For proper performance with a plano-convex lens, the curved surface should face toward the incoming collimated beam or the longer conjugate distance (the object and image distances together are referred to as the conjugate distance).
In addition to the standard focal lengths listed here, II-VI maintains an extensive inventory of test plates and tooling. This enables fabrication of many other focal lengths without additional tooling charges.
Besides the plano-convex, meniscus, and aspheric lens shapes offered in this catalog, II-VI routinely fabricates biconvex and negative focal length lenses upon request. Our in-house optical engineers can design the component or optical system which provides the exact performance you require. Please contact our sales and engineering staff for a quotation.
|
Specifications
|
Standards
|
|
Effective Focal Length (EFL) Tolerance
|
±2%
|
|
Dimensional Tolerance
|
Diameter: +0.000”-0.005”
Thickness: ±0.010” |
|
Edge Thickness Variation (ETV)
|
<= 0.002”
|
|
Clear Aperture (polished)
|
90% of diameter
|
|
Surface Figure at 0.63µm
|
Plano: 1 fringe Power
1/2 fringe Irregularity Radius: varies depending upon radius |
|
Scratch-Dig
|
20-10
|
|
AR Coating Reflectivity per Surface at 10.6µm
|
<= 0.20%
|
|
|
|
|
Part #
|
Description
|
Diameter
(inches) |
Diameter
(mm) |
Focal
Length |
Working
Distance |
Edge
Thickness (inches) |
Edge
Thickness (mm) |
|
123265
|
ZnSe
|
0.50
|
12.7
|
1.0”
|
-
|
0.060
|
1.52
|
|
379095
|
ZnSe
|
0.75
|
19.05
|
1.0”
|
-
|
0.085
|
2.16
|
|
104370
|
ZnSe
|
1.0
|
25.4
|
2.5”
|
-
|
0.085
|
2.16
|
|
614868
|
ZnSe
|
1.0
|
25.4
|
5.0”
|
-
|
0.102
|
2.59
|
|
949585
|
ZnSe
|
1.0
|
25.4
|
10.0”
|
-
|
0.111
|
2.82
|
|
696289
|
ZnSe
|
1.1
|
27.94
|
2.5”
|
-
|
0.085
|
2.16
|
|
561067
|
ZnSe
|
1.1
|
27.94
|
5.0”
|
-
|
0.160
|
4.06
|
|
774048
|
ZnSe
|
1.1
|
27.94
|
7.5”
|
-
|
0.106
|
2.69
|
|
982910
|
ZnSe
|
1.1
|
27.94
|
10.0”
|
-
|
0.109
|
2.77
|
|
803557
|
GaAs
|
1.5
|
38.1
|
2.5”
|
-
|
0.0799
|
2.03
|
|
101766
|
ZnSe
|
1.5
|
38.1
|
2.5”
|
-
|
0.300
|
2.62
|
|
975597
|
GaAs
|
1.5
|
38.1
|
3.5”
|
-
|
0.354
|
8.99
|
|
441406
|
ZnSe
|
1.5
|
38.1
|
3.75”
|
-
|
0.086
|
2.18
|
|
941031
|
ZnSe
|
1.5
|
38.1
|
-
|
5.0”
|
0.280
|
7.11
|
|
578662
|
ZnSe
|
1.5
|
38.1
|
5.0”
|
-
|
0.300
|
7.62
|
|
464497
|
ZnSe
|
1.5
|
38.1
|
-
|
7.5”
|
0.280
|
7.11
|
|
306068
|
ZnSe
|
1.5
|
38.1
|
7.5”
|
-
|
0.300
|
7.62
|
|
892020
|
ZnSe
|
2.0
|
50.8
|
7.5”
|
-
|
0.310
|
7.87
|
|
232771
|
ZnSe
|
2.0
|
50.8
|
7.5”
|
-
|
0.380
|
9.65
|
|
236670
|
ZnSe
|
2.5
|
63.5
|
10.0”
|
-
|
0.390
|
9.90
|
|
|
|
|
|
|
|
|
|
