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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 31 to 60 (310 Total)
Sort by:
Part Number
Diameter
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-AOC030
6.2500
40.0000
38.4700
3.3
3.0000
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L-AOC031
19.0000
90.0000
86.9500
5.5
4.4000
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L-AOC032
6.3000
29.0000
25.3500
6.4000
6.0000
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L-AOC033
6.4000
39.1000
37.4000
3.1
2.8000
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L-AOC034
19.0000
148.0000
145.7400
4.6
4.0000
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L-AOC035
7.0000
10.0000
7.2700
4.9
3.3000
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L-AOC036
7.0000
25.0000
23.8400
2.4000
1.8000
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L-AOC037
24.0000
120.0000
117.0900
5.5
4.4000
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L-AOC038
25.0000
50.0000
44.6200
10.5
6.6000
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L-AOC039
26.5000
100.0000
96.5500
6.8
4.9000
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L-AOC040
31.5000
80.0000
75.2600
9.5
6.1000
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L-AOC041
31.5000
160.0000
156.0900
6.95
5.1000
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L-AOC042
7.5000
15.0000
12.9100
3.9000
3.0000
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L-AOC043
31.5000
200.0000
196.4100
8.1
7.0000
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L-AOC044
31.5000
250.0000
246.4900
7.22
6.2000
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L-AOC045
40.0000
120.0000
114.2800
11.2
7.6000
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L-AOC047
40.0000
180.0000
175.4200
9.6
7.3000
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L-AOC048
8.0000
18.9000
17.0600
3.4
2.6000
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L-AOC049
8.0000
32.4000
30.6700
3.6000
3.0000
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L-AOC050
80.0000
1185.0000
1177.6400
11.8
10.4000
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L-AOC051
40.0000
200.0000
195.2300
10.6
8.7000
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L-AOC052
42.0000
285.0000
278.3100
11.8
10.3000
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L-AOC053
8.5000
20.7000
17.7400
4.3
3.4000
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L-AOC054
8.8000
24.4000
22.2300
4.8000
3.8000
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L-AOC055
9.0000
18.0000
14.9100
5.47
4.5000
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L-AOC056
50.0000
300.0000
293.2500
14.65
12.5000
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L-AOC057
9.0000
27.0000
24.2200
5.19
4.3000
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L-AOC058
9.3000
29.0000
27.6400
3.0000
2.1000
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L-AOC060
9.4000
25.8000
23.7100
4.5
3.5000
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L-AOC061
10.0000
25.0000
21.7700
6.1
4.9000
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