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Standard Achromats

These lenses consist of two optical elements, usually of crown and flint glass types, cemented together to form an achromatic doublet. Most often, the crown lens is a biconvex positive lens. Due to the difference in refractive indices, chromatic aberration with respect to two selected wavelengths has been corrected. The lenses have been corrected for on-axis spherical aberration as well. Achromatic doublets are used as telescope objectives, eye loupes, magnifying glasses and eyepieces. Achromatic doublets have also been used to focus and manipulate laser beams because their image quality is superior to single lenses.

Diameter Dia. Tolerance CT Tolerance Centering Irregularity Surface Quality Bevel
6.00-25.00 +0.00 / -0.10 ±0.2 < 3 minutes 0.5 Waves 40-20 0.25 x 45°
25.01 - 50.00 +0.00 / -0.10 ±0.2 < 3 minutes 0.5 Waves 60-40 0.50 x 45°
>50.00 +0.05 / -0.10 ±0.2 3 - 5 arc min. 1.0 Waves 60-40 0.50 x 45°
Dimensions MM
Clear Aperture CA >= 90% of Diameter
Coating 1/4wave MgF2 @ 550nm (See Coating Chart for Available Options)
Design Wavelength 587.6nm
Focal Length Tolerance ±2%
Edge Thickness Reference
* All dimensions are in mm

Viewing 91 to 120 (310 Total)
Sort by:
Part Number
Diameter
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-AOC094
15.0000
40.1000
36.4700
6.9000
5.2000
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L-AOC095
15.0000
50.0000
46.2400
6.5
5.1000
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L-AOC096
15.0000
50.1000
47.0300
6.3000
5.0000
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L-AOC097
15.0000
59.9000
56.9200
5.9
4.8000
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L-AOC098
15.0000
70.2000
67.2800
5.7
4.7000
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L-AOC099
15.0000
75.0000
70.7800
7.5
6.6000
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L-AOC100
7.0000
12.0000
9.4100
4.7
3.3000
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L-AOC101
15.0000
79.9000
77.0200
5.5
4.7000
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L-AOC103
15.5000
42.0000
38.9200
6.5000
4.8000
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L-AOC106
22.1000
61.1600
56.7600
7.87
6.0000
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L-AOC107
22.1000
85.7500
80.1900
10.92
9.6000
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L-AOC108
28.9000
64.1600
59.0200
10.2900
6.6000
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L-AOC109
28.8500
85.7500
79.9000
10.92
8.6000
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L-AOC111
15.0000
100.0000
97.0800
5.2
4.5000
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L-AOC113
33.0000
86.0000
79.7900
10.92
7.9000
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L-AOC114
33.0200
107.0600
101.1800
11.46
8.9000
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L-AOC115
33.0200
163.5800
156.7400
12.8000
11.2000
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L-AOC117
38.1000
107.0000
101.1800
11.4600
8.0000
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L-AOC118
38.1000
163.5800
156.7400
12.8
10.6000
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L-AOC119
43.0500
648.5100
637.7100
14.0000
12.5000
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L-AOC120
47.0400
750.3200
739.8800
14.0000
12.4000
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L-AOC121
16.0000
48.0000
44.4000
5.2
4.0000
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L-AOC122
17.0000
35.0000
31.4100
6.6
4.7000
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L-AOC123
17.0000
80.8000
78.8600
4.1
3.0000
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L-AOC124
17.0000
90.0000
84.6100
8
7.1000
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L-AOC125
110.0000
240.0000
220.7800
34.9
23.5000
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L-AOC126
17.9000
105.0000
102.5600
5.3
4.4000
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L-AOC127
18.0000
75.0000
71.8600
6.3
5.0000
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L-AOC128
18.2000
78.1000
74.9600
6.3000
5.0000
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L-AOC129
18.5000
31.0000
25.5700
9.8
7.2000
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