Plano Concave Lenses

///Plano Concave Lenses

Plano Concave Lenses

Plano-Concave Lenses are spherical negative lenses with one concave surface and one smooth surface. These lenses bend parallel light rays to the opposite side of the lens and thus have a negative focal length. Such lenses can be used to diverge light or to increase an optical system’s focal length.

Download Datasheet

Please contact our multilingual professional sales team for more information or to place an order.

You can reach us at sales@z-optics.com or call + 86-577-8181-0885.

Categories: ,

Product Catalogue

Part No. f (mm) dia.(mm) R1 (mm) tc (mm) te (mm) fb (mm)
LEN2101 -20.0 10.0 10.37 2.0 3.2 -21.3
LEN2102 -15.0 12.7 7.78 2.0 5.3 -16.3
LEN2103 -20.0 12.7 10.37 2.0 4.1 -21.3
LEN2104 -25.0 12.7 12.96 2.0 3.7 -26.3
LEN2105 -30.0 12.7 15.55 2.0 3.4 -31.3
LEN2106 -50.0 12.7 25.92 2.0 2.8 -51.3
LEN2107 -100.0 12.7 51.83 2.0 2.3 -101.3
LEN2108 -75.0 15.0 38.87 2.0 2.7 -76.3
LEN2109 -40.0 21.0 20.73 2.0 4.7 -41.3
LEN2110 -25.0 25.0 12.968 2.0 10.9 -26.3
LEN2111 -35.0 25.4 18.14 2.0 7.2 -36.3
LEN2112 -50.0 25.4 25.92 2.0 5.3 -51.3
LEN2113 -75.0 25.4 38.87 2.0 4.1 -76.3
LEN2114 -100.0 25.4 51.83 2.0 3.6 -101.3
LEN2115 -125.0 25.4 64.79 2.0 3.3 -126.3
LEN2116 -150.0 25.4 77.75 2.0 3.0 -151.3
LEN2117 -175.0 25.4 90.70 2.0 2.8 -176.3
LEN2118 -200.0 25.4 103.66 2.0 2.7 -201.3
LEN2119 -300.0 25.4 155.49 2.0 2.5 -301.3
LEN2120 -500.0 25.4 259.15 2.0 2.3 -501.3
LEN2121 -80.0 30.0 41.46 2.0 4.8 -81.3
LEN2122 -50.0 38.0 25.92 3.0 11.3 -52.0
LEN2123 -100.0 38.0 51.83 3.0 6.6 -102.0
LEN2124 -150.0 38.0 77.75 3.0 5.5 -152.0
LEN2125 -200.0 38.0 103.66 3.0 4.8 -202.0
LEN2126 -50.0 40.0 25.92 2.0 11.2 -51.3
LEN2127 -100.0 50.0 51.83 3.0 9.4 -102.0
LEN2128 -200.0 50.0 103.66 3.0 6.1 -202.0
LEN2129 -400.0 50.0 207.32 3.0 4.5 -402.0
LEN2130 -500.0 50.0 259.15 3.0 4.2 -502.0
LEN2131 -800.0 50.0 414.64 3.0 3.8 -802.0

Specifications

Materical

BK7 or other optical glass, Fused Silica, ZnSe, CaF2

Diameter Tolerance

+0/-0.15mm

Paraxial Focal Length Tolerance

±2%

Centration

3 arc minutes

Surface Quality

60-40 scratch and dig

Clear Aperture

>85%

Surface Figure

λ/4@632.8nm

Chamfer

<0.25 mm x 45°

Product Knowledge

Applications:
1. Plano-Concave lenses are usually used for diverging collimated light beams in instruments such as Galilean beam expanders or telescopes
2. Plano-Concave lenses are also used for the beam expansion of pulsed lasers with high peak power. A beam incident would be focussed on a concave surface to a point outside the instrument