Concave Lens
Product Code : SCL-PLE-11766
The JLab India Concave Lens is a precision-ground optical component engineered for the empirical study of light divergence and virtual image formation. Optimized for Secondary and University-level physics, this lens (also known as a diverging lens) is thinner at the center than at the edges. It facilitates the quantification of focal lengths and the study of corrective optics for myopia within institutional laboratory environments.
Technical Specifications
| Tender Specification | OEM Technical Detail |
| Material Construction | High-transmittance Optical Flint/Crown Glass or Optical Grade Acrylic |
| Geometry | Bi-concave (Double concave) with ground and polished edges |
| Standard Diameters | 50mm (Standard) |
| Focal Lengths (f) | Typically −10cm, −15cm, or −20cm (Negative focal length) |
| Surface Quality | Scratch-dig 60/40 or better for minimal light scattering |
| Mounting Compatibility | Designed for standard 50mm lens holders and optical benches |
Certification | ISO certificates available on request |
| HS Code | 9001.90.00 (Lenses, prisms, mirrors of any material) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Light Divergence Interface: Facilitates student visualization of how incident parallel rays diverge after passing through the lens, supporting Geometrical Optics Module 101.
- Virtual Image Quantification: Enables the physical study of image properties, allowing learners to apply the lens formula f1=v1−u1 to determine the position of virtual, upright, and diminished images.
- Optometric Analysis: Supports the analysis of refractive errors by demonstrating how concave lenses are used to correct Nearsightedness (Myopia) by shifting the image onto the retina.
- Complex System Evaluation: Allows students to evaluate the performance of Galilean telescopes or beam expanders where concave lenses are used in conjunction with convex lenses.
International Logistics & Compliance
JLab India ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring individual lint-free protective pouches and shock-absorbing foam inserts to prevent chipping or surface scratching.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a datasheet specifying the Refractive Index (n) and radius of curvature.
- Durability: Tropicalized design featuring anti-fungal coatings to prevent "glass bloom" or degradation in high-humidity laboratory climates.
Direct OEM Sourcing Advantages
Procuring the JLab India Concave Lens directly ensures vertical manufacturing control:
- In-House Centration Testing: Every lens is batch-tested to ensure the optical axis is perfectly centered, reducing experimental error in optical bench alignments.
- Precision Focal Calibration: Every lens is etched or marked with its precise focal length, ensuring students have accurate baseline data for their calculations.
- Direct Factory Spares Availability: Guaranteed availability of matching lens holders, cleaning kits, and specialized apertures to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the polishing process ensures high surface regularity, minimizing aberrations and providing a sharp, high-contrast virtual image.
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