Glass Lens
A glass lens is a transparent optical element made of optical glass. Its core function is to change the direction of light propagation through the phenomenon of light refraction, achieving light convergence, divergence, or collimation, and it is the "core organ" of optical equipment such as cameras, glasses, microscopes, and telescopes. When light enters glass from air, because the optical densities of air and glass differ, the propagation speed changes, causing the light to refract. The curved shape of the lens determines the direction of the refracted light: a convex surface converges light toward the center, while a concave surface diverges light toward the edges. Glass lenses include the following types: convex lenses, concave lenses, combination lenses, etc.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Diameter [Standard Level] | 2 - 35 mm |
| Diameter [Optimal Level] | 1.2 - 50 mm |
| Diameter [Inspection Equipment] | Digital Micrometer |
| Center Thickness Tolerance [Standard Level] | ±0.01 mm |
| Center Thickness Tolerance [Optimal Level] | ±0.005 mm |
| Center Thickness Tolerance [Inspection Equipment] | Digital Micrometer |
| Surface Figure Accuracy [Standard Level] | PV ≤ 0.8 µm, RMS ≤ 0.4 µm |
| Surface Figure Accuracy [Optimal Level] | PV ≤ 0.4 µm, RMS ≤ 0.2 µm |
| Surface Figure Accuracy [Inspection Equipment] | UA3P Profilometer |
| Centration Error [Standard Level] | 5 µm |
| Centration Error [Optimal Level] | 3 µm |
| Centration Error [Inspection Equipment] | UA3P Profilometer |
| Surface Defects [Standard Level] | 3x0.25 |
| Surface Defects [Optimal Level] | 2x0.1 |
| Surface Defects [Inspection Equipment] | Visual Inspection or Microscope |
Datasheet
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Supplier Information
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