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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 61 to 90 (310 Total)
Sort by:
Part Number
Diameter
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-AOC062
10.0000
38.0000
36.1400
3.8000
3.0000
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L-AOC063
10.0000
40.0000
37.4800
5.3
4.6000
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L-AOC064
10.0000
50.0000
47.3700
5
4.4000
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L-AOC065
10.0000
55.0000
52.5500
3.8000
3.3000
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L-AOC066
10.0000
60.1000
57.4700
4.9
4.4000
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L-AOC067
10.0000
69.9000
67.2200
4.7000
4.3000
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L-AOC068
10.0000
80.1000
77.6200
4.6000
4.2000
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L-AOC069
12.0000
181.0000
179.3800
3.7
3.5000
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L-AOC070
12.0000
89.7000
86.5800
5.8
5.3000
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L-AOC073
12.3000
30.8000
27.1700
6.7
5.2000
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L-AOC074
12.5000
14.0100
9.9200
7.7300
5.3000
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L-AOC075
12.5000
20.0000
16.5600
6.35
4.6000
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L-AOC076
12.5000
24.0000
21.1900
5
3.0000
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L-AOC077
12.5000
25.0000
21.5000
6.25
4.9000
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L-AOC078
12.5000
35.0000
32.4200
5.18
4.0000
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L-AOC079
12.5000
40.0000
37.5600
5.06
3.9000
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L-AOC080
12.5000
45.0000
42.5200
5.0000
3.9000
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L-AOC081
12.5000
50.0000
47.6200
5
4.1000
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L-AOC082
12.5000
60.0000
57.5800
5
4.2000
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L-AOC083
12.5000
75.0000
72.3700
4.6
4.0000
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L-AOC084
12.7000
50.0000
47.9100
4.4
3.4000
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L-AOC085
12.7000
60.0000
58.0200
3.7
2.9000
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L-AOC086
12.7000
60.3000
58.4300
4.1000
3.3000
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L-AOC087
13.0000
40.5000
38.1500
4.63
3.5000
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L-AOC088
13.0000
51.0000
48.9400
4.3000
3.3000
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L-AOC089
13.5000
50.0000
47.1900
6.0000
4.9000
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L-AOC090
15.0000
25.0000
20.9800
8.03
6.1000
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L-AOC091
130.0000
635.0000
621.4800
27.7
19.7000
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L-AOC092
15.0000
30.1000
25.9500
8
5.7000
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L-AOC093
15.0000
40.0000
35.6300
7.58
6.4000
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