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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 121 to 150 (310 Total)
Sort by:
Part Number
Diameter
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-AOC130
19.0000
56.0000
52.9500
5.94
4.2000
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L-AOC131
19.0000
60.0000
56.9600
6.3
4.5000
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L-AOC132
15.2000
38.5000
35.8300
5.5000
3.7000
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L-AOC133
100.0000
500.0000
487.6600
26.1
20.1000
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L-AOC134
19.0000
190.0000
188.2300
6
5.4000
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L-AOC135
20.0000
30.0000
24.7100
10.16
7.2000
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L-AOC136
20.0000
40.0000
34.4000
10
7.8000
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L-AOC137
20.0000
45.0000
40.6000
8.1
6.1000
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L-AOC138
20.0000
50.2000
45.9700
8.1
5.7000
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L-AOC139
30.0000
60.0000
53.5700
12.46
8.4000
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L-AOC140
20.0000
55.0000
51.5700
7.1000
4.9000
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L-AOC141
20.0000
60.2000
56.4900
7.4
5.4000
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L-AOC143
20.0000
70.1000
66.5800
6.9
5.2000
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L-AOC144
31.5000
300.0000
295.7100
9.4
8.6000
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L-AOC145
20.0000
99.5000
96.2800
6.1
4.9000
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L-AOC146
20.0000
120.3000
117.0800
5.7000
4.7000
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L-AOC147
20.0000
149.8000
146.7500
5.4
4.6000
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L-AOC148
20.0000
170.0000
166.8700
5.3
4.6000
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L-AOC149
20.0000
200.0000
197.3500
8.1
7.6000
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L-AOC150
20.0000
250.0000
247.0600
4.2
3.7000
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L-AOC151
20.0000
300.0000
296.5900
4.7
4.3000
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L-AOC152
20.6000
61.8000
57.4900
8.1000
6.0000
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L-AOC153
20.6000
128.0000
125.6800
8.5
7.5000
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L-AOC154
22.0000
71.0000
67.6200
6.8
4.7000
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L-AOC155
23.0000
61.0000
56.7200
8.6
6.0000
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L-AOC156
100.0000
400.0000
388.9900
22
14.5000
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L-AOC157
23.0000
79.9000
75.4900
8.5000
6.7000
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L-AOC158
25.0000
30.0000
22.2300
14.04
9.3000
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L-AOC159
25.0000
35.0000
27.5200
13.5
9.5000
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L-AOC160
25.0000
40.0000
33.3700
12
8.5000
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