Convex Lens 50mm

Product Code : SCL-LAO-12092

Convex Lens 50mm (SKU SCL-LAO-12092) is a biconvex converging lens of optical crown glass, 50 mm across, with a nominal focal length of +100 mm. It brings parallel light to a real focus and forms real, inverted images on a screen, which makes it the working lens for focal-length practicals from Class 10 science to B.Sc. physics. Science Lab Supplies, Ambala, manufactures this lens at its Plot 448 premises in the HSIIDC Industrial Area, Saha, India, and dispatches it to schools, colleges, contractors and dealers on direct order.

Specifications

Each fact about the +100 mm convex lens has its own row below. Put simply, it is an equi-biconvex spherical lens in high-purity crown glass, refractive index 1.5170 nominal, polished to a 60/40 scratch-dig finish with ground edges, and its 50 mm diameter fits standard holders.

Applications and Experiments for the Convex Lens 50mm

The lens is set in a holder on a bench or table, a source is placed in front, and a screen is moved until the image is sharp; the distances then give the focal length. It is everyday school physics lab equipment in India for image-formation and magnification work.

• Class 10 science: rough focal length by focusing a distant object onto a screen such as the Laboratory White Viewing Screen.
• Class 12 physics: focal length by the u–v method and graphs of 1/u against 1/v, with linear magnification of real images.
• Class 12 physics: serving as the converging lens when finding the focal length of the Concave Optics Experiment Lens by combination.
• B.Sc. practicals: building multi-lens systems and checking the lens maker's equation.

Never use the lens to focus sunlight or a strong beam onto skin, paper or other flammable material.

Standard Scope of Supply

The order consists of one 50 mm convex lens in a protective lint-free container, a microfibre optical cleaning cloth and a technical data card with dispersion coefficients. A holder, screen, light source and bench are not included; they can be added to the quotation as a complete focal-length station.

Packing, MOQ and Lead Time

Quotations are prepared for anything from one convex lens to a complete class quantity for group practicals. Science Lab Supplies sets out the packing, delivery time and price for the number you request, and screens or holders can be listed on the same quotation.

Science Lab Supplies has an Importer-Exporter Code and is able to ship to buyers in South Africa, Qatar, Sri Lanka, Vietnam, Malaysia and Peru. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Lens quantities can be sent from the contact page or added to the enquiry cart; government and institutional bids go through the lab tender page.

Frequently Asked Questions

What does the +100 mm focal length mean?
The positive sign marks a converging lens: parallel rays passing through it meet at a real focal point 100 mm beyond the lens, on the side opposite the incoming light.

Can it form an image on a screen without other lenses?
Yes. For an object placed beyond its focal point, the lens forms a real, inverted image that can be caught directly on a white screen and measured along the bench.

Is the lens glass or plastic?
It is ground from high-purity crown glass, which keeps a stable refractive index and resists fine scratches better than plastic. Hold it by the ground rim to keep the polished faces clean.

Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer, and this lens comes from its works in Saha, Ambala. Quotations are drawn up by the producing unit, so buyers get factory terms rather than a dealer's.

Related Lens Holders, Benches and Optics

These items hold, light or complement a converging lens during focal-length, magnification and image-formation experiments. Any combination of them can be quoted alongside the convex lens when a school or college sets up optics stations for its physics practical classes.

• Single Rod Optical Bench — 1000 mm rail with 1 mm increments and three riders.
• Half-Frame Optics Bench — supplied with two universal lens holder ring mounts.
• Lens Holder With Finished wood — hardwood base with a metal clamp for 38 to 50 mm optics.
• Lens Kit with Stands and Storage Box — converging lenses of 5, 10 and 20 cm focal distance.
• Glass Lens Demonstration — plano-convex, double convex and four other 38 mm lenses.
• Concave Mirror (50 mm) — converging mirror with a matching +100 mm focal length.
• Parallel Beam Light Source — lamp with a 50 W halogen bulb and focus adjustment.

Browse the full Light and Optics range, the Physics Lab range for lens and ray-box sets, or all physics lab equipment.

Last updated: 9 October 2026