Optical Needle | Parallax Pin
Product Code : SCL-PLE-11751
The StemAids Optical Needle, also commonly known as a Parallax Pin, is a fundamental tool for geometrical optics experiments. Engineered for high visibility and precision, it is designed for use with optical benches, glass slabs, and mirrors to trace the path of light and determine focal lengths through the method of no-parallax. Manufactured to ISO 9001:2015 standards, it provides a simple yet essential solution for visualizing image formation in institutional laboratory environments.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material Construction |
Hardened Stainless Steel or Nickel-plated Bright Steel |
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Tip Geometry |
Precision-ground needle point for sharp focus and minimal error |
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Mounting Interface |
Mounted on a heavy, stable circular base or designed for optical bench riders |
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Height Adjustability |
Available in fixed heights or with an adjustable telescopic stem |
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Visibility Enhancements |
High-contrast blackened tip or colored marking for easy sighting |
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Standard Dimensions |
Typically 100mm to 150mm in height |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
9023.00.00 (Educational/demonstrational scientific apparatus) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Parallax Visualization Interface: Facilitates student understanding of the concept of relative motion, supporting Geometrical Optics Module 101 by demonstrating how to eliminate the "shift" between an object and its image.
- Focal Length Quantification: Enables the physical determination of focal points (f), allowing learners to apply the no-parallax method to locate the exact position of real images formed by lenses and mirrors.
- Ray Tracing Analysis: Supports the analysis of light propagation by serving as a physical marker for incident and emergent rays when used with glass slabs or prisms.
- Measurement Accuracy Evaluation: Allows students to evaluate the impact of alignment errors and "zero-parallax" on the precision of optical measurements.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring protective tip-caps and anti-rust paper wrapping to prevent blunting or oxidation during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a guide on "The Method of No-Parallax" in English.
- Durability: Tropicalized design featuring corrosion-resistant plating, ensuring the needle remains bright and the tip sharp in high-humidity laboratory settings.
Direct OEM Sourcing Advantages
Procuring the StemAids Optical Needle directly ensures vertical manufacturing control:
- In-House Tip Grinding: Every needle is inspected under magnification to ensure a perfectly centered and sharp point, reducing experimental error.
- Batch-Tested for Verticality: Every unit is checked to ensure the needle is perfectly perpendicular to the base, which is critical for accurate alignment on an optical bench.
- Direct Factory Spares Availability: Guaranteed availability of replacement needles, bases, and rider-compatible stems to maintain complete laboratory sets.
- Manufacturing Control: Direct oversight of the plating process ensures a smooth, non-reflective finish that prevents glare from interfering with the student's sighting process.
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