2PCS 30-100mm Optical Glass Double Concave Lens – Focal Length Large Optics, DIY Projects

Need lenses for experiments, prototypes, or DIY optics?

This is a 2-piece set of double concave optical glass lenses.

Diameter range is 30mm to 100mm, so you get variety.

Made in China, material is actual optical glass—not cheap plastic.

Sub-Type: Lenses.

Type: Optical.

Country of Origin: China.

Brand new, unused, no packaging damage.

Perfect for science projects, telescopes, cameras, or just playing with light.

Focal length varies, so check the markings or test them yourself.

No MPN, no UPC, just solid glass blanks ready for your build.

Great for educators, hobbyists, or anyone who bends light for fun.

2PC, as described.

Double concave, double the possibilities.