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.

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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

L-AOC031

19.0000

90.0000

86.9500

5.5

4.4000

L-AOC032

6.3000

29.0000

25.3500

6.4000

6.0000

L-AOC033

6.4000

39.1000

37.4000

3.1

2.8000

L-AOC034

19.0000

148.0000

145.7400

4.6

4.0000

L-AOC035

7.0000

10.0000

7.2700

4.9

3.3000

L-AOC036

7.0000

25.0000

23.8400

2.4000

1.8000

L-AOC037

24.0000

120.0000

117.0900

5.5

4.4000

L-AOC038

25.0000

50.0000

44.6200

10.5

6.6000

L-AOC039

26.5000

100.0000

96.5500

6.8

4.9000

L-AOC040

31.5000

80.0000

75.2600

9.5

6.1000

L-AOC041

31.5000

160.0000

156.0900

6.95

5.1000

L-AOC042

7.5000

15.0000

12.9100

3.9000

3.0000

L-AOC043

31.5000

200.0000

196.4100

8.1

7.0000

L-AOC044

31.5000

250.0000

246.4900

7.22

6.2000

L-AOC045

40.0000

120.0000

114.2800

11.2

7.6000

L-AOC047

40.0000

180.0000

175.4200

9.6

7.3000

L-AOC048

8.0000

18.9000

17.0600

3.4

2.6000

L-AOC049

8.0000

32.4000

30.6700

3.6000

3.0000

L-AOC050

80.0000

1185.0000

1177.6400

11.8

10.4000

L-AOC051

40.0000

200.0000

195.2300

10.6

8.7000

L-AOC052

42.0000

285.0000

278.3100

11.8

10.3000

L-AOC053

8.5000

20.7000

17.7400

4.3

3.4000

L-AOC054

8.8000

24.4000

22.2300

4.8000

3.8000

L-AOC055

9.0000

18.0000

14.9100

5.47

4.5000

L-AOC056

50.0000

300.0000

293.2500

14.65

12.5000

L-AOC057

9.0000

27.0000

24.2200

5.19

4.3000

L-AOC058

9.3000

29.0000

27.6400

3.0000

2.1000

L-AOC060

9.4000

25.8000

23.7100

4.5

3.5000

L-AOC061

10.0000

25.0000

21.7700

6.1

4.9000