MECCANIXITY Double Convex Lens, 8.27"(210mm) Focal Length 2.91" (75mm) Diameter Optically Worked Glass Polished Ground Edges Great for Physics Class, 2 Pack

What is this?The double convex lens has outward convex surfaces on both sides, which can gather the light passing through. In instruments such as magnifiers, microscopes, and telescopes, it is used to focus light to enlarge the image. In camera lenses, it is used to focus and adjust images, and can also be used in daily physics teaching experiments.What will I get?The color of the lens is TransparentThe material of the lens is GlassThe focal length of the lens is 210mm / 8.27inchThe size of the lens is 75 x 11.5mm / 2.91 x 0.45 inch (OD*H)In the package of 2 x Glass LenAre there any advantages of the product? Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. The lens is accurately measured and has consistent curvature, ensuring consistent performance and results.How to use it?Once you have determined the focal length, position the lens in front of the light source. The side of the lens that is curved outward should face the object you want to focus the light on. Move the lens back and forth until the image of the object is in focus on the screen or surface.What should I notice?Please store and use it properly to avoid scratches and damage to the mirror surface.

• The double convex lens has outward convex surfaces on both sides, which can gather the light passing through. In instruments such as magnifiers, microscopes, and telescopes, it is used to focus light to enlarge the image. In camera lenses, it is used to focus and adjust images, and can also be used in daily physics teaching experiments.
• The focal length of the lens is 210mm / 8.27inch; The size of the lens is 75 x 11.5mm / 2.91 x 0.45 inch (OD*H)
• Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. The lens is accurately measured and has consistent curvature, ensuring consistent performance and results.
• Once you have determined the focal length, position the lens in front of the light source. The side of the lens that is curved outward should face the object you want to focus the light on. Move the lens back and forth until the image of the object is in focus on the screen or surface.
• Please store and use it properly to avoid scratches and damage to the mirror surface.