Shanghai Longway Special Glass Co., Ltd.
| Payment Terms | T/T,Western Union |
| Supply Ability | 30000 Pieces per Month |
| Packaging Details | electrolytic capacitor paper,foam,carton |
| Structure | Convex |
| Surface | Optical grade |
| Transmission | over 90% |
| Coating | available |
| Application | Optics and lighting |
| Port | Shanghai |
| Brand Name | LONGWAY |
| Model Number | LW241231 |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 30000 Pieces per Month |
| Packaging Details | electrolytic capacitor paper,foam,carton | Structure | Convex |
| Surface | Optical grade | Transmission | over 90% |
| Coating | available | Application | Optics and lighting |
| Port | Shanghai | Brand Name | LONGWAY |
| Model Number | LW241231 | Certification | ISO9001 |
| Place of Origin | China | ||
| High Light | optical magnifying glass ，optical double convex lens ，High Clarity Optical Glass | ||
High Clarity Optical Double Convex Magnifying Glass for Stamp and Coin Collectors
1. Material Composition:
Optical-Grade Glass: High-transparency, low-impurity borosilicate or crown glass with minimal distortion.
Double-Convex Design: Precisely ground and polished curved surfaces on both sides for superior magnification and reduced spherical aberration.
2. Key Properties:
High Magnification Power: Ranges from 5x to 20x magnification for detailed inspection of fine textures, engravings, and defects.
Exceptional Clarity: >99% light transmission with anti-reflective coating to minimize glare and eye strain.
Minimal Distortion: Achromatic design corrects color fringing for true-to-life color accuracy.
Ergonomic Design: Lightweight, scratch-resistant, and often paired with built-in LED illumination for low-light environments.
3. Core Functions:
Detail Inspection: Enables precise examination of micro-features (e.g., stamp perforations, coin mint marks, and surface wear).
Authentication: Critical for detecting counterfeits, alterations, or hidden details in collectibles.
Portable Analysis: Handheld or stand-mounted designs for versatile use in fieldwork or displays.
4. Applications:
Stamp Collecting: Inspecting perforations, watermarks, and printing quality of rare stamps.
Coin Grading: Evaluating mint luster, scratches, and edge lettering for NGC/PCGS grading standards.
Antique Appraisal: Jewelry, vintage documents, and small artifact examination.
Hobbyist Use: Model building, engraving, and electronics repair.
| Item | Optical magnifying lens |
| Material | Optical glass, Qurartz glass, Pyrex, borosilicate glass, Float glass |
| Diameter Tolerance | +0/-0.2 mm |
| Thickness Tolerance | +/-0.2 mm |
| Processed | by grinding, polishing |
| Surface Quality | 80/50,60/40 |
| Material Quality | no scratches and air bubble |
| Transmission | above 90% |
| Chamfer | 0.1-0.3 mm x 45 degree |
| Surface Coating | Available |
| Usage | Photography, Lighting system, Electronic apparatus |
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company,Seller
Year Established:
2008
Total Annual:
1000000-5000000
Employee Number:
30~100
Ecer Certification：
Verified Supplier
Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines... Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines...
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