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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 301 to 310 (310 Total)
Sort by:
Part Number
Diameter
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-AOC354
9.0000
12.0000
8.3300
7
5.4000
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L-AOC511
14.0000
21.0000
16.6200
8.09
5.8000
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L-AOC512
14.0000
44.0000
41.0400
5.2
4.2000
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L-AOC538
25.0000
65.0000
60.8600
8
5.1000
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L-AOC539
30.0000
140.0000
136.0400
9.03
7.1000
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L-AOC609
150.0000
2000.0000
1988.2700
23.27
20.3000
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L-AOC646
150.0000
1000.0000
987.8400
24.63
18.7000
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L-AOC659
150.0000
3000.0000
2989.5800
23.51
21.6000
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L-AOC838
25.0000
90.0000
86.8900
6.5
4.4000
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L-AOC938
25.4000
100.8000
96.5000
7.2000
5.3000
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