Hemispherical Lens
Although spherical lens and hemispherical lens belong to the category of optical lens, they have their own characteristics in structure and application. The spherical lens is known for its complete spherical structure, with spherical symmetry, so the optical focal length is fixed, often used in imaging optical systems, such as cameras, microscopes, etc., to ensure the stability of optical performance. The hemispherical lens, as the name suggests, is half of the spherical lens, and its shape is somewhat different from that of the spherical lens, losing spherical symmetry, resulting in possible differences in curvature radius and optical focal length at different locations. Half-Ball lenses are variants of ball lenses, obtained by simply cutting the ball lenses in half.Due to ease of mounting brought by the one flat surface,they are ideal for applications where more compact designs are required , such as fiber communication, endoscopy, microscopy, optical pick-up devices, and laser measurement systems.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material [Normal] | Optical glass |
| Material [High Precision] | Optical glass |
| Material [Mfg.Limit] | Optical glass |
| Diameter Tolerance [Normal] | +0/-0.1mm |
| Diameter Tolerance [High Precision] | +0/-0.5mm |
| Diameter Tolerance [Mfg.Limit] | +0/-0.1 |
| Surface Quality [Normal] | 60-40 |
| Surface Quality [High Precision] | 40-20 |
| Surface Quality [Mfg.Limit] | 10-5 |
| Diameter Ellipticity [Normal] | 0.01 |
| Diameter Ellipticity [High Precision] | 0.005 |
| Diameter Ellipticity [Mfg.Limit] | 0.001 |
| Clear Aperture [Normal] | >80% |
| Clear Aperture [High Precision] | >85% |
| Clear Aperture [Mfg.Limit] | >90% |
Key Features
Datasheet
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Supplier Information
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