Magnifier Glass 3”
Product Code : SCL-PLE-11762
The StemAids 3-Inch Magnifier Glass is a precision-ground biconvex lens engineered for the empirical study of basic optics and high-resolution specimen inspection. Optimized for Primary, Secondary, and University-level science, this hand-held magnifier facilitates the visualization of enlarged virtual images. Manufactured to ISO 9001:2015 standards, it provides a distortion-free solution for examining biological, geological, and metallurgical samples within institutional laboratory environments.
Technical Specifications
|
Tender Specification |
OEM Technical Detail |
|
Lens Diameter |
75mm (3 Inches) |
|
Lens Type |
Biconvex (Double-convex) spherical lens |
|
Material Construction |
High-transmittance Optical Glass or Scratch-resistant Acrylic |
|
Magnification Power |
Typically 2x to 5x (depending on focal length) |
|
Frame & Handle |
High-impact ABS polymer or chrome-plated metallic rim |
|
Focal Length |
Optimized for comfortable reading and inspection distances |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
|
HS Code |
9013.80.00 (Magnifying glasses) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Virtual Image Interface: Facilitates student visualization of how light rays converge and appear to diverge from a point behind the lens, supporting Geometrical Optics Module 101.
- Magnification Quantification: Enables the physical study of lens power, allowing learners to apply the lens formula f1=v1−u1 to calculate focal length and linear magnification.
- Morphological Analysis: Supports the analysis of minute structures in botany and entomology, such as leaf venation or insect anatomy, that are invisible to the naked eye.
- Aberration Evaluation: Allows students to evaluate optical phenomena such as spherical and chromatic aberration at the edges of the lens, fostering a deeper understanding of lens quality.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade bulk packaging featuring individual lint-free pouches and shock-resistant boxing to prevent lens cracking or scratching during maritime transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a guide on "Basic Ray Tracing with Hand Magnifiers."
- Durability: Tropicalized design featuring anti-fungal lens coatings to prevent "glass bloom" in high-humidity laboratory environments.
Direct OEM Sourcing Advantages
Procuring the StemAids Magnifier Glass (3”) directly ensures vertical manufacturing control:
- In-House Lens Grinding: Every lens is batch-checked for surface regularity to ensure a clear image without significant peripheral distortion.
- Batch-Tested for Uniform Reliability: The mechanical bond between the handle and the rim is stress-tested to ensure the lens remains secure during rigorous student use.
- Direct Factory Spares Availability: Guaranteed availability of various diameters (50mm,75mm,100mm) to meet specific departmental requirements.
- Manufacturing Control: Direct oversight of the polishing process ensures high light transmission and minimal reflection, providing a bright, high-contrast view for the observer.
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