Objective Name

Numerical aperture(N.A)

Working distance(mm)

Focus
Length(mm)

Resolution（μm)

Depth of
Field (μm)

Thread

Optical System

Parfocalization distance(mm)

Brightfield fluorites 2.5X

0.08

9.8

72

4.19

42.97

M26X0.706

Infinite correction

45

Brightfield fluorites 5X

0.15

14.8

36

1.8

12.27

M26X0.706

Infinite correction

45

Brightfield fluorites 10X

0.3

8.5

18

0.9

3.06

M26X0.706

Infinite correction

45

Brightfield fluorites 20X

0.4

11.9

9

0.68

1.72

M26X0.706

Infinite correction

45

Brightfield fluorites 20X

0.45

3

9

0.65

1.68

M26X0.706

Infinite correction

45

Brightfield fluorites 50X

0.75

3

3.6

0.4

0.7

M26X0.706

Infinite correction

45

Brightfield fluorites 100X

0.9

1

1.8

0.3

0.4

M26X0.706

Infinite correction

45

Brightfield and darkfield fluorites 5X

0.15

14.8

36

1.8

12.27

M26X0.706

Infinite correction

45

Brightfield and darkfield fluorites 10X

0.3

8.5

18

0.9

3.06

M26X0.706

Infinite correction

45

Brightfield and darkfield  fluorites 20X

0.4

10.8

9

0.68

1.72

M26X0.706

Infinite correction

45

Brightfield and darkfield  fluorites 20X

0.45

3

9

0.65

1.68

M26X0.706

Infinite correction

45

Brightfield and darkfield  fluorites 50X

0.75

3

3.6

0.4

0.7

M26X0.706

Infinite correction

45

Brightfield and darkfield fluorites 100X

0.9

1

1.8

0.3

0.4

M26X0.706

Infinite correction

45