Bi-Concave Lens

Bi-Concave also known as Double-Concave lenses are often used for diverging light and image reduction, as well as increasing system focal lengths and collimating converging light beams. Bi-concave lenses are commonly utilized with other lenses in order to reduce the focal length of an optical system. With an extensive test glass inventory readily on hand and our unique background as OEM lens manufacturers, we are able to provide customized Bi-Concave Lenses per your applications specific requirement.


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
30716 10 25 MgF2