Convex Lens
Product Code : SCL-LAO-11234
Quick answer: A convex lens is a converging lens, thicker at the centre than at the edges, that brings parallel rays to a principal focus. In the physics lab it is used to form real images on a screen, find focal length and verify the lens formula 1/v - 1/u = 1/f. It is offered in 50 mm and 75 mm diameters. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Parameter | Detail |
|---|---|
| Lens type | Convex (converging), thicker at the centre |
| Diameters | 50 mm or 75 mm (nominal) |
| Principles shown | Refraction, convergence, focal length, image formation |
| Power | None; passive optical component |
| Supplied as | One lens in the selected diameter |
Focal length and lens material are confirmed with the quotation; a lens holder, optical bench, screen and light source are not included unless quoted.
How the convex lens experiment is done
Light passing through a convex lens is refracted at both curved surfaces and bent towards the principal axis, so rays parallel to the axis meet at the principal focus F. For an object beyond F the lens forms a real, inverted image that can be caught on a screen; moving the object changes both the image distance and the image size.
- Mount the lens upright in a lens holder on an optical bench or beside a metre scale.
- For a quick estimate, focus a distant window or tree on a screen; the lens-to-screen distance is roughly the focal length.
- Place an illuminated object at a measured distance u and move the screen until a sharp image forms; record v.
- Repeat for several object distances and calculate f from 1/v - 1/u = 1/f, or plot 1/v against 1/u.
Key features
- Offered in nominal 50 mm and 75 mm diameters to suit different holders and bench set-ups.
- Converging form brings parallel rays to a real principal focus.
- Forms real images on a screen for object-distance and magnification studies.
- Supports both the distant-object method and the lens-formula method of finding focal length.
- Passive component with no power supply, reusable for years when handled by the edges.
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the convex lens at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Light and Optics products
- Concave Lens (SCL-LAO-11235)
- Concave Mirror (SCL-LAO-11236)
- Convex Mirror (SCL-LAO-11237)
- Ray Optics Kit (SCL-LAO-11229)
- Magnifier Glass 3" (SCL-LAO-11225)
- Optical Needle / Parallax (SCL-LAO-11216)
The full range is in the Light and Optics section of the Physics Lab range.
Frequently asked questions
What is the focal length of this convex lens?
The focal length is not listed on this page. State the focal length needed with house code SCL-LAO-11234 and the 50 mm or 75 mm diameter, and the quotation will confirm it.
Which experiments use a convex lens?
Finding focal length by the distant-object and u-v methods, verifying the lens formula, and studying how the position and size of a real image change with object distance.
What is the price of the convex lens?
Prices are not published on the website. Add the convex lens to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code SCL-LAO-11234 and the quantity, to receive a quotation.
Does Lab Exports manufacture the convex lens?
Yes. Lab Exports manufactures the convex lens at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code SCL-LAO-11234.
Request a quote
Email [email protected] with the house code SCL-LAO-11234 and the quantity, or add the convex lens to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
