| Customization: | Available |
|---|---|
| After-sales Service: | Support After-Sales Service |
| Warranty: | 2 Years |
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The plano-concave lens converts a beam of parallel light into divergent light rays, and the divergent light rays are reversely focused on the virtual focal point of the plano-concave lens. The focal length is negative, and one side is flat and the other is concave. Plano-concave lenses diverge a collimated beam of light from a virtual focal point and are commonly used in Galilean-type beam expanders. In use, the concave side faces the direction of the incident light and the flat side faces the focal plane to be processed. Plano-concave lenses have negative focal lengths and negative spherical aberration, which can be used to cancel out the aberrations of other lenses in the system.
| Diamenter(mm) | Focusing Length(mm) | Black Focusing Length(mm) | Center Thickness(mm) | Edge Thickness(mm) | Redius Curvature(mm) |
| 9.0 | -27.0 | -28.3 | 2.0 | 2.7 | -13.9 |
| 12.7 | -25.0 | -27.0 | 3.0 | 4.7 | -12.9 |
| 12.7 | -30.0 | -32.0 | 3.0 | 4.4 | -15.4 |
| 12.7 | -50.0 | -52.3 | 3.5 | 4.3 | -25.7 |
| 25.0 | -75.0 | -77.3 | 3.5 | 5.6 | -38.6 |
| 25.4 | -50.0 | -52.3 | 3.5 | 6.9 | -25.7 |
| 25.4 | -75.0 | -77.3 | 3.5 | 5.6 | -38.6 |
| 25.4 | -100.0 | -102.6 | 4.0 | 5.6 | -51.5 |
| 50.8 | -100.0 | -102.6 | 4.0 | 10.7 | -51.5 |
| 25.0 | -150.0 | -125.6 | 4.0 | 8.3 | -77.2 |
Negative lens, Imaging lens, Beam expander lens, Beam reducer lens, Beam collimating lens, Diverging collimated beam, Collimated diverging beam, Application fields: Telescope, Nearsighted lens, Camera lens, Microscope, Magnifying glass, Light receiver and condenser lens Etc.
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