Plano-Concave Lense
Plano-Concave Lense has a negative focal length and is typically used to cause a collimated beam to diverge as in a Galilean type beam expander or Telescope. Because the spherical aberration of the Plano-Concave is negative, it can be used to balance the aberration of other lenses.
Specifications:
| Material: |
BK7 or Other |
| Design Wavelength: |
546.1nm, n=1.518721 |
| Diameter Tolerance: |
+0.0, -0.15mm(Standard), +0.0, -0.02mm(Precision) |
| Paraxial Focal Length: |
±2% |
| Centration: |
3 arc minutes |
| Surface Figure : |
l/4 @ 632.8 nm |
| Surface Quality: |
40/20 |
| Clear Aperture: |
>80% |
| Bevel: |
<0.25mm X 45° |
| Coating: |
See Coating Service |
| Item# |
Dia(mm) |
f(mm) |
R(mm) |
Tc |
Te |
Fb |
| PCV1-001 |
6.0 |
-12.0 |
6.22 |
2.0 |
2.77 |
-13.31 |
| PCV1-002 |
6.0 |
-24.0 |
12.44 |
2.0 |
2.37 |
-25.31 |
| PCV1-101 |
12.7 |
-15.0 |
7.79 |
2.0 |
5.27 |
-16.35 |
| PCV1-102 |
12.7 |
-20.0 |
10.37 |
2.0 |
4.17 |
-21.32 |
| PCV1-103 |
12.7 |
-25.0 |
12.97 |
2.0 |
3.70 |
-26.33 |
| PCV1-104 |
12.7 |
-30.0 |
15.56 |
2.0 |
3.40 |
-31.31 |
| PCV1-105 |
12.7 |
-40.0 |
20.75 |
2.0 |
3.00 |
-41.32 |
| PCV1-106 |
12.7 |
-50.0 |
25.94 |
2.0 |
2.79 |
-51.33 |
| PCV1-107 |
12.7 |
-75.0 |
38.90 |
2.0 |
2.52 |
-76.31 |
| PCV1-108 |
12.7 |
-100.0 |
51.88 |
2.0 |
2.39 |
-101.33 |
| PCV1-201 |
25.4 |
-35.0 |
18.15 |
2.0 |
7.18 |
-36.32 |
| PCV1-202 |
25.4 |
-50.0 |
25.94 |
2.0 |
5.32 |
-51.33 |
| PCV1-203 |
25.4 |
-70.0 |
36.31 |
2.0 |
4.29 |
-71.32 |
| PCV1-204 |
25.4 |
-75.0 |
38.90 |
2.0 |
4.13 |
-76.31 |
| PCV1-205 |
25.4 |
-100.0 |
51.88 |
2.0 |
3.58 |
-101.33 |
| PCV1-206 |
25.4 |
-125.0 |
64.96 |
2.0 |
3.26 |
-126.36 |
| PCV1-207 |
25.4 |
-150.0 |
77.80 |
2.0 |
3.04 |
-151.30 |
| PCV1-208 |
25.4 |
-175.0 |
90.78 |
2.0 |
2.89 |
-176.32 |
| PCV1-209 |
25.4 |
-200.0 |
103.75 |
2.0 |
2.78 |
-201.33 |
| PCV1-210 |
25.4 |
-250.0 |
129.72 |
2.0 |
2.62 |
-251.39 |
| PCV1-211 |
25.4 |
-300.0 |
155.60 |
2.0 |
2.52 |
-301.29 |
| PCV1-212 |
25.4 |
-500.0 |
259.40 |
2.0 |
2.31 |
-501.39 |
| PCV1-213 |
25.4 |
-1000.0 |
518.70 |
2.0 |
2.16 |
-1001.28 |
| PCV1-301 |
30.0 |
-80.0 |
41.50 |
2.0 |
4.81 |
-81.32 |
| PCV1-302 |
30.0 |
-100.0 |
51.88 |
2.0 |
4.22 |
-101.33 |
| PCV1-303 |
30.0 |
-200.0 |
103.75 |
2.0 |
3.09 |
-201.33 |
| PCV1-401 |
38.0 |
-50.0 |
25.94 |
2.0 |
10.28 |
-51.33 |
| PCV1-402 |
38.0 |
-100.0 |
51.88 |
2.0 |
5.60 |
-101.33 |
| PCV1-403 |
38.0 |
-150.0 |
77.80 |
2.0 |
4.36 |
-151.30 |
| PCV1-404 |
38.0 |
-200.0 |
103.75 |
2.0 |
3.76 |
-201.33 |
| PCV1-405 |
38.0 |
-350.0 |
181.55 |
2.0 |
3.00 |
-351.31 |
| PCV1-406 |
38.0 |
-500.0 |
259.40 |
2.0 |
2.70 |
-501.39 |
| PCV1-407 |
38.0 |
-700.0 |
363.10 |
2.0 |
2.50 |
-701.31 |
| PCV1-408 |
40.0 |
-50.0 |
25.94 |
2.0 |
11.42 |
-51.33 |
| PCV1-501 |
50.0 |
-75.0 |
38.90 |
2.0 |
12.10 |
-76.97 |
| PCV1-502 |
50.0 |
-100.0 |
51.88 |
3.0 |
9.42 |
-101.99 |
| PCV1-503 |
50.0 |
-150.0 |
77.80 |
3.0 |
7.13 |
-151.96 |
| PCV1-504 |
50.0 |
-200.0 |
103.75 |
3.0 |
6.06 |
-201.99 |
| PCV1-505 |
50.0 |
-250.0 |
129.72 |
3.0 |
5.43 |
-252.05 |
| PCV1-506 |
50.0 |
-400.0 |
207.00 |
3.0 |
4.52 |
-401.03 |
| PCV1-507 |
50.0 |
-500.0 |
259.40 |
3.0 |
4.21 |
-502.05 |
| PCV1-508 |
50.0 |
-600.0 |
311.20 |
3.0 |
4.01 |
-601.91 |
| PCV1-509 |
50.0 |
-800.0 |
415.00 |
3.0 |
3.75 |
-802.02 |
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