平凹透鏡

 

Plano-concave Lenses present a concave surface and a plano surface. They have a negative focal length and are used for image reductinon or to spread light. These lenses diverge collimated incident light and form virtual images which are seen through the lens. They are often used to expand light or to increase focal lengths in existing systems.

Specifications:
Material:----------------------------------------------N-BK7, Fused Silica, N-SF10, Silicon, Ge,CaF2, etc.
Diameter Tolerance:----------------------------+0.0/-0.15mm
Focal Length Tolerance (mm):---------------+/-2%
Centration:-----------------------------------------<3 arc minutes
Clear Aperture:------------------------------------>85%
Surface Figure (per [email protected])----<1.5λ
IRR ( @632.8nm)---------------------------------<λ/4
Surface Quality:------------------------------------60/40
Protected Bevel:-----------------------------------<0.25mmx45deg
Coating:---------------------------------------------uncoated, AR, HR, PR Coating, etc.

N-BK7 Plano Concave Lens

Design wavelength: 546.1nm Design Index:1.5183 ± 0.0005

Part No.
f (mm)
dia (mm)
R1 (mm)
tc (mm)
te (mm)
fb (mm)
Illustration
PCV1201
-15.0
12.7
7.78
2.0
5.3
-16.3
 
PCV1202
-20.0
12.7
10.37
2.0
4.1
-21.3
PCV1203
-25.0
12.7
12.96
2.0
3.7
-26.3
PCV1204
-30.0
12.7
15.55
2.0
3.4
-31.3
PCV1205
-40.0
12.7
20.73
2.0
3.0
-41.3
PCV1206
-50.0
12.7
25.92
2.0
2.8
-51.3
PCV1301
-25.0
25.4
12.97
2.0
10.9
-26.3
PCV1302
-35.0
25.4
18.14
2.0
7.2
-36.3
PCV1303
-50.0
25.4
25.92
2.0
5.3
-51.3
PCV1305
-75.0
25.4
38.87
2.0
4.1
-76.3
PCV1306
-100.0
25.4
51.83
2.0
3.6
-101.3
PCV1307
-150.0
25.4
77.75
2.0
3.0
-151.3
PCV1308
-200.0
25.4
103.66
2.0
2.7
-201.3

Plano Concave Lens - Fused Silica

Design wavelength: 546.1nm Design Index:1.46008

Part No.
F(mm)
f(mm)
R(mm)
Tc
Te
Fb
Illustration
PCV2101
12.7
-15.0
6.92
2.0
6.17
-16.41
PCV2102
12.7
-20.0
9.20
2.0
4.54
-21.38
PCV2103
12.7
-25.0
11.51
2.0
3.91
-26.38
PCV2104
12.7
-30.0
13.80
2.0
3.55
-31.37
PCV2105
12.7
-40.0
18.41
2.0
3.13
-41.38
PCV2201
25.4
-35.0
16.11
2.0
8.20
-36.36
PCV2202
25.4
-50.0
23.01
2.0
5.82
-51.38
PCV2203
25.4
-75.0
34.51
2.0
4.42
-76.38
PCV2204
25.4
-100.0
46.03
2.0
3.79
-101.42
PCV2205
25.4
-150.0
69.02
2.0
3.18
-151.39
PCV2206
25.4
-175.0
80.54
2.0
3.01
-176.43
PCV2207
25.4
-200.0
92.04
2.0
2.88
-201.42
PCV2208
25.4
-250.0
115.08
2.0
2.70
-251.50
PCV2209
25.4
-300.0
138.04
2.0
2.59
-301.41
PCV2210
25.4
-500.0
230.10
2.0
2.35
-501.50
PCV2211
25.4
-1000.0
460.10
2.0
2.18
-1001.42
PCV2401
38.0
-50.0
23.01
3.0
13.03
-52.07
PCV2402
38.0
-100.0
46.03
3.0
7.10
-102.10
PCV2403
38.0
-150.0
69.02
3.0
5.67
-152.07
PCV2404
38.0
-200.0
92.04
3.0
4.98
-202.11
PCV2405
38.0
-350.0
161.06
3.0
4.13
-352.13
PCV2406
38.0
-500.0
230.10
3.0
3.79
-502.19

 

Note: Other sizes, material are available upon request.
The ones with Silicon, Ge,CaF2 material pls kindly refer to IR OPTICS section.


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