Optical system

1. An optical system for imaging of an object on an image acquisition unit, comprising:

a first lens unit;

a second lens unit;

a third lens unit;

a fourth lens unit;

a fifth lens unit; and

a sixth lens unit, wherein all of the lens units are disposed from the object in a direction of the image acquisition unit with no intervening lens units,

wherein the first lens unit includes a converging lens,

wherein the second lens unit includes a converging lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F >0.025,

wherein the third lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.0015,

wherein the fourth lens unit includes a converging lens, and

wherein the fifth lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.005.

2. The optical system as recited in claim 1 , wherein the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit, and the sixth lens unit each have precisely one lens.

3. The optical system as recited in claim 1 , wherein the sixth lens unit is displace-able along an optical axis of the objective.

4. The optical system as recited in claim 1 , wherein the sixth lens unit includes a dispersive lens.

5. The optical system as recited in claim 1 , wherein the fourth lens unit and the fifth lens unit form a dispersive element.

6. An objective for imaging of an object on an image acquisition unit, comprising:

a first lens unit;

a second lens unit;

a third lens unit;

a fourth lens unit;

a fifth lens unit; and

a sixth lens unit, wherein all of the lens units are disposed from the object in a direction of the image acquisition unit,

wherein the first lens unit includes a converging lens,

wherein the second lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F >0.025,

wherein the third lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.0015,

wherein the fifth lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.005, and

wherein the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit, and the sixth lens unit have the following properties, the properties being standardized to the objective having a focal length of f=100 mm:

Distances

Face

Radii

[mm]

n e

ν e

Δθ g F

Glass

First face

44.524

3.461

1.48915

70.0

0.0022

S-FSL5

of the first

lens

Second

−106.362

3.479

face of the

first lens

First face

24.858

4.673

1.49845

81.1

0.0280

S-FPL51

of the

second

lens

Second

−68.077

0.464

face of the

second

lens

First face

−63.358

1.056

1.72538

34.5

−0.0019

S-NBH8

of the

third lens

Second

35.626

10.788

face of the

third lens

First face

23.810

4.188

1.65222

33.5

0.0070

S-TIM22

of the

fourth lens

First face

−23.810

1.038

1.61669

44.0

−0.0065

S-NBM51

of the fifth

lens

Second

16.144

32.014

face of the

fifth lens

First face

166.151

0.727

1.59143

60.9

−0.0018

S-BAL35

of the

sixth lens

Second

16.615

face of the

sixth lens.

7. The optical system as recited in claim 6 , wherein the radii and distances are variable within a range of ±10%, the indices of refraction n e within a range of about ±0.05 and the Abbe numbers v e are variable within a range of about ±5.

8. An objective for imaging of an object on an image acquisition unit, comprising:

a first lens unit;

a second lens unit;

a third lens unit;

a fourth lens unit;

a fifth lens unit; and

a sixth lens unit, wherein all of the lens units are disposed from the object in a direction of the image acquisition unit,

wherein the first lens unit includes a converging lens,

wherein the second lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F >0.025,

wherein the third lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.0015,

wherein the fifth lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.005, and

wherein the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit, and the sixth lens unit have the following properties, the properties being standardized to the objective having a focal length of f=100 mm:

Distances

Face

Radii

[mm]

n e

ν e

Δθ g F

Glass

First face

38.827

2.768

1.48915

70.0

0.0022

S-FSL5

of the first

lens

Second

−119.283

3.159

face of the

first lens

First face

24.664

3.460

1.49845

81.1

0.0280

S-FPL51

of the

second

lens

Second

−68.056

0.443

face of the

second

lens

First face

−63.339

1.038

1.72538

34.5

−0.0019

S-NBH8

of the

third lens

Second

39.108

10.450

face of the

third lens

First face

23.803

2.768

1.65222

33.5

0.0070

S-TIM22

of the

fourth lens

First face

−23.803

1.038

1.61669

44.0

−0.0065

S-NBM51

of the fifth

lens

Second

15.236

34.497

face of the

fifth lens

First face

166.101

0.727

1.59143

60.9

−0.0018

S-BAL35

of the

sixth lens

Second

16.610

face of the

sixth lens.

9. The optical system as recited in claim 8 , wherein the radii and distances are variable within a range of ±10%, the indices of refraction n e within a range of about ±0.05 and the Abbe numbers v e are variable within a range of about ±5.

10. A telescope, comprising:

an optical system that images an object on an image acquisition unit, the optical system including:

a first lens unit;

a second lens unit;

a third lens unit;

a fourth lens unit;

a fifth lens unit; and

a sixth lens unit, wherein all of the lens units are disposed from the object in a direction of the image acquisition unit with no intervening lens units,

wherein the first lens unit includes a converging lens,

wherein the second lens unit includes a converging lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F >0.025,

wherein the third lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.0015, and

wherein the fourth lens unit includes a converging lens, and

wherein the fifth lens unit includes a dispersive lens and is manufactured from a material whose deviation of the relative partial dispersion fulfills the following condition:

Δθ g F <−0.005.

11. The telescope as recited in claim 10 , wherein the telescope is a telescopic sight.

12. The telescope as recited in claim 10 , wherein the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit, and the sixth lens unit each have precisely one lens.

13. The telescope as recited in claim 10 , wherein the sixth lens unit is displaceable along an optical axis of the objective.

14. The telescope as recited in claim 10 , wherein the sixth lens unit includes a dispersive lens.

15. The telescope as recited in claim 10 , wherein the fourth lens unit and the fifth lens unit form a dispersive element.