Concave Lens
Product Code : SCL-PLE-11766
The StemAids 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. Manufactured to ISO 9001:2015 standards, 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 |
|
ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
|
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
StemAids 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 StemAids 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.
