Concave Lens Manufacturer,Supplier and Exporter in India
Product Code : SCL-LAO-11235
A concave lens is thinner at its centre than at its edges. It causes parallel incident light rays to spread apart after refraction. These diverging rays appear to originate from a virtual principal focus located on the same side of the lens as the incoming light.
The lens helps students compare converging and diverging optical components through practical observation and ray tracing. It forms a virtual, upright and diminished image of a real object. Lens material, focal length, surface curvature, centre thickness and optical tolerances are not specified and should be confirmed before procurement.
Key Features
Two diameter options: Available in nominal 50 mm and 75 mm sizes for compatible laboratory setups.
Diverging optical action: Spreads parallel incident rays after they pass through the lens.
Demonstrates virtual images: Produces an upright and diminished image of a real object.
Supports focal-length experiments: Can be used with a suitable convex lens and optical arrangement to determine focal length.
Useful for ray tracing: Helps students connect geometrical-optics diagrams with observed ray paths.
No electrical power required: Functions as a passive optical component.
Reusable teaching resource: Suitable for repeated practical work when handled and stored correctly.
Technical Specifications
|
Specification |
Detail |
|
Product name |
Concave Lens |
|
Brand |
Lab Exports |
|
Product category |
Light and Optics Laboratory Equipment |
|
Lens type |
Concave diverging lens |
|
Available diameters |
50 mm and 75 mm |
What's Included in the Kit
One Concave Lens in the selected 50 mm or 75 mm diameter
A lens holder, optical bench, light source, ray box, screen and measuring scale are not confirmed as included.
Applications / Uses
Demonstrating divergence of parallel light rays
Studying refraction through a concave lens
Observing virtual, upright and diminished images
Locating the virtual principal focus by ray construction
Comparing concave and convex lens behaviour
Determining focal length with a compatible optical setup
Supporting geometrical-optics and ray-diagram lessons
How to Use the Concave Lens
Mount the lens vertically in a compatible lens holder.
Align the lens with the light source or ray box along the optical axis.
Direct narrow parallel rays towards the lens.
Observe the rays spreading apart after refraction.
Trace the refracted rays on paper or an optical board.
Extend the traced rays backwards to locate the virtual focus.
Repeat with different ray positions or object distances.
Safety note: Never look directly into a laser or intense light source. Handle the lens by its edges and discontinue use if it becomes cracked or chipped.
Care & Maintenance
Clean both optical surfaces with a soft lens cloth.
Handle the lens by its edges to minimise fingerprints.
Store it in a dry, padded compartment after use.
Do not place the optical surface directly on a hard bench.
Why Choose Lab Exports
Lab Exports manufactures and exports scientific laboratory instruments, physics experiment apparatus, educational models, science kits and STEM products. Buyers can explore related light and optics laboratory equipment, the broader physics laboratory equipment range and the Laser Ray Box for compatible ray-tracing activities. The required diameter, focal length and mounting arrangement should be confirmed in the commercial quotation.
Frequently Asked Questions
What is a concave lens used for in a physics laboratory?
A concave lens is used to demonstrate refraction, divergence of light, virtual focus and virtual image formation. It also supports comparisons with convex lenses.
Which concave lens sizes are available?
The available nominal diameter options are 50 mm and 75 mm. The selected size should match the lens holder and experimental setup.
What type of image does a concave lens form?
A concave lens forms a virtual, upright and diminished image of a real object. The image appears on the same side of the lens as the object.
What is the focal length of the lens?
The focal length is not specified. Buyers requiring a particular negative focal length should state it in their enquiry.
Can the image be projected onto a screen?
No. The image formed by a concave lens from a real object is virtual and cannot normally be projected directly onto a screen.
Is a lens holder included?
A lens holder is not confirmed as included. Request a component-wise quotation when a complete experiment setup is required.
Select the required diameter and request focal-length confirmation from Lab Exports, or browse the complete laboratory equipment range for institutional and export enquiries.
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