnel Lens 40-100mm Focal 60-80mm Condenser Solar Concentrator Optics,1pcs(42mmx60mm)

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