Shanghai Longway Special Glass Co., Ltd.
                                                                                                           
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18 Years
Since 2008
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Optical Grade Spherical Convex Lenses for Industrial Magnifier and Measuring Tool

Price Negotiable
Price: Negotiation
MOQ: 800 pcs
Delivery Time: 25 days
Brand: LONGWAY
Product Description



Optical Grade Spherical Convex Lenses for Industrial Magnifier and Measuring Tool

Material & Core Properties:
Crafted from premium optical-grade materials—typically BK7 (H-K9L) or crown glass—these lenses offer exceptional clarity and durability for industrial environments. Key properties include:

  • High Optical Clarity & Low Distortion: Precision annealing and fine grinding ensure excellent homogeneity and minimal wavefront distortion, providing a true-to-life magnified image critical for measurement accuracy.

  • Precision-Ground Spherical Surfaces: Surfaces are figured to exacting radii with high surface accuracy (λ/4 or better), ensuring consistent magnification power and focal length across all production units.

  • Robust Coating Options: Available with broadband anti-reflective (AR) coatings to reduce glare and enhance light transmission, or with protective hard coatings to resist scratches and chemical exposure in harsh settings.

  • Mechanical Durability: The lenses are designed to withstand vibration, minor impacts, and environmental contaminants commonly found in workshops and production floors.


Primary Function:
The positive, converging design of the spherical convex lens serves two core functions in industrial applications:

  1. Angular Magnification: To enlarge small objects, surface details, or fine print, enabling visual inspection of defects, assembly alignment, or component identification.

  2. Focal Point Precision: To provide a well-defined focal plane, which is essential for measurement tools that rely on precise optical alignment, such as toolmakers' microscopes or optical comparators.


Key Applications:

  • Industrial Magnifiers: Integrated into handheld magnifying glasses, bench magnifiers, and inspection lamps for quality control (QC), electronics assembly (PCB inspection), and jewelry crafting.

  • Precision Measuring Instruments: A core component in optical micrometers, profilometers, autocollimators, and linear measurement systems where accurate edge detection and feature sizing are critical.

  • Machine Vision & Automated Inspection: Used as primary or auxiliary optics in automated imaging systems for part verification, dimension checking, and flaw detection.

  • Tooling & Fabrication: Essential in alignment scopes, drilling jigs, and engraving machines to guide precise mechanical operations.

Name optical lens
Material Bk-7,Pyrex,Fused Silica
Diameter Tolerance +0/-0.2 mm
Thickness Tolerance +/-0.2 mm
Cler Aperture over 90%
Surface Quality 80/50~10/5 scratch and dig
Transmission above 92%
Chamfer 0.1-0.3 mm x 45 degree
Coating available













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Company Shanghai Longway Special Glass Co., Ltd.
Location Rm. 2111, Bldg. A, Tomson Center, No. 188, Zhangyang Rd., Shanghai, China
Contact Person Dai

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