Double concave cylindrical lens focus or expand light in one axis only. They can be used to focus light into a thin line in optical metrology, laser scanning, spectroscopic test, laser diode, and optical processor applications.
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The Application of Cylindrical Lens
Correcting astigmatism: Aligning with the direction of astigmatism, focusing the light onto a single plane, and correcting distorted or blurry images.
Laser beam shape correction: Reconfigure the laser beam, especially in semiconductor lasers, to enhance quality and achieve a circular profile.
Spectroscopy: In spectroscopy applications (such as gratings), adjust the spatial and spectral properties of light.
Laser line scanning: Converting the laser beam into a straight line, used for 3D measurement and quality control and other use cases.
Microscopy:Improving confocal microscopy by shaping the laser beam, correcting aberrations, and enhancing the signal-to-noise ratio in fluorescence microscopes.
Parameter
| Structure | Bi Concave Cylindrical lens |
| Material | Optical glass, UVFS, Germanium, Silicon, CaF2, MgF2, ZnSe ZnS, Sapphire |
| Diameters Available | 2mm to 600mm |
| Diameter Tolerance | +0.00/-0.02mm or customer design |
| Surface Quality | 10-5 |
| Surface Irregularity | λ/10 @632.8nm or customer design |
| Thickness tolerance | +0/-0.02mm |
| Clear Aperture | >90% of Diameter |
| Chamfer | 0.05-0.5mmx45degree, according to customer's needs. |
| Centeration | 3 arcmin |
| Coating | Single Mag2, Multiple Layers AR Coating A: 350-650nm B: 650-1050nm C: 1050-1585nm D: Customer Design |
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