Objective Name

Numerical aperture(N.A)

Working distance(mm)

Focus
Length(mm)

Resolution（μm)

Depth of
Field (μm)

Optical System

Parfocalization distance(mm)

Brightfield fluorites 2.5X

0.08

9.8

72

4.19

42.97

Infinite correction

45

Brightfield fluorites 5X

0.15

14.8

36

1.8

12.27

Infinite correction

45

Brightfield fluorites 10X

0.3

8.5

18

0.9

3.06

Infinite correction

45

Brightfield fluorites 20X

0.4

11.9

9

0.68

1.72

Infinite correction

45

Brightfield fluorites 20X

0.45

3

9

0.65

1.68

Infinite correction

45

Brightfield fluorites 50X

0.75

3

3.6

0.4

0.7

Infinite correction

45

Brightfield fluorites 100X

0.9

1

1.8

0.3

0.4

Infinite correction

45

Brightfield and darkfield fluorites 5X

0.15

14.8

36

1.8

12.27

Infinite correction

45

Brightfield and darkfield fluorites 10X

0.3

8.5

18

0.9

3.06

Infinite correction

45

Brightfield and darkfield  fluorites 20X

0.4

10.8

9

0.68

1.72

Infinite correction

45

Brightfield and darkfield  fluorites 20X

0.45

3

9

0.65

1.68

Infinite correction

45

Brightfield and darkfield  fluorites 50X

0.75

3

3.6

0.4

0.7

Infinite correction

45

Brightfield and darkfield fluorites 100X

0.9

1

1.8

0.3

0.4

Infinite correction

45