The double convex lens is symmetrical across both its horizontal and vertical axis. Each of the lens' two faces can be thought of as originally being part of a sphere. The fact that a double convex lens is thicker across its middle is an indicator that it will converge rays of light that travel parallel to its principal axis. A double convex lens is a converging lens. A double concave lens is also symmetrical across both its horizontal and vertical axis. The two faces of a double concave lens can be thought of as originally being part of a sphere. The fact that a double concave lens is thinner across its middle is an indicator that it will diverge rays of light that travel parallel to its principal axis. A double concave lens is a diverging lens. These two types of lenses - a double convex and a double concave lens will be the only types of lenses that will be discussed in this unit of The Physics Classroom Tutorial.
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Description Of Double Convex Lens
The fact that a double concave lens is thinner across its middle is an indicator that it will diverge rays of light that travel parallel to its principal axis. A double concave lens is a diverging lens. These two types of lenses - a double convex and a double concave lens will be the only types of lenses that will be discussed in this unit of The Physics Classroom Tutorial.
Specifications Of Two Convex Lenses
|
Material
|
Optical glass/ Fused silica/ sapphire etc.
|
|
Diameter
|
2mm~300mm
|
|
Diameter tolerance
|
±0.05mm(≤50mm)
|
|
±0.1mm(＞50mm)
|
|
Focal length
|
50mm~2000mm
|
|
Focal length tolerance
|
±0.2%（＜10mm）
|
|
±0.5%（＜10mm-1000mm）
|
|
±1%（＜＞1000mm）
|
|
Center Thickness
|
2mm~20mm
|
|
Surface quality
|
60/40， 40/20， 20/10
|
|
Surface accuracy
|
λ/2~λ/10@632.8nm，532nm
|
|
Clear Aperture
|
>85% dig diameter
|
|
Centration
|
<3arc min~ 30arc sec
|
|
Coating
|
As per customer’s request
|
|
Material
|
Diameter
(mm)
|
Surface Radius 1
(mm)
|
Surface Radius 2
(mm)
|
Center Thickness
(mm)
|
Focal Length
(mm)
|
|
H-ZF7LA
|
5.4
|
12.19
|
3.4
|
2.63
|
3.5
|
|
ZF14
|
10
|
11.324
|
8.083
|
3.37
|
5.6
|
|
H-ZLAF68B
|
8
|
6.11
|
104.23
|
2.2
|
6.7
|
|
H-ZF7LA
|
10
|
10.49
|
10.49
|
3.5
|
7
|
|
ZF11
|
9
|
11.5
|
7.5
|
9.6
|
8
|
|
H-K9L
|
14
|
32.15
|
13.397
|
4.7
|
9
|
|
H-K9L
|
10
|
9.817
|
9.817
|
4.6
|
10.3
|
|
H-ZF62
|
14
|
28.64
|
12.972
|
6
|
10.4
|
|
H-LAK53A
|
11
|
27.589
|
10.5
|
3.1
|
10.4
|
|
JGS1
|
9.5
|
9.09
|
9.09
|
3.5
|
10.5
|
|
H-LAF3
|
14
|
10.56
|
30.62
|
5
|
11.1
|
|
H-K9L
|
11
|
11.695
|
11.695
|
4
|
12
|
|
H-K9L
|
12.5
|
12.1
|
12.1
|
4.5
|
12.5
|
|
ZF6
|
12
|
591.82
|
9.62
|
4
|
12.6
|
|
H-K9L
|
6.8
|
13.183
|
13.183
|
2
|
13.11
|
|
JGS1
|
11
|
7.34
|
26.52
|
6
|
13.5
|
|
H-LAK1
|
10
|
19.724
|
15.346
|
3.5
|
13.6
|
|
H-LAK3
|
14
|
28.31
|
14.997
|
5.5
|
13.8
|
|
ZF1
|
12
|
17.014
|
17.014
|
4.5
|
13.8
|
|
H-ZBAF21
|
8
|
12.039
|
55.72
|
2.32
|
13.9
|
|
H-LAK7
|
9
|
19
|
19
|
4
|
13.9
|
|
H-QF50
|
16.6
|
17.76
|
13.315
|
5.53
|
13.9
|
|
H-ZBAF21
|
8
|
12.039
|
55.72
|
2.32
|
13.9
|
|
ZK3
|
11.7
|
38.965
|
10.284
|
33
|
14.16
|
|
H-K51
|
12.5
|
14.011
|
14.011
|
4.6
|
14.2
|
|
H-K9L
|
12
|
36.526
|
9.005
|
4.5
|
14.5
|
|
H-K9L
|
10
|
64
|
9.29
|
3
|
15
|
|
H-ZK2
|
13
|
11.06
|
42.875
|
5
|
15.6
|
|
H-ZK3
|
14
|
31.35
|
12.702
|
3.9
|
15.86
|
|
H-LAK7
|
11
|
13
|
77
|
4
|
15.9
|
|
H-ZBAF21
|
15
|
28.81
|
19.099
|
3.68
|
16.4
|
|
JGS1
|
11
|
73.3
|
9.067
|
5
|
16.5
|
|
H-ZK11
|
15
|
22.92
|
21.15
|
3.73
|
17
|
|
H-ZK9A
|
12
|
49.493
|
13.381
|
2.5
|
17.2
|
|
ZK3
|
14.2
|
12.702
|
48
|
3.7
|
17.44
|
|
ZK3
|
14.8
|
13.381
|
40.8
|
4
|
17.59
|
|
H-ZK11
|
15
|
22.92
|
21.15
|
3.73
|
17.8
|
|
H-K9L
|
19.8
|
22.887
|
13.765
|
7.7
|
17.9
|
|
ZK9
|
16.5
|
34.28
|
15.704
|
4.5
|
17.98
|
|
ZK3
|
14.8
|
17.3
|
25.638
|
3.8
|
18.13
|
|
H-LAK3
|
22
|
16.144
|
92.68
|
6.5
|
18.8
|
|
H-ZK9A
|
11
|
18.11
|
31.47
|
3.1
|
18.9
|
|
H-K9L
|
15.5
|
26.12
|
15.136
|
4.5
|
19.28
|
|
ZF6
|
12
|
19.04
|
57.53
|
3
|
19.3
|
|
H-ZK9A
|
16
|
14.369
|
67.975
|
4
|
19.48
|
|
BaK8
|
13.5
|
70.63
|
13.062
|
3.6
|
19.55
|
|
JGS1
|
13.417
|
15.812
|
19.59
|
4.3
|
19.8
|
|
H-F4
|
32
|
69.2
|
20.83
|
12.5
|
20
|
|
H-ZK10L
|
15
|
17.192
|
43.96
|
4.69
|
20.5
|
|
H-ZK10L
|
14
|
17.912
|
43.96
|
4.96
|
20.5
|
|
ZK9
|
16.5
|
76.91
|
15.241
|
4
|
20.85
|
|
H-ZK6
|
16
|
46.88
|
16.827
|
4
|
20.9
|
|
H-LAF3B
|
16
|
21.59
|
54.45
|
3.5
|
21.1
|
|
H-K9L
|
14.6
|
23.01
|
19.59
|
4.6
|
21.2
|
|
H-ZK3
|
18
|
53.85
|
16.385
|
4.5
|
21.84
|
|
H-K9L
|
12.6
|
22.28
|
22.28
|
2.5
|
22
|
|
H-ZLAF68B
|
20
|
38.55
|
38.55
|
5
|
22.5
|
|
H-ZK10
|
20
|
15.62
|
145.273
|
7
|
23
|
|
QK3
|
10
|
45.16
|
15
|
2.36
|
23.27
|
|
H-ZK9
|
21.5
|
41.84
|
21.6
|
5.5
|
23.75
|
|
H-F4
|
20.6
|
16.482
|
131.2071
|
4.91
|
23.9
|
|
N-LAK12
|
15
|
42.87
|
25.66
|
4
|
24.2
|
|
N-ZK9
|
21.5
|
70.18
|
18.65
|
5.5
|
24.33
|
|
H-ZLAF50B
|
18
|
33.525
|
46.6
|
3.3
|
24.7
|
|
H-K9L
|
12.7
|
25.28
|
25.28
|
3.52
|
25
|
|
H-LAK3
|
20
|
36.81
|
36.81
|
4
|
25.2
|
|
H-K9L
|
13
|
50
|
17.498
|
3
|
25.5
|
|
H-ZK50
|
17.8
|
34.848
|
26.993
|
5
|
25.8
|
|
BAK2
|
25
|
32.884
|
23.621
|
7.8
|
26.8
|
|
ZK9
|
21
|
41.8
|
26.4
|
5.5
|
26.91
|
|
H-LAK53A
|
16
|
29.404
|
63.187
|
3
|
27
|
|
H-LAF53
|
18.5
|
62.95
|
29.17
|
3.7
|
27
|
|
ZK9
|
22.5
|
20
|
100
|
5.5
|
27.35
|
|
H-ZK3
|
15.2
|
19.01
|
100
|
3
|
27.37
|
|
H-LAK51
|
13
|
37.76
|
37.76
|
2.8
|
27.5
|
|
ZBaF3
|
25.5
|
100
|
21.68
|
6.3
|
27.69
|
|
H-FK61
|
30
|
17.97
|
69.2
|
12
|
28
|
|
H-LAF3B
|
18.6
|
27.616
|
75.01
|
7.7
|
28
|
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