Plano-Concave Lenses

Plano-Concave (PCV) lenses are with one flat and one inward curved surface. The negative focal length of PCV lenses is used for image reduction or to spread light.

PCV diverges parallel input rays. The output rays do not actually meet to become a point, they do appear to be diverging from a virtual image located on the object side of the lenses. At absolute conjugate ratio greater than 5:1 and less than 1:5, PCV is almost the best of lenses to reduce spherical aberration, coma, and distortion. The curved surface of the lenses is supposed to face the object in distance or infinite conjugate, unless in a high energy laser system, this should be reversed to eliminate the possibility of a virtual focus.

Visoptos’ selection of plano-concave lenses, including BK7, SF11, UV-fused silica, and CaF2, that can be used in beam expanders and projection systems.

Visoptos specializes in manufacturing optical components from customer supplied designs, including a wide variety of Plano Concave Lenses. We can provide Featuring surface accuracy to less than 0.2 fringe measured at 633nm and finishes to 20-10 scratch-dig per MIL-PRF 13830, the material are fabricated from quartz, optical glass, silicon, etc. and the sizes up to 200mm dia.

Material: Optical Glass/CaF2/MgF2/Fused Silica/Ge

Size Range: 1-500mm

Dimension Tolerance: +0/-0.02mm

Surface Quality: 40/20-10/5

Radius Tolerance: +/-0.1%

Irregularity: 1/4-1/20 Lambda

Centering: <1 arcmin

EFL Tolerance: +/-1%

Clear Aperture: >95%

Coating: AR, BBAR, VIS, NIR, HR, VIS, NIR

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