G Lens
A G-lens, or gradient-index lens, is an optical element whose refractive index varies gradually inside the material rather than remaining constant as in a conventional lens. The variation is usually radial, from the center toward the edge, causing light to follow a continuously curved path within the lens instead of bending abruptly at the surface.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Refractive Index Profile Type [Parabolic; Linear/Nonlinear] | Radial (Parabolic), Axial (Linear/Nonlinear) |
| Optional Materials [Infrared; Polymer] | Aluminosilicate Glass, Silicon (Infrared), Germanium, PMMA (Polymer) |
| Diameter Range | 0.1 mm～2 mm |
| Length Options [Custom Length Available] | Typically P/4, P/2 or P (Custom Lengths Available) |
| Numerical Aperture (NA) [Dependent on Refractive Index Gradient and Application] | 0.2~0.5 (Depending on Refractive-Index Gradient and Application) |
| Surface Quality [ISO 10110 Standard] | 40/20 to 20/10 (ISO 10110) |
| Surface Roughness [Suitable for High-Precision Optical Coupling] | <1 nm RMS (For High-Precision Optical Coupling) |
| Focusing Conditions | L = P/4 → light focused at the output end face |
| Wavelength Compatibility [Glass ; Silicon] | UV to near-IR (glass), 1～8 μm (silicon), adjusted through material selection |
| Transmission Efficiency [Antireflection Coating Available] | >95% (Antireflection Coating Available) |
Applications
Datasheet
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Supplier Information
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