Optem Long-Working Distance Microscope Objectives

Optem Long Working Distance Objectives

Optem® Long Working Distance (LWD) Objectives are the perfect machine vision and industrial imaging solution for applications demanding higher magnification, resolving power and chromatic performance without compromising working space around your subject.

Optem M Plan APO Infinity-Corrected Objectives are available in 2X, 5X, 10X, 20X and 50X magnifications and provide flat-field imaging for both zoom and fixed magnification needs. These objectives are apochromatically corrected and designed for brightfield illumination. 

Optem LWD HR Objectives are avaialble in 5X, 10X and 20X and designed to maximize NA for high-resolution critical inspection applications.

Optem M PLAN APO Objectives 

Part No. 

Description 

Magnification 

Numerical Aperture 

Working Distance (mm) 

EFL (mm) 

Resolution (um) 

DOF (um) 

Max Obj. FOV (mm) 

Thread 

Mass (g) 

28-21-02-001 

2X M PLAN APO 

2X 

0.055 

34 

100 

6.1 

181.8 

⌀12.00 

M26 x 36T 

233 

28-21-05-001 

5X M PLAN APO 

5X 

0.14 

41 

40 

2.4 

28.1 

⌀4.80 

M26 x 36T 

220 

28-21-10-000 

10X M PLAN APO 

10X 

0.30 

34 

20 

1.1 

6.1 

⌀2.40 

M26 x 36T 

240 

28-21-11-001 

20X M PLAN APO 

20X 

0.42 

20 

10 

0.8 

3.1 

⌀1.20 

M26 x 36T 

284 

28-21-50-001 

50X M PLAN APO 

50X 

0.55 

13 

0.61 

1.8 

⌀0.48 

M26 x 36T 

299 

 

 

Optem High Resolution Objectives 

Part No. 

Description 

Magnification 

Numerical Aperture 

Working Distance (mm) 

EFL (mm) 

Resolution (um) 

DOF (um) 

Max Obj. FOV (mm)1 

Thread 

Mass (g) 

28-20-44-000 

5X HIGH-RES 

5X 

0.225 

34 

40 

1.50 

181.8 

⌀0.74 

M26 x 36T 

210 

28-20-45-000 

10X HIGH-RES 

10X 

0.45 

19 

20 

0.74 

28.1 

⌀0.20 

M26 x 36T 

190 

28-20-46-000 

20X HIGH-RES 

20X 

0.60 

13 

10 

0.56 

6.1 

⌀0.30 

M26 x 36T 

290 

1Optem high-resolution objectives are not flat-field corrected and field curvature impacts imaging performance off-axis. 

 

  • 2X, 5X, 10X, 20X and 50X Magnifications
  • Long working distances from 13 to 41 mm
  • Numerical Aperture from 0.055 to 0.6 
  • Infinity-corrected objective lenses
  • 95 mm parfocal distance
  • Apochromatically corrected
  • 400-700nm Operating Wavelength Range
  • Brightfield Illumination
  • 200mm Reference Focal Length

Optem M PLAN APO Objectives 

Part No. 

Description 

Magnification 

Numerical Aperture 

Working Distance (mm) 

EFL (mm) 

Resolution (um) 

DOF (um) 

Max Obj. FOV (mm) 

Thread 

Mass (g) 

28-21-02-001 

2X M PLAN APO 

2X 

0.055 

34 

100 

6.1 

181.8 

⌀12.00 

M26 x 36T 

233 

28-21-05-001 

5X M PLAN APO 

5X 

0.14 

41 

40 

2.4 

28.1 

⌀4.80 

M26 x 36T 

220 

28-21-10-000 

10X M PLAN APO 

10X 

0.30 

34 

20 

1.1 

6.1 

⌀2.40 

M26 x 36T 

240 

28-21-11-001 

20X M PLAN APO 

20X 

0.42 

20 

10 

0.8 

3.1 

⌀1.20 

M26 x 36T 

284 

28-21-50-001 

50X M PLAN APO 

50X 

0.55 

13 

0.61 

1.8 

⌀0.48 

M26 x 36T 

299 

 

 

Optem High Resolution Objectives 

Part No. 

Description 

Magnification 

Numerical Aperture 

Working Distance (mm) 

EFL (mm) 

Resolution (um) 

DOF (um) 

Max Obj. FOV (mm)1 

Thread 

Mass (g) 

28-20-44-000 

5X HIGH-RES 

5X 

0.225 

34 

40 

1.50 

181.8 

⌀0.74 

M26 x 36T 

210 

28-20-45-000 

10X HIGH-RES 

10X 

0.45 

19 

20 

0.74 

28.1 

⌀0.20 

M26 x 36T 

190 

28-20-46-000 

20X HIGH-RES 

20X 

0.60 

13 

10 

0.56 

6.1 

⌀0.30 

M26 x 36T 

290 

1Optem high-resolution objectives are not flat-field corrected and field curvature impacts imaging performance off-axis. 

 

  • 2X, 5X, 10X, 20X and 50X Magnifications
  • Long working distances from 13 to 41 mm
  • Numerical Aperture from 0.055 to 0.6 
  • Infinity-corrected objective lenses
  • 95 mm parfocal distance
  • Apochromatically corrected
  • 400-700nm Operating Wavelength Range
  • Brightfield Illumination
  • 200mm Reference Focal Length
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