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Knight Optical(UK) Ltd - sales@knightoptical.co.uk - +44 (0)1622 859444

Planoconvex lenses

What are you looking for in Stock?

Planoconvex lenses have one plane and one convex surface and have a positive focal length. Planoconvex lenses are typically used for focusing or collecting light in optical systems.

Knight Optical stock a range of plano-convex lenses (PCX lens) available from 2.5mm dia up to 100mm dia in a full range of focal lengths and materials to meet most applications.  Stock planoconvex are offered as uncoated and antireflective coated ranges for increased performance from UV to NIR wavelengths. In addition to our standard stock coating, we also offer custom broadband antireflective coatings for 630-1100nm and 1050-1700nm.

Planoconvex lenses form a moderate quality image close to the axis. They are generally used as elements within a more complex lens system or optical instrument in imaging systems, lasers and detectors.


We can offer custom planoconvex lenses to meet your requirements or alternatively edge stock lenses for a quick turnaround, please enquire.

Quality BK7/SF11 or equivalent planoconvex lenses: Planoconvex lenses have one plane and one convex surface and have a positive focal length. Planoconvex lenses are typically used for focusing or collecting light in optical systems. Plano-convex lenses are normally made of a medium index crown glass such as BK7 or equivalent or BaK4 or equivalent however for lower spherical aberrations lenses high index glass is used typically SF11 or equivalent. These BK7/SF11 or equivalent planoconvex lenses are available uncoated or AR coated for extended visible and NIR wavelength applications.

UV fused silica planoconvex lenses: These simple Fused Silica planoconvex lenses have a convex spherical face and a plano face resulting in a positive focal length. Synthetic Fused Silica is an excellent choice of material for deep ultra-violet spectral range applications. UV Grade Fused Silica has exceptional chemical purity, excellent thermal properties with low fluorescence making an ideal choice for medical fluorescence applications. Our stock range of planoconvex UV Grade Fused Silica lenses are available uncoated or antireflective coated on both faces with multilayer AR for 248-400nm use. However UV Grade Fused Silica can be used efficiently at 185nm transmitting over 85%.

Planoconvex lens sets: Our ranges of planoconvex lenses are also available as convenient lens sets.

Here we offer our quality BK7/ SF11 or equivalent and quality UV Grade Fused Silica planoconvex lenses at special discount lens set prices. Our lens sets cover multiple focal length ranges and are very convenient for laboratory and research work.   


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Our Multi-Lingual Sales Team are here to help with your requirments:

UK +44 (0)1622 859444
UK +44 (0)1622 850614
UK +44 (0)1622 851078
+1 401 583 7846

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