Achromatic lenses are lenses consisting of two or more elements, which are usually made of crown and flint glass with differing indices of refraction. One element is positive, the other is negative. Distinct wavelengths can be corrected for chromatic aberration.
Achromatic lenses are nearly free from aspherical aberration and coma. Comparing with singlet lenses, achromatic lenses have far superior optical performance.
Bond with glue NOA61 (produced by Norland)
The glue can withstand temperatures from -150℃ to 125℃.
Refractive Index of Cured Polymer is 1.56, and transparence from 0.34μm to 2.0μm.
Please go to Norland website for more information of the glue.
Specifications
Material:
See tables
Diameter tolerance:
+/-0.1mm
Design wavelength:
546.1nm
Focal tolerance:
+/-2%
Surface quality :
60-40 S/D
Centration:
3 arcmin
Surtace flatness:
λ/4 @633nm
Clear aperture:
90%
Bevel:
Protective bevel
Item#
Φ(mm)
F(mm)
Material-A
Material-B
R1(mm)
R2/R3(mm)
R4(mm)
Tc(mm)
Fb(mm)
LAO-6-10
6.0
10.0
SK9
SF15
6.55
-4.05
-23.23
3.6+0.8
7.54
LAO-6-15
6.0
15.0
BK7
SF5
8.83
-6.54
-19.77
2.71+1.0
13.06
LAO-6-20
6.0
20.0
BK7
SF5
12.36
-8.51
-24.38
2.6+1.0
18.29
LAO-6-25
6.0
25.0
BK7
SF5
15.70
-10.66
-29.99
2.3+1.0
23.45
LAO-6-30
6.0
30.0
BK7
SF5
18.88
-12.94
-34.68
1.9+1.0
28.69
LAO-8-25
8.0
25.0
BK7
SF5
15.60
-10.81
-30.48
2.9+1.0
23.12
LAO-8-30
8.0
30.0
BK7
SF5
18.88
-12.88
-36.22
2.7+1.0
28.27
LAO-12-25
12.7
25.0
BK7
SF5
15.60
-11.40
-31.05
4.3+1.3
22.25
LAO-12-30
12.7
30.0
BK7
SF5
18.53
-13.49
-37.84
4.0+1.3
27.36
LAO-12-40
12.7
40.0
BK7
SF5
25.23
-17.54
-48.75
3.4+1.3
37.77
LAO-12-50
12.7
50.0
BK7
SF5
31.26
-21.93
-62.37
3.1+1.3
47.99
LAO-12-75
12.7
75.0
BK7
SF5
46.77
-32.96
-94.62
2.6+1.3
73.23
LAO-18-40
18.0
40.0
BK7
SF5
24.27
-18.35
-53.09
5.4+1.5
36.51
LAO-18-50
18.0
50.0
BK7
SF5
31.69
-22.00
-60.57
4.8+1.5
46.98
LAO-18-60
18.0
60.0
BK7
SF5
37.84
-26.49
-73.79
4.1+1.5
57.30
LAO-18-80
18.0
80.0
BK7
SF5
49.55
-36.81
-165.58
3.4+1.5
77.41
LAO-25-50
25.4
50.0
BaF53
SF4
34.59
-24.21
-179.06
7.8+2.0
44.52
LAO-25-60
25.4
60
BK7
SK5
37.33
-27.16
-75.86
7.0+2.0
55.56
LAO-25-80
25.4
80
K7
SF1
49.09
-37.93
-95.94
5.5+2.0
76.46
LAO-25-100
25.4
100.0
BK3
SF5
60.67
-44.67
-122.18
4.5+2.0
97.05
LAO-25-120
25.4
120.0
BK7
SF5
73.28
-54.33
-159.96
4.2+2.0
117.10
LAO-30-100
30.0
100.0
BK3
SF5
59.02
-45.29
-127.64
6.8+2.5
95.26
LAO-30-140
30.0
140.0
BK3
SF5
84.92
-62.23
170.61
.9+2.54
136.60
Choose Anti-reflective Coatings
● Single layer MgF2 ● Multiple layers AR coating
R<0.25% @ Laser line (view the curve)
R<0.5% @ Broadband Wavelength (view the curve)
