Concave Lens Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12437
Jlab Export is a leading Concave Lens Manufacturer,and suppliers in India
Concave Lens (code EL-PL-12437) is a 50 mm diameter diverging lens with ground edges and a 20 cm focal length, model JL241. Light leaving it spreads out as if from a virtual focus on the incoming side, so in the sign convention its focal length is taken as −20 cm. Made in Ambala, India, by JLab.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL241 |
| Type | Concave (diverging) 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-12437 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Measuring a Diverging Lens on the Bench
A concave lens cannot throw a real image onto a screen by itself. Form a sharp image with a convex lens first, then place the concave lens in the converging beam, less than 20 cm before that image: the first image now acts as a virtual object, and the screen must move back to catch the new image. The two screen positions give u and v for the concave lens. Viewed directly, a page seen through it looks upright and reduced.
Related Optics Items
- Convex Lens — 50 mm converging lens for forming the first real image.
- Optical Bench with 3 Stands — one-metre bench with index-marked metal sliders.
- Convex Mirror — 50 mm spherical mirror that also forms only virtual images.
Other lenses, mirrors and prisms are listed under Physics Lab.
Request a Quote
Order through Add To Cart, or send the quantity, model JL241 and delivery address via the contact page.
Last updated: 26 October 2026
