Convex Lens Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4759
Jlab Export is a leading Convex Lens Manufacturer,and suppliers in India
Convex Lens (code EL-SLE-4759) is a converging lens with identical curvature on both faces, used to focus light and to form real and virtual images in optics practicals at schools, colleges and research laboratories. It is listed as Accurate type and offered in focal lengths F/L 5, 10, 15, 20, 25 and 30, so a class can work with a full range on one optical bench. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Lens type | Convex (converging), identical curvature on both sides |
| Grade | Listed as Accurate type |
| Focal lengths | F/L 5, F/L 10, F/L 15, F/L 20, F/L 25 and F/L 30 — unit not stated in the listing; confirm when ordering |
| Focal length sign | Positive (converging lens) |
| Images formed | Real and virtual, depending on object position |
| Main function | Focusing light |
| Quality check | Each lens is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4759 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with the JLab Concave Lens?
| Lens | Shape | Action on light | Images | Focal lengths |
|---|---|---|---|---|
| This convex lens (EL-SLE-4759) | Identical convex curvature on both sides | Converging | Real or virtual | F/L 5 to F/L 30 |
| Concave Lens | Identical concave surface on both sides | Diverging | Virtual only | F/L 5 to F/L 30 |
Buy the convex lens when students need to throw a real image on a screen, measure focal length directly or build a magnifier; add concave lenses for diverging-lens work, which is usually done by pairing a concave lens with a convex one.
What Is a Convex Lens Used For?
A convex lens bends parallel rays so that they meet at its principal focus. With the object beyond the focus it gives a real, inverted image that can be caught on a screen; with the object inside the focus it gives a virtual, upright, magnified image — the principle of a hand magnifier. In the class 10 chapter on light, students find the approximate focal length by focusing a distant window or the sun onto a screen and trace images for different object positions; in class 12 practicals they measure the focal length by the u–v method on an optical bench and use a convex lens to find the focal length of a concave lens or a convex mirror. College labs use the same lenses for lens-combination and aberration studies.
Handle lenses by the rim, clean them with lens tissue rather than cloth, never look at the sun through a lens, and store each focal length in its own labelled slot.
What to Specify When Ordering
- Focal lengths — F/L 5, 10, 15, 20, 25 and 30, with the unit and the number of each.
- Quantity — the minimum order is 10 units; one lens of each focal length per optics bench is a common plan.
- Lens diameter — not stated in the listing, so give the size your holders take.
- Holders, bench and concave lenses — can be added to the same quotation.
Frequently Asked Questions
What focal lengths are available?
F/L 5, F/L 10, F/L 15, F/L 20, F/L 25 and F/L 30. The listing does not give the unit, so confirm the focal length and unit in your enquiry.
What does “identical curvature on both sides” mean?
Both faces of the lens bulge outwards by the same amount, so the lens is symmetrical (equiconvex) and behaves the same whichever face points to the object.
Can it form both real and virtual images?
Yes. Objects beyond the focus give a real, inverted image on a screen; objects closer than the focus give a virtual, upright, enlarged image seen through the lens.
How do students measure its focal length?
Quickly, by focusing a distant object onto a screen and measuring the lens-to-screen distance; more precisely, by the u–v method on an optical bench, taking several object and image positions.
Is a lens holder included?
No, this listing covers the lens. A wooden lens holder and an optical bench are separate items linked below.
What details does an export quotation need?
The focal lengths and quantities, the destination country and port or city, the delivery terms you prefer such as FOB or CIF, any packing or labelling needs and any tender reference.
Who manufactures this convex lens?
JLab (Jain Laboratory Instruments Pvt Ltd) makes it at its works in Ambala, Haryana, India, and quotes for it directly as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an optics and laboratory equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The lenses are made at JLab’s own works, not bought from a trading company, so schools, colleges, dealers and importers buy factory-direct, each lens is visually inspected before it ships, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — Kyrgyzstan in Central Asia, South Africa in Southern Africa, Afghanistan in South Asia, Sudan in North Africa and Ecuador in South America among them. Tender buyers can use the JLab lab tenders page.
Lenses, Holders and Optics Bench Items
- Concave Lens — the diverging lens in the same focal lengths.
- Convex Mirror (Vacuum Type) — its focal length is found with the help of a convex lens.
- Wooden Lens Holder — a V-slot holder that keeps a convex or concave lens upright.
- Optical Bench Wooden — holds lenses, mirrors and screens in line.
- Lens Cleaning Tissue — for removing fingerprints and smudges from lenses.
- Hand Lens with Bakelite Handle — a handheld magnifier based on the same converging-lens principle.
See more optics lab equipment in the School Lab Equipment range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the focal lengths and quantities (minimum 10 units), the lens diameter your holders take, and your delivery location through the contact page.
Last updated: 4 October 2026
