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-AOC062

10.0000

38.0000

36.1400

3.8000

3.0000

L-AOC063

10.0000

40.0000

37.4800

5.3

4.6000

L-AOC064

10.0000

50.0000

47.3700

5

4.4000

L-AOC065

10.0000

55.0000

52.5500

3.8000

3.3000

L-AOC066

10.0000

60.1000

57.4700

4.9

4.4000

L-AOC067

10.0000

69.9000

67.2200

4.7000

4.3000

L-AOC068

10.0000

80.1000

77.6200

4.6000

4.2000

L-AOC069

12.0000

181.0000

179.3800

3.7

3.5000

L-AOC070

12.0000

89.7000

86.5800

5.8

5.3000

L-AOC073

12.3000

30.8000

27.1700

6.7

5.2000

L-AOC074

12.5000

14.0100

9.9200

7.7300

5.3000

L-AOC075

12.5000

20.0000

16.5600

6.35

4.6000

L-AOC076

12.5000

24.0000

21.1900

5

3.0000

L-AOC077

12.5000

25.0000

21.5000

6.25

4.9000

L-AOC078

12.5000

35.0000

32.4200

5.18

4.0000

L-AOC079

12.5000

40.0000

37.5600

5.06

3.9000

L-AOC080

12.5000

45.0000

42.5200

5.0000

3.9000

L-AOC081

12.5000

50.0000

47.6200

5

4.1000

L-AOC082

12.5000

60.0000

57.5800

5

4.2000

L-AOC083

12.5000

75.0000

72.3700

4.6

4.0000

L-AOC084

12.7000

50.0000

47.9100

4.4

3.4000

L-AOC085

12.7000

60.0000

58.0200

3.7

2.9000

L-AOC086

12.7000

60.3000

58.4300

4.1000

3.3000

L-AOC087

13.0000

40.5000

38.1500

4.63

3.5000

L-AOC088

13.0000

51.0000

48.9400

4.3000

3.3000

L-AOC089

13.5000

50.0000

47.1900

6.0000

4.9000

L-AOC090

15.0000

25.0000

20.9800

8.03

6.1000

L-AOC091

130.0000

635.0000

621.4800

27.7

19.7000

L-AOC092

15.0000

30.1000

25.9500

8

5.7000

L-AOC093

15.0000

40.0000

35.6300

7.58

6.4000