Plano-Concave Lens

Plano-Concave lenses have one flat surface, and one surface that curves inwards. This results in a negative focal length and negative spherical aberration, so PL-Cc lenses can be used to balance out aberrations of other lenses in the system. To maximize the use of PL-Cc lenses in a system to reduce spherical aberration, coma and distortion, object and image should be at absolute conjugate ratios greater than 5:1 and less than 1:5. They can be used for image reduction or to diverge light and are often utilized to increase the focal lengths in lens systems.


Diameter Surface Quality Diameter Tolerance Center Thickness Tolerance Edge Thickness Tolerance Centering Tolerance
3.00 - 5.00 40-20 +0/-0.05 +/-0.2 Reference 3-5arc mins
5.01 - 25.40 40-20 +0/-0.1 +/-0.2 Reference 3-5arc mins
25.41 - 40.00 60-40 +0/-0.1 +/-0.2 Reference 3-5arc mins
40.01 - 75.00 80-50 +0/-0.1 +/-0.2 Reference 3-5arc mins

Higher precision specifications available upon request. Please contact us with your specific requirement.

Important Note

If your requirement is not included in our stock list, please enquire with us as our in-house production facility can quickly and affordably customize off-the-shelf components to a variety of sizes and shapes that will meet standard, precision or high precision quality.

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P/n Dia. (mm) EFL (mm) Substrate Coating Qty