Convex Lens Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12436
Jlab Export is a leading Convex Lens Manufacturer,and suppliers in India
Convex Lens (code EL-PL-12436) is a 50 mm diameter converging lens with a 20 cm focal length and ground edges, model JL243. It brings a parallel beam to a real focus, so it serves the school practicals on image formation and focal length. This lens is produced by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL243 |
| Type | Convex (converging) lens |
| Diameter | 50 mm |
| Focal length | 20 cm |
| Edges | Ground |
| Quality check | Each lens is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-12436 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Finding the Focal Length of a 20 cm Lens
The quick check is the distant-object method: focus a far window onto a screen and measure the lens-to-screen distance, which comes out close to 20 cm. For a fuller result, mount the lens on an optical bench, record object and image distances at several positions and apply 1/f = 1/v − 1/u with the sign convention. With the object nearer than the focal point, the lens gives an upright, enlarged virtual image, as a magnifier does.
Related Optics Items
- Concave Lens — diverging lens of the same 50 mm size and 20 cm focal length.
- Optical Bench with 3 Stands — one-metre double-rod bench with index-marked sliders.
- Concave Mirror — 50 mm spherical mirror for comparing mirror and lens images.
Mirrors, prisms and glass slabs for ray-optics work are also in Physics Lab.
Request a Quote
Use Add To Cart or write through the contact page giving the number of lenses, model JL243 and the delivery city.
Last updated: 26 October 2026
